25V 20A bidirectional buck-boost converter

The TPS61289 is a bidirectional buck/boost synchronous converter that integrates the

high-side synchronous rectifier MOSFET and uses an external low side MOSFET. The TPS61289

can be configured as a buck or boost converter using the MODE pin. The TPS61289 can support

20A switching current and the VHIGH voltage supports up to 25V. The minimum VLOW voltage is

determined by the VLOW/VHIGH ratio and frequency, for example, the VLOW voltage can support

as low as 0.5V at the VHIGH = 15V condition. The device provides an excellent balance of

efficiency, thermal dissipation and solution size for high power bidirectional

conversion.

The TPS61289 offers adjustable switching current

limit function. In addition, the device provides

VHIGH overvoltage and undervoltage protection,

cycle-by-cycle overcurrent protection, and thermal

shutdown protection.

The TPS61289 offers a very small solution size with 2.5mm x 3.0mm VQFN HotRod™ Lite package with

minimal external components.