The TPS2586x-Q1 is a full-featured solution for implementing a compact USB charging port with support BC1.2 standards. The device contain an efficient buck regulator power source. For dual Type-A ports, the TPS2586x-Q1 is capable of providing up to 5 A of output current at 5.17 V (nominal), 2.4 A for each Type-A port, 200 mA for the OUT pin. The TPS2586x-Q1 is an automotive-focused USB charging controller and offers a robust solution, so TI recommends 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–2400 kHz with sufficient margin to operate above or below the AM radio frequency band. TPS2586x-Q1 protects itself with internal thermal sensing circuits that monitor the operating temperature of the junction and disables operation if the temperature exceeds the Thermal Shutdown threshold, so in high ambient temperature application, the 5-A output current capability is not assured. 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 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.

The device can support the legacy Battery Charging Specification Rev 1.2 (BC1.2) DCP mode with an auto-detect feature to charge not only BC1.2-compliant handheld devices, but also popular phones and tablets that incorporate their own propriety charging algorithm.