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UCD9240 Datasheet(PDF) 11 Page - Texas Instruments

Part # UCD9240
Description  Digital PWM System Controller
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

UCD9240 Datasheet(HTML) 11 Page - Texas Instruments

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UCD9240
www.ti.com................................................................................................................................................... SLUS766C – JULY 2008 – REVISED NOVEMBER 2008
PIN DESCRIPTIONS
64-PIN PACKAGE
80-PIN PACKAGE
I/O
DESCRIPTION
PIN NO.
SIGNAL
PIN NO.
SIGNAL
Error Amplifier Differential Analog Inputs
50
EAp1
62
EAp1
AI
Error analog, differential voltage. Positive channel #1 input.
51
EAn1
63
EAn1
AI
Error analog, differential voltage. Negative channel #1 input.
52
EAp2
64
EAp2
AI
Error analog, differential voltage. Positive channel #2 input.
53
EAn2
65
EAn2
AI
Error analog, differential voltage. Negative channel #2 input.
54
EAp3
66
EAp3
AI
Error analog, differential voltage. Positive channel #3 input.
55
EAn3
67
EAn3
AI
Error analog, differential voltage. Negative channel #3 input.
56
EAp4
68
EAp4
AI
Error analog, differential voltage. Positive channel #4 input.
57
EAN4
69
EAn4
AI
Error analog, differential voltage. Negative channel #4 input.
Analog Inputs
61
AddrSens0
77
AddrSens0
AI
PMBus address sense. Least significant address bits
60
AddrSens1
76
AddrSens1
AI
PMBus address sense. Most significant address bits
59
CS-1A
75
CS-1A
AI
Power stage 1A current sense input. Analog comparator 1
3
CS-2A
4
CS-2A
AI
Power stage 2A current sense input. Analog comparator 2
2
CS-3A
3
CS-3A
AI
Power stage 3A current sense input. Analog comparator 3
1
CS-4A
2
CS-4A
AI
Power stage 4A current sense input. Analog comparator 4
63
CS-1B
79
CS-1B
AI
Power stage 1B current sense input
62
CS-2B
78
CS-2B
AI
Power stage 2B current sense input
CS-3B
74
CS-3B
AI
Power stage 3B current sense input
CS-4B
73
CS-4B
AI
Power stage 4B current sense input
4
Vin/ Iin
5
Vin/ Iin
AI
Input supply sense, alternates between Vin and Iin
5
VTRACK
6
VTRACK
AI
Voltage tracking
6
Temp
7
Temp
AI
Temperature sense input
Aux-in
Aux-in
72
AI
Unused analog input -- Tie to ground with 10 k
Ω resistor
(AD13)
(AD13)
Aux-in
Aux-in
71
AI
Unused analog input -- Tie to ground with 10 k
Ω reisistor
(AD14)
(AD14)
ADCref
1
ADCref
AI
ADC Decoupling Capacitor -- Tie 0.1
µF cap to ground
Digital PWM Outputs
17
dPWM-1A
21
dPWM-1A
O
DPWM 1A output
18
dPWM-1B
22
dPWM-1B
O
DPWM 1B output
19
dPWM-2A
23
dPWM-2A
O
DPWM 2A output
20
dPWM-2B
24
dPWM-2B
O
DPWM 2B output
21
dPWM-3A
25
dPWM-3A
O
DPWM 3A output
26
dPWM-3B
O
DPWM 3B output
23
dPWM-4A
27
dPWM-4A
O
DPWM 4A output
28
dPWM-4B
O
DPWM 4B output
External Fault Inputs
11
FAULT-1A
15
FAULT-1A
I
External fault input 1A
12
FAULT-1B
16
FAULT-1B
I
External fault input 1B
13
FAULT-2A
17
FAULT-2A
I
External fault input 2A
14
FAULT-2B
18
FAULT-2B
I
External fault input 2B
25
FAULT-3A
29
FAULT-3A
I
External fault input 3A
41
FAULT-3B
I
External fault input 3B
34
FAULT-4A
42
FAULT-4A
I
External fault input 4A
43
FAULT-4B
I
External fault input 4B
Copyright © 2008, Texas Instruments Incorporated
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