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SM72295MA 数据表(PDF) 2 Page - Texas Instruments

部件名 SM72295MA
功能描述  SM72295 Photovoltaic Full Bridge Driver
Download  17 Pages
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

SM72295MA 数据表(HTML) 2 Page - Texas Instruments

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SM72295
IOUT
OVP
PGOOD
SOA
SIB
OVS
HSB
HBB
LIA
HIA
LOB
AGND
LIB
HIB
BOUT
SOB
BIN
SIA
HOB
VCCB
VDD
HSA
PGND
HOA
HBA
VCCA
LOA
IIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
15
16
SM72295
SNVS688E – OCTOBER 2010 – REVISED APRIL 2013
www.ti.com
Connection Diagram
Figure 1. Top View
SOIC-28
PIN DESCRIPTIONS
Pin
Name
Description
Application Information
1
SIA
Sense high input for input current
Tie to positive side of the current sense resistor through an external gain
sense transconductance amplifier
programming resistor (RI). Amplifier transconductance is 1/RI.
2
S0A
Sense low input for input current
Tie to negative side of the current sense resistor through an external gain
sense transconductance amplifier
programming resistor. Amplifier transconductance is 1/RI.
3
IIN
Output for current sense
Output of the input current sense amplifier. Requires an external resistor to
transconductance amplifier
ground (RL). Gain is RL/RI, where RI is the external resistor in series with the
SIA pin.
4
BIN
Buffered IIN
Buffered IIN.
5
AGND
Analog ground
Ground return for the analog circuitry. Tie to the ground plane under the IC
6, 9
LIA, LIB
Low side driver control input
The inputs have TTL type thresholds. Unused inputs should be tied to ground
and not left open.
7, 8
HIA, HIB
High side driver control input
The inputs have TTL type thresholds. Unused inputs should be tied to ground
and not left open.
10
PGOOD
Power good indicator output
Open drain output with an internal pull-up resistor to VDD indicating VCC is in
regulation. PGOOD low implies VCC is out of regulation.
11
BOUT
Buffered IOUT
Buffered IOUT.
12
IOUT
Output for current sense
Output of the output current sense amplifier. Requires an external resistor to
comparator.
ground (RL). Gain is RL/RI, where RI is the external resistor in series with the
SIB pin.
13
S0B
Sense low input for output current
Tie to negative side of the current sense resistor through an external gain
sense amplifier
programming resistor. Amplifier transconductance is 1/RI.
14
SIB
Sense high input for output current
Tie to positive side of the current sense resistor through an external gain
sense amplifier
programming resistor (RI). Amplifier transconductance is 1/RI.
15
OVP
Over voltage indicator output
Open drain output with an internal pull-up resistor to VDD indicating OVS >VDD.
OVP is low when OVS>VDD.
16
OVS
Sense input for over voltage
Requires an external resistor divider. VDD is the reference voltage.
17
VDD
3.3V or 5V regulator output
Bypass with 0.1uF. Reference for over voltage shutdown and IOUT/IIN clamp
18, 28
HSA,
High side MOSFET source
Connect to bootstrap capacitor negative terminal and the source of the high side
HSB
connection
MOSFET.
2
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Product Folder Links: SM72295


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