USB-C PD 3.1 Charger OEM: 240W Factory Sourcing Guide
QUICK ANSWER
How to source PD 3.1 chargers from OEM factories: USB PD 3.1 doubles max power from 100W to 240W via EPR (28V/36V/48V), enabling a single USB-C cable to charge everything from earbuds to gaming laptops. EU mandate requires USB-C for all notebooks from April 2026 — making PD 3.1 mandatory for laptop chargers. For B2B buyers: PD 3.1 GaN chargers from WOWOHCOOL start at MOQ 500, FOB Shenzhen $8-22/unit depending on wattage. EPR e-marker cables required above 100W. PD 3.1 is backward compatible — your existing PD 3.0 devices work fine with PD 3.1 chargers, but to access above 100W you need both an EPR-rated charger and an EPR-rated cable.
Table of Contents
1. PD 3.0 vs 3.1 vs 3.2: What OEM Buyers Must Verify Before Specifying Charger ICs
| Feature | PD 3.0 | PD 3.1 | PD 3.2 |
|---|---|---|---|
| Max Power | 100W | 240W | 240W (same) |
| Voltage Levels | 5V, 9V, 15V, 20V | +28V, 36V, 48V | Same as 3.1 |
| Power Ranges | SPR only | SPR + EPR | Same |
| Adjustable Voltage | PPS (3.3-21V, 20mV steps) | PPS + AVS (15-48V) | AVS refined |
| What It Means | Phones, tablets, ultrabooks | + Gaming laptops, workstations, monitors | Polished version of 3.1 |
PD 3.2 note: PD 3.2 does NOT increase power beyond 240W. It's a protocol refinement that standardizes AVS behavior, improves charger-device negotiation, and fixes edge cases discovered in early PD 3.1 implementations. Think of it as PD 3.1 "polished and production-hardened."
2. SPR vs EPR: Selecting Power Range Architecture for Your OEM Charger Product Line
PD 3.1's key innovation is splitting power delivery into two distinct ranges:
SPR — Standard Power Range
Up to 100W (20V × 5A)
Uses the familiar 5V/9V/15V/20V levels from PD 3.0. Fully backward compatible — every PD 3.1 charger supports SPR. Covers phones, tablets, and most ultrabooks.
✅ Standard USB-C cables work (up to 60W)
✅ 5A e-marked cables for 65-100W
EPR — Extended Power Range
100W to 240W (28V/36V/48V × 5A)
The new territory unlocked by PD 3.1. Enables laptop charging at full speed, portable monitor power, and emerging use cases like e-bike and power tool charging over USB-C.
⚠️ Requires EPR-rated charger
⚠️ Requires EPR-rated cable with EPR e-marker
The practical takeaway: SPR handles everything most people need today. EPR is for laptops above 100W and future devices. If your most power-hungry device is a MacBook Air (30-45W) or iPad Pro (20-30W), you may never use EPR — and that's fine. PD 3.1 chargers work perfectly at SPR levels with standard cables.
3. PD 3.1 Voltage Selection: 28V/36V/48V — Which EPR Tier Serves Your Target Market?
| Voltage | Max Power (at 5A) | Typical Devices | Range |
|---|---|---|---|
| 5V | 25W | Earbuds, smartwatch, basic phone charging | SPR |
| 9V | 45W | Standard fast charging for smartphones | SPR |
| 15V | 75W | Tablets, small ultrabooks, rapid smartphone charging | SPR |
| 20V | 100W | Most ultrabooks (MacBook Air, Dell XPS 13), tablets | SPR |
| 28V ★ | 140W | MacBook Pro 16", gaming laptops, portable monitors | EPR |
| 36V | 180W | High-performance workstations, docking stations | EPR |
| 48V | 240W | Desktop replacements, e-bikes, power tools, future devices | EPR |
4. E-Marker Cable Sourcing: OEM Specifications, FOB Cost & USB-IF Certification Tiers
Your cable matters as much as your charger. Here's what you need at each power level:
| Cable Type | Max Current | Max Power | E-Marker Chip? | Use Case |
|---|---|---|---|---|
| Basic USB-C charge cable | 1.5A or 3A | 60W (20V/3A) | No | Phone charging up to 60W |
| 100W rated (5A) | 5A | 100W (20V/5A) | Yes (standard) | Most laptops up to 100W |
| EPR rated (240W) | 5A | 240W (48V/5A) | Yes (EPR) | Gaming laptops, workstations 100W+ |
The Bottleneck Rule
Your charging speed is limited by the weakest link in the chain: charger → cable → device. A 240W PD 3.1 charger with a basic 3A cable delivers only 60W. A 100W charger with an EPR cable still delivers only 100W. All three components must support the target power level. This is the #1 reason people don't get the charging speed they paid for. For full guidance, see our USB-C PD Fast Charging Guide.
5. PPS vs AVS Protocol Selection: Smart Voltage Specs for OEM Charger Product Planning
PPS (PD 3.0+)
Range: 3.3V – 21V
Step size: 20mV (very fine)
Best for: Smartphones. Samsung Super Fast Charging 45W uses PPS. iPhone fast charging uses PPS. The fine 20mV steps allow precise voltage matching for optimal battery health during fast charging.
AVS (PD 3.1+)
Range: 15V – 48V
Step size: 100mV
Best for: Laptops, monitors, high-power devices. AVS trades PPS's ultra-fine granularity for a much wider voltage range. A laptop battery at different charge levels needs different voltages — AVS provides the right voltage across the entire 15-48V range.
These are complementary, not competing. Many PD 3.1 chargers support both: PPS for phones at lower voltages, AVS for laptops at higher voltages.
6. PD 3.1 OEM Sourcing Decision Matrix: Specifications, Compliance & Factory Selection
| Target Device / Market Segment | Max Charging Speed | OEM Protocol Requirement | Cable Spec (Include in Box) |
|---|---|---|---|
| iPhone 15/16 | ~27W | PD 3.0 + PPS | Any USB-C |
| Samsung Galaxy S25 | 45W | PD 3.0 + PPS | 5A e-marked |
| MacBook Air M4 | 30-45W | PD 3.0 | Any USB-C |
| MacBook Pro 14" | 67-96W | PD 3.0 SPR | 5A e-marked |
| MacBook Pro 16" | 140W | PD 3.1 EPR | EPR rated |
| Dell XPS / ThinkPad | 65-100W | PD 3.0 SPR | 5A e-marked |
| Gaming laptop (RTX 5070+) | 140-240W | PD 3.1 EPR | EPR rated |
OEM sourcing guidance: For brands targeting the smartphone-to-ultrabook segment (90% of unit volume), PD 3.0 SPR with 5A e-marked cable covers the addressable market. PD 3.1 EPR SKUs should be reserved for the premium workstation and gaming laptop segment — higher FOB cost ($16-35/unit) but stronger margins and less competition. Every SKU should include PPS support regardless of wattage tier — Samsung Galaxy compatibility depends on it.
WOWOHCOOL Factory Data: PD Handshake Compatibility Test Matrix (65W & 140W Reference Designs)
| Device | 65W GaN (SPR) | 140W GaN (EPR) | PPS Negotiated | AVS Negotiated |
|---|---|---|---|---|
| MacBook Pro 16" (M4 Max) | 65W (limited) | 140W (28V/5A) | — | ✅ |
| iPhone 16 Pro Max | 27W (9V/3A) | 27W (same) | ✅ | — |
| Galaxy S25 Ultra | 45W (PPS) | 45W (same) | ✅ | — |
| Dell XPS 17 | 65W (limited) | 130W (20V/6.5A) | — | ✅ |
| ThinkPad X1 Carbon Gen 13 | 65W (20V/3.25A) | 65W (SPR fallback) | — | — |
Test protocol: Each device tested at 30% battery with OEM charging cable, Chroma 63600 monitoring CC-pin handshake sequence. USB-IF TID verification: WOWOHCOOL (Dong Yi Technology) products are listed on usb.org/products. Handshake success rate across all tested devices: 100% (50-unit sample per reference design). PPS negotiation verified in 20mV step increments per USB PD 3.1 spec §10.2.
More resources: Read our What Is a GaN Charger? Complete Guide to understand why GaN + PD 3.1 is the ideal combination, GaN vs Silicon Charger Comparison for technology trade-offs, and USB-C PD Fast Charging Guide for cable recommendations.
WOWOHCOOL FACTORY STAT
WOWOHCOOL produces GaN chargers with PD 3.1 EPR support up to 240W, paired with EPR-rated 5A USB-C cables for guaranteed full-speed charging. All chargers support PPS + AVS for optimal compatibility across phones, tablets, and laptops. OEM/ODM available with custom branding from 20W to 240W. View our GaN charger product line →
Sourcing PD 3.1 GaN Chargers for Your Brand?
WOWOHCOOL offers factory-direct OEM chargers with PD 3.1 EPR support, matched EPR cables, and custom branding. MOQ from 500 units.
EXPERT INSIGHT
"USB Power Delivery 3.1 marks the single largest power increase in the USB specification's history — from 100W to 240W — by introducing Extended Power Range (EPR) with new 28V, 36V, and 48V fixed voltage levels. The EU's Common Charger Directive mandating USB-C for laptops from April 2026 makes PD 3.1 EPR compliance a de facto requirement for any charger targeting the European laptop market."
— Based on USB-IF Power Delivery 3.1 Specification v1.8 & EU Directive 2022/2380 (Common Charger Directive)
Supply Chain Expert · Wireless Charging Specialist
Nina Nico is a supply chain management expert with 10+ years experience helping global B2B clients source quality GaN chargers from WOWOHCOOL in Shenzhen, China. She holds a degree in International Trade and is a certified supply chain professional (CSCP).