TPS65562
www.ti.com
SLVS775–JUNE 2007
INTEGRATED PHOTO FLASH CHARGER AND IGBT DRIVER
FEATURES
APPLICATIONS
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Digital Still Cameras
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High Integrated Solution to Reduce
Components
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Optical Film Cameras
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Integrated Voltage Reference
Integrated 50-V Power Switch
DESCRIPTION/ORDERING
INFORMATION
Integrated Insulated Gated BiPolar Transistor
(IGBT) Driver
This device offers a complete solution for charging
photo flash capacitor from battery input, and
subsequently discharging the capacitor to a xenon
flash tube. This device has an integrated voltage
reference, power switch, IGBT driver, and control
logic blocks for charging applications and driving
IGBT application. Compared with discreet solutions,
this device reduces the component count, shrinks the
solution size, and eases designs for xenon tube
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High Efficiency
Programmable Peak Current, 0.9 A ~ 1.8 A
Input Voltage of 1.6 V to 12 V
Optimized Control Loop for Fast Charge Time
Isolate IGBT VCC from VCC
Output Voltage Feedback From Primary Side
16-pin QFN Package
application. Additional advantages are
charging time and high efficiency from an optimized
pulse width modulation (PWM) control algorithm.
a
fast
Protection
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–
–
MAX On Time
MAX Off Time
Other provisions of the device includes sensing the
output voltage from the primary side, programmable
peak current, thermal shutdown, an output pin for
charge completion, and input pins for charge enable
and flash enable.
Over Current Shutdown to Monitor VDS at
SW Pin (OVDS)
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Thermal Disable
D1
C1
VA
VOUT
T1
VCC
VCC
IGBT_VCC
IGBT_VCC
SW
VBAT
V
I/F
V
I/F
CHG
DQ
F1
Controller
R1
XFULL
or
OV
DS
DQ
F2
ENA
VCC
U1
ENA
U0
V_FULL
D/A Conv.
or
U2
MAX ON
LOGIC
TSD
I_PEAK
PGND
I_PEAK
ref
Analog
Circuit
SW
Vref
U3
IGBT_VCC
U4
G_IGBT
SW1
F_ON
or
ENA
IGBT
(NC)
Figure 1. Typical Application Circuit
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.
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 © 2007, Texas Instruments Incorporated