ISL6236A Datasheet, PDF (24/37 Pages) Intersil Corporation – High-Efficiency, Quad-Output, Main Power Supply Controllers for Notebook Computers

ISL6236A
VIN: 5.5V TO 25V
C₅
1µF
PVCC
VCC
LDO
OUT1
5V/7A
C₁₀
10µF
Q₃
IRF7807V
L₁: 4.7µH
C₉
0.1µF
VIN
BOOT1
UGATE1
PHASE1
LDOREFIN
BOOT2
UGATE2
PHASE2
C₁₁
330µF
9mΩ
6.3V
Q₄
IRF7811AV
D₃
VCC
LGATE1
LGATE2
OUT1
EN1
ISL6236A
PGND
OUT2
D₁
C₁₂
0.1µF
D1a
D1b
CP
D2a
14V/10mA _D2b
C₁₅
0.1µF
R₁
200kΩ
C₈
0.1µF
C₁₄
0.1µF
D₂
R₂
39.2kΩ
FB1 TIED TO GND = 5V
FB1 TIED TO VCC = 1.5V
R₃
200kΩ
ON
OFF
GND
BYP
FB1
AGND
ILIM1
SKIP
EN LDO
SECFB
TON
EN2
PAD
REFIN2
ILIM2
VREF3
REF
POK1
POK2
C4
0.1µF
LDOREFIN TIED TO GND = 5V
LDOREFIN TIED TO VCC = 3.3V
LDO
C₁
10µF
C₆
4.7µF
Q₁
IRF7821
L₂: 4.7µH
OUT2
3.3V/11A
Q₂
IRF7832
C₂
330µF
9mΩ
4V
VCC
REFIN2: DYNAMIC 0V TO 2V
REFIN2 TIED TO VREF3 = 1.05V
REFIN2 TIED TO VCC = 3.3V
VCC
R₅
150kΩ
C₃
OPEN
VCC
VCC
C₇
0.1µF
R₄
200kΩ
R₆
200kΩ
5V/3.3V SMPS
SWITCHING
FREQUENCY
L₁
L₂
C₂
C11
FREQUENCY-DEPENDENT COMPONENTS
t_ON = VCC
200kHz/300kHz
t_ON = REF
(OR OPEN)
400kHz/300kHz
6.8µH
6.8µH
7.6µH
4.7µH
2x470µF
2x330µF
330µF
330µF
t_ON = GND
400kHz/500kHz
4.7µH
4.7µH
2x330µF
330µF
FIGURE 69. ISL6236A TYPICAL SYSTEM REGULATOR APPLICATION CIRCUIT WITH 14V CHARGE PUMP
24
FN6453.3
March 18, 2008