Overview
The L6599N, produced by STMicroelectronics, is a high-voltage resonant controller specifically designed for the resonant half-bridge topology. This controller provides a 50% complementary duty cycle, where the high-side and low-side switches are driven ON/OFF 180° out-of-phase for exactly the same time. It is optimized for applications requiring high-frequency operation and soft-switching, achieved through a fixed deadtime between switch transitions. The L6599N is available in DIP-16 and SO-16N packages, making it versatile for various design needs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Frequency | Up to 500 kHz | |
| Supply Voltage (VCC) | 8.85 to 16 V | V |
| Turn-ON Threshold (VCC) | 10 to 11.4 V | V |
| Turn-OFF Threshold (VCC) | 7.45 to 8.85 V | V |
| High-Side Gate Driver Current | -300/800 mA | mA |
| Low-Side Gate Driver Current | -300/800 mA | mA |
| High-Voltage Rail Compatibility | Up to 600 V | V |
| Package Types | DIP-16, SO-16N | |
| Junction Operating Temperature | -40 to 150 °C | °C |
Key Features
- 50% duty cycle, variable frequency control of resonant half-bridge
- High-accuracy oscillator
- Up to 500 kHz operating frequency
- 600 V-rail compatible high-side gate driver with integrated bootstrap diode and high dV/dt immunity
- Non-linear soft-start for monotonic output voltage rise
- Burst-mode operation at light load
- Latched disable input
- Two-level OCP: frequency-shift and latched shutdown
- Interface with PFC controller
- Input for power-ON/OFF sequencing or brownout protection
Applications
- LCD and PDP TV
- Desktop PC, entry-level server
- Telecom SMPS
- AC-DC adapter, open frame SMPS
Q & A
- What is the primary function of the L6599N?
The L6599N is a high-voltage resonant controller designed for the resonant half-bridge topology, providing a 50% complementary duty cycle. - What are the available package types for the L6599N?
The L6599N is available in DIP-16 and SO-16N packages. - What is the maximum operating frequency of the L6599N?
The L6599N can operate up to 500 kHz. - What is the voltage range for the high-side gate driver?
The high-side gate driver is compatible with up to 600 V. - Does the L6599N support burst-mode operation?
Yes, the L6599N supports burst-mode operation at light load. - What types of overcurrent protection (OCP) does the L6599N offer?
The L6599N offers two-level OCP: frequency-shift and latched shutdown. - Can the L6599N interface with a PFC controller?
Yes, the L6599N has an interface with the PFC controller. - What are some common applications for the L6599N?
Common applications include LCD and PDP TV, desktop PC, entry-level server, telecom SMPS, and AC-DC adapters. - How does the L6599N handle power sequencing or brownout protection?
The L6599N has an input for power-ON/OFF sequencing or brownout protection. - What is the purpose of the latched disable input (DIS) on the L6599N?
The latched disable input (DIS) allows for easy implementation of OTP and/or OVP.
