Configurable DC/DC converter features up to 95% efficiency
Designed for space-constrained, high temperature applications, a four-channel buck DC/DC converter with PMBus/I2C digital interface has been unveiled by Texas Instruments. Suited for small cell base stations, infotainment and solid state devices., the TPS65400 dual- or quad-output configurable DC/DC converter integrates eight power MOSFETs and features industry-leading efficiency at up to 95% in the smallest footprint.
The TPS65400 includes four high-current synchronous buck switching regulators with integrated MOSFETs. Each switching converter supplies a 2 or 4A output to efficiently power digital circuits such as the processor, FPGA, ASIC, memory and digital input/output. Switching frequency for the converter is independently adjustable up to 2.2MHz. The TPS65400, which can be powered from a single-input voltage rail between 4.5 and 18V, supports applications running off a 5 or 12V intermediate power distribution bus.
The converter features flexible power up/down sequencing control to increase system reliability, parameter configuration and status monitoring via PMBus to enhance system intelligence, dynamic voltage scaling to optimise processor performance, phase interleaving to reduce input capacitance and ripple and current sharing to support higher output current and enhance design flexibility.
Offered in a 7x7x0.9mm 48-pin, thermally-enhanced VQFN package, the TPS65400 is available now from $3.68 in 1,000 unit quantities.
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