22V 8A buck-boost converter with I2C interface | VAL | 15 | -40 to 125

The TPS55285A is a fully integrated, synchronous buck-boost converter that is designed for converting battery voltage, USB power delivery (USB PD) or adapter voltage into power supply rails. The TPS55285A integrates four 15mΩ MOSFETs to provide a high efficiency and small design size.

The TPS55285A has a wide input voltage range from 2.4V (3.0V rising) to 22V and is capable of outputting 0.8V to 22V voltage with 10mV step to support a variety of applications. The TPS55285A features 8A average inductor current limit and supplies up to 7A output current in buck mode. In boost mode, the device is able to deliver 60W from 12V input or 30W from 5V input.

Through the I2C interface, the output voltage of the TPS55285A is programmed dynamically. The default output voltage is 5V when the device is enabled. The I2C interface allows for configuration of slew rate of the output voltage change, switching frequency, forced PWM mode operation.

The TPS55285A offers input and output overvoltage protection, average inductor current limit, cycle-by-cycle peak current limit and output short circuit protection. The TPS55285A also allows for safe operating with output current limit without external output current sense resistor and hiccup mode protection in sustained overload conditions.