Overview
The L6599AD is an improved high-voltage resonant controller developed by STMicroelectronics. It is designed for high-efficiency power conversion and is specifically tailored for series-resonant half bridge topology. This controller offers enhanced performance compared to its predecessor, the L6599, with features such as soft-switching, high-frequency operation, and comprehensive protection mechanisms. The L6599AD is suitable for a wide range of applications where high efficiency and reliability are critical.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Style | SOIC-16N, DIP-16 | |
| Mounting Method | Surface Mount | |
| Operating Frequency | Up to 500 kHz | |
| Duty Cycle | 50% complementary duty cycle | |
| High-Side Gate Driver | 600 V-rail compatible with integrated bootstrap diode and high dv/dt immunity | |
| Gate Driver Current | -300/800 mA high-side and low-side gate drivers with UVLO pull-down | |
| IC Supply Voltage | 8.85 to 16 V | V |
| Junction Temperature Range | -40 to 150 °C | °C |
| Storage Temperature Range | -55 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
- Two-level Overcurrent Protection (OCP): frequency-shift and latched shutdown
- Interface with PFC controller
- Latched disable input
- Burst mode operation at light load
- Input for power-ON/OFF sequencing or brownout protection
- Non-linear soft-start for monotonic output voltage rise
- 600 V-rail compatible high-side gate driver with integrated bootstrap diode and high dv/dt immunity
- -300/800 mA high-side and low-side gate drivers with UVLO pull-down
- Digital control and monitoring capabilities
- Soft-start and transient response capabilities
- High-reliability and fault-tolerant operation
Applications
- LCD and PDP TV
- Desktop PC, entry-level server
- Telecom SMPS
- High efficiency industrial SMPS
- AC-DC adapter, open frame SMPS
- Semiconductor manufacturing equipment
- Power supplies and converters
- Aerospace and defense systems
- Industrial automation systems
Q & A
- What is the L6599AD used for?
The L6599AD is a high-voltage resonant controller used for high-efficiency power conversion in series-resonant half bridge topology.
- What is the operating frequency range of the L6599AD?
The L6599AD operates at frequencies up to 500 kHz.
- What type of duty cycle does the L6599AD support?
The L6599AD supports a 50% complementary duty cycle.
- What protection mechanisms does the L6599AD offer?
The L6599AD offers two-level Overcurrent Protection (OCP): frequency-shift and latched shutdown, as well as an interface with PFC controllers and latched disable inputs.
- What is the purpose of the soft-start feature in the L6599AD?
The soft-start feature ensures a non-linear, monotonic output voltage rise during startup, preventing uncontrolled inrush current.
- What are the typical applications of the L6599AD?
The L6599AD is used in LCD and PDP TVs, desktop PCs, telecom SMPS, industrial SMPS, AC-DC adapters, semiconductor manufacturing equipment, and aerospace and defense systems.
- What is the package style of the L6599AD?
The L6599AD is available in SOIC-16N and DIP-16 packages.
- What is the voltage range for the IC supply of the L6599AD?
The IC supply voltage range for the L6599AD is 8.85 to 16 V.
- Does the L6599AD support burst mode operation?
Yes, the L6599AD supports burst mode operation at light load to minimize input consumption.
- What is the junction temperature range for the L6599AD?
The junction temperature range for the L6599AD is -40 to 150 °C.
