VRM 9.1 DC-DC Converter Design Guidelines

Module Layout Guidelines
20 VRM 9.1 DC-DC Converter Design Guidelines
NOTES:
1. A single notch between pins 4&5 and between pins 58&59 is reserved for +48 V input VRMs
2. A single notch between pins 12&13 and between pins 50&51 identifies a +12 V input VRM
3. Reserved pins can be used for an I
2
C interface:
5 12C_CLK
9 12C_DATA
12 12C_A0
51 12C_A1
2.2 Mechanical Dimensions - PROPOSED
The maximum outline dimensions of the VRM should be as shown in Figure 2-1.
Table 2-2. VRM Pins
Pin Function Pin Function Pin Function Pin Function
1 VIN+ 62 VIN- 16 VO+ 47 VO+
2 VIN+ 61 VIN- 17 VO- 46 VO-
3 VIN+ 60 VIN- 18 VO+ 45 VO+
4
1
VIN+ 59
1
VIN- 19 VO- 44 VO-
5
1
Reserved
3
58
1
VRM-pres 20 VO+ 43 VO+
6 key 57 VID4 21 VO- 42 VO-
7 VID3 56 VID2 22 VO+ 41 VO+
8 VID1 55 VID0 23 VO- 40 VO-
9 Reserved
3
54 Ishare 24 VO+ 39 VO+
10 PWRGD 53 OUTEN 25 VO- 38 VO-
11 VO-sen- 52 VO-sen+ 26 VO+ 37 VO+
12
2
Reserved
3
51
2
Reserved
3
27 VO- 36 VO-
13
2
VO- 50
2
VO+ 28 VO+ 35 VO+
14 VO+ 49 VO+ 29 VO- 34 VO-
15 VO- 48 VO- 30 VO+ 33 VO+
31 VO- 32 VO-