Datasheet > ISL6442

ISL6442

更新时间： 2024-12-01 04:58:43

品牌	Logo	应用领域
英特矽尔 - INTERSIL		控制器
页数	文件大小	规格书
16页	397K
描述
Dual (180∑ Out-of-Phase) PWM and Linear Controller

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ISL6442 数据手册

ISL6442

Data Sheet

April 7, 2006

FN9204.1

Dual (180° Out-of-Phase) PWM and Linear

Controller

Features

• 4.5V to 5.5V or 5.5V to 24V Input Voltage Range

The ISL6442 is a high-performance, triple output controller

that provides a single high-frequency power solution

primarily for Broadband, DSL and Networking applications.

This device integrates complete control, monitoring and

protection functions for two synchronous buck PWM

controllers and one linear controller. Input voltage ripple and

total RMS input current is substantially reduced by

• ±1.5% PWM Switcher Reference Accuracy Over Line and

Temperature

• Three Programmable Power Output Voltages

- Two PWM Controllers with Out-of-Phase Operation

- Voltage-Mode PWM Control

- One Linear Controller

synchronized 180° out-of-phase operation of the two PWMs.

• Programmable Switching Frequency from 300kHz to 2.5MHz

• Fast Transient Response

- High-Bandwidth Error Amplifier

• Extensive Circuit Protection Functions

- Overvoltage, Undervoltage, and Overtemperature

- Programmable Overcurrent Limit with Hiccup Mode

Operation

- Lossless Current Sensing (no Sense Resistor needed)

The two PWM buck converters provide simple voltage mode

control. The output voltage of the converters can be

precisely regulated to as low as 0.6V, with a maximum

tolerance of ±1.5% over temperature and line variations.

Programmable switching frequency up to 2.5MHz provides

fast transient response and small external components. The

linear controller provides a low-current output.

The ISL6442 has voltage-tracking capability. Each controller

has soft-start and independent enable functions combined

on a single pin. A capacitor from SS/EN to ground sets the

soft-start time; pulling SS/EN pin below 1V disables the

controller. Both outputs can soft-start into a pre-biased load.

• Externally Adjustable Soft-Start Time

- Independent Enable Control

- Voltage Tracking Capability

- Able to Soft-Start into a Pre-Biased Load

• PGOOD Output with Delay

• 24 Ld QSOP

• Pb-Free Plus Anneal Available (RoHS Compliant)

The ISL6442 incorporates robust protection features. An

adjustable overcurrent protection circuit monitors the output

current by sensing the voltage drop across the upper

MOSFET r

. Hiccup mode overcurrent operation

DS(ON)

Applications

• Complete 1 Chip Solution for DSL Modems/Routers

• DSP, ASIC, and FPGA Point of Load Regulation

• ADSL, Broadband and Networking Applications

protects the DC/DC converters from damage under over-

load and short circuit conditions. A PGOOD signal is issued

when soft-start is complete and PWM outputs are within 10%

of their regulated values and the linear regulator output is

higher than 75% of its nominal value. Thermal shut-down

circuitry turns the device off if the IC temperature exceeds

150°C.

Pinout

ISL6442 (QSOP)

TOP VIEW

Ordering Information

OCSET1

SS1/EN1

COMP1

FB1

24 VIN

PART

TEMP.

PKG.

23 BOOT1

NUMBER* MARKING RANGE (°C) PACKAGE DWG. #

UGATE1

ISL6442IA

-40 to 85

24 Ld QSOP M24.15

21 PHASE1

20 LGATE1

19 VCC

ISL6442IAZ ISL6442IAZ

(Note)

24 Ld QSOP M24.15

(Pb-free)

SGND

LCDR

LCFB

FB2

* Add “-TK” to suffix for tape and reel.

18 PGND

NOTE: Intersil Pb-free plus anneal products employ special Pb-free

material sets; molding compounds/die attach materials and 100% matte

tin plate termination finish, which are RoHS compliant and compatible

with both SnPb and Pb-free soldering operations. Intersil Pb-free

products are MSL classified at Pb-free peak reflow temperatures that

meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.

17 LGATE2

16 PHASE2

COMP2 10

SS2/EN2 11

OCSET2 12

UGATE2

14 BOOT2

13 PGOOD

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.

12 3 4 5 6 7...16

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与ISL6442相关器件

型号	品牌	获取价格	描述	数据表
ISL6442IA	INTERSIL	获取价格	Dual (180∑ Out-of-Phase) PWM and Linear Contr
ISL6442IAZ	INTERSIL	获取价格	Dual (180∑ Out-of-Phase) PWM and Linear Contr
ISL6442IAZ	RENESAS	获取价格	2.5MHz Dual, 180° Out-of-Phase, Step-Down PWM and Single Linear Controller; QSOP24
ISL6442IAZ-TK	RENESAS	获取价格	2.5MHz Dual, 180° Out-of-Phase, Step-Down PWM and Single Linear Controller; QSOP24
ISL6443	INTERSIL	获取价格	300kHz Dual, 180 Degree Out-of-Phase, Step-Down PWM and Single Linear Controller
ISL6443_06	INTERSIL	获取价格	300kHz Dual, 180∑ Out-of-Phase, Step- Down PW
ISL6443A	INTERSIL	获取价格	300kHz Dual, 180∑ Out-of-Phase, Step-Down PWM
ISL6443AIRZ	INTERSIL	获取价格	300kHz Dual, 180∑ Out-of-Phase, Step-Down PWM
ISL6443AIVZ	INTERSIL	获取价格	300kHz Dual, 180∑ Out-of-Phase, Step-Down PWM
ISL6443AIVZ	RENESAS	获取价格	300kHz Dual, 180° Out-of-Phase, Step-Down PWM and Single Linear Controller; QFN28,

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