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

Media

PMP9483_Schematic_Full.png PMP9483_Board_Full.jpg PMP9483_Board_2_Full.jpg PMP9483_Chart_1_Full.png PMP9483_Chart_2_Full.png PMP9483_Chart_3_Full.png PMP9483_Chart_4_Full.png