TPS65573 Datasheet, PDF (1/13 Pages) Texas Instruments – INTEGRATED PHOTO FLASH CHARGER AND IGBT DRIVER

TPS65573
www.ti.com................................................................................................................................................................................................... SLVS868 – MARCH 2009
INTEGRATED PHOTO FLASH CHARGER AND IGBT DRIVER
FEATURES
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•2 Wide Input Voltage
– VBAT = 1.4 V to 12 V
– VCC = 2.5 V to 5.5 V
• Integrated 50-V Power Switch With Lower R_ON
• Programmable Peak Current at Primary Side
From 0.5 A to 1.5 A
• Optimized Switch ON/OFF Control for Fast
Charging
• Charge Complete Detection at Primary Side
With High Accuracy
• Integrated IGBT Driver
• 2-mm × 3-mm, 12-Pin WSON Package
• Protection
– Overcurrent Protection (OCP)
– Thermal Shutdown (TSD)
APPLICATIONS
• Digital Still Cameras
• Optical Film Cameras
• Digital Video Camcorders
• Cell Phones
DESCRIPTION/ORDERING INFORMATION
The TPS65573 offers a complete solution for a
charging photo flash capacitor and flashing xenon
tube with insulated gate bipolar transfer (IGBT) driver.
This device has an integrated voltage reference,
power (SW), comparators for peak current
detection/power SW turnon detection/charge
complete detection, IGBT driver and control logics for
charging applications/driving IGBT applications.
Compared with discrete solutions, this device reduces
the component count, shrinks the total solution size,
and erases the difficulty of design for xenon tube
application.
Additional advantages are a fast charging time and
high efficiency since this device has an optimized
pulse width modulation (PWM) control algorithm for
photo flash charging. Also this device has high
accuracy for peak current detection and for charge
completion detection. The distribution of charging
time is smaller.
Other provisions of the device include sensing the
output voltage at the primary side, programmable
peak current at the primary side, protection features
(thermal shutdown and overcurrent), an output pin for
charge completion detection, input pins for charge
enable, flash acceptable, and flash on.
Figure 1. Application Circuit
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPAD is a trademark of Texas Instruments.
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2009, Texas Instruments Incorporated