Datasheet
Table Of Contents
- FEATURES
- APPLICATIONS
- DESCRIPTION
- ELECTRICAL SPECIFICATIONS
- ABSOLUTE MAXIMUM RATINGS
- RECOMMENDED OPERATING CONDITIONS
- ELECTRICAL CHARACTERISTICS
- ADC MONITORING INTERVALS AND RESPONSE TIMES
- HARDWARE FAULT DETECTION LATENCY
- PMBus/SMBus/I2C
- I2C/SMBus/PMBus Timing Characteristics
- FUNCTIONAL OVERVIEW
- PMBus Interface
- Resistor Programmed PMBus Address Decode
- JTAG Interface
- Bias Supply Generator (Series Regulator Controller)
- Power On Reset
- External Reset
- Output Voltage Adjustment
- Analog Front End (AFE)
- Digital Compensator
- DPWM Engine
- Flexible Rail/Power Stage Configuration
- DPWM Phase Distribution
- DPWM Synchronization
- Phase Shedding at Light Current Load
- Phase Adding at Normal Current Load
- Output Current Measurment
- Output Current Balancing
- Overcurrent Detection
- Current Foldback Mode
- Input Voltage and Current Monitoring
- Temperature Monitoring
- Temperature Balancing
- Soft Start, Soft Stop Ramp Sequence
- Input UV Lockout
- Voltage Tracking
- Sequencing
- Fan Control
- Non-volatile Memory Error Correction Coding
- APPLICATION INFORMATION
58
46
45
7
44
47
9
62
63
64
65
66
67
68
69
EAp1
EAn1
EAp2
EAn2
EAp3
EAn3
EAp4
EAn4
AddrSen0
AddrSen1
CS-1A (COMP1)
CS-2A (COMP2)
CS-3A (COMP3)
CS-4A (COMP4)
CS-1B
CS-2B
CS-3B
CS-4B
Vin/Iin
Vtrack
Temp
Aux-in (AD 13)
Aux-in (AD 14)
ADCref
77
76
75
4
3
2
79
78
74
73
5
6
7
72
71
1
DPWM-1A
DPWM-1B
DPWM-2A
DPWM-2B
DPWM-3A
DPWM-3B
DPWM-4A
DPWM-4B
21
22
23
24
25
26
27
28
SRE-1A
SRE-1B
SRE-2A
SRE-2B
SRE-3A
SRE-3B
SRE-4A
SRE-4B
FAULT-1A
FAULT-1B
FAULT-2A
FAULT-2B
FAULT-3A
FAULT-3B
FAULT-4A
FAULT-4B
12
11
51
37
38
52
33
50
PMBus-Clk
PMBus-Data
PMBus-Alert
PMBus-Ctrl
PowerGood
19
20
35
36
49
V33FB
V33A
V33D
V33DIO-1
V33DIO-2
BPCap
70
58
57
8
56
59
A -1
VSS
A -2
VSS
A
-3
VSS
D -1
VSS
D
-2
VSS
D -3
VSS
61
60
80
9
34
55
/RESET
13
48
47
46
45
44
14
15
16
17
18
29
41
42
43
TMUX-0
TMUX-1
TMUX-2
39
40
54
SYNC-IN
SYNC-OUT
FAN-PWM
FAN-TACH
DiagLED
31
30
53
32
10
UCD9240-64pin UCD9240-80pin
50
51
52
53
54
55
56
57
EAp1
EAn1
EAp2
EAn2
EAp3
EAn3
EAp4
EAn4
AddrSens0
AddrSens1
CS-1A (COMP1)
CS-2A (COMP2)
CS-3A (COMP3)
CS-4A (COMP4)
CS-1B
CS-2B
Vin/Iin
Vtrack
Temp
61
60
59
3
2
1
63
62
4
5
6
DPWM-1A
DPWM-1B
DPWM-2A
DPWM-2B
DPWM-3A
DPWM-4A
17
18
19
20
21
23
SRE-1A
SRE-1B
SRE-2A
SRE-2B
SRE-3A
SRE-4A
FAULT-1A
FAULT-1B
FAULT-2A
FAULT-2B
FAULT-3A
FAULT-4A
22
24
33
35
29
30
PMBus-Clk
PMBus-Data
PMBus-Alert
PMBus-Ctrl
PowerGood (TMS)
15
16
27
28
39
V33FB
V33A
V33D
V33DIO-1
V33DIO-2
BPCap
A -1
VSS
A -2
VSS
A -3
VSS
D
-1
VSS
D -2
VSS
D
-3
VSS
49
48
64
8
26
43
/RESET
9
/TRST
TRCK
40
10
11
12
13
14
25
34
TMUX-0
TMUX-1
TMUX-2
31
32
42
FAN-PWM
FAN-TACH (TCK)
SYNC-IN (TDI)
SYNC-OUT (TDO)
41
36
38
37
/TRST
TMS
TDI
TDO
TCK
TRCK
UCD9240
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................................................................................................................................................... SLUS766C – JULY 2008 – REVISED NOVEMBER 2008
Figure 2. UCD9240 Pin Assignment
The UCD9240 is available in a plastic 64-pin QFN package (RGC) and an 80-pin TQFP package (PFC).
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Product Folder Link(s): UCD9240