LMZ34002EVM-001: -3 ~ -17V @ 2A, 4.5 ~ 40V in

Summary

The LMZ34002EVM-001 Evaluation Module is designed as an easy-to-use platform that facilitates an extensive evaluation of the features and performance of the Simple Switcher® power module. This guide provides information on the correct usage of the EVM and an explanation of the numerous test points on the board.

The EVM features a LMZ34002 device configured for operation from a 4.5 V to 40 V input supply. The LMZ34002 is a non-synchronous, buck-boost (negative output) converter optimized for output voltages between -3 V and -17 V. The LMZ34002 operates at a fixed frequency of typically 800 kHz. The output voltage can be set to one of four popular values by using a simple configuration jumper. The EVM can supply up to 2 A of output current depending on the input and output voltage.

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.

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 UVLO behavior.

The EVM uses a recommended 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	296-37107-ND
Eval Board Supplier	Texas Instruments
Eval Board	Normally In Stock
Topology	Inverting
Outputs and Type	1 Non-Isolated
Voltage Out: Factory Set	-3.3 V -5 V -12 V -15 V
Current Out	2 A
Voltage In	4.5 ~ 40 V
Efficiency @ Conditions	>82%, 5V in, -15V @ 0.05 ~ 0.2 A >82%, 5V in, -12V @ 0.05 ~ 0.3 A >80%, 5V in, -5V @ 0.05 ~ 0.5 A >80%, 36V in, -15V @ 0.25 ~ 1.4 A >80%, 36V in, -12V @ 0.3 ~ 1.75 A >75%, 5V in, -3.3V @ 30 ~ 70 mA >75%, 36V in, -5V @ 0.1 ~ 2 A >72%, 36V in, -3.3V @ 0.1 ~ 2 A
Voltage Out Range	-3 ~ -17 V
Features	Over Current Protection Shutdown, Enable, Standby Soft Start Synchronizable Thermal Protection Under Voltage Protection, Brown-Out
Switching Frequency	700 ~ 900 MHz
Standby Current [Typical]	1.3 µA
Quiescent Current [Typical]	- Not Given
Component Count + Extras	17 + 12
Internal Switch	Yes
Design Author	Texas Instruments
Application / Target Market	Audio: Hi Fi Audio: Home Theater Systems Motor Control Power: Auxiliary Power Supply Power: Industrial Power
Standby Current [Maximum]	4 µA
Quiescent Current [Maximum]	- Not Given
Main I.C. Base Part	LMZ34002
Date Created By Author	2013-07
Date Added To Library	2014-05