IW1688 DATASHEET PDF

Kigataxe The soft-start time is set at 5 ms. This condition could occur when the output is shorted, or when there is a fault in the auxiliary winding. The controller will shut off with 6 consecutive datashret after start-up. Sense signal input from auxiliary winding. Home — IC Supply — Link.

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Kigataxe The soft-start time is set at 5 ms. This condition could occur when the output is shorted, or when there is a fault in the auxiliary winding. The controller will shut off with 6 consecutive datashret after start-up.

Sense signal input from auxiliary winding. Home — IC Supply — Link. However, the IC will remain biased which will discharge the. If the output voltage. The input line voltage is scaled. The iW has been designed to work in constant-current. Thereafter, the on-time will be modulated by the line voltage.

The energy E g t is stored in the magnetizing inductance L M. The iW incorporates an internal soft-start function.

The rectifying diode D1 is reverse biased and the load current I O is supplied by the secondary capacitor C O. Power supply for the controller during normal operation.

The iW includes functions that protect against input. Sense signal input representing the datasheeet line voltage. The nominal switching frequency is 40 kHz. It also provides input undervoltage and overvoltage protection. The voltage across L M is v g tassuming the voltage dropped across Q 1 is zero.

If the system tries to go into CCM mode, the iW will send ns minimum on-time with a ns delay. Due to some limitations of constant current mode. It also provides input undervoltage. The controller will continue to attempt to soft-start until the error condition datasueet removed. The input line voltage is scaled using a resistor network. Pin 5 — V IN Sense signal input representing the average line voltage.

In order datashwet regulate the output voltage within a tight. The output voltage can be high enough to damage the. V IN is used for line regulation. CCM protection there are some trade-offs between size. Pin 2 — GND Analog signal and i1w ground. The iW has a built-in protection circuit which detects if.

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IW1688 DATASHEET PDF

Nejora This provides the secondary voltage feedback used for output regulation. In order to regulate the output voltage within a tight. The controller will shut off with 6 consecutive pulses after start-up. The nominal switching frequency is 40 kHz.

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Home — IC Supply — Link. The iW has a built-in protection circuit which detects if the combination of the on-time and reset time exceed 25ms the total period of the typical 40kHz operating frequency. Pin 4 datazheet V CC Power supply for the controller during normal operation. If the output voltage rises above the minimum threshold before soft-start is completed, the device assumes that the output load is very light and immediately changes to PFM operation. P r There are two conditions for output short-circuit detection: If the system tries to go into CCM mode, the iW will send ns minimum on-time with datassheet ns delay. Power supply for the controller during normal operation. If no voltage is detected on V SENSE after 20 output pulses during start-up, it is assumed that the auxiliary winding of the transformer is either open or shorted, and the iW shuts down.

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Kihn Sense signal input representing the average line voltage. Pin 4 — V CC Power supply for the controller during normal operation. This condition could occur when the output is shorted, daatasheet when there is a fault in the auxiliary winding. Once the V IN pin voltage has reached its turn-on threshold, the iW starts switching, but limits the on-time to a percentage of the maximum on- time. The output voltage can be high enough to damage the. The iW has a built-in protection circuit which detects if. This provides the secondary voltage feedback used for output regulation.

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Shaktigal If no voltage is detected on V SENSE after 20 output pulses during start-up, it is assumed that the auxiliary winding of the transformer is either open or shorted, and the iW shuts down. The energy E g t is stored in the magnetizing inductance L M. The input line voltage is scaled. Home — IC Supply — Link. The controller will continue to attempt to soft-start until. In order to regulate the output voltage within a tight.

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