NCP3012 查看數據表（PDF） - ON Semiconductor

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NCP3012

Synchronous PWM Controller

ON Semiconductor 

NCP3012

FB

Vref = 0.8 V

Soft Start Complete

V2 = Vref * 125%

V4 = Vref * 110%

V5 = Vref * 90%

V7= Vref * 75%

Comparator 1

Comparator 2

LOGIC

Comparator 3

Comparator 4

Power Good

Restart

Latch off

Figure 23. OOV, OUV, and Power Good Circuit Diagram

Trip Level Tolerance 2%

Hysteresis = 5 mV

Trip Level Tolerance 2%

Hysteresis = 5 mV

Trip Level Tolerance 2%

Hysteresis = 5 mV

Trip Level Tolerance 2%

Hysteresis = 5 mV

OOVP & Power Good = 0

Power Good = 0

Power Good = 1

Power Good = 1

Power Good = 0

OUVP & Power Good = 0

Voov = Vref * 125%

Power Not good High

Vtrip_pg = Vref * 110%

Vref = 0.8 V

Vtrip_pg = Vref * 90%

Power Not Good Low

Vouv = Vref * 75%

Figure 24. OOV, OUV, and Power Good Window Diagram

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