PMP9483: 5V, 1.8V, and 2.5V @ 1A, 7 ~ 30V in

Summary

The PMP9483 reference design is a very-tightly laid-out triple-output power supply design featuring the new LM43603 36-Volt, 3-Amp synchronous SIMPLE SWITCHER converter, and two LMZ10501 nano modules. The LM43603 is taking a wide input voltage of up to 36 Volts and converting it down to 5 Volts, and then the LMZ10501s are converting that 5 Volts down to 1.8 Volts and 2.5 Volts, all in a very small overall solution size of 30mm x 20mm. This design is EMI CISPR22 Class B compliant.

This is a design targeted for the Industrial market with the LM43603 and LMZ10501. It is a three output design 5V, 1.8V and 2.5V. Small form factor was a design criterion.

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	1.8V, 2.5V, 5V
Current Out	1A per Channel
Voltage In	7 ~ 30 V
Efficiency @ Conditions	>82%, 24V in, 5V @ 0.3 ~ 1 A >82%, 12V in, 5V @ 0.2 ~ 1 A >76%, 12V in, 2.5V @ 0.3 ~ 1 A >74%, 24V in, 2.5V @ 0.4 ~ 1 A >71%, 12V in, 1.8V @ 0.2 ~ 1 A >70%, 24V in, 1.8V @ 0.4 ~ 1 A
Voltage Out Range	1 ~ 28 V, 0.6 ~ 3.6 V
Features	Current Limit (Adj. or Fixed) Internal Inductor Over Current Protection Power Good Output Pre-Biased Startup Short Circuit Protection Soft Start Synchronizable Thermal Protection Under Voltage Protection, Brown-Out Voltage Tracking
Switching Frequency	200 kHz
Standby Current [Typical]	1.2 µA
Quiescent Current [Typical]	5 µA
Component Count + Extras	47 + 11
Internal Switch	Yes
Design Author	Texas Instruments
Application / Target Market	Automotive Point of Load (PoL) Power: Industrial Power Telecom
Standby Current [Maximum]	3.1 µA
Quiescent Current [Maximum]	10 µA
Main I.C. Base Part	LM43603 LMZ10501
Date Created By Author	2014-09
Date Added To Library	2015-01

Support Documents & Media

LMZ10501 - Datasheet PMP9483 - Design Page LM43603 - Datasheet PMP43603 - BOM