Overview
The L6599D, produced by STMicroelectronics, is a high-voltage resonant controller specifically designed for 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. Output voltage regulation is achieved by modulating the operating frequency, and a fixed deadtime ensures soft-switching and high-frequency operation. The L6599D is particularly useful in applications requiring high efficiency and reliability, such as in power supply systems for various electronic devices.
Key Specifications
| Attribute | Value |
|---|---|
| Supply Current-Max | 5 mA |
| Supply Voltage | 8.85 - 16 V |
| Frequency-Max | 500 kHz |
| Duty Cycle-Min | 48% |
| Duty Cycle-Max | 52% |
| Operating Temp Range | -40°C to +150°C |
| Package Style | SOIC-16N |
| Mounting Method | Surface Mount |
Key Features
- 50% duty cycle, variable frequency control of resonant half-bridge
- High-accuracy oscillator
- Up to 500 kHz operating frequency
- Two-level 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
- DIP-16, SO-16N packages
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 L6599D?
The L6599D is a high-voltage resonant controller designed for resonant half-bridge topology, providing a 50% complementary duty cycle and variable frequency control.
- What is the maximum operating frequency of the L6599D?
The maximum operating frequency of the L6599D is up to 500 kHz.
- What type of protection does the L6599D offer?
The L6599D offers two-level overcurrent protection (OCP): frequency-shift and latched shutdown, as well as an additional latched disable input for OTP and/or OVP.
- What are the package options for the L6599D?
The L6599D is available in DIP-16 and SO-16N packages.
- What is the operating temperature range of the L6599D?
The operating temperature range of the L6599D is -40°C to +150°C.
- Does the L6599D support burst-mode operation?
Yes, the L6599D supports burst-mode operation at light load to minimize input consumption.
- How does the L6599D handle power sequencing or brownout protection?
The L6599D includes a not-latched active-low disable input with current hysteresis for power sequencing or brownout protection.
- Can the L6599D interface with a PFC controller?
Yes, the L6599D provides an interface with the PFC controller to enable switching off the pre-regulator during fault conditions or burst-mode operation.
- What is the supply voltage range for the L6599D?
The supply voltage range for the L6599D is 8.85 - 16 V.
- Does the L6599D have high-side gate drivers with integrated bootstrap diodes?
Yes, the L6599D features 600 V-rail compatible high-side gate drivers with integrated bootstrap diodes and high dV/dt immunity.
