{"id":28771,"date":"2026-10-28T07:36:21","date_gmt":"2026-10-28T07:36:21","guid":{"rendered":"https:\/\/www.wjwsy.com\/?p=28771"},"modified":"2026-11-02T09:55:10","modified_gmt":"2026-11-02T09:55:10","slug":"usb-pd-2-0-vs-pd-3-0-vs-pd-3-1-what-are-the-differences","status":"publish","type":"post","link":"https:\/\/www.wjwsy.com\/pt\/usb-pd-2-0-vs-pd-3-0-vs-pd-3-1-what-are-the-differences\/","title":{"rendered":"USB PD 2.0 vs PD 3.0 vs PD 3.1: Quais s\u00e3o as diferen\u00e7as?"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"28771\" class=\"elementor elementor-28771\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-65f234a e-flex e-con-boxed e-con e-parent\" data-id=\"65f234a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-15d5d4d elementor-widget elementor-widget-html\" data-id=\"15d5d4d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<!-- ============================================================\r\n     USB PD 2.0 vs PD 3.0 vs PD 3.1: What Are the Differences? \u2013 \u5b8c\u6574 HTML \u6392\u7248\r\n     \u4eff\u7167 DC \u8fde\u63a5\u5668 \/ USB-C Cable \u6392\u7248\u89c4\u8303\uff0c\u4fdd\u7559\u5168\u90e8\u539f\u6587\u5185\u5bb9\r\n     \u6ce8\uff1a\u4e3b\u6807\u9898\u4f7f\u7528 H2\uff1b\u5e95\u90e8\u7edf\u4e00\u6dfb\u52a0\u4ea7\u54c1\u5206\u7c7b\u4e0e Contact \u5185\u94fe\u6a21\u5757\r\n     ============================================================ -->\r\n\r\n<style>\r\n    \/* =====================================================================\r\n       USB PD Versions \u2013 Article Stylesheet (\u7edf\u4e00\u7248)\r\n       ===================================================================== *\/\r\n\r\n    \/* ---------- Design Tokens ---------- *\/\r\n    .dc-guide {\r\n        --dc-primary: #0b6e4f;\r\n        --dc-primary-dark: #064e3b;\r\n        --dc-accent: #10b981;\r\n        --dc-accent-soft: #d1fae5;\r\n        --dc-ink: #1f2937;\r\n        --dc-ink-soft: #4b5563;\r\n        --dc-muted: #6b7280;\r\n        --dc-line: #e5e7eb;\r\n        --dc-line-soft: #f1f5f9;\r\n        --dc-bg: #ffffff;\r\n        --dc-bg-soft: #f8fafc;\r\n        --dc-bg-callout: #f0fdf4;\r\n        --dc-shadow: 0 4px 16px rgba(11, 110, 79, 0.10);\r\n        --dc-shadow-hover: 0 10px 30px rgba(11, 110, 79, 0.22);\r\n        --dc-radius: 12px;\r\n        --dc-radius-lg: 18px;\r\n        --dc-maxw: 1130px;\r\n        --dc-font: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto,\r\n            \"Helvetica Neue\", \"PingFang SC\", \"Microsoft YaHei\", sans-serif;\r\n    }\r\n\r\n    \/* ---------- Article Container ---------- *\/\r\n    .dc-guide {\r\n        max-width: var(--dc-maxw);\r\n        margin: 0 auto;\r\n        padding: 32px 28px 80px;\r\n        font-family: var(--dc-font);\r\n        color: var(--dc-ink);\r\n        font-size: 17px;\r\n        line-height: 1.78;\r\n        background:\r\n            radial-gradient(circle at 0% 0%, rgba(16, 185, 129, 0.06), transparent 42%),\r\n            radial-gradient(circle at 100% 0%, rgba(11, 110, 79, 0.05), transparent 42%),\r\n            var(--dc-bg);\r\n        scroll-behavior: smooth;\r\n        border-left: 2px solid var(--dc-line-soft);\r\n        border-right: 2px solid var(--dc-line-soft);\r\n        box-shadow: 0 0 0 1px var(--dc-line-soft), 0 8px 24px rgba(0, 0, 0, 0.02);\r\n        position: relative;\r\n    }\r\n\r\n    .dc-guide::before,\r\n    .dc-guide::after {\r\n        content: '';\r\n        position: absolute;\r\n        top: 0;\r\n        bottom: 0;\r\n        width: 1px;\r\n        background: linear-gradient(180deg, transparent, var(--dc-accent-soft), transparent);\r\n        opacity: 0.3;\r\n        pointer-events: none;\r\n    }\r\n    .dc-guide::before {\r\n        left: -1px;\r\n    }\r\n    .dc-guide::after {\r\n        right: -1px;\r\n    }\r\n\r\n    \/* ---------- Article Title (H1 fallback) ---------- *\/\r\n    .dc-article-title {\r\n        font-size: clamp(28px, 4.4vw, 42px);\r\n        font-weight: 800;\r\n        line-height: 1.22;\r\n        letter-spacing: -0.02em;\r\n        color: var(--dc-primary-dark);\r\n        margin: 0 0 18px;\r\n        padding-bottom: 18px;\r\n        position: relative;\r\n        background: linear-gradient(110deg, var(--dc-primary-dark) 0%,\r\n                var(--dc-primary) 45%, var(--dc-accent) 100%);\r\n        -webkit-background-clip: text;\r\n        background-clip: text;\r\n        -webkit-text-fill-color: transparent;\r\n        animation: dc-fade-down 0.6s ease both;\r\n    }\r\n\r\n    .dc-article-title::after {\r\n        content: \"\";\r\n        position: absolute;\r\n        left: 0;\r\n        bottom: 0;\r\n        width: 64px;\r\n        height: 4px;\r\n        border-radius: 4px;\r\n        background: linear-gradient(90deg, var(--dc-primary), var(--dc-accent));\r\n    }\r\n\r\n    \/* ---------- Hero Header Card ---------- *\/\r\n    .dc-hero {\r\n        position: relative;\r\n        margin: 0 0 32px;\r\n        padding: 40px 48px;\r\n        border-radius: 18px;\r\n        background:\r\n            radial-gradient(1200px 520px at 100% -30%, rgba(16, 185, 129, 0.35), transparent 60%),\r\n            radial-gradient(1000px 520px at 0% 140%, rgba(6, 95, 70, 0.5), transparent 58%),\r\n            linear-gradient(135deg, #065f46 0%, #0b6e4f 50%, #10b981 100%);\r\n        color: #ffffff;\r\n        overflow: hidden;\r\n        animation: dc-fade-up 0.5s ease both;\r\n        --hero-text: #ffffff;\r\n    }\r\n\r\n    .dc-hero-badge {\r\n        display: inline-block;\r\n        padding: 8px 20px;\r\n        margin-bottom: 24px;\r\n        font-size: 12px;\r\n        font-weight: 700;\r\n        letter-spacing: 0.14em;\r\n        text-transform: uppercase;\r\n        color: rgba(255, 255, 255, 0.88) !important;\r\n        background: rgba(255, 255, 255, 0.06);\r\n        border: 1px solid rgba(255, 255, 255, 0.25);\r\n        border-radius: 999px;\r\n    }\r\n\r\n    \/* \u4e3b\u6807\u9898\uff1a\u6b64\u5904\u4f7f\u7528 H2 \u5143\u7d20\uff0c\u6837\u5f0f\u4fdd\u6301\u4e0e\u539f H1 \u4e00\u81f4 *\/\r\n    .dc-hero-title {\r\n        background: none !important;\r\n        -webkit-text-fill-color: var(--hero-text) !important;\r\n        background-clip: unset !important;\r\n        -webkit-background-clip: unset !important;\r\n        margin: 0 0 16px !important;\r\n        padding: 0 !important;\r\n        color: var(--hero-text) !important;\r\n        border: none !important;\r\n        font-size: clamp(30px, 4.2vw, 44px) !important;\r\n        font-weight: 800 !important;\r\n        line-height: 1.18;\r\n        letter-spacing: -0.015em;\r\n    }\r\n\r\n    .dc-hero-title::after {\r\n        display: none !important;\r\n    }\r\n\r\n    .dc-hero-lead {\r\n        font-size: 17px !important;\r\n        line-height: 1.72 !important;\r\n        color: rgba(255, 255, 255, 0.88) !important;\r\n        max-width: 100%;\r\n        margin: 0 0 26px !important;\r\n    }\r\n\r\n    .dc-hero-tags {\r\n        list-style: none;\r\n        margin: 0;\r\n        padding: 0;\r\n        display: flex;\r\n        flex-wrap: wrap;\r\n        gap: 10px;\r\n    }\r\n\r\n    .dc-hero-tags li {\r\n        padding: 9px 16px;\r\n        font-size: 14px;\r\n        font-weight: 500;\r\n        line-height: 1.3;\r\n        color: rgba(255, 255, 255, 0.82) !important;\r\n        background: rgba(255, 255, 255, 0.07);\r\n        border: 1px solid rgba(255, 255, 255, 0.18);\r\n        border-radius: 12px;\r\n        transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;\r\n        cursor: default;\r\n    }\r\n\r\n    .dc-hero-tags li:hover {\r\n        background: rgba(255, 255, 255, 0.13);\r\n        border-color: rgba(255, 255, 255, 0.3);\r\n        color: #ffffff !important;\r\n    }\r\n\r\n    \/* ---------- Transitional intro ---------- *\/\r\n    .dc-guide-intro {\r\n        margin: -4px 0 32px;\r\n        padding: 18px 24px;\r\n        font-size: 16.5px;\r\n        line-height: 1.72;\r\n        color: var(--dc-ink);\r\n        background:\r\n            linear-gradient(90deg, rgba(16, 185, 129, 0.08), rgba(16, 185, 129, 0.02) 70%, transparent);\r\n        border-left: 3px solid var(--dc-accent);\r\n        border-radius: 0 10px 10px 0;\r\n    }\r\n\r\n    .dc-guide-intro::first-line {\r\n        font-weight: 600;\r\n        color: var(--dc-primary-dark);\r\n    }\r\n\r\n    \/* ---------- Paragraphs ---------- *\/\r\n    .dc-paragraph {\r\n        margin: 0 0 20px;\r\n        color: var(--dc-ink);\r\n        transition: color 0.2s ease;\r\n    }\r\n\r\n    .dc-paragraph strong {\r\n        color: var(--dc-primary-dark);\r\n        font-weight: 700;\r\n    }\r\n\r\n    \/* ---------- Inline Links (\u8d34\u5408\u4e3b\u9898) ---------- *\/\r\n    .dc-paragraph a,\r\n    .dc-reading-list a {\r\n        color: var(--dc-primary);\r\n        font-weight: 600;\r\n        text-decoration: none;\r\n        border-bottom: 1px dashed transparent;\r\n        transition: color 0.2s ease, border-color 0.2s ease;\r\n    }\r\n\r\n    .dc-paragraph a:hover,\r\n    .dc-reading-list a:hover {\r\n        color: var(--dc-primary-dark);\r\n        border-bottom-color: var(--dc-accent);\r\n    }\r\n\r\n    \/* ---------- Section Titles (H2) ---------- *\/\r\n    .dc-section-title {\r\n        font-size: clamp(24px, 3.2vw, 30px);\r\n        font-weight: 800;\r\n        color: var(--dc-primary-dark);\r\n        margin: 56px 0 18px;\r\n        padding: 14px 0 14px 18px;\r\n        position: relative;\r\n        line-height: 1.3;\r\n        border-bottom: 1px solid var(--dc-line);\r\n        scroll-margin-top: 24px;\r\n    }\r\n\r\n    .dc-section-title::before {\r\n        content: \"\";\r\n        position: absolute;\r\n        left: 0;\r\n        top: 18px;\r\n        bottom: 18px;\r\n        width: 5px;\r\n        border-radius: 6px;\r\n        background: linear-gradient(180deg, var(--dc-primary), var(--dc-accent));\r\n        box-shadow: 0 0 0 0 rgba(11, 110, 79, 0.4);\r\n        transition: box-shadow 0.4s ease;\r\n    }\r\n\r\n    .dc-section-title:hover::before {\r\n        box-shadow: 0 0 0 4px rgba(11, 110, 79, 0.18);\r\n    }\r\n\r\n    .dc-section-title::after {\r\n        content: \"\";\r\n        display: block;\r\n        width: 0;\r\n        height: 3px;\r\n        margin-top: 12px;\r\n        border-radius: 3px;\r\n        background: linear-gradient(90deg, var(--dc-primary), var(--dc-accent));\r\n        transition: width 0.5s ease;\r\n    }\r\n\r\n    .dc-section-title:hover::after {\r\n        width: 100%;\r\n    }\r\n\r\n    \/* ---------- Subsection Titles (H3) ---------- *\/\r\n    .dc-subsection-title {\r\n        font-size: clamp(19px, 2.4vw, 22px);\r\n        font-weight: 700;\r\n        color: var(--dc-ink);\r\n        margin: 36px 0 12px;\r\n        padding-left: 14px;\r\n        position: relative;\r\n        line-height: 1.4;\r\n        scroll-margin-top: 24px;\r\n    }\r\n\r\n    .dc-subsection-title::before {\r\n        content: \"\";\r\n        position: absolute;\r\n        left: 0;\r\n        top: 6px;\r\n        bottom: 6px;\r\n        width: 4px;\r\n        border-radius: 4px;\r\n        background: linear-gradient(180deg, var(--dc-primary-dark), var(--dc-accent));\r\n        opacity: 0.85;\r\n        transition: width 0.25s ease, opacity 0.25s ease;\r\n    }\r\n\r\n    .dc-subsection-title:hover::before {\r\n        width: 6px;\r\n        opacity: 1;\r\n    }\r\n\r\n    .dc-subsection-title:hover {\r\n        color: var(--dc-primary-dark);\r\n    }\r\n\r\n    \/* ---------- Label ---------- *\/\r\n    .dc-label {\r\n        display: inline-flex;\r\n        align-items: center;\r\n        gap: 8px;\r\n        margin: 8px 0 12px;\r\n        padding: 6px 14px;\r\n        border-radius: 999px;\r\n        background: var(--dc-accent-soft);\r\n        color: var(--dc-primary-dark);\r\n        font-size: 14px;\r\n        font-weight: 600;\r\n        letter-spacing: 0.02em;\r\n        border: 1px solid rgba(16, 185, 129, 0.35);\r\n    }\r\n\r\n    .dc-label::before {\r\n        content: \"\\25B8\";\r\n        color: var(--dc-accent);\r\n        font-size: 14px;\r\n        line-height: 1;\r\n    }\r\n\r\n    \/* ---------- Lists ---------- *\/\r\n    .dc-reading-list {\r\n        list-style: none;\r\n        margin: 0 0 24px;\r\n        padding: 4px 0 4px 4px;\r\n    }\r\n\r\n    .dc-reading-list li {\r\n        position: relative;\r\n        padding: 8px 8px 8px 28px;\r\n        margin: 6px 0;\r\n        border-radius: 8px;\r\n        background: var(--dc-bg-soft);\r\n        border: 1px solid var(--dc-line);\r\n        transition: transform 0.2s ease, box-shadow 0.2s ease,\r\n            background 0.2s ease, border-color 0.2s ease;\r\n    }\r\n\r\n    .dc-reading-list li::before {\r\n        content: \"\";\r\n        position: absolute;\r\n        left: 11px;\r\n        top: 50%;\r\n        transform: translateY(-50%);\r\n        width: 8px;\r\n        height: 8px;\r\n        border-radius: 50%;\r\n        background: var(--dc-accent);\r\n        box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.18);\r\n        transition: background 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;\r\n    }\r\n\r\n    .dc-reading-list li:hover::before {\r\n        background: var(--dc-primary);\r\n        box-shadow: 0 0 0 4px rgba(11, 110, 79, 0.22);\r\n        transform: translateY(-50%) scale(1.15);\r\n    }\r\n\r\n    .dc-reading-list li:has(strong) {\r\n        border-left: 3px solid rgba(11, 110, 79, 0.35);\r\n    }\r\n\r\n    .dc-reading-list li:has(strong):hover {\r\n        border-left-color: var(--dc-primary);\r\n    }\r\n\r\n    \/* ---------- Spec Badges ---------- *\/\r\n    .dc-spec {\r\n        display: inline-block;\r\n        padding: 1px 8px;\r\n        margin: 0 1px;\r\n        border-radius: 6px;\r\n        font-weight: 700;\r\n        font-size: 0.94em;\r\n        line-height: 1.5;\r\n        color: var(--dc-primary-dark);\r\n        background: linear-gradient(135deg,\r\n                rgba(16, 185, 129, 0.14), rgba(11, 110, 79, 0.14));\r\n        border: 1px solid rgba(16, 185, 129, 0.35);\r\n        box-shadow: 0 1px 0 rgba(255, 255, 255, 0.6) inset;\r\n        transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;\r\n    }\r\n\r\n    .dc-spec:hover {\r\n        transform: translateY(-1px);\r\n        background: linear-gradient(135deg, var(--dc-accent), var(--dc-primary));\r\n        color: #fff;\r\n        border-color: transparent;\r\n        box-shadow: 0 4px 12px rgba(11, 110, 79, 0.25);\r\n    }\r\n\r\n    \/* ---------- Table ---------- *\/\r\n    .dc-table-wrap {\r\n        margin: 16px 0 24px;\r\n        overflow-x: auto;\r\n        border-radius: var(--dc-radius);\r\n        border: 1px solid var(--dc-line);\r\n        box-shadow: var(--dc-shadow);\r\n        background: #fff;\r\n    }\r\n\r\n    .dc-table-wrap table {\r\n        width: 100%;\r\n        border-collapse: collapse;\r\n        font-size: 15px;\r\n        line-height: 1.6;\r\n        min-width: 480px;\r\n    }\r\n\r\n    .dc-table-wrap thead th {\r\n        background: linear-gradient(135deg, var(--dc-primary-dark), var(--dc-primary));\r\n        color: #fff;\r\n        font-weight: 700;\r\n        padding: 14px 16px;\r\n        text-align: left;\r\n        letter-spacing: 0.02em;\r\n        font-size: 14px;\r\n    }\r\n\r\n    .dc-table-wrap tbody td {\r\n        padding: 12px 16px;\r\n        border-bottom: 1px solid var(--dc-line-soft);\r\n        color: var(--dc-ink);\r\n        vertical-align: top;\r\n    }\r\n\r\n    .dc-table-wrap tbody tr:last-child td {\r\n        border-bottom: none;\r\n    }\r\n\r\n    .dc-table-wrap tbody tr:hover {\r\n        background: rgba(16, 185, 129, 0.04);\r\n    }\r\n\r\n    .dc-table-wrap tfoot td {\r\n        padding: 12px 16px;\r\n        font-size: 14px;\r\n        color: var(--dc-muted);\r\n        background: var(--dc-bg-soft);\r\n        border-top: 1px solid var(--dc-line);\r\n        font-style: italic;\r\n        line-height: 1.6;\r\n    }\r\n\r\n    .dc-table-wrap tfoot td:first-child {\r\n        border-radius: 0 0 0 8px;\r\n    }\r\n    .dc-table-wrap tfoot td:last-child {\r\n        border-radius: 0 0 8px 0;\r\n    }\r\n\r\n    \/* ---------- Note Block ---------- *\/\r\n    .dc-note {\r\n        margin: 20px 0 24px;\r\n        padding: 16px 20px;\r\n        border-left: 4px solid var(--dc-accent);\r\n        background: var(--dc-bg-callout);\r\n        border-radius: 0 8px 8px 0;\r\n        font-size: 15.5px;\r\n        line-height: 1.7;\r\n        color: var(--dc-ink);\r\n    }\r\n\r\n    .dc-note strong {\r\n        color: var(--dc-primary-dark);\r\n    }\r\n\r\n    \/* ---------- Table of Contents ---------- *\/\r\n    .dc-article-toc {\r\n        margin: 28px 0 36px;\r\n        padding: 20px 24px 18px;\r\n        border-radius: var(--dc-radius);\r\n        background:\r\n            linear-gradient(135deg, rgba(11, 110, 79, 0.05), rgba(16, 185, 129, 0.05)),\r\n            var(--dc-bg-soft);\r\n        border: 1px solid var(--dc-line);\r\n        box-shadow: var(--dc-shadow);\r\n        position: relative;\r\n        overflow: hidden;\r\n        animation: dc-fade-up 0.6s ease 0.1s both;\r\n    }\r\n\r\n    .dc-article-toc::before {\r\n        content: \"\";\r\n        position: absolute;\r\n        left: 0;\r\n        top: 0;\r\n        bottom: 0;\r\n        width: 4px;\r\n        background: linear-gradient(180deg, var(--dc-primary), var(--dc-accent));\r\n    }\r\n\r\n    .dc-toc-heading {\r\n        font-size: 12px;\r\n        font-weight: 700;\r\n        letter-spacing: 0.16em;\r\n        text-transform: uppercase;\r\n        color: var(--dc-primary-dark);\r\n        margin: 0 0 14px;\r\n        display: flex;\r\n        align-items: center;\r\n        gap: 8px;\r\n    }\r\n\r\n    .dc-toc-heading::before {\r\n        content: \"\\2630\";\r\n        font-size: 13px;\r\n        color: var(--dc-accent);\r\n    }\r\n\r\n    .dc-toc-list,\r\n    .dc-toc-list ol {\r\n        list-style: none;\r\n        margin: 0;\r\n        padding: 0;\r\n        counter-reset: dc-toc;\r\n    }\r\n\r\n    .dc-toc-list>li {\r\n        counter-increment: dc-toc;\r\n        margin: 8px 0 6px;\r\n        padding-left: 30px;\r\n        position: relative;\r\n        font-weight: 600;\r\n        color: var(--dc-ink);\r\n        font-size: 15.5px;\r\n        line-height: 1.6;\r\n    }\r\n\r\n    .dc-toc-list>li::before {\r\n        content: counter(dc-toc);\r\n        position: absolute;\r\n        left: 0;\r\n        top: 2px;\r\n        width: 20px;\r\n        height: 20px;\r\n        border-radius: 5px;\r\n        background: linear-gradient(135deg, var(--dc-primary), var(--dc-accent));\r\n        color: #fff;\r\n        font-size: 11px;\r\n        font-weight: 700;\r\n        display: flex;\r\n        align-items: center;\r\n        justify-content: center;\r\n        line-height: 1;\r\n    }\r\n\r\n    .dc-toc-list ol {\r\n        margin: 4px 0 2px 30px;\r\n        display: flex;\r\n        flex-wrap: wrap;\r\n        align-items: baseline;\r\n        gap: 4px 14px;\r\n    }\r\n\r\n    .dc-toc-list ol li {\r\n        padding: 2px 0;\r\n        position: relative;\r\n        font-weight: 400;\r\n        color: var(--dc-ink-soft);\r\n        font-size: 14px;\r\n        line-height: 1.7;\r\n    }\r\n\r\n    .dc-toc-list ol li::before {\r\n        content: \"\\00B7\";\r\n        margin-right: 6px;\r\n        color: var(--dc-accent);\r\n        font-weight: 700;\r\n    }\r\n\r\n    .dc-toc-list a {\r\n        color: inherit;\r\n        text-decoration: none;\r\n       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   }\r\n        .dc-related-cta a {\r\n            font-size: 15px;\r\n        }\r\n    }\r\n\r\n    \/* \u5f3a\u5236\u6e05\u9664\u5217\u8868\u539f\u751f\u6807\u8bb0 *\/\r\n    .dc-guide ul,\r\n    .dc-guide ol,\r\n    .dc-guide .dc-toc-list,\r\n    .dc-guide .dc-reading-list,\r\n    .dc-guide .dc-toc-list ol,\r\n    .dc-guide .dc-reading-list ul {\r\n        list-style: none !important;\r\n        padding-left: 0 !important;\r\n        margin-left: 0 !important;\r\n    }\r\n    .dc-guide li {\r\n        list-style: none !important;\r\n    }\r\n\r\n    \/* \u5217\u8868\u9879\u60ac\u505c\u6548\u679c\uff1a\u5411\u53f3\u79fb\u52a8\u5e76\u9ad8\u4eae *\/\r\n    .dc-reading-list li:hover {\r\n        transform: translateX(6px);\r\n        background: var(--dc-accent-soft);\r\n        border-color: var(--dc-accent);\r\n        box-shadow: 0 4px 12px rgba(11, 110, 79, 0.15);\r\n    }\r\n    \r\n    #Content {\r\n        padding-top: 0;\r\n    }\r\n<\/style>\r\n\r\n<!-- ============================================================\r\n     \u6587\u7ae0\u5185\u5bb9 \u2014 \u6240\u6709\u6807\u9898\u542b\u951a\u70b9\uff0c\u76ee\u5f55\u5e73\u6ed1\u6eda\u52a8\uff08\u7531 JS \u9a71\u52a8\uff09\r\n     ============================================================ -->\r\n<div class=\"dc-guide\">\r\n\r\n    <!-- ===== HERO ===== -->\r\n    <div class=\"dc-hero\">\r\n        <div class=\"dc-hero-badge\">TECHNICAL COMPARISON &nbsp;\u00b7&nbsp; USB POWER DELIVERY<\/div>\r\n        <!-- \u4e3b\u6807\u9898\uff1a\u4f7f\u7528 H2 -->\r\n        <h2 class=\"dc-hero-title\">USB PD 2.0 vs PD 3.0 vs PD 3.1: Quais s\u00e3o as diferen\u00e7as?<\/h2>\r\n        <p class=\"dc-hero-lead\">\r\n            USB Power Delivery (PD) has become the universal fast-charging language behind nearly every USB-C device on the market. With each revision, the standard has pushed the wattage ceiling higher, the voltage ranges wider, and the negotiation between charger and device smarter. If you have ever compared a charger spec sheet and seen \"PD 3.0\", \"PD 3.1\" or \"PPS\" and wondered what actually changes, this guide breaks it down.\r\n        <\/p>\r\n        <ul class=\"dc-hero-tags\">\r\n            <li>USB PD 2.0<\/li>\r\n            <li>USB PD 3.0<\/li>\r\n            <li>USB PD 3.1<\/li>\r\n            <li>PPS<\/li>\r\n            <li>EPR<\/li>\r\n            <li>240W<\/li>\r\n            <li>OEM\/ODM<\/li>\r\n        <\/ul>\r\n    <\/div>\r\n\r\n    <!-- ===== TABLE OF CONTENTS\uff08\u542b\u951a\u70b9\u94fe\u63a5\uff09 ===== -->\r\n    <div class=\"dc-article-toc\">\r\n        <div class=\"dc-toc-heading\">\u00cdndice<\/div>\r\n        <ul class=\"dc-toc-list\">\r\n            <li>\r\n                <a href=\"#section-1\">1. What Is USB Power Delivery (PD)?<\/a>\r\n            <\/li>\r\n            <li>\r\n                <a href=\"#section-2\">2. USB PD 2.0: The First 100 W Standard (2014)<\/a>\r\n            <\/li>\r\n            <li>\r\n                <a href=\"#section-3\">3. USB PD 3.0: Finer Control, PPS, Smarter Negotiation (2015)<\/a>\r\n            <\/li>\r\n            <li>\r\n                <a href=\"#section-4\">4. USB PD 3.1: Breaking Past 100 W to 240 W (2021)<\/a>\r\n            <\/li>\r\n            <li>\r\n                <a href=\"#section-5\">5. Side-by-Side Comparison<\/a>\r\n            <\/li>\r\n            <li>\r\n                <a href=\"#section-6\">6. Which One Do You Actually Need?<\/a>\r\n            <\/li>\r\n            <li>\r\n                <a href=\"#section-7\">7. A Quick Note on Cables<\/a>\r\n            <\/li>\r\n            <li>\r\n                <a href=\"#section-8\">8. Summary<\/a>\r\n            <\/li>\r\n        <\/ul>\r\n    <\/div>\r\n\r\n    <!-- ============================================================\r\n         1. What Is USB Power Delivery (PD)?\r\n         ============================================================ -->\r\n    <h2 class=\"dc-section-title\" id=\"section-1\">1. What Is USB Power Delivery (PD)?<\/h2>\r\n\r\n    <p class=\"dc-paragraph\">\r\n        USB PD is a charging protocol that runs over a USB-C cable and connector. Instead of a fixed 5 V output like older USB ports, PD lets the charger and the device talk to each other over the CC (Configuration Channel) pin and agree on a voltage \u2014 5 V, 9 V, 15 V, 20 V, and on PD 3.1 also 28 V, 36 V and 48 V \u2014 and a current level up to 5 A.\r\n    <\/p>\r\n    <p class=\"dc-paragraph\">\r\n        The plug and cable are the physical side; PD is the negotiation language running inside them. Every USB-C cable carries at least one CC wire, but a USB-C cable <strong>without an E-Marker chip<\/strong> is limited to 3 A \u2014 about 60 W at 20 V. A cable that carries an E-Marker chip advertises its rated current (up to 5 A, 100 W), and EPR-rated cables also advertise 48 V capability. That is what unlocks fast charging for phones, tablets, laptops and even larger devices.\r\n    <\/p>\r\n\r\n    <!-- ===== \u56fe\u7247\u63d2\u5165\uff1aPD 3.1 vs PD 3.0 vs PD 2.0\uff08\u653e\u5728\u7b2c 2 \u8282\u4e0a\u65b9\uff09 ===== -->\r\n    <img decoding=\"async\" src=\"https:\/\/www.wjwsy.com\/wp-content\/uploads\/2026\/10\/PD-3.1-vs-PD-3.0-vs-PD-2.0.webp\" alt=\"PD 3.1 vs PD 3.0 vs PD 2.0 comparison\" style=\"max-width:100%; height:auto; border-radius:8px; display:block; margin-left:auto; margin-right:auto; margin-bottom:24px;\" onerror=\"this.style.display='none'\">\r\n\r\n    <!-- ============================================================\r\n         2. USB PD 2.0: The First 100 W Standard (2014)\r\n         ============================================================ -->\r\n    <h2 class=\"dc-section-title\" id=\"section-2\">2. USB PD 2.0: The First 100 W Standard (2014)<\/h2>\r\n\r\n    <p class=\"dc-paragraph\">\r\n        Released in 2014, <strong>USB PD 2.0<\/strong> was the version that turned USB-C into a real charging platform. It raised the ceiling from the old USB Battery Charging 1.2 limit of 7.5 W to <strong>100 W<\/strong> (20 V at up to 5 A), which was enough to start charging thin laptops as well as phones.\r\n    <\/p>\r\n    <p class=\"dc-paragraph\">PD 2.0 defined a fixed set of Power Delivery Objects (PDOs):<\/p>\r\n    <ul class=\"dc-reading-list\">\r\n        <li>5 V \/ 3 A<\/li>\r\n        <li>9 V \/ 3 A<\/li>\r\n        <li>15 V \/ 3 A<\/li>\r\n        <li>20 V \/ 3 A<\/li>\r\n        <li>20 V \/ 5 A (requires an E-Marker cable)<\/li>\r\n    <\/ul>\r\n    <p class=\"dc-paragraph\">\r\n        Within those fixed steps, a phone could ask for 9 V, a laptop could ask for 20 V, and the charger would deliver whichever PDO both sides supported. PD 2.0 is still the baseline that every later version is backward-compatible with.\r\n    <\/p>\r\n\r\n    <!-- ============================================================\r\n         3. USB PD 3.0: Finer Control, PPS, Smarter Negotiation (2015)\r\n         ============================================================ -->\r\n    <h2 class=\"dc-section-title\" id=\"section-3\">3. USB PD 3.0: Finer Control, PPS, Smarter Negotiation (2015)<\/h2>\r\n\r\n    <p class=\"dc-paragraph\">\r\n        <strong>USB PD 3.0<\/strong> arrived in 2015 and kept the same voltage and wattage ceiling as PD 2.0 \u2014 still 100 W. The big changes were under the hood:\r\n    <\/p>\r\n    <ul class=\"dc-reading-list\">\r\n        <li><strong>More robust power negotiation.<\/strong> The message protocol was improved so chargers and devices agree on a power contract more reliably, especially when multiple devices are plugged into one charger.<\/li>\r\n        <li><strong>Better cable identification.<\/strong> PD 3.0 tightened how the CC pin reads an E-Marker chip, so a 60 W cable and a 100 W cable are no longer confused.<\/li>\r\n        <li><strong>PPS (Programmable Power Supply).<\/strong> Introduced in 2017 as an update to the PD 3.0 specification, PPS lets the device request a continuously adjustable voltage \u2014 from 3.3 V up to 21 V, in 20 mV steps \u2014 rather than snapping to a fixed 5\/9\/15\/20 V step. This is what lets modern phones charge at higher peak speeds and stay cooler during the charge cycle, because the charger follows the battery curve instead of forcing fixed steps.<\/li>\r\n    <\/ul>\r\n    <p class=\"dc-paragraph\">\r\n        PPS is not a separate version of PD. It is a feature of PD 3.0, and it is the reason most modern fast-charging phones from Samsung, Google and Xiaomi list \"PPS\" on the spec sheet.\r\n    <\/p>\r\n\r\n    <!-- ============================================================\r\n         4. USB PD 3.1: Breaking Past 100 W to 240 W (2021)\r\n         ============================================================ -->\r\n    <h2 class=\"dc-section-title\" id=\"section-4\">4. USB PD 3.1: Breaking Past 100 W to 240 W (2021)<\/h2>\r\n\r\n    <p class=\"dc-paragraph\">\r\n        <strong>USB PD 3.1<\/strong>, released in 2021, kept all of PD 3.0 (including PPS) and added a new high-wattage range called <strong>Extended Power Range (EPR)<\/strong>:\r\n    <\/p>\r\n    <ul class=\"dc-reading-list\">\r\n        <li>28 V \/ 5 A = 140 W<\/li>\r\n        <li>36 V \/ 5 A = 180 W<\/li>\r\n        <li>48 V \/ 5 A = <strong>240 W<\/strong><\/li>\r\n    <\/ul>\r\n    <p class=\"dc-paragraph\">\r\n        PD 3.1 also added <strong>AVS (Adjustable Voltage Supply)<\/strong> options \u2014 15\u201328 V, 15\u201336 V and 15\u201348 V at up to 5 A \u2014 so a charger can tune the voltage more precisely for laptops, monitors and small appliances.\r\n    <\/p>\r\n    <p class=\"dc-paragraph\">Two practical notes:<\/p>\r\n    <ul class=\"dc-reading-list\">\r\n        <li><strong>Most PD 3.1 chargers are still 100 W-class.<\/strong> The Fixed Power Range (FR) \u2014 5 V to 20 V \u2014 is unchanged from PD 3.0. Only chargers explicitly marketed as \"EPR\" or \"240 W\" can deliver the new voltages.<\/li>\r\n        <li><strong>You need an EPR-rated cable.<\/strong> A normal 5 A \/ 100 W USB-C cable will not safely carry 48 V. EPR cables are required to carry an E-Marker chip that advertises EPR support and a higher voltage rating.<\/li>\r\n    <\/ul>\r\n\r\n    <!-- ============================================================\r\n         5. Side-by-Side Comparison\r\n         ============================================================ -->\r\n    <h2 class=\"dc-section-title\" id=\"section-5\">5. Side-by-Side Comparison<\/h2>\r\n\r\n    <div class=\"dc-table-wrap\">\r\n        <table>\r\n            <thead>\r\n                <tr>\r\n                    <th>Recurso<\/th>\r\n                    <th>PD 2.0<\/th>\r\n                    <th>PD 3.0<\/th>\r\n                    <th>PD 3.1<\/th>\r\n                <\/tr>\r\n            <\/thead>\r\n            <tbody>\r\n                <tr>\r\n                    <td><span class=\"dc-spec\">Released<\/span><\/td>\r\n                    <td>2014<\/td>\r\n                    <td>2015 (PPS added 2017)<\/td>\r\n                    <td>2021<\/td>\r\n                <\/tr>\r\n                <tr>\r\n                    <td><span class=\"dc-spec\">Conector<\/span><\/td>\r\n                    <td>USB-C<\/td>\r\n                    <td>USB-C<\/td>\r\n                    <td>USB-C<\/td>\r\n                <\/tr>\r\n                <tr>\r\n                    <td><span class=\"dc-spec\">Voltage range<\/span><\/td>\r\n                    <td>5, 9, 15, 20 V<\/td>\r\n                    <td>5, 9, 15, 20 V<\/td>\r\n                    <td>5\u201320 V (FR) + 28, 36, 48 V (EPR)<\/td>\r\n                <\/tr>\r\n                <tr>\r\n                    <td><span class=\"dc-spec\">Max current<\/span><\/td>\r\n                    <td>5 A<\/td>\r\n                    <td>5 A<\/td>\r\n                    <td>5 A<\/td>\r\n                <\/tr>\r\n                <tr>\r\n                    <td><span class=\"dc-spec\">Max power<\/span><\/td>\r\n                    <td>100 W<\/td>\r\n                    <td>100 W<\/td>\r\n                    <td>240 W (EPR)<\/td>\r\n                <\/tr>\r\n                <tr>\r\n                    <td><span class=\"dc-spec\">PPS (adjustable voltage)<\/span><\/td>\r\n                    <td>N\u00e3o<\/td>\r\n                    <td>Sim<\/td>\r\n                    <td>Sim<\/td>\r\n                <\/tr>\r\n                <tr>\r\n                    <td><span class=\"dc-spec\">E-Marker cable required above 3 A<\/span><\/td>\r\n                    <td>Sim<\/td>\r\n                    <td>Sim<\/td>\r\n                    <td>Yes (plus EPR rating for &gt;100 W)<\/td>\r\n                <\/tr>\r\n                <tr>\r\n                    <td><span class=\"dc-spec\">Typical use today<\/span><\/td>\r\n                    <td>Baseline compatibility<\/td>\r\n                    <td>Phones, thin laptops<\/td>\r\n                    <td>Phones, thin laptops, gaming laptops, 240 W accessories<\/td>\r\n                <\/tr>\r\n            <\/tbody>\r\n        <\/table>\r\n    <\/div>\r\n\r\n    <!-- ============================================================\r\n         6. Which One Do You Actually Need?\r\n         ============================================================ -->\r\n    <h2 class=\"dc-section-title\" id=\"section-6\">6. Which One Do You Actually Need?<\/h2>\r\n\r\n    <ul class=\"dc-reading-list\">\r\n        <li><strong>For a smartphone or tablet:<\/strong> PD 3.0 with PPS is the sweet spot. Anything between 18 W and 65 W will charge quickly, and PPS keeps the phone cooler than fixed-step charging.<\/li>\r\n        <li><strong>For a thin-and-light laptop:<\/strong> PD 3.0 at 60 W\u2013100 W is enough. Most ultrabooks ship with a 65 W or 90 W PD 3.0 charger.<\/li>\r\n        <li><strong>For a gaming laptop, a 16-inch workstation, or a 240 W monitor:<\/strong> You need PD 3.1 EPR. Make sure both the charger and the cable are explicitly rated for EPR \u2014 a normal 100 W cable will not unlock 240 W, even if it physically fits.<\/li>\r\n        <li><strong>For future-proofing:<\/strong> PD 3.1 chargers are backward-compatible, so buying a PD 3.1 charger today means you can use it with older PD 2.0 \/ 3.0 devices and still have headroom for future high-wattage gear.<\/li>\r\n    <\/ul>\r\n\r\n    <!-- ============================================================\r\n         7. A Quick Note on Cables\r\n         ============================================================ -->\r\n    <h2 class=\"dc-section-title\" id=\"section-7\">7. A Quick Note on Cables<\/h2>\r\n\r\n    <p class=\"dc-paragraph\">\r\n        The cable is half of the equation. A 240 W charger plugged into a cheap 3 A USB-C cable will negotiate down to 60 W or 100 W, and a 100 W charger plugged into an EPR-rated cable will simply use the Fixed Range it supports. When buying a PD charger, check two things on the cable:\r\n    <\/p>\r\n    <ul class=\"dc-reading-list\">\r\n        <li><strong>E-Marker chip<\/strong> \u2014 required for anything above 60 W (3 A).<\/li>\r\n        <li><strong>EPR rating<\/strong> \u2014 required only if you actually intend to pull more than 100 W.<\/li>\r\n    <\/ul>\r\n\r\n    <!-- ============================================================\r\n         8. Summary\r\n         ============================================================ -->\r\n    <h2 class=\"dc-section-title\" id=\"section-8\">8. Summary<\/h2>\r\n\r\n    <p class=\"dc-paragraph\">\r\n        PD 2.0 gave us 100 W over USB-C. PD 3.0 kept 100 W but added PPS, which is why modern phones charge so smoothly. PD 3.1 kept all of that and added the EPR range that pushes the ceiling to 240 W for power-hungry laptops and accessories. For most people buying a charger today, a <strong>PD 3.0 \/ PPS<\/strong> charger between 20 W and 100 W is the practical choice; PD 3.1 EPR only matters if you are feeding a gaming laptop or a &gt;100 W device.\r\n    <\/p>\r\n\r\n    <!-- ===== \u5e95\u90e8\u7edf\u4e00\u5185\u94fe\u6a21\u5757 ===== -->\r\n    <div class=\"dc-related-cta\">\r\n\r\n        <div class=\"dc-cta-block\">\r\n            <h2>Explore Related Products<\/h2>\r\n            <p>Explore WJW's USB charging solutions and high-power USB-C cables for different charging requirements.<\/p>\r\n            <ul>\r\n                <li><a href=\"https:\/\/www.wjwsy.com\/usb-chargers\/\" target=\"_blank\" rel=\"noopener\">Explore os carregadores USB<\/a><\/li>\r\n                <li><a href=\"https:\/\/www.wjwsy.com\/product\/140w-soft-silicone-usb-c-to-usb-c-charging-cable-factory-direct\/\" target=\"_blank\" rel=\"noopener\">Explore 140W USB-C to USB-C Charging Cable<\/a><\/li>\r\n            <\/ul>\r\n        <\/div>\r\n\r\n        <div class=\"dc-cta-block\">\r\n            <h2>Have a USB Charging Project?<\/h2>\r\n            <p>Contact our team to discuss your product specifications, charging requirements, and OEM\/ODM projects.<\/p>\r\n            <ul>\r\n                <li><a href=\"https:\/\/www.wjwsy.com\/contact-us\/\" target=\"_blank\" rel=\"noopener\">Contact WJW<\/a><\/li>\r\n            <\/ul>\r\n        <\/div>\r\n\r\n    <\/div>\r\n\r\n<\/div>\r\n<!-- end .dc-guide -->\r\n\r\n<!-- ============================================================\r\n     \u5e73\u6ed1\u6eda\u52a8 JavaScript\uff08\u4e3a\u6240\u6709\u76ee\u5f55\u951a\u70b9\u94fe\u63a5\u6dfb\u52a0\u5e73\u6ed1\u884c\u4e3a\uff09\r\n     ============================================================ -->\r\n<script>\r\n    (function() {\r\n        if (document.readyState === 'loading') {\r\n            document.addEventListener('DOMContentLoaded', initSmoothScroll);\r\n        } else {\r\n            initSmoothScroll();\r\n        }\r\n\r\n        function initSmoothScroll() {\r\n            var tocLinks = document.querySelectorAll('.dc-toc-list a');\r\n            tocLinks.forEach(function(link) {\r\n                link.addEventListener('click', function(e) {\r\n                    var href = this.getAttribute('href');\r\n                    if (href && href.startsWith('#')) {\r\n                        var targetId = href.substring(1);\r\n                        var targetElement = document.getElementById(targetId);\r\n                        if (targetElement) {\r\n                            e.preventDefault();\r\n                            targetElement.scrollIntoView({\r\n                                behavior: 'smooth',\r\n                                block: 'start'\r\n                            });\r\n                        }\r\n                    }\r\n                });\r\n            });\r\n        }\r\n    })();\r\n<\/script>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>TECHNICAL COMPARISON &nbsp;\u00b7&nbsp; USB POWER DELIVERY USB PD 2.0 vs PD 3.0 vs PD 3.1: What Are the Differences? USB Power Delivery (PD) has become the<span class=\"excerpt-hellip\"> [\u2026]<\/span><\/p>\n","protected":false},"author":13,"featured_media":28779,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1271],"tags":[],"class_list":["post-28771","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-usb-charger"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v23.7 (Yoast SEO v28.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>USB PD 2.0 vs 3.0 vs 3.1: Differences &amp; Power | WJW<\/title>\n<meta name=\"description\" content=\"Compare USB PD 2.0 vs PD 3.0 vs PD 3.1 power limits, PPS, and EPR. 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