The PMP9146 utilizes the TPS53515 DCAP3-mode SWIFT stepdown DC-DC converter to power high-current ASIC core rails at 1.2Vout/12A, with only 247mm2 of total power supply area and 27 total components.
Features
– 247mm2 total power supply area
– Only 3x100uF small output ceramic capacitors needed for 8A load transient
– Meets total +/-3% DC and AC load regulation
– 27 total power supply components (including IC)
– DCAP3 control mode requires no loop compensation, and can use ceramic output caps with no need for external ripple synthesizer circuit
– Single GND Copper pad for easy PCB layout and heatsinking into internal PCB GND layers
Includes the TPS53515, 1.5V to 18V input (4.5V to 25V Bias), 12-A synchronous step-down SWIFT™ converter. The TPS53515 is a small-sized, synchronous buck converter with an adaptive on-time D-CAP3 control mode. The device offers ease-of-use and low external-component count for space-conscious power systems.
This device features high-performance integrated MOSFETs, accurate 0.5% 0.6-V reference, and an integrated boost switch. Competitive features include very-low external-component count, fast load-transient response, auto-skip mode operation, internal soft-start control, and no requirement for compensation.
A forced continuous conduction mode helps meet tight voltage regulation accuracy requirements for performance DSPs and FPGAs. The TPS53515 is available in a 28-pin QFN package and is specified from –40°C to +85°C ambient temperature.
Learn more by downloading the reference design below.
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