L6599 is a high-voltage resonant controller produced by ST. It supports 50% duty cycle, variable frequency control of resonant half-bridge, high-accuracy oscillator, up to 500 kHz operating frequency, dual-level OCP, interface with PFC controller, latched disable input, light load burst-mode operation, input for power-ON/OFF sequencing or brownout protection, non-linear soft-start, 600V-rail compatible high-side gate driver with integrated bootstrap diode and high dV/dt immunity, -300/800mA high-side and low-side gate drivers with UVLO pull-down
The L6599 is a double-ended controller designed specifically for the resonant half-bridge topology. It provides a 50% complementary duty cycle with a fixed dead-time to ensure soft-switching and enable high-frequency operation up to 500 kHz. The device incorporates a high-voltage floating structure compatible with 600 V-rails, featuring an integrated synchronous bootstrap diode to replace external components.
| Operating frequency | Up to 500 kHz |
|---|---|
| Rail compatibility | 600 V |
| Duty cycle | 50 % |
| Packages | DIP-16, SO-16N |
It is a double-ended controller specific for the resonant half-bridge topology.
Yes, it supports burst-mode operation at light load to minimize input consumption.