Infineon IR2156 Ballast Control IC, 14-Pin

The Infineon IR2156 is a sophisticated ballast control integrated circuit designed for high-performance electronic ballast applications. It combines a high-voltage half-bridge gate driver with a programmable oscillator and a detailed state diagram, creating a complete, highly configurable control solution in a single package.

This IC offers exceptional flexibility with a suite of programmable features. Users can set the preheat frequency, preheat time, and run frequency to match specific lamp requirements, optimising performance and longevity. The programmable dead-time and overcurrent protection threshold add further layers of control, enabling precise tuning of the ballast's operational parameters for efficiency and safety.

Advanced Protection & Reliability

Comprehensive protection is integral to the design, safeguarding against common failure modes. This includes protection for failure-to-strike scenarios, filament failures, and incorporates an automatic restart function for robust operation. Additional safeguards include DC bus under-voltage reset, a shutdown pin with hysteresis, and internal protection against latch-up and electrostatic discharge (ESD).

Key operational features include an internal ignition ramp, a micropower startup requiring only 150µA, and an internal 15.6V Zener clamp diode on the Vcc line for voltage regulation. By integrating the ballast controller and half-bridge driver, the IR2156 simplifies circuit design, reduces component count, and enhances overall system reliability, making it an ideal choice for demanding lighting applications.

Specifications Overview

• IC Type: Ballast Controller & Half-Bridge Driver
• Supply Voltage: 10.5V to 16.5V
• Operating Temperature: -25°C to 125°C
• Package: 14-Pin
• Startup Current: 150µA (Micropower)
• Protections: Over-current, under-voltage, failure-to-strike, latch