参数资料
型号: FSDM07652RBWDTU
厂商: Fairchild Semiconductor
文件页数: 13/20页
文件大小: 0K
描述: IC SWIT PWM GREEN CM HV TO220F
标准包装: 400
输出隔离: 隔离
频率范围: 60 ~ 72kHz
输入电压: 8 V ~ 20 V
输出电压: 650V
功率(瓦特): 80W
工作温度: 25°C ~ 150°C
封装/外壳: TO-220-6 全封装,成形引线
供应商设备封装: TO-220F-6L(成形)
包装: 管件
FSDM07652RB
5. Burst operation : In order to minimize power dissipation
in standby mode, the FSDM07652RB enters burst mode
operation. As the load decreases, the feedback voltage
decreases. As shown in Figure 8, the device automatically
enters burst mode when the feedback voltage drops below
V BURL (500mV). At this point switching stops and the
output voltages start to drop at a rate dependent on standby
current load. This causes the feedback voltage to rise. Once
it passes V BURH (700mV) switching resumes. The feedback
voltage then falls and the process repeats. Burst mode
operation alternately enables and disables switching of the
power Sense FET thereby reducing switching loss in
Standby mode.
Vo
Vo set
V FB
0.7V
0.5V
Ids
Vds
time
Switching
Switching
T1
disabled
T2 T3
disabled
T4
Figure 8. Waveforms of burst operation
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