Overview
The L6599EDTR, produced by STMicroelectronics, is a high-voltage resonant controller designed specifically 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. Output voltage regulation is achieved by modulating the operating frequency, and a fixed deadtime ensures soft-switching and high-frequency operation. The L6599EDTR is particularly suited for applications requiring high efficiency and reliability in power conversion.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Frequency | Up to 500 kHz | kHz |
| Duty Cycle | 50% | % |
| High-Side Gate Driver Current | -300/800 mA | mA |
| Low-Side Gate Driver Current | -300/800 mA | mA |
| IC Supply Voltage | 8.85 to 16 V | V |
| Floating Supply Voltage (VBOOT) | -1 to 618 V | V |
| Package Types | DIP-16, SO-16N | - |
| Junction Operating 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
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 L6599EDTR?
The L6599EDTR is a high-voltage resonant controller designed for the resonant half-bridge topology, providing a 50% complementary duty cycle and variable frequency control.
- What are the operating frequency and duty cycle of the L6599EDTR?
The operating frequency can go up to 500 kHz, and the duty cycle is 50%.
- What types of packages are available for the L6599EDTR?
The L6599EDTR is available in DIP-16 and SO-16N packages.
- What is the voltage range for the IC supply voltage?
The IC supply voltage ranges from 8.85 V to 16 V.
- What is the maximum voltage for the floating supply voltage (VBOOT)?
The maximum voltage for VBOOT is 618 V.
- Does the L6599EDTR have built-in overcurrent protection?
Yes, it has two-level OCP: frequency-shift and latched shutdown.
- Can the L6599EDTR operate in burst mode?
Yes, it supports burst-mode operation at light load.
- What is the purpose of the soft-start feature in the L6599EDTR?
The non-linear soft-start feature ensures a monotonic output voltage rise.
- What are some common applications for the L6599EDTR?
Common applications include LCD and PDP TVs, desktop PCs, telecom SMPS, and AC-DC adapters.
- Does the L6599EDTR have an interface with PFC controllers?
Yes, it has an interface with PFC controllers to enable switching off the pre-regulator during fault conditions.
- What is the junction operating temperature range for the L6599EDTR?
The junction operating temperature range is from -40 °C to 150 °C.
