AC-DC Secondary-Side Synchronous Rectifier Controller IC.
Supporting PWM/QR control, it dynamically varies the OFF-timing according to the power supply status to maximize the synchronous rectification effect. Immediate turn-off is triggered during abnormal conditions like sudden load changes to prevent reverse current.
Features
High efficiency
Safe control
Less parts
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For PWM/QR converter
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Recommended
operating voltage
Min.
[V]VIN
Max.
[V]Rating
[V]Switching
frequency
Max.
[KHz]8.0 34 200 500
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Product
nameMaximum frequency
[KHz]REG Voltage
Turn On
[V]REG Voltage
Turn Off
[V]VCC Voltage
Turn On
[V]VCC Voltage
Turn Off
[V]MM3878A 500 5.45 5.35 MM3878B 500 4.55 4.4 MM3878C 500 4.55 4.4 MM3878D 500 4.55 4.4 -
Associated Data
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