参数资料
型号: NCP1351DPG
厂商: ON Semiconductor
文件页数: 17/27页
文件大小: 0K
描述: IC CTRLR PWM PROG CM OTP 8DIP
标准包装: 50
输出隔离: 隔离
频率范围: 调节
输入电压: 9.5 V ~ 28 V
工作温度: -25°C ~ 125°C
封装/外壳: 8-DIP(0.300",7.62mm)
供应商设备封装: 8-PDIP
包装: 管件
NCP1351
Depending on the design conditions (DCM or CCM), the
error flag assertion will correspond to either 50% of the
maximum power (full load DCM design) or a value above
this number if the converter operates in CCM at full load and
remains in CCM at half the switching frequency.
V cc
The figures below details circuits operation for the various
controller options.
Pulldown
Vcc ON
Latched
SCR action
Vcc stop
I FB
ICC1
fault
state
ICC1
ICC < 20 μ A
V zener
User
FB reacts
ok
reset
ok
40 μ A
V timer
V timer
startup
DRV
A version, latched
Figure 20. The A Version Latches-off in Presence of a Fault
V cc
Vcc ON
Pulses
stopped
Fault
Vcc stop
ICC1
ICC4
still present
ICC1
V zener
I FB
FB reacts
fault
ok
Auto-recovery
40 μ A
V timer
V timer
startup
DRV
B version, auto-recovery
Figure 21. The B Version Enters an Auto-Recovery Burst Mode in Presence of a Fault
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17
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