I2C Interface USB PD3.1 EPR Sink Controller
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The AP33772S is a highly integrated USB Type-C ® PD3.1 sink controller to support Extended Power Range (EPR) / Adjustable Voltage Supply (AVS) up to 28V and Standard Power Range (SPR) / Programmable Power Supply (PPS) up to 21V. The device is targeted for DC power request and control for flexible Type-C Connector-equipped Devices (TCDs) with an embedded host MCU (Micro Controller Unit) and I2C interface pins (SCL, SDA).
Through the I2C interface interaction and interrupt mechanism, the host MCU sets up proper desired power profile (programmable voltage and current) with relevant threshold (OTP, OCP, etc.) and delegates PD negotiation tasks to the AP33772S. The host MCU further inquiries about status of various I2C registers for intended applications.
Based on high-voltage process, the AP33772S offers short protection between CC1/CC2 pins to adjacent high-voltage pin up to 34V. Smart built-in firmware of the AP33772S offers comprehensive safety protection scheme, including overvoltage protection (OVP), undervoltage protection (UVP), overcurrent protection (OCP), overtemperature protection (OTP) and moisture detection of the Type-C connector. In addition, external OTP and thermal de-rating are supported by a NTC resistor.
Meanwhile, the AP33772S provides a LED pin to indicate the different PD power negotiation results, and a FLIP pin to show the cable plugin orientation.
Compliance (Only Automotive(Q) supports PPAP) | Standard |
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Protocols Supported | USB PD3.1 EPR (MCU + OTP + Hardwired) |
Power Role | UFP (Upstream-Facing Port) Sink |
I2C Support | Yes |
SR Controller Embedded | No |
VBUS MOS Embedded | No |
VCC Maximum Rating | 34 |
VCC UVLO (V) | 2.7 |