CXSD6275, two-phase PWM control IC, provides a precision voltage regulation system for advanced graphic microprocessors in graphics card applications. The integration of power MOSFET drivers into

发布时间:2020-04-06 09:43:38 浏览次数:703 作者:嘉泰姆 来源:1
摘要:CXSD6275, two-phase PWM control IC, provides a precision voltage regulation system for advanced graphic microprocessors in graphics card applications. The integration of power MOSFET drivers into

目录afA嘉泰姆

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

,产品概述(General Description)    afA嘉泰姆


            The CXSD6275, two-phase PWM control IC, provides a precision voltage regulation system for advanced graphic microprocessors in graphics card applications. The integration of power MOSFET drivers into the controller
IC and reduces the number of external parts for a cost and space saving power management solution.
       The CXSD6275 uses a voltage-mode PWM architecture,operating with fixed-frequency, to provides excellent load transient response. The device uses the voltage across the DCRs of the inductors for current sensing. Load line
voltage positioning (DROOP), channel-current balance,and over-current protection are accomplished through continuous inductor DCR current sensing.
The MODE pin programs single- or two- phase operation.When IC operates in two-phase mode normally, it can transfer two-phase mode to single-phase mode at liberty.Nevertheless, once operates in single-phase mode, the operation mode is latched. It is required to toggle SS,REFIN/EN or 5VCC pin to reset the IC. Such feature of the MODE pin makes the CXSD6275 ideally suitable for dual
power input applications, such as PCIE interfaced graphic cards.This control IC‘s protection features include a set of sophisticated over-temperature, over-voltage, under-voltage, and over-current protections. Over-voltage re-sults in the converter turning the lower MOSFETs on to clamp the rising output voltage and protects the
microprocessor. The over-current protection level is set through external resistors. The device also provides a power-on-reset function and a programmable soft-start
to prevent wrong operation and limit the input surge current during power-on or start-up.
       The CXSD6275 is available in a QFN4x4-24A package

二.产品特点(Features)afA嘉泰姆


1.)Voltage-Mode Operation with Current Sharing
       Adjustable Feedback Compensation
       Fast Load Transient Response
2.)</strong>Operate with 8V~13.2VCC Supply Voltage
3.)</strong>Selectable External or Internal 0.6V Reference
     ±1.5% Accuracy Over Temperature
4.)</strong>Support Single- and Two-Phase Operations
5.)</strong>5VCC and Buffered Reference Outputs
6.)</strong>8~12V Gate Drivers with Internal Bootstrap Diode
7.)</strong>Lossless Inductor DCR Current Sensing
8.)</strong>Selectable Operation Frequency
      150k/300k/400kHz per Phase
9.)</strong>Power-OK Indicator Output
      Regulated 1.5V on REFOUT/POK
10.)</strong>Adjustable Over-Current Protection (OCP)
11.)</strong>Accurate Load Line (DROOP) Programming
12.)</strong>Adjustable Soft-Start
13.)</strong>Over-Voltage Protection (OVP)
14.)</strong>Under-Voltage Protection (UVP)
15.)</strong>Over-Temperature Protection (OTP)
16.)</strong>QFN4x4 24-Lead Package (QFN4x4-24A)
17.)</strong>Lead Free and Green Devices Available 
(RoHS Compliant)
三</span>,应用范围 (Applications)afA嘉泰姆


Graphics Card GPU Core Power SupplyafA嘉泰姆

Motherboard Chipset or DDR SDRAM Core PowerSupply
On-board High Power PWM Converter with Out-
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put Current up to 60A
四.下载产品资料PDF文档 afA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</span>!</span>afA嘉泰姆

 QQ截图20160419174301.jpgafA嘉泰姆

五,产品封装图 (Package)

FUNCTION
afA嘉泰姆

PINafA嘉泰姆

FUNCTIONafA嘉泰姆

NO.afA嘉泰姆

NAMEafA嘉泰姆

1afA嘉泰姆

UGATE1afA嘉泰姆

High-side Gate Driver Output for channel 1. Connect this pin to the gate of high-side MOSFET.
afA嘉泰姆

This pin is monitored by the adaptive shoot-through protection circuitry to determine whenafA嘉泰姆

 the high-side MOSFET has turned off.afA嘉泰姆

2afA嘉泰姆

BOOT1afA嘉泰姆

Bootstrap Supply for the floating high-side gate driver of channel 1. Connect the Bootstrap
afA嘉泰姆

capacitor between the BOOT1 pin and the PHASE1 pin to form a bootstrap circuit. The afA嘉泰姆

bootstrap capacitor provides the charge to turn on the high-side MOSFET. Typical values for CBOOT ranged from 0.1μF to 1μF. Ensure that CBOOT is placed near the IC.afA嘉泰姆

3afA嘉泰姆

5VCCafA嘉泰姆

Internal Regulator Output. This is the output pin of the linear regulator, which is converting power from VCC and provides output current up to 20mA minimums for internal bias and external usage.afA嘉泰姆

4afA嘉泰姆

AGNDafA嘉泰姆

Signal Ground for the IC. All voltage levels are measured with respect to this pin. Tie this pin to the ground island/plane through the lowest impedance connection available.afA嘉泰姆

5afA嘉泰姆

MODEafA嘉泰姆

Operation Phase Selection Input. Pulling this pin lower than 0.64V sets two-phase operation with both channels enabled. Pulling this pin higher than 0.8V sets single-phase operation with the channel 2 disabled. Once operating in single-phase mode, the operation mode is latched. It is required to toggle SS, REFIN/EN, or 5VCC pin to reset the IC.afA嘉泰姆

6afA嘉泰姆

CSP1afA嘉泰姆

Positive Input of current sensing Amplifier for channel 1. This pin combined with CSN1 senses the inductor current through an RC network.afA嘉泰姆

7afA嘉泰姆

CSN1afA嘉泰姆

Negative Input of current sensing amplifier for channel 1. This pin combined with CSP1 senses the inductor current through an RC network.afA嘉泰姆

8afA嘉泰姆

CSN2afA嘉泰姆

Negative Input of current sensing amplifier for channel 2. This pin combined with CSP2 senses the inductor current through an RC network.afA嘉泰姆

9afA嘉泰姆

CSP2afA嘉泰姆

Positive Input of current sensing Amplifier for Channel 2. This pin combined with CSN2 senses the inductor current through an RC network.afA嘉泰姆


afA嘉泰姆

PINafA嘉泰姆

FUNCTIONafA嘉泰姆

NO.afA嘉泰姆

NAMEafA嘉泰姆

10afA嘉泰姆

DROOPafA嘉泰姆

Load Line (droop) Setting. Connect a resistor between this pin and AGND to set the droop. A
sourcing current, proportional to output current is present on the DROOP pin. The droop scale
factor is set by the resistors (connected with CSP1, CSP2, and DROOP), resistance of the output
inductors, and the internal voltage divider with the ratio of 5%.afA嘉泰姆

11afA嘉泰姆

RTafA嘉泰姆

Operating Frequency Setting. The three-level input pin sets the operating frequency for each
channel.afA嘉泰姆

RTafA嘉泰姆

Operating Frequency (kHz)afA嘉泰姆

GNDafA嘉泰姆

150afA嘉泰姆

FloatingafA嘉泰姆

300afA嘉泰姆

5VCCafA嘉泰姆

400afA嘉泰姆

12afA嘉泰姆

COMPafA嘉泰姆

Error Amplifier Output. Connect the compensation network between COMP, FB, and VOUT for Type
2 or Type 3 feedback compensation.afA嘉泰姆

13afA嘉泰姆

FBafA嘉泰姆

Feedback Voltage. This pin is the inverting input to the error comparator. A resistor divider from
the output to the AGND is used to set the regulation voltage.afA嘉泰姆

14afA嘉泰姆

SSafA嘉泰姆

Soft-start Current Output. Connect a capacitor from this pin to the AGND to set the soft-start
interval. Pulling the voltage on this pin below 0.5V causes COMP to pull low and then shuts off the
output.afA嘉泰姆

15afA嘉泰姆

REFIN/ENafA嘉泰姆

External Reference and Enable Input. The IC uses the voltage (VREFIN/EN) as reference voltage of
the converter with soft-start control. If this pin is driven by an external voltage ranged from 0.4V to
2V. The IC is disabled if the voltage is below 0.4V (typical). If external reference is not available,
then connect this pin to 5VCC for internal 0.6V reference.afA嘉泰姆

16afA嘉泰姆

REFOUT/PO
KafA嘉泰姆

Power-OK and 1.5V Reference Output. This pin is a reference output used to indicate the status
of the voltages on SS pin and FB pin. REFOUT/POK provides 1.5V reference if VFB> 87.5% of
reference (VR).afA嘉泰姆

17afA嘉泰姆

BOOT2afA嘉泰姆

Bootstrap Supply for the floating high-side gate driver of channel 2. Connect the Bootstrap
capacitor between the BOOT2 pin and the PHASE2 pin to form a bootstrap circuit. The bootstrap
capacitor provides the charge to turn on the high-side MOSFET. Typical values for CBOOT range
from 0.1μF to 1μF. Ensure that CBOOT is placed near the IC.afA嘉泰姆

18afA嘉泰姆

UGATE2afA嘉泰姆

High-side Gate Driver Output for Channel 2. Connect this pin to the gate of high-side MOSFET.
This pin is monitored by the adaptive shoot-through protection circuitry to determine when the
high-side MOSFET has turned off.afA嘉泰姆

19afA嘉泰姆

PHASE2afA嘉泰姆

Switch Node for Channel 2. Connect this pin to the source of high-side MOSFET and the drain of
the low-side MOSFET. This pin is used as sink for UGATE2 driver. This pin is also monitored by
the adaptive shoot-through protection circuitry to determine when the high-side MOSFET has
turned off. An Schottky diode between this pin and the ground is recommended to reduce
negative transient voltage that is common in a power supply system.afA嘉泰姆

20afA嘉泰姆

LGATE2afA嘉泰姆

Low-side Gate Driver Output for Channel 2. Connect this pin to the gate of low-side MOSFET.
This pin is monitored by the adaptive shoot-through protection circuitry to determine when the
low-side MOSFET has turned off.afA嘉泰姆

21afA嘉泰姆

VCCDRVafA嘉泰姆

Drive for External Linear Regulator. This pin is the drive output for the external linear regulator.
Connect this pin to base/gate of NPN/NMOS transistor as the pass element.afA嘉泰姆

22afA嘉泰姆

VCCafA嘉泰姆

Supply Voltage. This pin along with VCCDRV pin and external pass element provides 8.5V
regulated bias supply, low-side gate drivers, and the bootstrap circuit for high-side drivers. This pin
can receive a well-decoupled 8V~13.2V supply voltage alone if the VCCDRV is left open. Ensure
that this pin is bypassed by a ceramic capacitor next to the pin.afA嘉泰姆

23afA嘉泰姆

LGATE1afA嘉泰姆

Low-side Gate Driver Output for Channel 1. Connect this pin to the gate of low-side MOSFET.
This pin is monitored by the adaptive shoot-through protection circuitry to determine when the
low-side MOSFET has turned off.afA嘉泰姆

PINafA嘉泰姆

FUNCTIONafA嘉泰姆

NO.afA嘉泰姆

NAMEafA嘉泰姆

24afA嘉泰姆

PHASE1afA嘉泰姆

Switch Node for Channel 1. Connect this pin to the source of high-side MOSFET and the drain of the low-side MOSFET. This pin is used as sink for UGATT1 driver. This pin is also monitored by the adaptive shoot-through protection circuitry to determine when the high-side MOSFET has turned off. An Schottky diode between this pin and the ground is recommended to reduce negative transient voltage, which is common in a power supply system.afA嘉泰姆

25afA嘉泰姆

PGNDafA嘉泰姆

Power Ground for the low-side gate drivers. Connect this pin to the source of low-side MOSFETs. This pin is used as sink for LGATE1 and LGATE2 drivers.afA嘉泰姆

六.电路原理图</span>afA嘉泰姆


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2afA嘉泰姆

1afA嘉泰姆

40afA嘉泰姆

4.5afA嘉泰姆

13.2afA嘉泰姆

0.6afA嘉泰姆

5~12afA嘉泰姆

4000afA嘉泰姆

CXSD6295afA嘉泰姆

SOP8PafA嘉泰姆

TDFN3x3-10afA嘉泰姆

VMafA嘉泰姆

1afA嘉泰姆

1afA嘉泰姆

20afA嘉泰姆

3afA嘉泰姆

13.2afA嘉泰姆

0.8afA嘉泰姆

5~12afA嘉泰姆

2500afA嘉泰姆

CXSD6296A|B|C|DafA嘉泰姆

SOP8PafA嘉泰姆

VMafA嘉泰姆

1afA嘉泰姆

1afA嘉泰姆

25afA嘉泰姆

3afA嘉泰姆

13.2afA嘉泰姆

0.6|0.8afA嘉泰姆

5~12afA嘉泰姆

1200afA嘉泰姆

CXSD6297afA嘉泰姆

TDFN3x3-10afA嘉泰姆

VMafA嘉泰姆

1afA嘉泰姆

1afA嘉泰姆

25afA嘉泰姆

4afA嘉泰姆

13.2afA嘉泰姆

0.8afA嘉泰姆

5~12afA嘉泰姆

2000afA嘉泰姆

CXSD6298afA嘉泰姆

TDFN3x3-10afA嘉泰姆

COTafA嘉泰姆

1afA嘉泰姆

1afA嘉泰姆

25afA嘉泰姆

4.5afA嘉泰姆

25afA嘉泰姆

0.6afA嘉泰姆

5~12afA嘉泰姆

80afA嘉泰姆

CXSD6299|AafA嘉泰姆

SOP-8PafA嘉泰姆

VMafA嘉泰姆

1afA嘉泰姆

1afA嘉泰姆

25afA嘉泰姆

4.5afA嘉泰姆

13.2afA嘉泰姆

0.8afA嘉泰姆

5~12afA嘉泰姆

16000afA嘉泰姆

CXSD62100afA嘉泰姆

TQFN3x3-10afA嘉泰姆

VMafA嘉泰姆

1afA嘉泰姆

1afA嘉泰姆

25afA嘉泰姆

4.5afA嘉泰姆

13.2afA嘉泰姆

0.6afA嘉泰姆

5~12afA嘉泰姆

2500afA嘉泰姆

CXSD62101|LafA嘉泰姆

TDFN3x3-10afA嘉泰姆

COTafA嘉泰姆

1afA嘉泰姆

1afA嘉泰姆

30afA嘉泰姆

3afA嘉泰姆

25afA嘉泰姆

0.8afA嘉泰姆

5~12afA嘉泰姆

2000afA嘉泰姆

CXSD62102afA嘉泰姆

TQFN3x3-16afA嘉泰姆

COTafA嘉泰姆

1afA嘉泰姆

1afA嘉泰姆

30afA嘉泰姆

1.8afA嘉泰姆

28afA嘉泰姆

0.6afA嘉泰姆

5afA嘉泰姆

600afA嘉泰姆

CXSD62102AafA嘉泰姆

TQFN 3x3 16afA嘉泰姆

COTafA嘉泰姆

1afA嘉泰姆

1afA嘉泰姆

30afA嘉泰姆

1.8afA嘉泰姆

28afA嘉泰姆

0.6afA嘉泰姆

5afA嘉泰姆

600afA嘉泰姆

CXSD62103afA嘉泰姆

QFN4x4-24afA嘉泰姆

VMafA嘉泰姆

2afA嘉泰姆

1afA嘉泰姆

50afA嘉泰姆

4.5afA嘉泰姆

13.2afA嘉泰姆

0.6afA嘉泰姆

5~12afA嘉泰姆

5000afA嘉泰姆

CXSD62104afA嘉泰姆

TQFN4x4-24afA嘉泰姆

COTafA嘉泰姆

1afA嘉泰姆

2afA嘉泰姆

15afA嘉泰姆

6afA嘉泰姆

25afA嘉泰姆

2afA嘉泰姆

NafA嘉泰姆

550afA嘉泰姆

CXSD62105afA嘉泰姆

TQFN4x4-24afA嘉泰姆

COTafA嘉泰姆

1afA嘉泰姆

2afA嘉泰姆

15afA嘉泰姆

6afA嘉泰姆

25afA嘉泰姆

2afA嘉泰姆

NafA嘉泰姆

550afA嘉泰姆

CXSD62106|AafA嘉泰姆

TQFN4x4-4afA嘉泰姆

TQFN3x3-20afA嘉泰姆

COTafA嘉泰姆

1afA嘉泰姆

2afA嘉泰姆

20afA嘉泰姆

3afA嘉泰姆

28afA嘉泰姆

0.75afA嘉泰姆

5afA嘉泰姆

800afA嘉泰姆

CXSD62107afA嘉泰姆

TQFN3x3-16afA嘉泰姆

COTafA嘉泰姆

1afA嘉泰姆

1afA嘉泰姆

20afA嘉泰姆

1.8afA嘉泰姆

28afA嘉泰姆

0.75afA嘉泰姆

5afA嘉泰姆

400afA嘉泰姆

CXSD62108afA嘉泰姆

QFN3.5x3.5-14afA嘉泰姆

TQFN3x3-16afA嘉泰姆

COTafA嘉泰姆

1afA嘉泰姆

1afA嘉泰姆

20afA嘉泰姆

1.8afA嘉泰姆

28afA嘉泰姆

0.75afA嘉泰姆

5afA嘉泰姆

400afA嘉泰姆

CXSD62109afA嘉泰姆

TQFN3x3-16afA嘉泰姆

COTafA嘉泰姆

1afA嘉泰姆

2afA嘉泰姆

20afA嘉泰姆

1.8afA嘉泰姆

28afA嘉泰姆

0.75afA嘉泰姆

5afA嘉泰姆

400afA嘉泰姆

CXSD62110afA嘉泰姆

QFN3x3-20afA嘉泰姆

TQFN3x3-16afA嘉泰姆

COTafA嘉泰姆

1afA嘉泰姆

2afA嘉泰姆

20afA嘉泰姆

3afA嘉泰姆

28afA嘉泰姆

1.8|1.5|0.5afA嘉泰姆

5afA嘉泰姆

740afA嘉泰姆

CXSD62111afA嘉泰姆

TQFN4x4-24afA嘉泰姆

|QFN3x3-20afA嘉泰姆

CMafA嘉泰姆

1afA嘉泰姆

2afA嘉泰姆

15afA嘉泰姆

5afA嘉泰姆

28afA嘉泰姆

0.5afA嘉泰姆

NafA嘉泰姆

3000afA嘉泰姆

CXSD62112afA嘉泰姆

TDFN3x3-10afA嘉泰姆

COTafA嘉泰姆

1afA嘉泰姆

1afA嘉泰姆

20afA嘉泰姆

1.8afA嘉泰姆

28afA嘉泰姆

0.5afA嘉泰姆

5afA嘉泰姆

250afA嘉泰姆

CXSD62113|CafA嘉泰姆

TQFN3x3-20afA嘉泰姆

COTafA嘉泰姆

1afA嘉泰姆

2afA嘉泰姆

15afA嘉泰姆

6afA嘉泰姆

25afA嘉泰姆

2afA嘉泰姆

NafA嘉泰姆

550afA嘉泰姆

CXSD62113EafA嘉泰姆

TQFN 3x3 20afA嘉泰姆

COTafA嘉泰姆

2afA嘉泰姆

2afA嘉泰姆

11afA嘉泰姆

6afA嘉泰姆

25afA嘉泰姆

2afA嘉泰姆

NafA嘉泰姆

550afA嘉泰姆

CXSD62114afA嘉泰姆

TQFN3x3-20afA嘉泰姆

COTafA嘉泰姆

2afA嘉泰姆

2afA嘉泰姆

11afA嘉泰姆

5.5afA嘉泰姆

25afA嘉泰姆

2afA嘉泰姆

NafA嘉泰姆

280afA嘉泰姆

CXSD62115afA嘉泰姆

QFN4x4-24afA嘉泰姆

VMafA嘉泰姆

2afA嘉泰姆

1afA嘉泰姆

60afA嘉泰姆

3.1afA嘉泰姆

13.2afA嘉泰姆

0.85afA嘉泰姆

12afA嘉泰姆

5000afA嘉泰姆

CXSD62116A|B|CafA嘉泰姆

SOP-8PafA嘉泰姆

VMafA嘉泰姆

1afA嘉泰姆

1afA嘉泰姆

20afA嘉泰姆

2.9afA嘉泰姆

13.2afA嘉泰姆

0.8afA嘉泰姆

12afA嘉泰姆

16000afA嘉泰姆

CXSD62117afA嘉泰姆

SOP-20afA嘉泰姆

VMafA嘉泰姆

2afA嘉泰姆

2afA嘉泰姆

30afA嘉泰姆

10afA嘉泰姆

13.2afA嘉泰姆

1afA嘉泰姆

12afA嘉泰姆

5000afA嘉泰姆

CXSD62118afA嘉泰姆

TDFN3x3-10afA嘉泰姆

COTafA嘉泰姆

1afA嘉泰姆

1afA嘉泰姆

25afA嘉泰姆

1.8afA嘉泰姆

28afA嘉泰姆

0.7afA嘉泰姆

5afA嘉泰姆

250afA嘉泰姆

CXSD62119afA嘉泰姆

TQFN3x3-20afA嘉泰姆

COTafA嘉泰姆

2afA嘉泰姆

1afA嘉泰姆

40afA嘉泰姆

1.8afA嘉泰姆

25afA嘉泰姆

REFIN SettingafA嘉泰姆

5afA嘉泰姆

700afA嘉泰姆

CXSD62120afA嘉泰姆

QFN 3x3 20afA嘉泰姆

TQFN 3x3 16afA嘉泰姆

COTafA嘉泰姆

1afA嘉泰姆

2afA嘉泰姆

20afA嘉泰姆

3afA嘉泰姆

28afA嘉泰姆

1.8|1.5 1.35|1.2 0.5afA嘉泰姆

5afA嘉泰姆

800afA嘉泰姆

CXSD62121AafA嘉泰姆

TQFN3x3 20afA嘉泰姆

COTafA嘉泰姆

1afA嘉泰姆

2afA嘉泰姆

15afA嘉泰姆

3afA嘉泰姆

28afA嘉泰姆

0.75afA嘉泰姆

5afA嘉泰姆

220afA嘉泰姆

CXSD62121BafA嘉泰姆

TQFN3x3 20afA嘉泰姆

COTafA嘉泰姆

1afA嘉泰姆

2afA嘉泰姆

15afA嘉泰姆

3afA嘉泰姆

28afA嘉泰姆

0.75afA嘉泰姆

5afA嘉泰姆

220afA嘉泰姆

CXSD62121afA嘉泰姆

TQFN3x3-20afA嘉泰姆

COTafA嘉泰姆

1afA嘉泰姆

2afA嘉泰姆

20afA嘉泰姆

3afA嘉泰姆

28afA嘉泰姆

0.75afA嘉泰姆

5afA嘉泰姆

180      afA嘉泰姆

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