Datasheet > ISL9440BEVAL1Z

ISL9440BEVAL1Z

更新时间： 2022-11-10 11:29:05

品牌	Logo	应用领域
英特矽尔 - INTERSIL		控制器
页数	文件大小	规格书
14页	1207K
描述
Triple PWM Step-Down Synchronous Buck Controller and One LDO

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ISL9440BEVAL1Z 数据手册

ISL9440BEVAL1Z: Triple PWM Step-Down

Synchronous Buck Controller and One LDO

Application Note

September 25, 2009

AN1454.0

TABLE 1. FEATURES OF ISL944X FAMILY

ISL9440BEVAL1Z Evaluation Board

SWITCHING

FREQUENCY

(kHz)

SOFT-STARTING

TIME

The ISL9440BEVAL1Z evaluation board features the

ISL9440B. The ISL9440B is quad-output controller that

integrates three PWM synchronous buck controllers and one

low-dropout linear regulator controller. Then ISL9440B offers

programmable soft-start, independent enable functions and

integrates OV/OC/OT protection. The current mode control

architecture and internal compensation network keep

peripheral components to a minimum. The strong gate drivers

of the ISL9440B are capable of driving 20A current for

PWM1 and PWM2 and 15A for PWM3.

PART

NUMBER WARNING

EARLY

(ms)

ISL9440

YES

300

600

300

600

1.7

ISL9440A

ISL9441

1.7

ISL9440B

ISL9440C

YES

PROGRAMMABLE

The ISL9440BEVAL1Z is easy to set up to evaluate the

performance of the ISL9440B. Please refer to the “Electrical

Specifications” for typical performance summary.

Table 1 shows the difference in terms of ISL944xx family

features.

Electrical Specifications Recommended operation conditions, unless otherwise noted. Refer to schematic and typical performance

curves.

PARAMETER

TEST CONDITIONS

All outputs are in regulation

MIN

TYP

MAX

UNITS

V_IN

_OUT1

4.85

3.25

11.64

2.47

5.0

3.32

12.0

2.50

5.15

3.4

_OUT2

_OUT3

_OUT4

12.36

2.58

PWM1 Rated Current

PWM2 Rated Current

PWM3 Rated Current

LDO Rated Current

V_IN= 19V, T_A= +25°C, No forced airflow, All three PWM

outputs are fully loaded

R7 = 0Ω, R4 is not populated

0.8

1.0

_OUT1 Peak-to-Peak Ripple

V_IN= 23V, All three PWM outputs are fully loaded,

Oscilloscope is with full bandwidth.

mV_P-P

V_OUT2 Peak-to-Peak Ripple

V_OUT3 Peak-to-Peak Ripple

109

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.

All other trademarks mentioned are the property of their respective owners.

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