SM72295
www.ti.com
SNVS688E –OCTOBER 2010–REVISED APRIL 2013
SM72295 Photovoltaic Full Bridge Driver
Check for Samples: SM72295
1
FEATURES
DESCRIPTION
The SM72295 is designed to drive 4 discrete N type
MOSFET’s in a full bridge configuration. The drivers
provide 3A of peak current for fast efficient switching
and integrated high speed bootstrap diodes. Current
sensing is provided by 2 transconductance amplifiers
with externally programmable gain and filtering to
remove ripple current to provide average current
information to the control circuit. The current sense
amplifiers have buffered outputs available to provide
a low impedance interface to an A/D converter if
needed. An externally programmable input over
voltage comparator is also included to shutdown all
outputs. Under voltage lockout with a PGOOD
indicator prevents the drivers from operating if VCC is
too low.
2
•
•
•
•
•
Renewable Energy Grade
Dual Half Bridge MOSFET Drivers
Integrated 100V Bootstrap Diodes
Independent High and Low Driver Logic Inputs
Bootstrap Supply Voltage Range up to 115V
DC
•
Two Current Sense Amplifiers with Externally
Programmable Gain and Buffered Outputs
•
•
Programmable Over Voltage Protection
Supply Rail Under-Voltage Lockouts with
Power Good Indicator
PACKAGE
•
SOIC-28
Typical Application Circuit
R16
10m
R15
10m
+
+
R10
R12
R11
Vout
PV
Vin
C1
R9
10k
R13 R14
-
C4
0.47 uF
-
C5
0.47 uF
C6
1
uF
5V
C3
1
uF
10V
R6
500
R7
500
C8
10 nF
R8
500
C10
10n
optional
optional
R5
500
R3
40k
C7
C2
R4
40k
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2
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.
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