LMZ35003EVM-001: 2.5 ~ 15V @ 2.5A, 7 ~ 50V in

Summary

The LMZ35003EVM-001 evaluation module is designed as an easy-to-use platform for evaluating the features and performance of the Simple Switcher® power module. This user's guide provides information on the correct usage of the LMZ35003EVM-001 and an explanation of the test points on the board.

The LMZ35003EVM-001 evaluation module (EVM) features a LMZ35003 device configured for operation from a 7-V to 50-V input supply. The output voltage can be set to one-of-five popular values by using a simple configuration jumper. Similarly, the switching frequency can be set to one-of-four values by use of a jumper. The full, 2.5-A-rated output current can be supplied by the EVM. A minimal amount of input and output capacitance is used on the board. Component pads are provided for additional input and output capacitors if desired. A simple 5-V pull-up supply for the PWRGD pin is provided on the EVM. It is powered from the input voltage supply.

Test points are provided that allow measurement of efficiency, power dissipation, input ripple, output ripple, line and load regulation, soft-start behavior, transient response, and undervoltage lockout (UVLO) behavior.

The EVM uses a recommended printed-circuit board (PCB) layout that maximizes thermal performance and minimizes output ripple and noise.

Specifications

Manufacturer	Texas Instruments
Category	AC/DC and DC/DC Conversion
Sub-Category	DC/DC SMPS - Single Output
Eval Board Part Number	296-37106-ND
Eval Board Supplier	Texas Instruments
Eval Board	Normally In Stock
Topology	Step Down
Outputs and Type	1 Non-Isolated
Voltage Out: Factory Set	2.5 V 3.3 V 5 V 12 V 15 V
Current Out	2.5 A
Voltage In	7 ~ 50 V
Efficiency @ Conditions	>85%, 12V in, 5V @ 0.5 ~ 2.5 A >80%, 12V in, 3.3V @ 0.05 ~ 2.2 A >75%, 12V in, 2.5V @ 0.05 ~ 2.3 A
Voltage Out Range	2.5 ~ 15 V
Features	Over Current Protection Power Good Output Pre-Biased Startup Soft Start Synchronizable Thermal Protection Under Voltage Protection, Brown-Out Voltage Tracking
Switching Frequency	300 kHz ~ 1 MHz
Standby Current [Typical]	1.3 µA
Quiescent Current [Typical]	- Not Given
Component Count + Extras	24 + 17
Internal Switch	Yes
Design Author	Texas Instruments
Application / Target Market	Medical Motor Control Power: Auxiliary Power Supply Power: Industrial Power
Standby Current [Maximum]	4 µA
Quiescent Current [Maximum]	- Not Given
Main I.C. Base Part	LMZ35003
Date Created By Author	2013-07
Date Added To Library	2014-05