ISL9440CEVAL1Z Datasheet, PDF (1/11 Pages) Intersil Corporation – Triple PWM Step-Down Synchronous Buck Controller and One LDO

ISL9440CEVAL1Z: Triple PWM Step-Down
®
Synchronous Buck Controller and One LDO
Application Note
June 30, 2009
AN1482.0
ISL9440CEVAL1Z Evaluation Board
The ISL9440CEVAL1Z evaluation board features the
ISL9440C. The ISL9440C is quad-output controller that
integrates three PWM synchronous buck controllers and one
low-dropout linear regulator controller. The ISL9440C offers
programmable soft-start, independent enable functions and
integrates OV/OC/OT protection. The current mode control
architecture and internal compensation network keep
peripheral component counts minimized. 600kHz switching
frequency can minimize inductor size while the strong gate
driver is able to deliver 12A to each PWM channel.
Table 1 shows the difference in terms of ISL944xx family
features.
TABLE 1. FEATURES OF ISL944xx FAMILY
PART
NUMBER
SWITCHING
EARLY FREQUENCY
WARNING
(kHz)
SOFT-STARTING
TIME
(ms)
ISL9440
ISL9440A
ISL9441
ISL9440B
ISL9440C
YES
YES
NO
YES
YES
300
1.7
600
1.7
300
1.7
300
PROGRAMMABLE
600
PROGRAMMABLE
The ISL9440CEVAL1Z is easy to set up to evaluate the
performance of the ISL9440C. Please refer to the “Electrical
Specifications” for typical performance summary.
FIGURE 1. ISL9440CEVAL1Z EVALUATION BOARD
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2009. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.