The IRS2573DS is a self-oscillating half-bridge driver IC designed for various lighting and power conversion applications. This device integrates a high-voltage half-bridge gate driver with a resonant control oscillator, offering a compact and efficient solution for driving power MOSFETs in half-bridge configurations.

Applications

• Electronic ballasts for fluorescent lamps: Specifically tailored for driving the MOSFETs in electronic ballast circuits.
• Compact fluorescent lamp (CFL) ballasts: Used in CFL lighting applications to regulate the power to the lamp.
• LED lighting drivers: Can be used in LED driver circuits to control the current and voltage to LEDs.
• Offline power supplies: Suitable for driving half-bridge converters in AC-DC power supplies.
• DC-DC converters: Can be used in DC-DC converters requiring a half-bridge topology.

Features

• Integrated high-voltage half-bridge gate driver: Simplifies design and reduces component count.
• Self-oscillating resonant control: Provides automatic frequency adjustment for optimal efficiency.
• Programmable preheat and ignition time: Allows for customized ballast operation.
• Over-current protection: Protects the IC and external components from damage due to over-current conditions.
• Shutdown function: Enables external control of the driver's operation.
• Internal bootstrap MOSFET: Eliminates the need for an external bootstrap diode.
• Frequency control via external resistor: Allows precise frequency adjustment for optimized performance.

Benefits

• High efficiency: Resonant control minimizes switching losses and improves overall efficiency.
• Compact design: Integrated features reduce component count and board space.
• Reliable operation: Over-current protection and other safety features ensure reliable performance.
• Simplified design: Self-oscillating operation simplifies design and reduces development time.
• Adjustable performance: Programmable preheat and ignition time allows for customized performance.

Additional Details

The IRS2573DS operates at a frequency range of 20 kHz to 200 kHz, depending on external components. It offers a maximum supply voltage of 600V and a typical gate drive voltage of 15V. The device is available in an 8-pin DIP or SOIC package.