Datasheet

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 V
in
/ I
in
5 V
in
/ I
in
AI Input supply sense, alternates between V
in
and I
in
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 µ F 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
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Product Folder Link(s): UCD9240