ISL6522BIBZ Intersil, ISL6522BIBZ Datasheet - Page 13

• Manufacturer Part Number: ISL6522BIBZ
• Description: IC PWM BUCK BST VM 14SOIC
• Manufacturer: Intersil

Specifications of ISL6522BIBZ

• Pwm Type: Voltage Mode
• Number Of Outputs: 1
• Frequency - Max: 1MHz
• Duty Cycle: 100%
• Voltage - Supply: 10.8 V ~ 13.2 V
• Buck: Yes
• Boost: Yes
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: No
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 14-SOIC (3.9mm Width), 14-SOL
• Frequency-max: 1MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ISL6522B DC-DC Converter Application Circuit
Figure 11 shows a DC-DC converter circuit for a
microprocessor application, originally designed to employ
the HIP6006 controller. Given the similarities between the
HIP6006 and ISL6522B controllers, the circuit can be
implemented using the ISL6522B controller without any
Component Selection Notes:
Q1, Q2 - Fairchild MOSFET; RFP25N05
C1-C3 - Three each 680µF 25W VDC, Sanyo MV-GX or equivalent.
C6-C9 - Four each 1000µF 6.3W VDC, Sanyo MV-GX or equivalent.
CR1 - 1N4148 or equivalent.
CR2 - 3A, 40V Schottky, Motorola MBR340 or equivalent.
L1 - Core: micrometals T50-52B; winding: ten turns of 17AWG.
ENABLE
12V
RTN
V
CC
IN
0.1µF
C13
3x 680µF
R2
1K
C1-3
R7
10K
R3
1K
SPARE
13
R1
SPARE
SS
RT
FB
C16
0.01µF
C15
3
1
6
5
1206
C12
1µF
REF
FIGURE 11. DC-DC CONVERTER APPLICATION CIRCUIT
33pF
C14
+
-
+
-
R4
SPARE
OSC
15K
R5
MONITOR AND
PROTECTION
ISL6522B
U1
14
4
COMP
VCC
+
-
-
+
COMP
TP1
7
ISL6522B
GND
10
13
12
11
8
9
2
OCSET
BOOT
UGATE
PHASE
PVCC
LGATE
PGND
modifications. Detailed information on the circuit, including a
complete bill of materials and circuit board description, can
be found in Application Note AN9722. See Intersil’s home
page on the web: http://www.intersil.com.
1000pF
JP1
3.01K
C19
Q1
R6
Q2
CR2
MBR
340
CR1
4148
0.1µF
C20
C17-18
2x 1µF
1206
PHASE
TP2
4x 1000µF
L1
C6-9
RTN
V
OUT