SHINDENGEN

ELECTRIC MFG.CO.,LTD

- 4 -

Confidential

1

General description

MCZ5203 is an advanced symmetric LLC current resonant mode controller for bridge converter.

Bulit-in high voltage direct gate drivers, control circuit and optimized protections allow

simplified and space/cost-saving design of power supplies for :

 Large screen flat panel TVs (PDP / LCD ) PSU

 Laser printer PSU

 High power adapters

1.1 Features

1.

Robust 600V gate driver directly drives high side Switch.

2.

Optimized gate drive capability minimizes the number of components for gate drive circuit.

3.

Optimized protective functions (OCP/burst/Timer delayed latch/Thermal) for LLC converter

4.

Advanced ZVS boundary chaser (capacitive mode protection) eliminates below resonant

(capacitive di/dt) operation.

5.

OCP operates by detecting peak primary current with 0.345V / threshold.

6.

Vcc supplies up to 35V with 13.5V/8.4V UVLO

7.

Built-in voltage regulator of 10V for gate driver

8.

Independent high side / low side Gate driver UVLO with hysterisis

9.

Adjustable soft starting function

11. Optimized brown out protection

1.2 Block diagram （SOP22）