SM72295_15 Datasheet, PDF (1/17 Pages) Texas Instruments – SM72295 Photovoltaic Full Bridge Driver

SM72295
www.ti.com
SNVS688E – OCTOBER 2010 – REVISED APRIL 2013
SM72295 Photovoltaic Full Bridge Driver
Check for Samples: SM72295
FEATURES
1
•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
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.
Typical Application Circuit
R16
+
10m
PV
Vin
-
R11
R13 R14
R15
10m
R10
R12
R9
C1
10k
C5
0.47 uF ^C6
1
uF
C4
C3 ^{0.47 uF}
1
uF
+
Vout
-
5V
10V
R6
500
C10
10n
R5 ^optional
500
C7 R3
40k
R7
500
C8
R8
10 nF ₅₀₀
optional
C2
R4
40k
1
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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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