LM5113LLPEVB: 10V @ 10A, 15 ~ 60V in


The LM5113 evaluation board is designed to provide the design engineers with a synchronous buck converter to evaluate the LM5113, a 100V half-bridge enhancement mode Gallium Nitride (GaN) FET driver. The active clamping voltage mode controller LM5025 is used to generate the PWM signals of the buck switch and the synchronous switch.

The specifications of the evaluation board are as follows: input operating voltage 15 V to 60 V; output voltage 10 V; output current 10A @ 48V, 7A @ 60V; measured efficiency at 48 V is 93.9% @ 10 A; 800 kHz frequency of operation; and line UVLO is 13.8 V (rising) /10.8 V (falling).

The board size is 3.00 x 2.83 inches, the printed circuit board (PCB) consists of 2 layers of 2 ounce copper on FR4 material, with a thickness of 0.050 inches.

The user’s guide contains the schematic of the evaluation board, Bill of Materials (BOM) and a quick setup procedure. The evaluation board can be reconfigured for different switching frequency, dead time, and the output voltage from the specifications given.


Manufacturer Texas Instruments
Category AC/DC and DC/DC Conversion
Sub-Category DC/DC SMPS - Single Output
Eval Board Part Number LM5113LLPEVB/NOPB-ND
Eval Board Supplier Texas Instruments
Eval Board Normally In Stock
Topology Step Down
Outputs and Type 1 Non-Isolated
Voltage Out: Factory Set 10 V
Current Out 7 A @ 60 Vin
10 A @ 48Vin
Voltage In 15 ~ 60 V
Efficiency @ Conditions >96%, 15V in, 10V @ 2.8 ~ 10 A
>95%, 24V in, 10V @ 3.0 ~ 10 A
>94%, 36V in, 10V @ 4.0 ~ 10 A
>92%, 48V in, 10V @ 4.0 ~ 10 A
>88%, 60V in, 10V @ 3.0 ~ 7 A
Voltage Out Range 5.2 V max
Features Current Limit (Adj. or Fixed)
Over Voltage Protection
Under Voltage Protection, Brown-Out
Switching Frequency 800 kHz
Standby Current [Typical]
Quiescent Current [Typical] 70 µA
Component Count + Extras 57 + 6
Internal Switch No
Design Author Texas Instruments
Application / Target Market Power: Auxiliary Power Supply
Standby Current [Maximum]
Quiescent Current [Maximum] 100 µA
Main I.C. Base Part LMG1205
Date Created By Author 2011-06
Date Added To Library 2013-04

Eval Board

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