FSDM311 Fairchild Semiconductor, FSDM311 Datasheet - Page 10

• Manufacturer Part Number: FSDM311
• Description: IC SWIT PWM GREEN OVP HV 8DIP
• Manufacturer: Fairchild Semiconductor

Specifications of FSDM311

• Output Isolation: Isolated
• Frequency Range: 61 ~ 73kHz
• Voltage - Input: 7 ~ 20 V
• Voltage - Output: 650V
• Power (watts): 13W
• Operating Temperature: 25°C ~ 150°C
• Package / Case: 8-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: FSDM311_NL; FSDM311_NL

© 2003 Fairchild Semiconductor Corporation
FSDM311 Rev. 1.1.0 • 7/14/06
6. Burst Operation: To minimize the power dissipation
in standby mode, the FSDM311 enters burst--mode
operation. As the load decreases, the feedback voltage
decreases. The device automatically enters burst mode
when the feedback voltage drops below V
this point, switching stops and the output voltages start
to drop. This causes the feedback voltage to rise. Once
it passes V
feedback voltage falls and the process repeats. Burst-
mode operation alternately enables and disables
switching of the power MOSFET to reduce the switching
loss in the standby mode.
Figure 22. Burst Operation Function
Figure 21. Burst Operation Block
BURH
(0.70V), switching starts again. The
BURL
(0.55V). At
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