EVLMG1-250WLLC: 24V @ 10.4A, 360 ~ 440VDC In

Summary

This demonstration board is a resonant LLC converter dedicated to any kind of industrial application where minimum size and high efficiency is required, based on MasterGaN1. This device, embedding a couple of GaN power transistors and a driver in the same package, allows to interface directly any kind of SMPS controller. Thanks to the GaN technology and to embedded driver, the converter can be designed with an operating frequency higher than using conventional MOSFETs. Actually, the board has no heatsinks on the primary side and has very reduced dimensions; the power density is 20 W/inch^3. The high efficiency and small size make the board suitable also when available space is limited.

Output power can be up to 250 W at 24 Vdc. Converters come with overcurrent, short-circuit and overvoltage protection. The input voltage monitoring allows the startup with correct sequencing of cascade converters, preventing operation with too low input voltage.

The board is composed of a motherboard with the transformer and the primary controller, and two small daughterboards: one at primary side embeds the MasterGaN1, another on secondary side has the SR controller SRK2001 and the MOSFETs.

Specifications

Manufacturer	STMicroelectronics
Category	AC/DC and DC/DC Conversion
Sub-Category	DC/DC SMPS - Single Output
Eval Board Part Number	497-EVLMG1-250WLLC-ND
Eval Board Supplier	STMicroelectronics
Eval Board	Normally In Stock
Topology	Step Down
Outputs and Type	1 Isolated
Voltage Out: Factory Set	24 V
Current Out	10.4 A
Voltage In	360 ~ 440 VDC
Efficiency @ Conditions	>94%, 400V in, 24V @ 45%~100% Load (4.7 ~ 10.4 A)
Voltage Out Range	- Fixed
Features	Over Current Protection Over Voltage Protection Short Circuit Protection Under Voltage Protection, Brown-Out
Switching Frequency	260 kHz
Standby Current [Typical]	- Not Given
Quiescent Current [Typical]	1.2 mA
Component Count + Extras	120 + 8
Internal Switch	No
Design Author	STMicroelectronics
Application / Target Market	Power: Auxiliary Power Supply Power: Industrial Power
Standby Current [Maximum]	- Not Given
Quiescent Current [Maximum]	1.25 mA
Main I.C. Base Part	L6599A MASTERGAN1 SRK2001
Date Created By Author	2021-02
Date Added To Library	2021-10