产品信息查询
产品 新闻 资料
首页 > 新闻中心 > 行业新闻
CXSD6294两相PWM控制芯片为高级显卡和主板应用提供了一个精确的电压调节系统功率MOSFET驱动器与控制器
发表时间:2020-04-22浏览次数:117
CXSD6294两相PWM控制芯片为高级显卡和主板应用提供了一个精确的电压调节系统功率MOSFET驱动器与控制器
 

目录c1F嘉泰姆

1.产品概述                       2.产品特点c1F嘉泰姆
3.应用范围                       4.下载产品资料PDF文档 c1F嘉泰姆
5.产品封装图                     6.电路原理图                   c1F嘉泰姆
7.功能概述                        8.相关产品c1F嘉泰姆

一,产品概述(General Description)   c1F嘉泰姆


      The CXSD6294, two-phase PWM control IC, provides a precision voltage regulation system for advanced graphic card and motherboard applications.c1F嘉泰姆
The integration of power MOSFET drivers into the controller IC and reducesc1F嘉泰姆
the number of external parts for a cost and space saving power management solution.c1F嘉泰姆
       The CXSD6294 uses a voltage-mode PWM architecture,operating withc1F嘉泰姆
adjust frequency from 100kHz to 800kHz.The device uses the voltage acrossc1F嘉泰姆
the DCRs of the inductors for current sensing achieves high efficiency. Thec1F嘉泰姆
device integrates adjustable load line voltage positioning (droop) and adopts low side RDS_ON for channel-cur-rent balance.c1F嘉泰姆
       The automatic phase reduction and over-current protection are accomplished through continuous inductor DCRs current sensing.The CXSD6294 also implement a one-bit VID control operation in which the feedback voltage is regulated andc1F嘉泰姆
tracks external input reference voltage.This controller protection features include over temperature(OTP), over-voltage(OVP), under-voltage(UVP) and over-current protections (OCP).The device also provides a power-on-reset function andc1F嘉泰姆
a programmable soft-start to prevent wrong operation and limit the input surge current during power-on or start-upc1F嘉泰姆
         The CXSD6294 is available in QFN4x4-24 packages.c1F嘉泰姆
二.产品特点(Features)c1F嘉泰姆


1.)Voltage-Mode Operation with Current Sharingc1F嘉泰姆
2.)Operate with 4.5V~13.2V Supply Voltagec1F嘉泰姆
3.)Support Single and Two-Phase Operationsc1F嘉泰姆
4.)+2% Reference Voltage Accuracy Over Temperaturec1F嘉泰姆
5.)Loss-Less Inductor DCR Current Sensingc1F嘉泰姆
6.)Adjustable Over Current Protection use DCR Current Sensingc1F嘉泰姆
7.)Programmable PWM Switching Frequency from 100kHz to 800kHzc1F嘉泰姆
8.)Dynamic Output Voltage Adjustment Adjustable Soft-startc1F嘉泰姆
     QFN4x4-24 Packagec1F嘉泰姆
9.)Halogen and Lead Free Available (RoHS Compliant)
三,应用范围 (Applications)c1F嘉泰姆


   VGAc1F嘉泰姆
   Mother Boardc1F嘉泰姆
四.下载产品资料PDF文档 c1F嘉泰姆


需要详细的PDF规格书请扫一扫微信联系我们,还可以获得免费样品以及技术支持c1F嘉泰姆

 QQ截图20160419174301.jpgc1F嘉泰姆

五, 产品封装图 (Package)c1F嘉泰姆


blob.pngc1F嘉泰姆
六.电路原理图c1F嘉泰姆


blob.pngc1F嘉泰姆
七,功能概述c1F嘉泰姆


Offset Current Adjustc1F嘉泰姆
The CXSD6294 integrated IOFS allows the offset current to adjust phase current. The IOFS pin voltage is nominalc1F嘉泰姆
0.5V when connecting a resistor to GND and 1.5V when connecting a resistor to VREF. Connecting a resistor fromc1F嘉泰姆
IOFS pin to GND generate a current source as:IOFS= 0.5V/RIOFSc1F嘉泰姆
This current is add to phase 1 current signal ISEN1 for cur-rent balance. Consequently, phase 2 will share morec1F嘉泰姆
percentage of output current. Connecting a resistor fromc1F嘉泰姆
IOFS pin to VREF generates a current source as:c1F嘉泰姆
IOFS= (2V-1.5V) /RIOFSc1F嘉泰姆
This current is add to phase 2 current signal ISEN2 for cur-rent balance. Consequently, phase 1 will share morec1F嘉泰姆
percentage of output current. c1F嘉泰姆
 Over-Temperature Protection (OTP)c1F嘉泰姆
The over-temperature circuit limits the junction tempera-ture of the CXSD6294. When the junction temperature c1F嘉泰姆

exo ceeds 150 C, a thermal sensor pulls UGTAEx and LGATEx low, allowing the devices to cool. The thermal c1F嘉泰姆

sensor allows the converters to start a soft-start process and regulates the output voltage again after the c1F嘉泰姆

junction temo  perature cools by 20 C. The OTP is designed with a 20 C hysteresis to lower the averagec1F嘉泰姆

 Junction Temperature (TJ) during continuous thermal overload conditions increasing the lifetime of the device. c1F嘉泰姆
OVPc1F嘉泰姆
The over-voltage protection (OVP) circuit monitors the FB (VFB) voltage to prevent the output from over-voltage.c1F嘉泰姆

When the V FB rises to 130% of the EAP voltage (V EAP), the JTMA 8700 turns off high-side and turn on low-sidec1F嘉泰姆
MOSFETs to sink output voltage (VOUT). As soon as the VFB falls below 110% of V EAP, the OVP comparator isc1F嘉泰姆
disengaged. The chip will restore its normal operation.c1F嘉泰姆
UVPc1F嘉泰姆
The under-voltage protection circuit monitors the voltage on FB (VFB) by Under-Voltage (UV) comparator toc1F嘉泰姆

 protect the PWM converter against short-circuit conditions. When the VFB falls below the falling UVP threshold c1F嘉泰姆

(50% VEAP), a fault signal is generated and the device turns off highside and low-side MOSFETs. The converter c1F嘉泰姆

shuts down and the output is latched to be floating. The CXSD6294 will initials a soft-start process until re-cyclec1F嘉泰姆

 RT/EN or VCCc1F嘉泰姆
八,相关产品                     更多同类产品...... c1F嘉泰姆


Switching Regulator >   Buck Controllerc1F嘉泰姆

Part_No c1F嘉泰姆

Package c1F嘉泰姆

Archic1F嘉泰姆

tectuc1F嘉泰姆

Phasec1F嘉泰姆

No.ofc1F嘉泰姆

PWMc1F嘉泰姆

Outputc1F嘉泰姆

Output c1F嘉泰姆

Currentc1F嘉泰姆

(A) c1F嘉泰姆

Inputc1F嘉泰姆

Voltage (V) c1F嘉泰姆

Referencec1F嘉泰姆

Voltagec1F嘉泰姆

(V) c1F嘉泰姆

Bias c1F嘉泰姆

Voltagec1F嘉泰姆

(V) c1F嘉泰姆

Quiescentc1F嘉泰姆

Currentc1F嘉泰姆

(uA) c1F嘉泰姆

minc1F嘉泰姆

maxc1F嘉泰姆

CXSD6273c1F嘉泰姆

SOP-14c1F嘉泰姆

QSOP-16c1F嘉泰姆

QFN4x4-16c1F嘉泰姆

VM    c1F嘉泰姆

1   c1F嘉泰姆

1     c1F嘉泰姆

30c1F嘉泰姆

2.9    c1F嘉泰姆

13.2c1F嘉泰姆

0.9c1F嘉泰姆

12     c1F嘉泰姆

8000c1F嘉泰姆

CXSD6274c1F嘉泰姆

SOP-8c1F嘉泰姆

VM   c1F嘉泰姆

1c1F嘉泰姆

1c1F嘉泰姆

20c1F嘉泰姆

2.9  c1F嘉泰姆

13.2 c1F嘉泰姆

0.8c1F嘉泰姆

12c1F嘉泰姆

5000c1F嘉泰姆

CXSD6274Cc1F嘉泰姆

SOP-8c1F嘉泰姆

VMc1F嘉泰姆

1c1F嘉泰姆

1c1F嘉泰姆

20c1F嘉泰姆

2.9c1F嘉泰姆

13.2c1F嘉泰姆

0.8c1F嘉泰姆

12c1F嘉泰姆

5000c1F嘉泰姆

CXSD6275c1F嘉泰姆

QFN4x4-24c1F嘉泰姆

VMc1F嘉泰姆

2c1F嘉泰姆

1c1F嘉泰姆

60c1F嘉泰姆

3.1c1F嘉泰姆

13.2c1F嘉泰姆

0.6c1F嘉泰姆

12c1F嘉泰姆

5000c1F嘉泰姆

CXSD6276c1F嘉泰姆

SOP-8c1F嘉泰姆

VMc1F嘉泰姆

1c1F嘉泰姆

1c1F嘉泰姆

20c1F嘉泰姆

2.2c1F嘉泰姆

13.2c1F嘉泰姆

0.8c1F嘉泰姆

5~12c1F嘉泰姆

2100c1F嘉泰姆

CXSD6276Ac1F嘉泰姆

SOP-8c1F嘉泰姆

VMc1F嘉泰姆

1c1F嘉泰姆

1c1F嘉泰姆

20c1F嘉泰姆

2.2c1F嘉泰姆

13.2c1F嘉泰姆

0.8c1F嘉泰姆

5~12c1F嘉泰姆

2100c1F嘉泰姆

CXSD6277/A/Bc1F嘉泰姆

SOP8|TSSOP8c1F嘉泰姆

VMc1F嘉泰姆

1c1F嘉泰姆

1c1F嘉泰姆

5c1F嘉泰姆

5c1F嘉泰姆

13.2c1F嘉泰姆

1.25|0.8c1F嘉泰姆

5~12c1F嘉泰姆

3000c1F嘉泰姆

CXSD6278c1F嘉泰姆

SOP-8c1F嘉泰姆

VMc1F嘉泰姆

1c1F嘉泰姆

1c1F嘉泰姆

10c1F嘉泰姆

3.3c1F嘉泰姆

5.5c1F嘉泰姆

0.8c1F嘉泰姆

5c1F嘉泰姆

2100c1F嘉泰姆

CXSD6279Bc1F嘉泰姆

SOP-14c1F嘉泰姆

VM   c1F嘉泰姆

1c1F嘉泰姆

1c1F嘉泰姆

10c1F嘉泰姆

5c1F嘉泰姆

13.2c1F嘉泰姆

0.8c1F嘉泰姆

12c1F嘉泰姆

2000c1F嘉泰姆

CXSD6280c1F嘉泰姆

TSSOP-24c1F嘉泰姆

|QFN5x5-32c1F嘉泰姆

VMc1F嘉泰姆

1c1F嘉泰姆

2c1F嘉泰姆

20c1F嘉泰姆

5c1F嘉泰姆

13.2c1F嘉泰姆

0.6c1F嘉泰姆

5~12c1F嘉泰姆

4000c1F嘉泰姆

CXSD6281Nc1F嘉泰姆

SOP14c1F嘉泰姆

QSOP16c1F嘉泰姆

QFN-16c1F嘉泰姆

VMc1F嘉泰姆

1c1F嘉泰姆

1c1F嘉泰姆

30c1F嘉泰姆

2.9c1F嘉泰姆

13.2c1F嘉泰姆

0.9c1F嘉泰姆

12c1F嘉泰姆

4000c1F嘉泰姆

CXSD6282c1F嘉泰姆

SOP-14c1F嘉泰姆

VMc1F嘉泰姆

1c1F嘉泰姆

1c1F嘉泰姆

30c1F嘉泰姆

2.2c1F嘉泰姆

13.2c1F嘉泰姆

0.6c1F嘉泰姆

12c1F嘉泰姆

5000c1F嘉泰姆

CXSD6282Ac1F嘉泰姆

SOP-14c1F嘉泰姆

VMc1F嘉泰姆

1c1F嘉泰姆

1c1F嘉泰姆

30c1F嘉泰姆

2.2c1F嘉泰姆

13.2c1F嘉泰姆

0.6c1F嘉泰姆

12c1F嘉泰姆

5000c1F嘉泰姆

CXSD6283c1F嘉泰姆

SOP-14c1F嘉泰姆

VMc1F嘉泰姆

1c1F嘉泰姆

1c1F嘉泰姆

25c1F嘉泰姆

2.2c1F嘉泰姆

13.2c1F嘉泰姆

0.8c1F嘉泰姆

12c1F嘉泰姆

5000c1F嘉泰姆

CXSD6284/Ac1F嘉泰姆

LQFP7x7 48c1F嘉泰姆

TQFN7x7-48c1F嘉泰姆

VMc1F嘉泰姆

1c1F嘉泰姆

6c1F嘉泰姆

0.015c1F嘉泰姆

1.4c1F嘉泰姆

6.5c1F嘉泰姆

-c1F嘉泰姆

5c1F嘉泰姆

1800c1F嘉泰姆

CXSD6285c1F嘉泰姆

TSSOP-24Pc1F嘉泰姆

VMc1F嘉泰姆

1c1F嘉泰姆

2c1F嘉泰姆

20c1F嘉泰姆

2.97c1F嘉泰姆

5.5c1F嘉泰姆

0.8c1F嘉泰姆

5~12c1F嘉泰姆

5000c1F嘉泰姆

CXSD6286c1F嘉泰姆

SOP-14c1F嘉泰姆

VMc1F嘉泰姆

1c1F嘉泰姆

1c1F嘉泰姆

10c1F嘉泰姆

5c1F嘉泰姆

13.2c1F嘉泰姆

0.8c1F嘉泰姆

12c1F嘉泰姆

3000c1F嘉泰姆

CXSD6287c1F嘉泰姆

SOP-8-P|DIP-8c1F嘉泰姆

VMc1F嘉泰姆

1c1F嘉泰姆

1c1F嘉泰姆

30c1F嘉泰姆

2.9c1F嘉泰姆

13.2c1F嘉泰姆

1.2c1F嘉泰姆

12c1F嘉泰姆

3000c1F嘉泰姆

CXSD6288c1F嘉泰姆

SSOP28c1F嘉泰姆

QFN4x4-24c1F嘉泰姆

VMc1F嘉泰姆

1c1F嘉泰姆

2c1F嘉泰姆

20c1F嘉泰姆

5c1F嘉泰姆

24c1F嘉泰姆

0.9c1F嘉泰姆

5c1F嘉泰姆

1200c1F嘉泰姆

CXSD6289c1F嘉泰姆

SOP-20c1F嘉泰姆

VMc1F嘉泰姆

1c1F嘉泰姆

2c1F嘉泰姆

20c1F嘉泰姆

2.2c1F嘉泰姆

13.2c1F嘉泰姆

0.6c1F嘉泰姆

5~12c1F嘉泰姆

4000c1F嘉泰姆

CXSD6290c1F嘉泰姆

SOP8|DFN3x3-10c1F嘉泰姆

VMc1F嘉泰姆

1c1F嘉泰姆

2c1F嘉泰姆

发表评论
共有条评论
用户名: 密码:
验证码: 匿名发表


最新信息
热门信息
推荐信息
头条信息