Datasheet > ISL8126

ISL8126

更新时间： 2024-11-11 11:12:47

品牌	Logo	应用领域
英特矽尔 - INTERSIL		驱动器控制器
页数	文件大小	规格书
39页	1291K
描述
Dual/n-Phase Buck PWM Controller with Integrated Drivers

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ISL8126 数据手册

Dual/n-Phase Buck PWM Controller with Integrated

Drivers

ISL8126

Features

The ISL8126 integrates two voltage-mode PWM leading-edge

modulation control with input feed-forward synchronous buck

PWM controllers to control dual independent voltage

regulators or a 2-phase single output regulator. It also

integrates current sharing control for the power module to

operate in parallel, which offers high system flexibility.

• Wide V Range Operation: 3V to 26.5V

- VCC Operation from 3V to 5.60V

• Excellent Output Voltage Regulation: 0.6V Internal

Reference

• Frequency Synchronization with Programmable Phase Delay

up to 12-Phase Applications

The ISL8126 integrates an internal linear regulator, which

generates IC’s bias voltages for applications with only one

single supply rail. The internal oscillator is adjustable from

150kHz to 1.5MHz, and is able to synchronize to an external

clock signal for frequency synchronization and phase

paralleling applications. Its PLL circuit can output a

phase-shift-programmable clock signal for the system to be

expanded to 3-, 4-, 6-, 12- phases with desired interleaving

phase shift.

• Fault Spreading Capability for High System Reliability

• Digital Soft-Start with Pre-Charged Output Start-up

Capability

• Dual Independent Channel Enable Inputs with Precision

Voltage Monitor and Voltage Feed-forward Capability

- Programmable Input Voltage POR and its Hysteresis with

a Resistor Divider at EN Input

• Extensive Circuit Protection Functions: Output Overvoltage,

Undervoltage, Overcurrent Protection, Over-temperature and

Pre-Power-On-Reset Overvoltage Protection Option

The ISL8126’s Fault Spreading feature protects any channel

from overloading/stressing due to system faults or phase

failure. The undervoltage fault protection features are also

designed to prevent a negative transient on the output voltage

during falling down. This eliminates the Schottky diode that is

used in some systems for protecting the load device from

reversed output voltage damage.

Applications

• Power Supply for Datacom/Telecom and POL

• Paralleling Power Module

Table 1 summarizes the differences between ISL8126 and

ISL8126A.

• Wide and Narrow Input Voltage Range Buck Regulators

TABLE 1.

Related Literature

• Technical Brief TB389 “PCB Land Pattern Design and

Surface Mount Guidelines for QFN Packages”

REFERENCE VOLTAGE

(V)

VSEN1+ to VSEN1- INPUT

IMPEDANCE

DEVICES

ISL8126

ISL8126A

0.6

0.7

500kΩ

>2MΩ

September 7, 2011

FN7892.0

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.

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

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与ISL8126相关器件

型号	品牌	获取价格	描述	数据表
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
ISL8130IRZ	INTERSIL	获取价格	Advanced Single Universal Pulse-Width Modulation (PWM) Controller
ISL81334	INTERSIL	获取价格	【15kV ESD Protected, Two Port, Dual Protocol
ISL81334	RENESAS	获取价格	±15kV ESD Protected, 5V, Two Port, Dual Proto
ISL81334_07	INTERSIL	获取价格	【15kV ESD Protected, 5V, Two Port, Dual Proto
ISL81334IAZ	INTERSIL	获取价格	【15kV ESD Protected, Two Port, Dual Protocol

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