M51995AP

Микросхема M51995AP (M51995)

M51995AP - primary switching regulator controller which is especially designed to get the regulated DC voltage from AC power supply, DIP-16

 

Особенности

• 500 kHz operation to MOS FET
• Output current : ±2 A
• Output rise time 60 ns, fall time 40 ns
• Modified totempole output method with small through current
• Compact and light-weight power supply
• Small start-up current : 90 µA typ.
• Big difference between “start-up voltage” and “stop voltage” makes the smoothing capacitor of the power input section small.
• Start-up threshold 16 V, stop voltage 10 V
• Packages with high power dissipation are used to with-stand the heat generated by the gate-drive current of MOSFET.
• 16-pin DIP, 20-pin SOP 1.5 W (at 25°C)
• Simplified peripheral circuit with protection circuit and built-in large-capacity totempole output
• High-speed current limiting circuit using pulse-by-pulse method (Two system of CLM+pin, CLM−pin)
• Protection by intermittent operation of output over current : Timer protection circuit
• Over-voltage protection circuit with an externally re-settable latch (OVP)
• Protection circuit for output miss action at low supply voltage (UVLO)
• High-performance and highly functional power supply
• Triangular wave oscillator for easy dead time setting

 

Application

• Feed forward regulator, fly-back regulator