TPS65552A Xenon Tube Flash Driver

The size of the photoflash charger circuit is greatly simplified and reduced by Texas Instrument (TI) TPS65552A. A photoflash capacitor charger based on this device is shown on the circuit diagram below. All the necessary¬† function such as charging controls, output feedback, charge completion status, insulated gate bipolar transistor (IGBT) driver, and circuit protections needed to implement a small, efficient photoflash charger are provided by TPS65552A. Here’s the circuit diagram:

TPS65552A Xenon Tube Flash Driver circuit schematic diagram

A burst of high-intensity light is provided by Xenon flash tubes. This light is essential for photography of objects at a distance, moving at high speeds, or in low-light conditions. Xenon gas-discharge generate the light spectrum closely replicates that of the sun. This light spectrum is providing very accurate color reproduction.

To flash once a trigger signal is applied, Xenon flash tubes require a high voltages across their electrodes. 300 V is the typical voltage. Photoflash capacitor is kind of a bulk capacitor to store all of the energy needed to flash the lamp. [Source: Texas Instruments Application Note]

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