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:710 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wy2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wy2嘉泰姆

,产品概述(General Description)    wy2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)wy2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)wy2嘉泰姆


Graphics Card GPU Core Power Supplywy2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 wy2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>wy2嘉泰姆

 QQ截图20160419174301.jpgwy2嘉泰姆

五,产品封装图 (Package)

FUNCTION
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PINwy2嘉泰姆

FUNCTIONwy2嘉泰姆

NO.wy2嘉泰姆

NAMEwy2嘉泰姆

1wy2嘉泰姆

UGATE1wy2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 whenwy2嘉泰姆

 the high-side MOSFET has turned off.wy2嘉泰姆

2wy2嘉泰姆

BOOT1wy2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 wy2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.wy2嘉泰姆

3wy2嘉泰姆

5VCCwy2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.wy2嘉泰姆

4wy2嘉泰姆

AGNDwy2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.wy2嘉泰姆

5wy2嘉泰姆

MODEwy2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.wy2嘉泰姆

6wy2嘉泰姆

CSP1wy2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.wy2嘉泰姆

7wy2嘉泰姆

CSN1wy2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.wy2嘉泰姆

8wy2嘉泰姆

CSN2wy2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.wy2嘉泰姆

9wy2嘉泰姆

CSP2wy2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.wy2嘉泰姆


wy2嘉泰姆

PINwy2嘉泰姆

FUNCTIONwy2嘉泰姆

NO.wy2嘉泰姆

NAMEwy2嘉泰姆

10wy2嘉泰姆

DROOPwy2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%.wy2嘉泰姆

11wy2嘉泰姆

RTwy2嘉泰姆

Operating Frequency Setting. The three-level input pin sets the operating frequency for each
channel.wy2嘉泰姆

RTwy2嘉泰姆

Operating Frequency (kHz)wy2嘉泰姆

GNDwy2嘉泰姆

150wy2嘉泰姆

Floatingwy2嘉泰姆

300wy2嘉泰姆

5VCCwy2嘉泰姆

400wy2嘉泰姆

12wy2嘉泰姆

COMPwy2嘉泰姆

Error Amplifier Output. Connect the compensation network between COMP, FB, and VOUT for Type
2 or Type 3 feedback compensation.wy2嘉泰姆

13wy2嘉泰姆

FBwy2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.wy2嘉泰姆

14wy2嘉泰姆

SSwy2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.wy2嘉泰姆

15wy2嘉泰姆

REFIN/ENwy2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.wy2嘉泰姆

16wy2嘉泰姆

REFOUT/PO
Kwy2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).wy2嘉泰姆

17wy2嘉泰姆

BOOT2wy2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.wy2嘉泰姆

18wy2嘉泰姆

UGATE2wy2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.wy2嘉泰姆

19wy2嘉泰姆

PHASE2wy2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.wy2嘉泰姆

20wy2嘉泰姆

LGATE2wy2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.wy2嘉泰姆

21wy2嘉泰姆

VCCDRVwy2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.wy2嘉泰姆

22wy2嘉泰姆

VCCwy2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.wy2嘉泰姆

23wy2嘉泰姆

LGATE1wy2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.wy2嘉泰姆

PINwy2嘉泰姆

FUNCTIONwy2嘉泰姆

NO.wy2嘉泰姆

NAMEwy2嘉泰姆

24wy2嘉泰姆

PHASE1wy2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.wy2嘉泰姆

25wy2嘉泰姆

PGNDwy2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.wy2嘉泰姆

六.电路原理图</span>wy2嘉泰姆


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2wy2嘉泰姆

1wy2嘉泰姆

40wy2嘉泰姆

4.5wy2嘉泰姆

13.2wy2嘉泰姆

0.6wy2嘉泰姆

5~12wy2嘉泰姆

4000wy2嘉泰姆

CXSD6295wy2嘉泰姆

SOP8Pwy2嘉泰姆

TDFN3x3-10wy2嘉泰姆

VMwy2嘉泰姆

1wy2嘉泰姆

1wy2嘉泰姆

20wy2嘉泰姆

3wy2嘉泰姆

13.2wy2嘉泰姆

0.8wy2嘉泰姆

5~12wy2嘉泰姆

2500wy2嘉泰姆

CXSD6296A|B|C|Dwy2嘉泰姆

SOP8Pwy2嘉泰姆

VMwy2嘉泰姆

1wy2嘉泰姆

1wy2嘉泰姆

25wy2嘉泰姆

3wy2嘉泰姆

13.2wy2嘉泰姆

0.6|0.8wy2嘉泰姆

5~12wy2嘉泰姆

1200wy2嘉泰姆

CXSD6297wy2嘉泰姆

TDFN3x3-10wy2嘉泰姆

VMwy2嘉泰姆

1wy2嘉泰姆

1wy2嘉泰姆

25wy2嘉泰姆

4wy2嘉泰姆

13.2wy2嘉泰姆

0.8wy2嘉泰姆

5~12wy2嘉泰姆

2000wy2嘉泰姆

CXSD6298wy2嘉泰姆

TDFN3x3-10wy2嘉泰姆

COTwy2嘉泰姆

1wy2嘉泰姆

1wy2嘉泰姆

25wy2嘉泰姆

4.5wy2嘉泰姆

25wy2嘉泰姆

0.6wy2嘉泰姆

5~12wy2嘉泰姆

80wy2嘉泰姆

CXSD6299|Awy2嘉泰姆

SOP-8Pwy2嘉泰姆

VMwy2嘉泰姆

1wy2嘉泰姆

1wy2嘉泰姆

25wy2嘉泰姆

4.5wy2嘉泰姆

13.2wy2嘉泰姆

0.8wy2嘉泰姆

5~12wy2嘉泰姆

16000wy2嘉泰姆

CXSD62100wy2嘉泰姆

TQFN3x3-10wy2嘉泰姆

VMwy2嘉泰姆

1wy2嘉泰姆

1wy2嘉泰姆

25wy2嘉泰姆

4.5wy2嘉泰姆

13.2wy2嘉泰姆

0.6wy2嘉泰姆

5~12wy2嘉泰姆

2500wy2嘉泰姆

CXSD62101|Lwy2嘉泰姆

TDFN3x3-10wy2嘉泰姆

COTwy2嘉泰姆

1wy2嘉泰姆

1wy2嘉泰姆

30wy2嘉泰姆

3wy2嘉泰姆

25wy2嘉泰姆

0.8wy2嘉泰姆

5~12wy2嘉泰姆

2000wy2嘉泰姆

CXSD62102wy2嘉泰姆

TQFN3x3-16wy2嘉泰姆

COTwy2嘉泰姆

1wy2嘉泰姆

1wy2嘉泰姆

30wy2嘉泰姆

1.8wy2嘉泰姆

28wy2嘉泰姆

0.6wy2嘉泰姆

5wy2嘉泰姆

600wy2嘉泰姆

CXSD62102Awy2嘉泰姆

TQFN 3x3 16wy2嘉泰姆

COTwy2嘉泰姆

1wy2嘉泰姆

1wy2嘉泰姆

30wy2嘉泰姆

1.8wy2嘉泰姆

28wy2嘉泰姆

0.6wy2嘉泰姆

5wy2嘉泰姆

600wy2嘉泰姆

CXSD62103wy2嘉泰姆

QFN4x4-24wy2嘉泰姆

VMwy2嘉泰姆

2wy2嘉泰姆

1wy2嘉泰姆

50wy2嘉泰姆

4.5wy2嘉泰姆

13.2wy2嘉泰姆

0.6wy2嘉泰姆

5~12wy2嘉泰姆

5000wy2嘉泰姆

CXSD62104wy2嘉泰姆

TQFN4x4-24wy2嘉泰姆

COTwy2嘉泰姆

1wy2嘉泰姆

2wy2嘉泰姆

15wy2嘉泰姆

6wy2嘉泰姆

25wy2嘉泰姆

2wy2嘉泰姆

Nwy2嘉泰姆

550wy2嘉泰姆

CXSD62105wy2嘉泰姆

TQFN4x4-24wy2嘉泰姆

COTwy2嘉泰姆

1wy2嘉泰姆

2wy2嘉泰姆

15wy2嘉泰姆

6wy2嘉泰姆

25wy2嘉泰姆

2wy2嘉泰姆

Nwy2嘉泰姆

550wy2嘉泰姆

CXSD62106|Awy2嘉泰姆

TQFN4x4-4wy2嘉泰姆

TQFN3x3-20wy2嘉泰姆

COTwy2嘉泰姆

1wy2嘉泰姆

2wy2嘉泰姆

20wy2嘉泰姆

3wy2嘉泰姆

28wy2嘉泰姆

0.75wy2嘉泰姆

5wy2嘉泰姆

800wy2嘉泰姆

CXSD62107wy2嘉泰姆

TQFN3x3-16wy2嘉泰姆

COTwy2嘉泰姆

1wy2嘉泰姆

1wy2嘉泰姆

20wy2嘉泰姆

1.8wy2嘉泰姆

28wy2嘉泰姆

0.75wy2嘉泰姆

5wy2嘉泰姆

400wy2嘉泰姆

CXSD62108wy2嘉泰姆

QFN3.5x3.5-14wy2嘉泰姆

TQFN3x3-16wy2嘉泰姆

COTwy2嘉泰姆

1wy2嘉泰姆

1wy2嘉泰姆

20wy2嘉泰姆

1.8wy2嘉泰姆

28wy2嘉泰姆

0.75wy2嘉泰姆

5wy2嘉泰姆

400wy2嘉泰姆

CXSD62109wy2嘉泰姆

TQFN3x3-16wy2嘉泰姆

COTwy2嘉泰姆

1wy2嘉泰姆

2wy2嘉泰姆

20wy2嘉泰姆

1.8wy2嘉泰姆

28wy2嘉泰姆

0.75wy2嘉泰姆

5wy2嘉泰姆

400wy2嘉泰姆

CXSD62110wy2嘉泰姆

QFN3x3-20wy2嘉泰姆

TQFN3x3-16wy2嘉泰姆

COTwy2嘉泰姆

1wy2嘉泰姆

2wy2嘉泰姆

20wy2嘉泰姆

3wy2嘉泰姆

28wy2嘉泰姆

1.8|1.5|0.5wy2嘉泰姆

5wy2嘉泰姆

740wy2嘉泰姆

CXSD62111wy2嘉泰姆

TQFN4x4-24wy2嘉泰姆

|QFN3x3-20wy2嘉泰姆

CMwy2嘉泰姆

1wy2嘉泰姆

2wy2嘉泰姆

15wy2嘉泰姆

5wy2嘉泰姆

28wy2嘉泰姆

0.5wy2嘉泰姆

Nwy2嘉泰姆

3000wy2嘉泰姆

CXSD62112wy2嘉泰姆

TDFN3x3-10wy2嘉泰姆

COTwy2嘉泰姆

1wy2嘉泰姆

1wy2嘉泰姆

20wy2嘉泰姆

1.8wy2嘉泰姆

28wy2嘉泰姆

0.5wy2嘉泰姆

5wy2嘉泰姆

250wy2嘉泰姆

CXSD62113|Cwy2嘉泰姆

TQFN3x3-20wy2嘉泰姆

COTwy2嘉泰姆

1wy2嘉泰姆

2wy2嘉泰姆

15wy2嘉泰姆

6wy2嘉泰姆

25wy2嘉泰姆

2wy2嘉泰姆

Nwy2嘉泰姆

550wy2嘉泰姆

CXSD62113Ewy2嘉泰姆

TQFN 3x3 20wy2嘉泰姆

COTwy2嘉泰姆

2wy2嘉泰姆

2wy2嘉泰姆

11wy2嘉泰姆

6wy2嘉泰姆

25wy2嘉泰姆

2wy2嘉泰姆

Nwy2嘉泰姆

550wy2嘉泰姆

CXSD62114wy2嘉泰姆

TQFN3x3-20wy2嘉泰姆

COTwy2嘉泰姆

2wy2嘉泰姆

2wy2嘉泰姆

11wy2嘉泰姆

5.5wy2嘉泰姆

25wy2嘉泰姆

2wy2嘉泰姆

Nwy2嘉泰姆

280wy2嘉泰姆

CXSD62115wy2嘉泰姆

QFN4x4-24wy2嘉泰姆

VMwy2嘉泰姆

2wy2嘉泰姆

1wy2嘉泰姆

60wy2嘉泰姆

3.1wy2嘉泰姆

13.2wy2嘉泰姆

0.85wy2嘉泰姆

12wy2嘉泰姆

5000wy2嘉泰姆

CXSD62116A|B|Cwy2嘉泰姆

SOP-8Pwy2嘉泰姆

VMwy2嘉泰姆

1wy2嘉泰姆

1wy2嘉泰姆

20wy2嘉泰姆

2.9wy2嘉泰姆

13.2wy2嘉泰姆

0.8wy2嘉泰姆

12wy2嘉泰姆

16000wy2嘉泰姆

CXSD62117wy2嘉泰姆

SOP-20wy2嘉泰姆

VMwy2嘉泰姆

2wy2嘉泰姆

2wy2嘉泰姆

30wy2嘉泰姆

10wy2嘉泰姆

13.2wy2嘉泰姆

1wy2嘉泰姆

12wy2嘉泰姆

5000wy2嘉泰姆

CXSD62118wy2嘉泰姆

TDFN3x3-10wy2嘉泰姆

COTwy2嘉泰姆

1wy2嘉泰姆

1wy2嘉泰姆

25wy2嘉泰姆

1.8wy2嘉泰姆

28wy2嘉泰姆

0.7wy2嘉泰姆

5wy2嘉泰姆

250wy2嘉泰姆

CXSD62119wy2嘉泰姆

TQFN3x3-20wy2嘉泰姆

COTwy2嘉泰姆

2wy2嘉泰姆

1wy2嘉泰姆

40wy2嘉泰姆

1.8wy2嘉泰姆

25wy2嘉泰姆

REFIN Settingwy2嘉泰姆

5wy2嘉泰姆

700wy2嘉泰姆

CXSD62120wy2嘉泰姆

QFN 3x3 20wy2嘉泰姆

TQFN 3x3 16wy2嘉泰姆

COTwy2嘉泰姆

1wy2嘉泰姆

2wy2嘉泰姆

20wy2嘉泰姆

3wy2嘉泰姆

28wy2嘉泰姆

1.8|1.5 1.35|1.2 0.5wy2嘉泰姆

5wy2嘉泰姆

800wy2嘉泰姆

CXSD62121Awy2嘉泰姆

TQFN3x3 20wy2嘉泰姆

COTwy2嘉泰姆

1wy2嘉泰姆

2wy2嘉泰姆

15wy2嘉泰姆

3wy2嘉泰姆

28wy2嘉泰姆

0.75wy2嘉泰姆

5wy2嘉泰姆

220wy2嘉泰姆

CXSD62121Bwy2嘉泰姆

TQFN3x3 20wy2嘉泰姆

COTwy2嘉泰姆

1wy2嘉泰姆

2wy2嘉泰姆

15wy2嘉泰姆

3wy2嘉泰姆

28wy2嘉泰姆

0.75wy2嘉泰姆

5wy2嘉泰姆

220wy2嘉泰姆

CXSD62121wy2嘉泰姆

TQFN3x3-20wy2嘉泰姆

COTwy2嘉泰姆

1wy2嘉泰姆

2wy2嘉泰姆

20wy2嘉泰姆

3wy2嘉泰姆

28wy2嘉泰姆

0.75wy2嘉泰姆

5wy2嘉泰姆

180      wy2嘉泰姆

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