3-V to 17-V, 3-A step-down converter with DCS-control in 3x3 QFN package

The TPS6213x family are easy-to-use synchronous

step down DC-DC converters optimized for applications with high power density. A

high switching frequency of typically 2.5 MHz allows the use of small inductors and

provides fast transient response as well as high output voltage accuracy by use of

the DCS-Control topology.

With their wide operating input voltage range of 3

V to 17 V, the devices are ideally suited for systems powered from either a Li-Ion

or other batteries as well as from 12-V intermediate power rails. They support up to

3-A continuous output current at output voltages between 0.9 V and 6 V (with 100%

duty cycle mode). The output voltage start-up ramp is controlled by the soft-start

pin, which allows operation as either a stand-alone power supply or in tracking

configurations. Power sequencing is also possible by configuring the Enable and

open-drain Power Good pins.

In power save mode, the devices draw quiescent

current of approximately 17 µA from VIN. Power save mode, entered

automatically and seamlessly if the load is small, maintains high efficiency over

the entire load range. In shutdown mode, the device is turned off and shutdown

current consumption is less than 2 µA.

The device, available in adjustable and fixed

output voltage versions, is packaged in a 16-pin VQFN package measuring 3 mm × 3 mm

(RGT).