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ISL6528_06 Datasheet, PDF (12/13 Pages) Intersil Corporation – Dual Regulator - Standard Buck PWM and Linear Power Controller | |||
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ISL6528
ISL6528 Converter Application Circuit
Figure 9 shows a typical DC/DC converter circuit for a graphics card application. Additional information on this circuit
can be obtained by referencing application note AN9982.
+3.3V
C6
330µF
C7
330µF
+5V
C5
1µF
D2
BAT54
VOUT2
(1A)
Q2
C14
1µF
R5
11.3kâ¦
C12
R6
470µF 5.36kâ¦
GND
VCC
DRIVE2
FB2
ISL6528
UGATE
BOOT
COMP
FB
C8
1µF
C4
0.1µF
Q1
D1
L1
1.71µH
C1
150pF
R2
39.2kâ¦
C2
1500pF
R1
2.32kâ¦
VOUT1
(6A)
C9,C10
C11
2x470µF
1µF
Q1 FDS6690A
Fairchild
Q2 FZT649
Fairchild
L1 ETQ-P6F1R8BFA Panasonic
D1 B520C-13
Diode Inc.
R4
2.67kâ¦
C1
0.018µF
R2
30.9â¦
FIGURE 9. POWER SUPPLY APPLICATION CIRCUIT FOR A GRAPHICS CONTROLLER
12
FN9038.4
March 9, 2006
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