36-V, 16-A buck-boost converter

The TPS552882 is a synchronous

four-switch buck-boost converter capable of regulating the output voltage at, above,

or below the input voltage. The TPS552882 operates over a 2.7-V to 36-V wide input

voltage and is capable of outputing 0.8-V to 22-V voltage to support a variety of

applications.

The TPS552882 integrates two 16-A

MOSFETs of the boost leg to balance the solution size and efficiency. The TPS552882

uses an external resistor divider to set the output voltage with 1.2V internal

reference voltage. The TPS552882 is capable of delivering 100 W from 12-V input

voltage.

The TPS552882 employs average

current-mode control scheme. The switching frequency is programmable from 200 kHz to

2.2 MHz by an external resistor and can be synchronized to an external clock. The

TPS552882 also provides optional spread spectrum to minimize peak EMI.

The TPS552882 offers output

over-voltage protection, average inductor current limit, cycle-by-cycle peak current

limit and output short circuit protection. The TPS552882 also ensures safe operating

with optional output current limit and hiccup-mode protection in sustained overload

conditions.

The TPS552882 can use a small inductor

and small capacitors with high switching frequency. It is available in a 4.0-mm ×

3.5-mm HotRod QFN package.