Datasheet > ISL8121IRZ

ISL8121IRZ

更新时间： 2024-11-11 04:44:55

品牌	Logo	应用领域
英特矽尔 - INTERSIL		驱动器开关控制器
页数	文件大小	规格书
26页	651K
描述
3V to 20V, Two-Phase Buck PWM Controller with Integrated 4A MOSFET Drivers

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ISL8121IRZ 数据手册

ISL8121

Data Sheet

October 18, 2006

FN6352.1

3V to 20V, Two-Phase Buck PWM

Controller with Integrated 4A MOSFET

Drivers

Features

• Integrated Two-Phase Power Conversion

• Precision Output Voltage Regulation

The ISL8121 is a two-phase buck PWM controller featuring

an input voltage range of 3V to 20V and integrated MOSFET

drivers. Precision voltage regulation is provided for

point-of-load and other high-current applications that require

efficient and compact implementation. Multiphase buck

converter architecture uses interleaved timing to multiply

channel ripple frequency allowing smaller filter inductors and

reducing input and output ripple currents due to the ripple

cancellation effect. Lower ripple results in fewer input and

output capacitors. Smaller and low cost transistors can be

used resulting from the higher efficiency and reduced power

dissipation.

- ±0.8% System Accuracy Over Temperature (Industrial)

- Differential Remote Voltage Sensing for Increased

Voltage Sensing Accuracy

• Shunt Regulator for Wide Input Power Conversion

- 5V and Higher Bias

- Up to 20V Power Down-Conversion

• Precision Channel Current Sharing

- Loss-Less r

Current Sampling

DS(ON)

• Integrated High Capable 4A Drivers

• 0.6V Internal Reference

The ISL8121 offers an internal 0.6V reference with a system

regulation accuracy of ±0.8% (Industrial Temperature

range), an optional external reference input, and

user-adjustable switching frequency. Unity gain differential

amplifier targeted at remote voltage sensing capability

enhances the regulation. A power good signal (PGD) is

issued when the output voltage is within the regulated

window. An internal shunt regulator with optional external

connection capability extends the operational input voltage

range. For applications requiring voltage tracking or

sequencing, the ISL8121 offers a host of possibilities,

including coincidental, ratiometric, or offset tracking, as well

as sequential start-ups, user adjustable for a wide range of

applications.

• Full Spectrum Voltage Tracking

- Coincidental, Ratiometric, or Offset

• Sequential Start-up Control

• Selectable Switching Frequency up to 2MHz Per Phase

• Fast Transient Recovery Time

• Overcurrent Protection

• Overvoltage Protection

• Capable of Start-up in a Pre-Biased Load

• QFN Packages:

- QFN - Compliant to JEDEC PUB95 MO-220

- QFN - Quad Flat No Leads - Package Outline

Additional features include overvoltage and overcurrent

protection. Overcurrent protection can be tailored to various

applications with no need for additional parts. The ISL8121

- Near Chip Scale Package footprint, which improves

PCB efficiency and has a thinner profile

• Pb-Free Plus Anneal Available (RoHS Compliant)

uses cost and space-saving r

sensing for channel

DS(ON)

current balance, dynamic voltage positioning, and

overcurrent protection. Channel current balancing is

automatic and accurate with the integrated current-balance

control system.

Applications

• General Purpose High Current DC/DC Converters

• High Current, Low Voltage FPGA/ASIC DC/DC

Converters

• Telecom System

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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ISL8121IRZ 替代型号

型号	品牌	替代类型	描述	数据表
ISL8121IRZ-T	INTERSIL	完全替代	3V to 20V, Two-Phase Buck PWM Controller with Integrated 4A MOSFET Drivers
ISL8121IRZ-T	RENESAS	类似代替	3V to 20V, Two-Phase Buck PWM Controller with Integrated 4A MOSFET Drivers; QFN24; Temp Ra
ISL8126IRZ	INTERSIL	功能相似	Dual/n-Phase Buck PWM Controller with Integrated Drivers

与ISL8121IRZ相关器件

型号	品牌	获取价格	描述	数据表
ISL8121IRZ-T	INTERSIL	获取价格	3V to 20V, Two-Phase Buck PWM Controller with Integrated 4A MOSFET Drivers
ISL8121IRZ-T	RENESAS	获取价格	3V to 20V, Two-Phase Buck PWM Controller with Integrated 4A MOSFET Drivers; QFN24; Temp Ra
ISL8121IRZ-TR5453	RENESAS	获取价格	3V to 20V, Two-Phase Buck PWM Controller with Integrated 4A MOSFET Drivers; QFN24; Temp Ra
ISL8126	INTERSIL	获取价格	Dual/n-Phase Buck PWM Controller with Integrated Drivers
ISL8126	RENESAS	获取价格	Dual/n-Phase Buck PWM Controller with Integrated Drivers
ISL8126CRZ	INTERSIL	获取价格	Dual/n-Phase Buck PWM Controller with Integrated Drivers
ISL8126IRZ	INTERSIL	获取价格	Dual/n-Phase Buck PWM Controller with Integrated Drivers
ISL8130	INTERSIL	获取价格	Advanced Single Universal Pulse-Width Modulation (PWM) Controller
ISL8130	RENESAS	获取价格	Advanced Single Universal Pulse-Width Modulation (PWM) Controller
ISL8130IAZ	INTERSIL	获取价格	Advanced Single Universal Pulse-Width Modulation (PWM) Controller

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