L6599D

The L6599D is a Double-ended Controller for the resonant half-bridge topology. It provides 50% complementary duty cycle, 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 one 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.

• High-accuracy oscillator
• Up to 500kHz operating frequency
• Frequency-shift and latched shutdown 2-level OCP
• Interface with PFC controller
• Latched disable input
• Burst-mode operation at light load
• Non-linear soft-start for monotonic output voltage rise

Applications

Consumer Electronics, Power Management

Warnings

ESD sensitive device, take proper precaution while handling the device. Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.