The TPS2586x-Q1 is a full-featured solution for implementing a compact USB charging port with support for both Type-C and BC1.2 standards. Both devices contain an efficient buck regulator power source. For Type-C and Type-A dual ports, the TPS2586x-Q1 is capable of providing 6 A of output current at 5.17 V (nominal), 3 A for Type-C port, 2.4A for Type-A port, 200 mA for the OUT pin, and 200 mA for Port A VCONN power. The TPS2586x-Q1 is an automotive-focused USB charging controller and offers a robust solution, so it is recommend to add adequate protection (TVS3300 equivalent or better but auto qualified) on the IN pin to protect systems from high-power transients or lightning strikes.

System designers can optimize efficiency or solution size through careful selection of switching frequency in the range of 200 KHz - 800 KHz with sufficient margin to operate below the AM radio frequency band. In the TPS2586x-Q1, the buck regulator operates in forced PWM mode, ensuring fixed switching frequency regardless of load current. Spread-spectrum frequency dithering reduces harmonic peaks of the switching frequency, potentially simplifying EMI filter design and easing compliance.

Current sensing through a precision FET current sense amplifier on the USB port enables an accurate, user-programmable overcurrent limit setting, and linear cable compensation to overcome IR losses when powering remote USB ports.

The TPS2586x-Q1 includes a TS input for user-programmable thermal protection using a negative temperature coefficient (NTC) resistor.

Both devices can support the USB Type-C protocol on the port A. For the TPS25868-Q1, it also supports the legacy Battery Charging Specification Rev 1.2 (BC1.2) DCP mode with an auto-detect feature to charge not only BC1.2-compliant hand-held devices, but also popular phones and tablets that incorporate their own propriety charging algorithm.