MPQ18913

30V, 0.3A High Frequency Transformer Driver

for Automotive, AEC-Q100

PRELIMINARY SPECIFICATIONS SUBJECT TO CHANGE

MPQ18913 Rev. 0.8

MonolithicPower.com

1

12/8/2021

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

Preliminary Specifications Subject to Change

© 2021 MPS. All Rights Reserved.

DESCRIPTION

The MPQ18913 is a high frequency half bridge

transformer driver, which is the ideal solution for

the primary side switcher used in isolated power

supplies. It supports a wide input voltage range

of 5V-30V, and integrates two switching FETs

which take up to 300 mA average input current.

The device features wide adjustable switching

frequency range, which is particularly useful in

resonant topologies such as LLC converter. It

also comes with input OVP, OCP, and fault

indicator. Soft start up is built in to control the

inrush current.

The

MPQ18913

is

available

in

QFN-10

(2mmx2.5mm) package with wettable flank.

FEATURES

 Half Bridge Transformer Driver for Isolated

LLC Resonant Converter

 Adjustable Switching Frequency Range up

to 5 MHz

 Supports up to 6W

 QFN-10 (2mmx2.5mm) package with

wettable flank

 Available in AEC-Q100 Grade

APPLICATIONS

 Isolated Power Supply

 High Frequency DC-DC Converter

 General Purpose Transformer Driver

All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive.

For MPS green status, please visit the MPS website under Quality Assurance.

“MPS”, the MPS logo, and “Simple, Easy Solutions” are trademarks of

Monolithic Power Systems, Inc. or its subsidiaries.

TYPICAL APPLICATION

TX1

C2

+20V

C3

C5

2.2

μF

R2

D3

C4

2.2

μF

4.7

μF

4.7

μF

-4V

FLT

VCC

VI N

24V

NC

SW

EN/

SYNC

BST

GND

C1

4.7

μF

Cr

C6

C7

FREQ

R1

D1

D2

0.47

μF

2.2

μF

Lr

4.7k

Lm