Κωδικός: ICE 1QS01G

ICE1QS01G 1QS01G PFC CONTROLLER IC INFINEON SO-8

Controller for Switch Mode Power Supplies Supporting Low Power Standby and Power Factor Correction (PFC)

FEATURES

·          Line Current Consumption with PFC

·          Standby Input Power < 1 W

·          Stable Standby Frequency

·          Low Power Consumption

·          Very Low Start-up Current

·          Soft-Start for noiseless Start-up

·          Standby Burst Mode with and without Control Signal for lowered Output Voltages

·          Digital Frequency Reduction in small Steps at Decreasing Load

·          Over- and Under-voltage Lockout

·          Switch Off at Mains Under-voltage

·          Mains Voltage Dependent Fold Back Point Correction

·          Ringing Suppression Time Controlled from Output Voltage

·          Easy Design In

·          Free usable Fault Comparator Functional

DESCRIPTION

 

The ICE1QS01 is optimized to control free running flyback converters with and without Power Factor Correction (with PFC Charge Pump). The switching frequency is reduced in small steps with decreasing load towards a minimum of 20 kHz in standby mode. This function is performed by a digital circuit to avoid any jitter also with periodically pulsed loads. To provide extremely low power consumption at light loads, this device can be switched into Standby Burst Mode. This is also possible without standby control signal (for adapter application). Additionally, the start-up current is very low. To avoid switching stresses of the power devices, the power transistor is always switched on at minimum voltage. The device has several protection functions: VCC over and under-voltage, mains under-voltage and current limiting. Regulation can be done by using the internal error amplifier or an optocoupler feedback. The output driver is ideally suited for driving a power MOSFET. The ICE1QS01 is suited for TV-sets, VCR- sets, SAT- receivers and other consumer applications in the power range from 0 to app. 300 W.

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