HIP6020A_01 Datasheet, PDF (15/16 Pages) Intersil Corporation – Advanced Dual PWM and Dual Linear Power Controller

HIP6020A
HIP6020A DC-DC Converter Application Circuit
Figure 11 shows an application circuit of a power supply for a
microprocessor computer system. The power supply
provides the microprocessor core voltage (V_OUT1), the AGP
bus voltage (V_OUT2), the GTL bus voltage (V_OUT3), and the
memory voltage (V_OUT4) from +3.3V, +5VDC, and +12VDC.
For detailed information on a very similar circuit employing
an HIP6020, including a Bill-of-Materials and circuit board
description, see Application Note AN9836. Also see Intersil
web page (www.intersil.com).
+12V_IN
+5V_IN
GND
+3.3V_IN
L1
1µH
+ _C1-7
7x1000µF
C11
C8
1µF
C9
1000pF
1000pF
VCC
R2
28
23
R1
OCSET1 _1.0K
2.7K ^OCSET2
8
PGOOD
C10
1µF
POWERGOOD
V_OUT2
(3.3V/1.5V)
Q3
HUF76107D3S
L2
+ _C12-14
3x1000µF
6.2µH
CR1
MBRD835L
TYPEDET
+3.3V_IN
Q4
HUF76107D3S
V_OUT3
(1.5V)
+ _C26,27
2x1000µF
V_OUT4
(1.8V)
Q5
HUF76107D3S
+ _C28,29
2x1000µF
UGATE2
1
PHASE2 ₂
VSEN2 ¹⁰
SELECT ₁₁
VAUX
16
DRIVE3 ₁₈
FB3
19
U1
HIP6020A
27 ^UGATE1
26
PHASE1
25 ^LGATE1
24 ^PGND
22 ^VSEN1
21 ^FB1
COMP1
20
C24
10pF
Q1,2
HUF76143S3S
L3
V_OUT1
(1.3V-3.5V)
4.2µH
C15-22 ⁺
8x1000µF
R3
10.2K
R4
1.62K
C23
0.22µF
FAULT/RT
13
DRIVE4 ₁₅
FB4
14
SD ₉
VID0
7
6 ^VID1
5 ^VID2
4 ^VID3
3 ^VID4
12 ^SS
17
GND
C25 R5
2.7nF 150K
C30
0.1µF
R6
499K
FIGURE 11. POWER SUPPLY APPLICATION CIRCUIT FOR A MICROPROCESSOR COMPUTER SYSTEM
15