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:702 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dkb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dkb嘉泰姆

,产品概述(General Description)    dkb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)dkb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)dkb嘉泰姆


Graphics Card GPU Core Power Supplydkb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 dkb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>dkb嘉泰姆

 QQ截图20160419174301.jpgdkb嘉泰姆

五,产品封装图 (Package)

FUNCTION
dkb嘉泰姆

PINdkb嘉泰姆

FUNCTIONdkb嘉泰姆

NO.dkb嘉泰姆

NAMEdkb嘉泰姆

1dkb嘉泰姆

UGATE1dkb嘉泰姆

High-side Gate Driver Output for channel 1. Connect this pin to the gate of high-side MOSFET.
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This pin is monitored by the adaptive shoot-through protection circuitry to determine whendkb嘉泰姆

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

2dkb嘉泰姆

BOOT1dkb嘉泰姆

Bootstrap Supply for the floating high-side gate driver of channel 1. Connect the Bootstrap
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capacitor between the BOOT1 pin and the PHASE1 pin to form a bootstrap circuit. The dkb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.dkb嘉泰姆

3dkb嘉泰姆

5VCCdkb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.dkb嘉泰姆

4dkb嘉泰姆

AGNDdkb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.dkb嘉泰姆

5dkb嘉泰姆

MODEdkb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.dkb嘉泰姆

6dkb嘉泰姆

CSP1dkb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.dkb嘉泰姆

7dkb嘉泰姆

CSN1dkb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.dkb嘉泰姆

8dkb嘉泰姆

CSN2dkb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.dkb嘉泰姆

9dkb嘉泰姆

CSP2dkb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.dkb嘉泰姆


dkb嘉泰姆

PINdkb嘉泰姆

FUNCTIONdkb嘉泰姆

NO.dkb嘉泰姆

NAMEdkb嘉泰姆

10dkb嘉泰姆

DROOPdkb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%.dkb嘉泰姆

11dkb嘉泰姆

RTdkb嘉泰姆

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

RTdkb嘉泰姆

Operating Frequency (kHz)dkb嘉泰姆

GNDdkb嘉泰姆

150dkb嘉泰姆

Floatingdkb嘉泰姆

300dkb嘉泰姆

5VCCdkb嘉泰姆

400dkb嘉泰姆

12dkb嘉泰姆

COMPdkb嘉泰姆

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

13dkb嘉泰姆

FBdkb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.dkb嘉泰姆

14dkb嘉泰姆

SSdkb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.dkb嘉泰姆

15dkb嘉泰姆

REFIN/ENdkb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.dkb嘉泰姆

16dkb嘉泰姆

REFOUT/PO
Kdkb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).dkb嘉泰姆

17dkb嘉泰姆

BOOT2dkb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.dkb嘉泰姆

18dkb嘉泰姆

UGATE2dkb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.dkb嘉泰姆

19dkb嘉泰姆

PHASE2dkb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.dkb嘉泰姆

20dkb嘉泰姆

LGATE2dkb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.dkb嘉泰姆

21dkb嘉泰姆

VCCDRVdkb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.dkb嘉泰姆

22dkb嘉泰姆

VCCdkb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.dkb嘉泰姆

23dkb嘉泰姆

LGATE1dkb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.dkb嘉泰姆

PINdkb嘉泰姆

FUNCTIONdkb嘉泰姆

NO.dkb嘉泰姆

NAMEdkb嘉泰姆

24dkb嘉泰姆

PHASE1dkb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.dkb嘉泰姆

25dkb嘉泰姆

PGNDdkb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.dkb嘉泰姆

六.电路原理图</span>dkb嘉泰姆


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40dkb嘉泰姆

4.5dkb嘉泰姆

13.2dkb嘉泰姆

0.6dkb嘉泰姆

5~12dkb嘉泰姆

4000dkb嘉泰姆

CXSD6295dkb嘉泰姆

SOP8Pdkb嘉泰姆

TDFN3x3-10dkb嘉泰姆

VMdkb嘉泰姆

1dkb嘉泰姆

1dkb嘉泰姆

20dkb嘉泰姆

3dkb嘉泰姆

13.2dkb嘉泰姆

0.8dkb嘉泰姆

5~12dkb嘉泰姆

2500dkb嘉泰姆

CXSD6296A|B|C|Ddkb嘉泰姆

SOP8Pdkb嘉泰姆

VMdkb嘉泰姆

1dkb嘉泰姆

1dkb嘉泰姆

25dkb嘉泰姆

3dkb嘉泰姆

13.2dkb嘉泰姆

0.6|0.8dkb嘉泰姆

5~12dkb嘉泰姆

1200dkb嘉泰姆

CXSD6297dkb嘉泰姆

TDFN3x3-10dkb嘉泰姆

VMdkb嘉泰姆

1dkb嘉泰姆

1dkb嘉泰姆

25dkb嘉泰姆

4dkb嘉泰姆

13.2dkb嘉泰姆

0.8dkb嘉泰姆

5~12dkb嘉泰姆

2000dkb嘉泰姆

CXSD6298dkb嘉泰姆

TDFN3x3-10dkb嘉泰姆

COTdkb嘉泰姆

1dkb嘉泰姆

1dkb嘉泰姆

25dkb嘉泰姆

4.5dkb嘉泰姆

25dkb嘉泰姆

0.6dkb嘉泰姆

5~12dkb嘉泰姆

80dkb嘉泰姆

CXSD6299|Adkb嘉泰姆

SOP-8Pdkb嘉泰姆

VMdkb嘉泰姆

1dkb嘉泰姆

1dkb嘉泰姆

25dkb嘉泰姆

4.5dkb嘉泰姆

13.2dkb嘉泰姆

0.8dkb嘉泰姆

5~12dkb嘉泰姆

16000dkb嘉泰姆

CXSD62100dkb嘉泰姆

TQFN3x3-10dkb嘉泰姆

VMdkb嘉泰姆

1dkb嘉泰姆

1dkb嘉泰姆

25dkb嘉泰姆

4.5dkb嘉泰姆

13.2dkb嘉泰姆

0.6dkb嘉泰姆

5~12dkb嘉泰姆

2500dkb嘉泰姆

CXSD62101|Ldkb嘉泰姆

TDFN3x3-10dkb嘉泰姆

COTdkb嘉泰姆

1dkb嘉泰姆

1dkb嘉泰姆

30dkb嘉泰姆

3dkb嘉泰姆

25dkb嘉泰姆

0.8dkb嘉泰姆

5~12dkb嘉泰姆

2000dkb嘉泰姆

CXSD62102dkb嘉泰姆

TQFN3x3-16dkb嘉泰姆

COTdkb嘉泰姆

1dkb嘉泰姆

1dkb嘉泰姆

30dkb嘉泰姆

1.8dkb嘉泰姆

28dkb嘉泰姆

0.6dkb嘉泰姆

5dkb嘉泰姆

600dkb嘉泰姆

CXSD62102Adkb嘉泰姆

TQFN 3x3 16dkb嘉泰姆

COTdkb嘉泰姆

1dkb嘉泰姆

1dkb嘉泰姆

30dkb嘉泰姆

1.8dkb嘉泰姆

28dkb嘉泰姆

0.6dkb嘉泰姆

5dkb嘉泰姆

600dkb嘉泰姆

CXSD62103dkb嘉泰姆

QFN4x4-24dkb嘉泰姆

VMdkb嘉泰姆

2dkb嘉泰姆

1dkb嘉泰姆

50dkb嘉泰姆

4.5dkb嘉泰姆

13.2dkb嘉泰姆

0.6dkb嘉泰姆

5~12dkb嘉泰姆

5000dkb嘉泰姆

CXSD62104dkb嘉泰姆

TQFN4x4-24dkb嘉泰姆

COTdkb嘉泰姆

1dkb嘉泰姆

2dkb嘉泰姆

15dkb嘉泰姆

6dkb嘉泰姆

25dkb嘉泰姆

2dkb嘉泰姆

Ndkb嘉泰姆

550dkb嘉泰姆

CXSD62105dkb嘉泰姆

TQFN4x4-24dkb嘉泰姆

COTdkb嘉泰姆

1dkb嘉泰姆

2dkb嘉泰姆

15dkb嘉泰姆

6dkb嘉泰姆

25dkb嘉泰姆

2dkb嘉泰姆

Ndkb嘉泰姆

550dkb嘉泰姆

CXSD62106|Adkb嘉泰姆

TQFN4x4-4dkb嘉泰姆

TQFN3x3-20dkb嘉泰姆

COTdkb嘉泰姆

1dkb嘉泰姆

2dkb嘉泰姆

20dkb嘉泰姆

3dkb嘉泰姆

28dkb嘉泰姆

0.75dkb嘉泰姆

5dkb嘉泰姆

800dkb嘉泰姆

CXSD62107dkb嘉泰姆

TQFN3x3-16dkb嘉泰姆

COTdkb嘉泰姆

1dkb嘉泰姆

1dkb嘉泰姆

20dkb嘉泰姆

1.8dkb嘉泰姆

28dkb嘉泰姆

0.75dkb嘉泰姆

5dkb嘉泰姆

400dkb嘉泰姆

CXSD62108dkb嘉泰姆

QFN3.5x3.5-14dkb嘉泰姆

TQFN3x3-16dkb嘉泰姆

COTdkb嘉泰姆

1dkb嘉泰姆

1dkb嘉泰姆

20dkb嘉泰姆

1.8dkb嘉泰姆

28dkb嘉泰姆

0.75dkb嘉泰姆

5dkb嘉泰姆

400dkb嘉泰姆

CXSD62109dkb嘉泰姆

TQFN3x3-16dkb嘉泰姆

COTdkb嘉泰姆

1dkb嘉泰姆

2dkb嘉泰姆

20dkb嘉泰姆

1.8dkb嘉泰姆

28dkb嘉泰姆

0.75dkb嘉泰姆

5dkb嘉泰姆

400dkb嘉泰姆

CXSD62110dkb嘉泰姆

QFN3x3-20dkb嘉泰姆

TQFN3x3-16dkb嘉泰姆

COTdkb嘉泰姆

1dkb嘉泰姆

2dkb嘉泰姆

20dkb嘉泰姆

3dkb嘉泰姆

28dkb嘉泰姆

1.8|1.5|0.5dkb嘉泰姆

5dkb嘉泰姆

740dkb嘉泰姆

CXSD62111dkb嘉泰姆

TQFN4x4-24dkb嘉泰姆

|QFN3x3-20dkb嘉泰姆

CMdkb嘉泰姆

1dkb嘉泰姆

2dkb嘉泰姆

15dkb嘉泰姆

5dkb嘉泰姆

28dkb嘉泰姆

0.5dkb嘉泰姆

Ndkb嘉泰姆

3000dkb嘉泰姆

CXSD62112dkb嘉泰姆

TDFN3x3-10dkb嘉泰姆

COTdkb嘉泰姆

1dkb嘉泰姆

1dkb嘉泰姆

20dkb嘉泰姆

1.8dkb嘉泰姆

28dkb嘉泰姆

0.5dkb嘉泰姆

5dkb嘉泰姆

250dkb嘉泰姆

CXSD62113|Cdkb嘉泰姆

TQFN3x3-20dkb嘉泰姆

COTdkb嘉泰姆

1dkb嘉泰姆

2dkb嘉泰姆

15dkb嘉泰姆

6dkb嘉泰姆

25dkb嘉泰姆

2dkb嘉泰姆

Ndkb嘉泰姆

550dkb嘉泰姆

CXSD62113Edkb嘉泰姆

TQFN 3x3 20dkb嘉泰姆

COTdkb嘉泰姆

2dkb嘉泰姆

2dkb嘉泰姆

11dkb嘉泰姆

6dkb嘉泰姆

25dkb嘉泰姆

2dkb嘉泰姆

Ndkb嘉泰姆

550dkb嘉泰姆

CXSD62114dkb嘉泰姆

TQFN3x3-20dkb嘉泰姆

COTdkb嘉泰姆

2dkb嘉泰姆

2dkb嘉泰姆

11dkb嘉泰姆

5.5dkb嘉泰姆

25dkb嘉泰姆

2dkb嘉泰姆

Ndkb嘉泰姆

280dkb嘉泰姆

CXSD62115dkb嘉泰姆

QFN4x4-24dkb嘉泰姆

VMdkb嘉泰姆

2dkb嘉泰姆

1dkb嘉泰姆

60dkb嘉泰姆

3.1dkb嘉泰姆

13.2dkb嘉泰姆

0.85dkb嘉泰姆

12dkb嘉泰姆

5000dkb嘉泰姆

CXSD62116A|B|Cdkb嘉泰姆

SOP-8Pdkb嘉泰姆

VMdkb嘉泰姆

1dkb嘉泰姆

1dkb嘉泰姆

20dkb嘉泰姆

2.9dkb嘉泰姆

13.2dkb嘉泰姆

0.8dkb嘉泰姆

12dkb嘉泰姆

16000dkb嘉泰姆

CXSD62117dkb嘉泰姆

SOP-20dkb嘉泰姆

VMdkb嘉泰姆

2dkb嘉泰姆

2dkb嘉泰姆

30dkb嘉泰姆

10dkb嘉泰姆

13.2dkb嘉泰姆

1dkb嘉泰姆

12dkb嘉泰姆

5000dkb嘉泰姆

CXSD62118dkb嘉泰姆

TDFN3x3-10dkb嘉泰姆

COTdkb嘉泰姆

1dkb嘉泰姆

1dkb嘉泰姆

25dkb嘉泰姆

1.8dkb嘉泰姆

28dkb嘉泰姆

0.7dkb嘉泰姆

5dkb嘉泰姆

250dkb嘉泰姆

CXSD62119dkb嘉泰姆

TQFN3x3-20dkb嘉泰姆

COTdkb嘉泰姆

2dkb嘉泰姆

1dkb嘉泰姆

40dkb嘉泰姆

1.8dkb嘉泰姆

25dkb嘉泰姆

REFIN Settingdkb嘉泰姆

5dkb嘉泰姆

700dkb嘉泰姆

CXSD62120dkb嘉泰姆

QFN 3x3 20dkb嘉泰姆

TQFN 3x3 16dkb嘉泰姆

COTdkb嘉泰姆

1dkb嘉泰姆

2dkb嘉泰姆

20dkb嘉泰姆

3dkb嘉泰姆

28dkb嘉泰姆

1.8|1.5 1.35|1.2 0.5dkb嘉泰姆

5dkb嘉泰姆

800dkb嘉泰姆

CXSD62121Adkb嘉泰姆

TQFN3x3 20dkb嘉泰姆

COTdkb嘉泰姆

1dkb嘉泰姆

2dkb嘉泰姆

15dkb嘉泰姆

3dkb嘉泰姆

28dkb嘉泰姆

0.75dkb嘉泰姆

5dkb嘉泰姆

220dkb嘉泰姆

CXSD62121Bdkb嘉泰姆

TQFN3x3 20dkb嘉泰姆

COTdkb嘉泰姆

1dkb嘉泰姆

2dkb嘉泰姆

15dkb嘉泰姆

3dkb嘉泰姆

28dkb嘉泰姆

0.75dkb嘉泰姆

5dkb嘉泰姆

220dkb嘉泰姆

CXSD62121dkb嘉泰姆

TQFN3x3-20dkb嘉泰姆

COTdkb嘉泰姆

1dkb嘉泰姆

2dkb嘉泰姆

20dkb嘉泰姆

3dkb嘉泰姆

28dkb嘉泰姆

0.75dkb嘉泰姆

5dkb嘉泰姆

180      dkb嘉泰姆

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