ISL6521CBZ-T Intersil, ISL6521CBZ-T Datasheet - Page 12

• Manufacturer Part Number: ISL6521CBZ-T
• Description: IC CTRLR PWM BUCK DC/DC 16-SOIC
• Manufacturer: Intersil

Specifications of ISL6521CBZ-T

• Pwm Type: Voltage Mode
• Number Of Outputs: 4
• Frequency - Max: 325kHz
• Duty Cycle: 100%
• Voltage - Supply: 4.5 V ~ 5.5 V
• Buck: Yes
• Boost: No
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: No
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 16-SOIC (3.9mm Width)
• Frequency-max: 325kHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ISL6521 DC-DC Converter Application Circuit
Figure 9 shows a power management application circuit for
powering an embedded processor. The circuit provides the
processor core voltage (V
clock voltage (V
from a single +5V supply. A component selection table
provides the recommended component values at various
load current steps.
Component Selection Table
I
CC_INT
10A
15A
20A
5A
V
V
2.5V
V
MEMORY
3.3V
I/O
CLOCK
+5V
+
+5V
CLOCK
10µF
C11
C
14
100µF
Pulse PG0006.601
Sumida CDEP134
Sumida CDEP134
Pulse P1172.103
C9
+
+
), and memory voltage (V
FIGURE 9. POWER SUPPLY APPLICATION CIRCUIT FOR AN EMBEDDED PROCESSOR
C
Q4
7.5µH
4.8µH
1.6µH
0.5µH
L
13
CORE
C8
OUT
Q3
C12
10µF
12
), the I/O voltage (V
R11
18.2kΩ
12.7kΩ
R8
R6
0.1µF
IRF7910
IRF7460
IRF7821
IRF7821
R10
R9
Q1
2 x
5.9kΩ
R7
5.9kΩ
DRIVE4
DRIVE3
DRIVE2
FB3
FB4
FB2
MEMORY
C7
I/O
IRF7910
IRF7476
IRF7832
IRF7832
), the
Q2
2 x
ISL6521
)
ISL6521
VCC
GND
(1A or less)
(3A or less)
(3A or less)
(3A or less)
2SD1802
2SD1802
2SD1802
FZT649
Q3
Intersil’s portfolio of multiple output controllers continues to
expand with new selections to better fit our customer’s
needs. Refer to our website for updated information:
www.intersil.com
BOOT
OCSET
UGATE
PHASE
LGATE
PGND
FB
COMP
C1
+
R5
C6
10MBZ1000M 10x12.5
10MBZ1000M 10x12.5
10MBZ1800M 10x20
10MBZ1500M 10x16
C5
Q2
Q1
1 x 1000µF
2 x 1000µF
2 x 1800µF
3 x 1500µF
R2
C1
MA732
0.47µF
D1
C3
2.26kΩ
R3
L
C14
OUT
C4
2.0kΩ
+
R1
R12
10µF
C2
1µF
C10
6.3MBZ1800M 10x16
6.3MBZ3300M 10x23
6.3MBZ3300M10x23
6.3MBZ1200M 8x16
1 x 1200µF
2 x 1800µF
2 x 3300µF
3 x 3300µF
C4
V
CORE
1.5V