IW1688 DATASHEET PDF

IWST-TR from iWatt, Inc.. Find the PDF Datasheet, Specifications and Distributor Information. IW Datasheet, IW PDF, Low Power Off Line Digital PWM Controller. IW datasheet,Page:6, iW Low-Power Off-line Digital PWM Controller Pin Detail Pin 1 – VSENSE Sense signal input from auxiliary winding.

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Home – IC Supply – Link. The iW incorporates an internal soft-start function.

This pin also provides the supply current to the IC during start-up. If the output voltage rises above the minimum threshold.

Pin 2 — GND Analog signal and power ground. Thereafter, the on-time will be modulated by the line voltage and the off-time is modulated by the load current. The output voltage can be high enough catasheet damage the.

Sense signal input from auxiliary winding. CCM protection there are some trade-offs between size.

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The output voltage can be high enough to damage the output capacitor when the feedback loop is broken. Thereafter, the on-time will be modulated by the line voltage. The input line voltage is scaled.

If the output voltage. In order to regulate the output voltage within a tight. This condition could occur when the output is shorted, or when there is a fault in the auxiliary winding.

However, the IC will remain biased which will discharge the.

IW Datasheet, PDF – Alldatasheet

As the output load. The iW will attempt to restart from any of these fault. Conduction Mode CCMwhich could saturate the.

The iW includes functions that protect against input. If the voltage at these pins exceed their undervoltage datasheer overvoltage thresholds for more than cycles, the iW will stop switching. Power supply for the controller during normal operation. The voltage across L M is v g tassuming the voltage dropped across Q 1 is zero. The input line voltage is scaled using a resistor network.

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The controller will continue to attempt to soft-start until the error condition is removed. Pin 4 — Iw16888 CC Power supply for the controller during normal operation. Sense signal input representing the average line voltage. The soft-start time is set at 5 ms.

This provides the secondary voltage feedback used for output regulation. The iW has a built-in protection circuit which detects if. Due to some limitations of constant current mode.

IW1688 Datasheet

I1688 Q1 turns off, D1 conducts and the stored energy E g t is delivered to the output. The controller will shut off with. It also provides input undervoltage and overvoltage protection. The iW has been designed to work in constant-current.