PMP9462: 5V @ 3A, 1.8V and 2.5V @ 1A, 7 ~ 36V in

Summary

The reference design PMP9462 is a single input step-down converter with three low-noise outputs. The module uses LM43603, a synchronous step-down DC-DC converter capable of driving up to 3A of load current from an input voltage ranging 7V to 36V. The 5V output from LM43603 enables the LM26420 which further steps down this voltage to produce 1.8V and 2.5V outputs, capable of driving 1A load current each.

This power supply is suitable for applications that require multiple outputs from a single input DC voltage. It provides good regulation performance over an input voltage range of 7V to 36V.

Specifications

Manufacturer	Texas Instruments
Category	AC/DC and DC/DC Conversion
Sub-Category	DC/DC SMPS - Multi Output
Eval Board	Board not Stocked
Topology	Step Down
Outputs and Type	3 Non-Isolated
Voltage Out: Highest Current First	5V, 1.8V, 2.5V
Current Out	3A, 1A, 1A
Voltage In	7 ~ 36 V
Efficiency @ Conditions	>80%, 24V in, 5V @ 0.4 ~ 1 A >80%, 12V in, 5V @ 0.2 ~ 1 A >70%, 24V in, 2.5V @ 0.4 ~ 1 A >70%, 12V in, 2.5V @ 0.3 ~ 1 A >70%, 12V in, 1.8V @ 0.4 ~ 1 A >60%, 24V in, 1.8V @ 0.4 ~ 1 A
Voltage Out Range	1 ~ 28 V, 0.8 ~ 4.5 V
Features	Current Limit (Adj. or Fixed) Over Voltage Protection Power Good Output Pre-Biased Startup PWM Interface Short Circuit Protection Shutdown, Enable, Standby Soft Start Synchronizable Thermal Protection Voltage Reference Voltage Tracking
Switching Frequency	500 kHz
Standby Current [Typical]	1.2 µA
Quiescent Current [Typical]	5 µA
Component Count + Extras	48 + 19
Internal Switch	Yes
Design Author	Texas Instruments
Application / Target Market	Automotive FPGA / DSP / Processors Point of Load (PoL) Power: Industrial Power Telecom USB Powered Devices
Standby Current [Maximum]	3.1 µA
Quiescent Current [Maximum]	10 µA
Main I.C. Base Part	LM26420 LM43603
Date Created By Author	2014-08
Date Added To Library	2015-01