isl6236 Intersil Corporation, isl6236 Datasheet - Page 23

• Manufacturer Part Number: isl6236
• Description: High-efficiency, Quad-output, Main Power Supply Controllers For Notebook Computers
• Manufacturer: Intersil Corporation

14V/10mA
0.1µF
330µF
C15
9mΩ
6.3V
CP
C11
OUT1
5V/7A
0.1µF
C12
D1
D2a
D2b
D1a
D1b
FIGURE 68. ISL6236 TYPICAL SYSTEM REGULATOR APPLICATION CIRCUIT WITH 14V CHARGE PUMP
200kΩ
C10
10µF
L1
L2
C2
C11
R1
VIN: 5.5V to 25V
L1: 4.7µH
IRF7811AV
5V/3.3V SMPS
FREQUENCY
SWITCHING
IRF7807V
D3
39.2kΩ
0.1µF
D2
0.1µF
23
C14
R2
C8
Q4
Q3
FB1 TIED TO GND = 5V
FB1 TIED TO VCC = 1.5V
0.1µF
C9
C9
ON
ON
GND
VCC
OFF
OFF
OFF
200kΩ
6.8µH
7.6µH
2x470µF
330µF
FREQUENCY-DEPENDENT COMPONENTS
R3
200kHz/300kHz
t
ON
= VCC
PVCC
VIN
BOOT1
UGATE1
PHASE1
LGATE1
OUT1
EN1
BYP
FB1
AGND
ILIM1
SKIP#
EN LDO
SECFB
TON
ISL6236
ISL6236
6.8µH
4.7µH
2x330µF
330µF
VCC
PAD
1µF
C5
400kHz/300kHz
(OR OPEN)
t
ON
LDOREFIN
= REF
UGATE2
PHASE2
LGATE2
REFIN2
BOOT2
VREF3
PGND
POK1
POK2
OUT2
ILIM2
LDO
EN2
REF
150kΩ
4.7µH
4.7µH
2x330µF
330µF
R5
400kHz/500kHz
C4
0.1µF
t
OPEN
0.1µF
ON
C7
C3
VCC
VCC
= GND
REFIN2: DYNAMIC 0 TO 2V
REFIN2 TIED TO VREF3 = 1.05V
REFIN2 TIED TO VCC = 3.3V
LDOREFIN TIED TO GND = 5V
LDOREFIN TIED TO VCC = 3.3V
Q2
IRF7832
Q1
IRF7821
L2: 4.7µH
VCC
C1
C1
10
10µF
200kΩ
R4
LDO
3.3V/11A
OUT2
VCC
C6
4.7µF
R6
200kΩ
C2
C2
330µF
9mΩ
June 28, 2007
4V
FN6373.3