L6599ATD

STMICROELECTRONICS  L6599ATD  芯片, 谐振控制器, NSOIC-16

The is a double-ended improved high voltage Resonant Controller specific to series-resonant half bridge topology. It provides 50% complementary duty cycle: the high-side switch and the low-side switch are driven ON/OFF 180° out-of-phase for exactly the same time. Output voltage regulation is obtained by modulating the operating frequency. A fixed dead-time inserted between the turn-OFF of one switch and the turn-ON of the other guarantees soft-switching and enables high-frequency operation. To drive the high-side switch with the bootstrap approach, the IC incorporates a high voltage floating structure able to withstand more than 600V with a synchronous-driven high voltage DMOS that replaces the external fast-recovery bootstrap diode. The IC enables the designer to set the operating frequency range of the converter by means of an externally programmable oscillator.

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50% Duty cycle, variable frequency control of resonant half bridge

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High accuracy oscillator

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Up to 500kHz Operating frequency

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Two-level OCP - Frequency-shift and latched shutdown

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Interface with PFC controller

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Latched disable input

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Burst mode operation at light load

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Input for power-ON/OFF sequencing or brownout protection

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Non-linear soft-start for monotonic output voltage rise

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600V - Rail compatible high-side gate driver with integrated bootstrap diode and high dv/dt immunity

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-300/700mA high-side and low-side gate drivers with UVLO pull-down

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Guaranteed for extreme temperature ranges