Highly integrated DC/DC converter for space-constrained automotive and communication applications features up to 95-percent efficiency
Bangalore, 31st March 2015 — Texas Instruments (TI) (NASDAQ: TXN) today introduced a
four-channel buck DC/DC converter with PMBus/I2C digital interface for applications
in space-constrained equipment that experience high ambient operating temperature
without cooling, such as small cell base stations, infotainment and solid state
devices. dual- or quad-output
configurable DC/DC converter integrates eight power MOSFETs and features
industry-leading efficiency at up to 95-percent in the smallest footprint.

[Industry’s first 18-V multi-channel synchronous buck converter with PMBus™ digital
interface for space-constrained automotive and communication applications features
up to 95-percent efficiency.]

The TPS65400 includes four high-current synchronous buck switching regulators with
integrated MOSFETs. Each switching converter supplies a 2-A or 4-A 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 2.2 MHz. The TPS65400, which can be powered from a single-input
voltage rail between 4.5 V and 18 V, supports applications running off a 5-V or 12-V
intermediate power distribution bus.