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

Summary

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.

Specifications

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
Output Voltage: 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, 10 V @ 3.0 ~ 10 A >94%, 36 Vin, 10 V @ 4.0 ~ 10 A >92%, 48 Vin, 10V @ 4.0 ~ 10 A >88%, 60 Vin, 10 V @ 3.0 ~ 7 A
Voltage Out Range	5.2 V max
Features	Current Limit (Adj. or Fixed) Over Voltage Protection PFM or PWM 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	Auxiliary Power Supply
Main I.C. Base Part	LM5113
Standby Current [Maximum]
Quiescent Current [Maximum]	100 µA
Date Created By Author	2011-06
Date Added To Library	2013-04