5x7mm DC/DC Converter For Space-constrained Systems

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Texas Instruments has unveiled what it claims the industry’s first 16V input, 40A synchronous DC/DC buck converter with an internally compensated advanced-current-mode (ACM) control topology supporting frequency synchronization. Designers can stack two converters side by side to drive loads up to 80 A for processors in space-constrained and power-dense applications including wireless communications, enterprise and cloud computing, and data storage systems.

TI says its TPS543C20 SWIFT converter integrates low resistance high and low-side MOSFETs with low-loss switching to enable high efficiency of greater than 90 percent at 40 A peak load current in a 5 mm x 7 mm thermally efficient package. Two TPS543C20 devices can be stacked together to provide up to 80A point-of-load.

The unique internally compensated ACM control topology with fast transient response maintains stability over a wide range of input and output voltages, according to TI.

As development support, TI offers the 1V, 20A Highly Integrated Synchronous Buck Converter Reference Design and two evaluation modules – 40A TPS543C20EVM-799 or stacked 80A TPS543C20EVM-869.

For similar applications at 25 A, TI offers the TPS543B20 in a pin-to-pin-compatible PowerStack QFN package. For those applications requiring PMBus to support telemetry, TI offers the stackable 35-A TPS546C23 SWIFT synchronous buck converter.

The TPS543C20 is offered in a 40-pin, 5mm x 7mm x 1.5mm PowerStack QFN package and is priced in small reels at US$5.24 for 1,000-unit quantities.

For more information, samples and an evaluation module, see www.ti.com/tps543c20-pr

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