Datasheet > ISL8120IRZEC

ISL8120IRZEC

更新时间： 2024-11-11 11:12:47

品牌	Logo	应用领域
英特矽尔 - INTERSIL		驱动器开关控制器
页数	文件大小	规格书
33页	887K
描述
Dual/n-Phase Buck PWM Controller with Integrated Drivers

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ISL8120IRZEC 数据手册

ISL8120IRZEC

Data Sheet

April 21, 2009

FN6763.1

Dual/n-Phase Buck PWM Controller with

Integrated Drivers

Features

• Full Traceability Through Assembly and Test by

Date/Trace Code Assignment

The ISL8120IRZEC integrates two voltage-mode

synchronous buck PWM controllers to control a dual

independent voltage regulator or a 2-phase single output

regulator. It has PLL circuits and 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. It

also integrates current sharing control for the power module

to operate in parallel, which offers high system flexibility.

• Enhanced Process Change Notification per MIL-PRF-38535

• Enhanced Obsolescence Management

• Wide VIN Range Operation: 3V to 22V

- VCC Operation from 3V to 5.60V

• Fast Transient Response

- 80MHz Bandwidth Error Amplifier

- Voltage-Mode PWM Leading-Edge Modulation Control

- Voltage Feed-Forward

It has voltage feed forward compensation to maintain a

constant loop gain for optimal transient response, especially

for applications with a wide input voltage range. Its

integrated high speed MOSFET drivers and multi-feature

functions provide complete control and protection for a

2/n-phase synchronous buck converter, dual independent

regulators, or DDR tracking applications (VDDQ and VTT

outputs).

• Dual Channel 5V High Speed 4A MOSFET Gate Drivers

- Internal Bootstrap Diodes

• Internal Linear Regulator Provides a 5.4V Bias from VIN

• External Soft-Start Ramp Reference Input for

DDR/Tracking Applications

• Excellent Output Voltage Regulation

The output voltage of a ISL8120IRZEC-based converter can be

precisely regulated to as low as the internal reference voltage

0.6V, with a system accuracy of ±0.9% over industrial

temperature and line load variations. Channel 2 can track an

external ramp signal for DDR/tracking applications.

- 0.6V ±0.6%/±0.9% Internal Reference Over Industrial

Temperature

- True Differential Remote Voltage Sensing

• Oscillator Programmable from 150kHz to 1.5MHz

• Frequency Synchronization

The ISL8120IRZEC integrates an internal linear regulator,

which generates VCC from input rail for applications with

only one single supply rail. The internal oscillator is

adjustable from 150kHz to 1.5MHz, and is able to track an

external clock signal for frequency synchronization and

phase paralleling applications. The integrated Pre-Biased

Digital Soft-Start, Differential Remote Sensing Amplifier, and

Programmable Input Voltage POR features enhance the

value of ISL8120IRZEC.

• Scale for 1-, 2-, 3-, 4-, 6-, up to 12- Phase with Single

Output

- Excellent Phase Current Balancing

- Programmable Phase Shift Between the 2 Phases

Controlled by the ISL8120IRZEC and Programmable

Phase Shift for Clockout Signal

- Interleaving Operation Results in Minimum Input RMS

Current and Minimum Output Ripple Current

• Fault Hand Shake Capability for High System Reliability

• Overcurrent Protection

The ISL8120IRZEC protects against overcurrent conditions

by inhibiting the PWM operation while monitoring the current

- DCR, r

DS(ON)

, or Precision Resistor Current Sensing

with r

of the lower MOSFET, DCR of the output

DS(ON)

- Independent and Average Phase Current OCP

• Output Overvoltage and Undervoltage Protections

• Programmable Phase Shift in Dual Mode Operation

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

• Power-Good Indication

inductor, or a precision resistor. It also has a PRE-POR

Overvoltage Protection option, which provides some

protection to the load device if the upper MOSFET(s) is

shorted. See “PRE-POR Overvoltage Protection (PRE-POR-

OVP)” on page 24 for details.

• Dual Independent Channel Enable Inputs with Precision

Voltage Monitor and Voltage Feed-Forward Capability

The ISL8120IRZEC’s Fault Hand Shake 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.

- Programmable Input Voltage POR and its Hysteresis

with a Resistor Divider at EN Input

• Over-Temperature Protection

• Pre-Power-On-Reset Overvoltage Protection Option

• 32 Ld 5x5 QFN Package - Near Chip-Scale Footprint

- Enhanced Thermal Performance for MHz Applications

• Pb-Free (RoHS compliant)

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...33

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ISL8120IRZEC 替代型号

型号	品牌	替代类型	描述	数据表
ISL8120IRZ	INTERSIL	类似代替	Dual/n-Phase Buck PWM Controller with Integrated Drivers
ISL8121IRZ-T	RENESAS	功能相似	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ISL8120IRZEC相关器件

型号	品牌	获取价格	描述	数据表
ISL8120IRZ-T	INTERSIL	获取价格	Dual/n-Phase Buck PWM Controller with Integrated Drivers
ISL8120IRZ-T13	RENESAS	获取价格	DUAL SWITCHING CONTROLLER
ISL8120IRZ-T7	RENESAS	获取价格	DUAL SWITCHING CONTROLLER
ISL8120IRZ-TEC	INTERSIL	获取价格	Dual/n-Phase Buck PWM Controller with Integrated Drivers
ISL8121	INTERSIL	获取价格	3V to 20V, Two-Phase Buck PWM Controller with Integrated 4A MOSFET Drivers
ISL8121EVAL1	INTERSIL	获取价格	3V to 20V, Two-Phase Buck PWM Controller with Integrated 4A MOSFET Drivers
ISL8121IRZ	INTERSIL	获取价格	3V to 20V, Two-Phase Buck PWM Controller with Integrated 4A MOSFET Drivers
ISL8121IRZ	RENESAS	获取价格	3V to 20V, Two-Phase Buck PWM Controller with Integrated 4A MOSFET Drivers; QFN24; Temp Ra
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

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