Datasheet > IR3531

IR3531

更新时间： 2025-08-11 01:16:19

品牌	Logo	应用领域
英飞凌 - INFINEON		/
页数	文件大小	规格书
39页	1443K
描述
Sink and source tracking capability

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IR3531 数据手册

IR3531

4+1 Phase Dual Output Control IC

FEATURES

DESCRIPTION



Integrated 6.8V/0.8A Buck Regulator provides

The IR3531 control IC provides all the necessary control,

communication and protection to support compact dual

output power solutions up to 210W. The IR3531 can be

combined with either discrete IR3535 driver ICs and Direct

Fets^TMor our IR35XX family of footprint compatible and

scalable PowIRstages^TMwhich integrate the MOSFETs and

driver into the same package.

bias to Control and Driver IC(s)



Adjustable switching frequency from 250 KHz up

to 1.5MHz per phase based on the synchronization

SCLK input



Sink and source tracking capability

Margining via SVID for both rails

Pre-bias compatible

The IR3531 provides overall system control and current

sharing while the Driver IC or power stages senses per-

phase current locally and communicates it to the Control

IC. The IR3531 has tri-state PWM outputs to allow diode

emulation during light load events.

Soft Stop capability

0.5% overall system set point accuracy

Voltage Mode Modulation for excellent transient

performance

The IR3531 provides a high performance transient solution

through classic voltage mode control and our non-linear

transient solutions, Turbo^TMand Body Braking^TM. Turbo^TM

automatically turns on all phases to minimize load turn-on

transients while Body Braking^TMautomatically turns off the

low-side MOSFET to help dissipate stored inductor energy

at load turn-off.



Single NTC thermistor for current reporting, OC

Threshold, and Load Line thermal compensation

Complete protection including over-current,

over-voltage, over-temperature, open remote

sense and open control loop



Thermally enhanced 48L 7mm x 7mm MLPQ

package

RoHS compliant

BASIC APPLICATION CIRCUIT

PIN DIAGRAM

48 47 46 45 44 43 42 41 40 39 38 37

VRHOT#

VRRDY1

VRRDY

VCC

BBR1#

PWM4

PWM3

TSENS

ROSC/OVP

ADDR

IR3531

V12V

ICCP

48 Pin 7 x 7 MLPQ

Top View

ALERT#

VCLK

SCLK

PWM2

PWM1

BBR#

VDIO

PHSSHED 11

IMON_R1 12

49 GND

TRACK

13 14 15 16 17 18 19 20 21 22 23 24

Figure 2: IR3531 Package Top View

Figure 1: IR3531 Basic Application Circuit,

showing a 4+1 Configuration

March 22, 2012 | FINAL | V2.27

12 3 4 5 6 7...39

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与IR3531相关器件

型号	品牌	获取价格	描述	数据表
IR3531A	INFINEON	获取价格	41 Phase Dual Output Control IC Pre-bias compatible
IR3531A-MPBF	INFINEON	获取价格	41 Phase Dual Output Control IC Pre-bias compatible
IR3531A-MTRPBF	INFINEON	获取价格	41 Phase Dual Output Control IC Pre-bias compatible
IR3531_15	INFINEON	获取价格	Sink and source tracking capability
IR3535	INFINEON	获取价格	Synchronous Buck Converter Driver Over temperature reporting
IR3535MTRPBF	INFINEON	获取价格	Synchronous Buck Converter Driver Over temperature reporting
IR3536	INFINEON	获取价格	Digital Multi-Phase Buck Controller 6-phase 8-phase dual output PWM Controller
IR3536A	INFINEON	获取价格	Overclocking & Gaming Mode with Vmax setting
IR3536AMTRPBF	INFINEON	获取价格	Digital Multi-Phase Buck Controller
IR3536A_15	INFINEON	获取价格	Overclocking & Gaming Mode with Vmax setting

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