Datenblatt-Suchmaschine für elektronische Bauteile |
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TS19705CX6RFG Datenblatt(PDF) 4 Page - Taiwan Semiconductor Company, Ltd |
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TS19705CX6RFG Datenblatt(HTML) 4 Page - Taiwan Semiconductor Company, Ltd |
4 / 7 page TS19705 Single-Stage PFC Primary-Side-Regulation LED Driver 4/7 Version: B14 Application Information Function Description The TS19705 is a constant current Fly-back controller with primary side control and PFC function for LED lighting applications. The controller is Boundary Conduction Mode (BCM) operation with constant on time based regulator design to achieve high power factor performance. The TS19705 has built-in VCC over voltage protection, open LED protection, short LED protection, over temperature protection, primary side current limit and gate clamp functions. The average output current can be expressed as below. Where : I O_avg is the average output current N P is the primary-side turn ratio N S is the secondary-side turn ratio R S is the sensing resistor connected between the MOSFET source and the GND Pin Detail Compensation This is the output of the gm amplifier. Connect with a suitable RC network to ground. Ground GND is the reference node of internal circuit. Current Sense MOSFET current signal sensing for multiplication and current limit setting function. Where : ICS is the input current sence RS is the sensing resistor connected between the MOSFET source and GND Output Gate drive for external MOSFET switch and is built-in gate clamp function. VCC Power supply for the controller during normal operation. The controller will start up when VCC reaches 18V (typical) and will shut-down when VCC voltage is below 9.5V (typical). A decoupling capacitor should be connected between the VCC and GND pin as close as possible. The TS19705 performs VCC over voltage protection though VCC pin. Once VCC pin exceeds in 32V, TS19705 turns off and latchs out the MOSFET switcher until VCC goes below VCC_OFF. |
Ähnliche Teilenummer - TS19705CX6RFG |
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Ähnliche Beschreibung - TS19705CX6RFG |
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