STMicroelectronics L6599AD

L6599 H-Bridge Controller Basics
The L6599 is a resonant half-bridge topology-specific double-ended controller. The high-side and low-side switches are pushed ON 180° out-of-phase for the same amount of time, resulting in a 50 percent complementary duty cycle. The operating frequency is modulated to achieve output voltage control. Soft-switching is ensured by a defined deadtime inserted between the turn-off of one switch and the turn-on of the other, allowing for high-frequency operation.

L6599 H-Bridge Controller Features
Burst-mode operation at light load 600V-rail compatible high-side gate driver with integrated bootstrap diode and high dV/dt immunity 50% duty cycle, variable frequency control of resonant half-bridge Integrated high-accuracy oscillator Latched disable input Up to 500kHz operating frequency Interface with PFC controller Two-level OCP: frequency-shift and latched shutdown Non-linear soft-start for monotonic output voltage rise DIP-16, SO-16N packages Input for power-ON/OFF sequencing or brownout protection -300/800mA high-side and low-side gate drivers with UVLO pull-down

L6599 H-Bridge Controller Applications
LCD & PDP TV Desktop PC Entry-level server Telecom SMPS AC-DC adapter Open frame SMPS