CH221K USB PD/QC Fast Charge Trigger Controller (5V-20V Decoy IC)

Ditch bulky proprietary power bricks and power your custom projects directly from a modern USB-C Power Delivery (PD) charger or power bank using the CH221K fast-charge trigger IC. Standard USB-C ports output a safe 5V by default, but this brilliant little "decoy" chip communicates directly with the charger's smart circuitry to request higher voltages—specifically 9V, 12V, 15V, or even 20V. It is the absolute best way to modernize your gear, allowing you to power smart soldering irons, FPV LiPo chargers, or wireless routers using a single, universal USB-C cable.

Whether you are designing a custom field-charging case for your drone batteries or upgrading legacy DC-barrel devices to Type-C, the CH221K drastically simplifies the process. It automatically negotiates the highest supported voltage or a specific voltage set by the circuit design. Requiring virtually no external components, this microscopic chip fits onto the tiniest of adapter boards, saving critical space while safely unlocking up to 100W (20V @ 5A) of power from compatible chargers.

Key Features:

• Multi-Voltage Triggering: Easily configures standard USB-C PD or Quick Charge (QC) power supplies to output 5V, 9V, 12V, 15V, or 20V.

• USB-C Modernization: The perfect IC for converting older 12V or 20V DC-jack electronics to the modern, universal Type-C standard.

• High Power Unlocked: Capable of negotiating up to 100W of power delivery (depending on the source charger and e-marked cable capabilities).

• Minimalist Integration: Requires extremely few external components, making it incredibly easy to integrate into DIY PCBs and tight enclosures.

Specifications:

• Part Number: CH221K

• IC Type: USB PD / QC Sink Controller (Decoy / Trigger Chip)

• Supported Voltages: 5V, 9V, 12V, 15V, 20V

• Supported Protocols: USB Power Delivery (PD), Quick Charge (QC)

• Package Type: Miniature SMD Package (typically SOT-23-6)