Introduction
The HID lamp ballast using Microchip chip MCU. The driver chip directly drives the DC/DC inverse MOS tube, and the full bridge driver IR chip direct load control, simple structure, flexible control, ignition, constant power, protection function.
Function characteristics
◆ Input reverse polarity protection;
◆ Input undervoltage, overvoltage protection, light pressure anomaly;
◆ The enable input voltage 9~17V, when the voltage is less than 8V or beyond 18V goes out, when the voltage is once again restored to 9~17V lights.
◆ The power can not be normal lighting, access protection, no longer need to restart to re lighting, lighting.
◆ during normal operation of the lamp, the lamp tube pressure is too high to cause severe jitter, causing the lights went out, will automatically restart.
◆ The direct control of DC/DC inverter, the circuit is simple, and can better follow the change of load regulation
◆ The main parameters
◆ lamp type 35W vehicle HID
◆ Input voltage 9~17V
◆ starting current (input voltage 13.2V) <5A
◆ Input current (steady state) 3.2 A @13.2V
◆ The efficiency of >80%
◆ DC/DC working frequency of 40 KHz
◆ The full bridge driving frequency of 318 Hz
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