
PRODUCT SPECIFICATION
RC5054A
11
RC5054A DC-DC Converter
Application Circuit
Figure 10 shows an application circuit of a DC-DC Converter
for an Intel Pentium Pro microprocessor.
+12V
+V
O
PGND
RC5054A
VSEN
RT
FB
COMP
VID0
VID1
VID2
VID3
VID4
OVP
19
SS
PGOOD
D/A
GND
MONITOR
AND
PROTECTION
OSC
VCC
L1 - 1
μ
H
C1
L2
3
μ
H
C
O
0.1
μ
F
2x 1
μ
F
1
μ
F
47
2.2nF
8.2nF
20K
1.33K
5x 1000
μ
F
9x 1000
μ
F
0.1
μ
F
LGATE
UGATE
OCSET
PHASE
BOOT
15
Q1
Q2
2N6394
1K
1000pF
D1
F1
2K
V
IN
= +5V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
4.7
15
16
17
20
18
+
-
+
-
Component Selection Notes;
C
0
- 9 Each 1000
μ
F 6.3W VDC, Sanyo MV-GX or Equivalent
C1 - 5 Each 1000
μ
F 25W VDC, Sanyo MV-GX or Equivalent
L2 - Core: Micrometals T50-52B; Each Winding: 10 Turns of 16AWG
L1 - Core: Micrometals T50-52; Winding: 5 Turns of 18AWG
D1 - 3A, 40V Schottky, Motorola MBR340 or Equivalent
Q1, Q2 - Fairchild FDB6030L
4.7
Figure 9. Pentium Pro DC-DC Converter