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TPS40322 Datasheet(PDF) 9 Page - Texas Instruments

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Part # TPS40322
Description  Dual Output or Two-Phase Synchronous Buck Controller
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TPS40322 Datasheet(HTML) 9 Page - Texas Instruments

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UDG-10216
22
21
30
28
13
14
8
7
CS2+
PG2
FB2
COMP 2
LDRV1
PGND1
ILIM1
CS1+
27
4
5
2
1
32
10
SYNC
PHSET
EN2/SS2/GSNS
PG1
FB1
COMP 1
RT
6
AGND
3
EN1/SS1
12
CS2-
29
CS1-
31
24
25
23
UVLO
HDRV1
BOOT1
SW1
18
19
11
LDRV2
PGND2
ILIM2/VSNS
16
15
17
HDRV2
BOOT2
SW2
20
BP6
26
VDD
BP6
Linear
Regulator
PWM
Logic
PWM1
PWM2
+
OC
UV
OV
Detect
+
Ramp1
Ramp2
ISHARE
BP6
+
+
–
–
VREF
10 ?A
+
–
–
VREF
10 ?A
+
FB1
FB2
OV
UV
OC
Ramp
Generator
RAMP1
RAMP2
–
–
BP6
+
9
DIFFO
R
R
R
R
VSNS
GSNS
BP6
Σ
Σ
BG
VREF
TPS40322
www.ti.com
SLUSAF8
– JUNE 2011
DEVICE INFORMATION
FUNCTIONAL BLOCK DIAGRAM
NOTE
•
In multi-phase mode, the EN2/SS2/GSNS pin becomes the GSNS pin and the ILIM2/VSNS pin
becomes the VSNS pin.
•
The two channels are identical unless specified.
•
The following naming conventions are used to better describe the functions. For example,
COMPx refers to COMP1 and COMP2, FBx refers to FB1 and FB2.
Copyright
© 2011, Texas Instruments Incorporated
9


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