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Scan for outdated or missing drivers - takes under a minuteDriver Scan →Repair Windows errors before they cause bigger problemsFix Now →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Ryan Ma’s PD Micro combines an Arduino Pro Micro-compatible ATmega32U4 board with a USB-C Power Delivery sink and a switched power output. With a compatible USB-C PD source, it can negotiate a supply level up to 20 V for projects that need more than ordinary USB power. It does not generate 20 V from any USB connection: the source must offer a suitable PD profile, and the connected load must stay within the negotiated supply and the board’s documented limits.
What the PD Micro does
PD Micro is built around an ATmega32U4 running at 5 V and 16 MHz, and is designed for Arduino Pro Micro-style compatibility and pinout. Its USB-C power-delivery communication uses an FUSB302 PHY on the CC pins. A TPS62175 DC-DC converter and a P-channel MOSFET load switch are part of the documented design. The project also lists five voltage-indicator LEDs, three current-indicator LEDs, and a two-position 3.5 mm terminal block for the switched power output. These are specifications published by the project, not independent test results. PD Micro project repository
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The board is listed at 1.6 × 0.7 inches, roughly 0.3 inches longer than a Pro Micro. Crowd Supply described it as bringing 5–20 V USB-C PD output to Pro Micro-style Arduino projects, including uses such as motor control or high-power LEDs. The value is that the microcontroller can request a suitable supply and control whether that supply reaches a separate load, rather than requiring a separate power source for every project. Crowd Supply campaign
Where the 20 V comes from
USB-C alone does not guarantee a 20 V supply. PD Micro negotiates with a USB-C PD source, such as a compatible adapter, and can select only a power option that the source makes available. The project’s “up to 20 V” description is therefore a selectable negotiated level, not a voltage the board boosts from an arbitrary USB port. The required source depends on the voltage and current the project load needs. PD Micro project repository
#1 Best Overall
- ❃❃Power electronic projects or convert older hardware to use the USB-C power input
- ❃❃Supports PD2.0 PD3.0 QC FCP AFC voltage trigger output, and 5V/9V/12V/15V/20V trigger output.
- ❃❃Ultra-low power consumption, supports 20V/5A, 100W ouput.
- ❃❃Size: 21.5x11.5x4.2mm； Weight: 4g Note： there are not all USB-C power supplies can support all voltages
- ❃❃Package：5PCS Type-C PD3.0 QC Trigger Board USB-C PD 9V 12V 15V 20V 5A Adjustable Voltage Fast Charge Power Trigger Module USB-C Female Input with QC Trigger Housing
The documented output path includes a load switch controlled by the board. Project code can check the negotiated voltage and current before enabling that switch, which lets a sketch avoid connecting a load when the available supply is unsuitable. The repository cautions that PD Micro itself does not provide USB PD over-current protection. If a load draws too much, the source’s protection may activate; the resulting voltage dip can reset the board’s microcontroller. Design around the negotiated supply and the project’s actual current needs rather than treating the terminal block as an unrestricted power supply. PD Micro project repository
How a sketch negotiates power and enables the output
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Initialize the PD user-device object with an appropriate maximum power option. A 20 V maximum is a request ceiling, not a guarantee that the attached source will provide that level.
Rank #2
Sale
4 Pack USB-C PD Trigger Board Module, PD/QC Decoy Fast Charge- Plug and Play: Supports multiple fast charging protocols including PD3.0/2.0, QC, and BC1.2. Plug and play without additional drivers; the protocol is automatically triggered upon connection. Maximum output power reaches 100W, meeting the needs of most high-power devices.
- Adjustable Voltage Range: Equipped with a convenient DIP switch, it allows flexible switching between five fixed voltage modes within a 5V to 20V range. Simple operation allows for flexible adaptation to the power output testing and power supply needs of different devices.
- Specifications: The product measures approximately 7.87*4.72*0.59 inches. Made of high-quality aluminum, it features a compact, robust, and durable design, facilitating installation, storage, and portability, making it suitable for various usage scenarios.
- Safe and Convenient: Built-in over-temperature and over-voltage protection circuits, combined with a solderless screwless terminal design, ensures convenient and safe wiring, providing stable power transmission and preventing device damage for worry-free use.
- Multifunctional PD tester: The USB-C interface supports reversible plugging and unplugging, has wide compatibility, and is suitable for various scenarios such as electronic product repair, DIY projects, fast charging testing, emergency power supply for laptops, and LED strip driving.
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Keep the firmware run loop responsive while negotiation is in progress. The project recommends calling it at intervals under 10 ms so the board can respond to negotiation messages.
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Wait for negotiation to complete, then inspect the reported voltage and current. The repository says negotiation typically takes less than a second, but actual timing depends on the source and setup.
Rank #3
Seloky USB-C PD Trigger Board Module PD/QC Decoy Fast Charge USB Type-c to 12V High Speed Charger Power Delivery Boost (4PCS)- VERSATILE PD TESTER: Supports various fast charging protocols such as PD3.0/2.0 and BC1.2, providing a maximum power output of 100W. It includes like over-temperature and over-voltage protection
- ADJUSTABLE VOLTAGE RANGE: Equipped with a convenient DIP switch, allowing voltage adjustment from 5V to 20V. This enables flexibility in testing different devices and their power delivery capabilities
- WIDE COMPATIBILITY: Compatible with PD3.0/2.0 and BC1.2 fast charging protocols, ensuring compatibility with a wide range of devices. Users can confidently test and verify the charging performance of various gadgets
- USB TYPE-C PD SUPPORT: Specifically designed with USB Type-C PD support, enabling seamless connection and automatic switching for both forward and reverse insertion. This ensures hassle-free testing for devices with various input voltages between 4V and 22V
- RELIABLE POWER DELIVERY: With its support for high-power outputs and protective like over-temperature and over-voltage protection, this PD tester provides a reliable and safe means of evaluating and analyzing the power delivery capabilities of different devices
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Enable the load switch only when the negotiated values meet the load’s requirements. If they do not, leave the output off or request a suitable option supported by the source.
The project documentation and library describe these behaviors; they are not a guarantee that every charger, cable, or load combination will behave identically. PD Micro project repository
Rank #4
- 【High Power Output】This USB C PD Trigger Board Module supports up to 100W (20V/5A) power delivery, meeting the requirements of most high-power consumption devices. Please ensure your power source and load device operate within this power range and support the voltage and power you are "decoying" through this PD/QC Decoy Board
- 【Plug-and-Play】Supporting PD3.0/PD2.0 fast charging protocols with backward compatibility for QC, BC1.2, and other common protocols. It automatically triggers the protocol upon connection, requiring no additional drivers for true plug-and-play convenience and efficient operation
- 【Reliable Power Delivery】USB C power delivery Module allows easy switching between five fixed voltage profiles (5V/9V/12V/15V/20V) via the DIP switch. (Note: Please use a multimeter to verify the output voltage before connection, and confirm the switch combination according to the diagram).boost module Features over-temperature and over-voltage protection to ensure safe and stable power transmission for device evaluation and analysis
- 【Safe & Convenient】Equipped with built-in over-voltage and over-temperature protection circuits for added safety. Features screw terminals with solder-free design for convenient wiring and enhanced flexibility. Ensure correct polarity when connecting and use in well-ventilated environments
- 【Broad Compatibility】Supports reversible USB-C insertion. Ideal for electronic product repair, DIY project power supply, fast-charging protocol testing, emergency laptop power, LED strip driving, hardware development and debugging, and more
When PPS matters
PD Micro’s project documentation describes USB PD 3.0 Programmable Power Supply (PPS) support. PPS can allow a compatible source and board to negotiate voltage in 20 mV steps, with requested current limits in 50 mA steps. The repository lists possible source-dependent voltage ranges of 3.3–5.9 V, 3.3–11 V, 3.3–16 V, or 3.3–21 V. Those ranges are not universal adapter capabilities: the attached source must support the relevant PPS range, and the library must qualify it. If PPS is unavailable or not qualified, the library falls back to a conventional PD power option. The firmware also documents clock prescaling when requesting PPS below 4.5 V. PD Micro project repository USB-IF USB Charger (USB Power Delivery) page
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A PPS-capable adapter is only necessary if the project specifically needs PPS’s finer voltage control. For a conventional fixed PD level, use a source that supports the required PD option; neither PPS nor a particular charger wattage is universally required by the board description.
Best Value
- you will get 5PCS PD/QC Decoy Board Fast Charge USB Boost Module Type-c PD2.0 PD3.0 9V 12V 15V 20V Fast Charge Trigger Polling Detector Module
- Support a variety of fast charging protocols: PD3.0/2.0, PPS/QC4+, QC3.0/2.0, FCP, AFC
- The size of the decoy board: 23*11.5*4mm
- TYPE-C port power supply;Turn some traditional DC-powered devices into TYPE-C port power supply
Availability and what is not established
The Crowd Supply campaign currently labels its offer “Not Available.” A Mouser product overview exists, but the available information does not establish live stock or a current price. Check the seller’s current listing before planning a build around purchasing the board. Crowd Supply campaign Mouser product overview PDF
The published specifications explain the board’s intended operation, but no independent electrical test results or current competing-product comparison are established here. Treat the limits and timings as project documentation, and verify the source, load, and protection requirements for your own circuit.
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