L6599 DATASHEET PDF
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Bias the pin between 1. The bootstrap capacitor connected between this pin and pin 14 OUT is fed by an internal synchronous bootstrap diode driven in-phase with the low-side gate-drive.
L Datasheet pdf – High-voltage resonant controller – ST Microelectronics
The input section is provided withLa double ended primary controller for resonant half-bridge ZVS zero voltage switching. Oscillator’s internal block diagram. The driver is capable of 0. High-side gate-drive floating ground. Soft-start and delayed shutdown upon overcurrent timing diagram-Delay C Delay 0.
A higher level OCP latches off the IC if the first-level protection is not sufficient to control the primary current.
L 데이터시트(PDF) – STMicroelectronics
ESD immunity for pins 14, 15 and 16 is guaranteed up dataheet V 4. The IC can be forced to enter a controlled burst-mode operation at light load, so as to keep converter’s input consumption to a minimum. This pin, normally open, is intended for stopping the PFC controller, for protection purpose or during burst-mode operation. Schematic diagram Schematic diagram Figure 1. A voltage below 1. Sometimes a small datsaheet capacitor 0.
As the voltage on the pin exceeds 3.
High-voltage Resonant Controller
Activating the zener causes the IC to shut down not latched. If the datasehet keeps on building up despite this frequency increase, a second comparator referenced at 1.
IC’s functions include a not-latched active-low disable input with current l699 useful for power sequencing or for brownout protection, a current sense input for OCP with frequency shift and delayed shutdown with automatic restart. In this way, under short circuit conditions, the converter will work intermittently with very low input average power. Block Diagram and Schematic.
The board provides one. Supply Voltage of both the signal part of the IC and the low-side gate driver.
Oscillator’s internal block diagram Linformation L Figure The information is latched and it is necessary to recycle the supply voltage of the IC to enable it to restart: The pin senses some voltage related to the feedback control, which is compared to an internal reference 1. High-side gate-drive floating supply Voltage.
(PDF) L6599 Datasheet download
Layout carefully the connection of this pin to avoid too large spikes below ground. LA datasheet, STMicroelectronics 3.
Try Findchips PRO for schematic diagram l Current return for both the low-side gate-drive current and the bias current of the IC. Internally the pin connects a comparator that, when the voltage on the pin exceeds 1.
To close the feedback loop that regulates the converter output voltage by modulating the oscillator frequency, the phototransistor of an optocoupler will be connected to this pin through a resistor. The pin senses the primary current though a sense resistor or a capacitive divider for lossless sensing.
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. High-side floating gate-drive output. In fact it incorporates thevariations. Every time the voltage on the ISEN pin exceeds 0. The value of this resistor will set the maximum operating frequency.
The region on the left-hand side of the diagram in Figure 5, i.