Reference Design Library > AC/DC and DC/DC Conversion > DC/DC SMPS - Single Output > LMZ22003EVAL: 3.3V @ 3A, 6 ~ 20V in

LMZ22003EVAL: 3.3V @ 3A, 6 ~ 20V in

Summary

The LMZ23605/03, LMZ22005/03 evaluation boards are designed to be an easy-to-use platform to evaluate the full capabilities of this family of SIMPLE SWITCHER® power modules. The PCB construction has excellent thermal performance and includes extra locations for optional components that may not be required in the end application.

The LMZ23605/03 can accept an input voltage rail between 6V and 36V and the LMZ22005/03 can accept an input voltage rail between 6V and 20V. The devices can deliver an adjustable and highly accurate output voltage as low as 0.8V and as high as 6V. The control architecture is constant frequency PWM with emulated current mode sensing. The control loop operates well with low ESR output capacitors such as ceramics or specialty polymer.

The precision enable input allows for programmable UVLO on the input supply or flexibility in sequencing. The external soft-start capacitor facilitates controlled output rise time at startup. The module family is a reliable and robust solution with cycle-by-cycle valley current limit to protect for over current or short-circuit faults. Additionally there is thermal shutdown protection, and they will start up into a pre-biased output. The free-running switching frequency is 812 kHz (typ) and a 650 kHz to 950 kHz synchronization range is supported.


Specifications

Manufacturer Texas Instruments
Category AC/DC and DC/DC Conversion
Sub-Category DC/DC SMPS - Single Output
Eval Board Part Number 296-49785-ND
Eval Board Supplier Texas Instruments
Eval Board Normally In Stock
Topology Step Down
Outputs and Type 1 Non-Isolated
Voltage Out: Factory Set 3.3 V
Current Out 3 A
Voltage In 6 ~ 20 V
Efficiency @ Conditions >87%, 9V in, 3.3V @ 0.5 ~ 3 A
>85%, 12V in, 3.3V @ 0.6 ~ 3 A
>80%, 20V in, 3.3V @ 1~ 3 A
Voltage Out Range 0.8 ~ 6 V
Features Internal Inductor
Short Circuit Protection
Shutdown, Enable, Standby
Soft Start
Synchronizable
Thermal Protection
Under Voltage Protection, Brown-Out
Voltage Tracking
Switching Frequency 812 kHz
Standby Current [Typical] 70 µA
Quiescent Current [Typical] 2.6 mA
Component Count + Extras 19 + 10
Internal Switch Yes
Design Author Texas Instruments
Application / Target Market FPGA / DSP / Processors
Point of Load (PoL)
Standby Current [Maximum] - Not Given
Quiescent Current [Maximum] - Not Given
Main I.C. Base Part LMZ22003
Date Created By Author 2011-03
Date Added To Library 2012-03

Eval Board

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Support Documents & Media

PTM - LMZ Power Modules LMZ23605/03, LMZ22005/03 Eval Board - User Guide LMZ22003 - Datasheet Ultra Librarian Software:CAD Symbols and Footprints (Zip File) TI's CAD/CAE Symbols and Footprint Search PTM - SIMPLE SWITCHER Power Modules

Media

LMZ23605_03_or_LMZ22005_03_Simplified_Schematic_Full.PNG LMZ23605_03_or_LMZ22005_03_Total_Schematic_Full.PNG LMZ22003EVAL_Board_Full.JPG LMZ22003_Chart_1_Full.PNG