Industry’s smallest 12-V, 10-A DC/DC step-down power solution

14th February 2017
Posted By : Lanna Cooper
Industry’s smallest 12-V, 10-A DC/DC step-down power solution

A pair of 12V, 10A SWIFT step-down power modules has been introduced by Texas Instruments, providing a complete power management solution. The 4MHz step-down power modules provide a power management solution that is 20% smaller than any other 10A power module-based solution available.

The easy-to-use SWIFT TPSM84A21 and TPSM84A22 DC/DC modules integrate power MOSFETs, shielded inductors, input and output capacitors, and passives into a tiny, low profile footprint. In addition, they provide industry leading performance, with 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, engineers can get their space-constrained Point-Of-Load (POL) telecom, networking, and test and measurement power-supply designs to market faster. TI will demonstrate the TPSM84A22 module in its booth (No. 701) at the Applied Power Electronics Conference (APEC), 27-29th March in Tampa, Florida.

Unlike other 10A step-down modules available, the highly integrated TPSM84A21 and TPSM84A22 require just one external voltage-setting resistor for a complete 12-V 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 4MHz switching frequency and integrated 185 microfarads of output capacitance, which maintains regulation accuracy without any external capacitors.

TPSM84A21 and TPSM84A22 key features and benefits:

  • Tiny solution: A 9mm by 15mm module and a single external voltage-setting resistor make up a complete solution footprint of 11mm by 15mm.
  • Low profile: Measuring 2.3mm in height, the small size, weight and bill of materials enable placement of the complete solution on the back side of a printed circuit board.
  • Best transient performance: 4MHz switching enables 1% overshoot without any external capacitors.
  • Easy to design: Integrated input and output capacitors eliminate the loop compensation and magnetics part selection from the design process. Use WEBENCH Power Designer to quickly create a complete 12V, 10A DC/DC step-down solution with just one voltage-setting resistor.


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