9 x 15-mm module houses 12V, 10A DC/DC step-down

February 14, 2017 // By Graham Prophet
Texas Instruments has added a pair of 12V, 10A, 4 MHz step-down power modules that provide a power management solution that is 20% smaller than any comparable module-based solution available. Highly integrated SWIFT power modules eliminate input and output capacitors to provide best transient performance for space-constrained applications.

SWIFT TPSM84A21 and TPSM84A22 DC/DC modules integrate power MOSFETs, shielded inductors, input and output capacitors, and passives into a tiny, low profile footprint. It provides as little as 1% overshoot in transient conditions without special magnetics or additional capacitors.


By using the step-down power module together with TI’s WEBENCH Power Designer, the company says engineers can get their space-constrained point-of-load (POL) telecom, networking, and test and measurement power-supply designs to market faster.


The highly integrated modules require just one external voltage-setting resistor for a complete 12V step-down power solution. For an application such as powering tightly regulated field-programmable gate array (FPGA) rails, a typical 10A module would require up to 16 external capacitors. In comparison, the TPSM84A21 provides ultra-low output ripple due to the very high 4 MHz switching frequency and integrated 185 µF of output capacitance, which maintains regulation accuracy without any external capacitors. In a 20-pin quad flat micro (QFM) package, the modules are priced at $8.63 (1,000).


TI; www.ti.com/tpsm84a21-pr-eu


An application note is available; “ How to Dynamically Adjust Power Module Output Voltage ,” to find out how to change voltage-regulator output on the fly for supply-voltage margining, output tracking, adaptive voltage scaling (AVS), optimizing load power consumption and supporting different system operating modes.