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An datasehet with the PFC controller is provided that enables to switch off the pre-regulator during fault conditions, such as OCP shutdown and DIS high, or during burst-mode operation.

As the voltage on the pin exceeds 3. The input section is provided withLa double ended primary controller for resonant half-bridge ZVS zero voltage switching.

At start-up, to prevent uncontrolled inrush current, the switching frequency starts from a programmable maximum value and progressively decays until it reaches the steady-state value determined by the control loop.

Schematic diagram Schematic datashedt Figure 1. ESD immunity for pins 14, 15 and 16 is guaranteed up to V 4.

To drive the high-side switch with the bootstrap approach, the IC incorporates a high-voltage floating structure able to withstand more than V with a darasheet high-voltage DMOS that replaces the external fast-recovery bootstrap diode. Bypass the pin with a capacitor to GND to reduce noise pick-up.


Every time the voltage on the ISEN pin exceeds 0. Sometimes a small bypass capacitor 0.

L6599 Datasheet PDF

A higher level OCP latches off the IC if the first-level protection is not sufficient to control the primary current. Ratasheet mA mA Iq Residual consumption ? Try Findchips PRO for schematic diagram l Leave the pin unconnected if not used.

Under output short circuit, this normally results in a nearly constant peak primary current.

L Datasheet pdf – High-voltage resonant controller – ST Microelectronics

Bias the pin between 1. The IC enables the designer to set the operating frequency range of the converter by means of an externally programmable oscillator. Schematic diagram 5 of 9. High-side gate-drive floating ground. Current return for both the low-side gate-drive current and the bias current of the IC. The comparator is provided with current hysteresis: A current generator and is slowly discharged by the external resistor.

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A is kept always on.

L datasheet, Pinout ,application circuits High-voltage Resonant Controller

A fixed deadtime inserted between the turn-OFF of one switch and the turn-ON of the other one guarantees soft-switching and enables high-frequency operation.

Block Diagram and Schematic – – This Document can not be used without Samsung’s authorization – 8. Functions Pin functions Name Function Soft start.

datasgeet High-side floating gate-drive output. L Pin functions continued N. This pin connects an external capacitor to GND and a resistor to RFmin pin 4 that set both the maximum oscillator frequency and the time constant for the frequency shift that occurs as the chip starts up soft-start.

Soft-start is not invoked. A current generator is ON as long as the voltage applied at the pin is below 1.

High-voltage Resonant Controller

The board provides one. The pin senses some voltage related to the feedback control, which is compared to an internal reference 1.

If the current keeps on building up despite this frequency increase, a second comparator referenced at 1.