STEVAL-ILH001V1
250 W electronic ballast demonstration board for metal halide lamps based on the L6562 and ST7LITE39F2
Data Brief
Features
Input voltage: 90 to 265 Vac, 50 - 60 Hz POUT: 250 W Power factor: 0.94 at 230 Vac Full-bridge for output stage working at low frequency to avoid acoustic resonance PFC (power factor correction) implemented using the L6562 PFC controller Total system efficiency up to 94% Current control during warm-up phase Power control during steady state STEVAL-ILH001V1
Description
The STEVAL-ILH001V1 demonstration board implements a two-stage electronic ballast for 250 W, HID (high-intensity discharge) metal halide lamps. The ballast features a boost converter (PFC controller) working in fixed OFF-time, and a fullbridge inverter to drive a lamp using a low frequency square wave. The design of the STEVAL-ILH001V1 takes advantage of STMicroelectronics' very large product portfolio. ST components used in the design include: PFC drivers, an inverter driver microcontroller, auxiliary power supply, voltage reference, logic part, amplifier, comparators, and power devices such as power MOSFETs, IGBTs, and fast diodes.
July 2008
Rev 1
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www.st.com 6
For further information contact your local STMicroelectronics sales office.
Circuit schematic
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Circuit schematic
Figure 1. PFC electrical schematic
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STEVAL-ILH001V1 Figure 2. Full bridge electrical scheme
Circuit schematic
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Circuit schematic Figure 3. Electrical schematic
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Revision history
2
Revision history
Table 1.
Date 05-Jun-2008
Document revision history
Revision 1 Initial release. Changes
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