Overview
The L6598BDTR, manufactured by STMicroelectronics, is a high-voltage resonant controller designed for use in half-bridge configurations. This device is fabricated using BCD™ offline technology, enabling it to handle voltage ratings up to 600 V. It is particularly suited for AC/DC adapters and applications where resonant topologies are beneficial. The L6598BDTR is intended to drive two power MOSFETs in a classical half-bridge topology and features a dedicated timing section for setting soft-start time, soft-start, and minimum frequency. Additionally, it includes an error amplifier and two enable inputs, along with integrated bootstrap diode and Zener clamping on the low voltage supply, minimizing the need for external components.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| High Voltage Rail | Up to 600 V | V |
| dV/dt Immunity | ±50 V/ns | V/ns |
| Driver Current Capability | 250 mA (source), 450 mA (sink) | mA |
| Switching Times | 80/40 ns rise/fall with 1 nF load | ns |
| CMOS Shutdown Input | Available | - |
| Undervoltage Lockout | Available | - |
| Soft-start Frequency Shifting Timing | Available | - |
| Sense Op Amp | For closed loop control or protection features | - |
| High Accuracy Current Controlled Oscillator | Available | - |
| Integrated Bootstrap Diode | Available | - |
| Clamping on Vs | Available | - |
| Package | DIP16, SO16 | - |
| Operating Temperature | -40 to +125 °C | °C |
| Maximum Switching Frequency | 400 kHz | kHz |
Key Features
- High voltage rail up to 600 V
- dV/dt immunity ±50 V/ns in full temperature range
- Driver current capability: 250 mA source, 450 mA sink
- Switching times 80/40 ns rise/fall with 1 nF load
- CMOS shutdown input
- Undervoltage lockout
- Soft-start frequency shifting timing
- Sense op amp for closed loop control or protection features
- High accuracy current controlled oscillator
- Integrated bootstrap diode
- Clamping on Vs
- Available in DIP16 and SO16 packages
Applications
The L6598BDTR is suitable for various applications, including:
- AC/DC adapters
- Resonant converters in power supplies for televisions, monitors, and telecom equipment
- Automotive applications such as car radios
- Industrial power supplies where high efficiency and low electromagnetic interference are required
Q & A
- What is the maximum voltage rating of the L6598BDTR?
The L6598BDTR has a maximum voltage rating of up to 600 V.
- What is the driver current capability of the L6598BDTR?
The device has a driver current capability of 250 mA (source) and 450 mA (sink).
- What are the switching times of the L6598BDTR with a 1 nF load?
The switching times are 80 ns rise and 40 ns fall with a 1 nF load.
- Does the L6598BDTR have integrated bootstrap diode and Zener clamping?
Yes, the L6598BDTR features an integrated bootstrap diode and Zener clamping on the low voltage supply.
- What are the available packages for the L6598BDTR?
The device is available in DIP16 and SO16 packages.
- What is the maximum switching frequency of the L6598BDTR?
The maximum switching frequency is 400 kHz.
- Does the L6598BDTR have soft-start frequency shifting timing?
Yes, the device includes soft-start frequency shifting timing.
- What is the purpose of the sense op amp in the L6598BDTR?
The sense op amp is used for closed loop control or protection features.
- What is the operating temperature range of the L6598BDTR?
The operating temperature range is -40 to +125 °C.
- Does the L6598BDTR have undervoltage lockout and CMOS shutdown input?
Yes, the device includes undervoltage lockout and a CMOS shutdown input.
