APR34309C

Document number: DS37492 Rev. 5 - 2

8 of 13

www.diodes.com

June 2015

© Diodes Incorporated

APR34309C

A Product Line of

Diodes Incorporated

Output Voltage Detect Function Description

VDET

ON

UVLO

Figure 1. Typical Waveforms of APR34309C

OVP discharge current is asserted, the periodical pulse at VDET pin will be disabled.

Operation Description

MOSFET Driver

The operation of the SR is described with timing diagram shown in Figure 2. APR34309C monitors the MOSFET drain-source voltage. When the

MOSFET will turn on and the cur

rent will transfer from the body diode into the MOSFET’s channel.

In the process of drain current decreasing linearly toward zero, the drain-source voltage rises synchronically. When it rises over the turn off

I,V

t

t

0

0

Figure 2. Typical Waveforms of APR34309C