International Rectifier's Compact, Robust High-Voltage ICs Simplify HID Ballast Circuits and Extend Lamp Life
International Rectifier, IR® (NYSE: IRF), a world leader in power management technology, has introduced the IRS2453D family of integrated 600V self-oscillating full-bridge driver ICs for HID ballast applications including general lighting, outdoor street lighting and projectors.
The new ICs utilize IR’s proprietary high-voltage integrated circuit (HVIC) technology, integrating two high-side and two low-side gate drivers. This process allows improvements in device capabilities, tighter specifications, temperature stability and the integration of previously unavailable features.
The IRS2453D features a simple RC network to program the oscillator, eliminating the need to synchronize two half-bridge drivers. In contrast, solutions using 2 SO-8 driver ICs require a separate oscillator to drive each half-bridge, resulting in unsymmetrical voltages across the load due to mismatching of the on-time states caused by tolerances and temperature. In lighting applications, this can cause mercury migration shortening lamp life.
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