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:714 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UQC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UQC嘉泰姆

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


Graphics Card GPU Core Power SupplyUQC嘉泰姆

Motherboard Chipset or DDR SDRAM Core PowerSupply
On-board High Power PWM Converter with Out-
UQC嘉泰姆

put Current up to 60A
四.下载产品资料PDF文档 UQC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>UQC嘉泰姆

 QQ截图20160419174301.jpgUQC嘉泰姆

五,产品封装图 (Package)

FUNCTION
UQC嘉泰姆

PINUQC嘉泰姆

FUNCTIONUQC嘉泰姆

NO.UQC嘉泰姆

NAMEUQC嘉泰姆

1UQC嘉泰姆

UGATE1UQC嘉泰姆

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

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

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

2UQC嘉泰姆

BOOT1UQC嘉泰姆

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

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

3UQC嘉泰姆

5VCCUQC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.UQC嘉泰姆

4UQC嘉泰姆

AGNDUQC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.UQC嘉泰姆

5UQC嘉泰姆

MODEUQC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.UQC嘉泰姆

6UQC嘉泰姆

CSP1UQC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.UQC嘉泰姆

7UQC嘉泰姆

CSN1UQC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.UQC嘉泰姆

8UQC嘉泰姆

CSN2UQC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.UQC嘉泰姆

9UQC嘉泰姆

CSP2UQC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.UQC嘉泰姆


UQC嘉泰姆

PINUQC嘉泰姆

FUNCTIONUQC嘉泰姆

NO.UQC嘉泰姆

NAMEUQC嘉泰姆

10UQC嘉泰姆

DROOPUQC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%.UQC嘉泰姆

11UQC嘉泰姆

RTUQC嘉泰姆

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

RTUQC嘉泰姆

Operating Frequency (kHz)UQC嘉泰姆

GNDUQC嘉泰姆

150UQC嘉泰姆

FloatingUQC嘉泰姆

300UQC嘉泰姆

5VCCUQC嘉泰姆

400UQC嘉泰姆

12UQC嘉泰姆

COMPUQC嘉泰姆

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

13UQC嘉泰姆

FBUQC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.UQC嘉泰姆

14UQC嘉泰姆

SSUQC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.UQC嘉泰姆

15UQC嘉泰姆

REFIN/ENUQC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.UQC嘉泰姆

16UQC嘉泰姆

REFOUT/PO
KUQC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).UQC嘉泰姆

17UQC嘉泰姆

BOOT2UQC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.UQC嘉泰姆

18UQC嘉泰姆

UGATE2UQC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.UQC嘉泰姆

19UQC嘉泰姆

PHASE2UQC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.UQC嘉泰姆

20UQC嘉泰姆

LGATE2UQC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.UQC嘉泰姆

21UQC嘉泰姆

VCCDRVUQC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.UQC嘉泰姆

22UQC嘉泰姆

VCCUQC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.UQC嘉泰姆

23UQC嘉泰姆

LGATE1UQC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.UQC嘉泰姆

PINUQC嘉泰姆

FUNCTIONUQC嘉泰姆

NO.UQC嘉泰姆

NAMEUQC嘉泰姆

24UQC嘉泰姆

PHASE1UQC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.UQC嘉泰姆

25UQC嘉泰姆

PGNDUQC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.UQC嘉泰姆

六.电路原理图</span>UQC嘉泰姆


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UQC嘉泰姆

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40UQC嘉泰姆

4.5UQC嘉泰姆

13.2UQC嘉泰姆

0.6UQC嘉泰姆

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4000UQC嘉泰姆

CXSD6295UQC嘉泰姆

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1UQC嘉泰姆

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13.2UQC嘉泰姆

0.8UQC嘉泰姆

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CXSD6296A|B|C|DUQC嘉泰姆

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1UQC嘉泰姆

1UQC嘉泰姆

25UQC嘉泰姆

3UQC嘉泰姆

13.2UQC嘉泰姆

0.6|0.8UQC嘉泰姆

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CXSD6297UQC嘉泰姆

TDFN3x3-10UQC嘉泰姆

VMUQC嘉泰姆

1UQC嘉泰姆

1UQC嘉泰姆

25UQC嘉泰姆

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13.2UQC嘉泰姆

0.8UQC嘉泰姆

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CXSD6298UQC嘉泰姆

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25UQC嘉泰姆

4.5UQC嘉泰姆

25UQC嘉泰姆

0.6UQC嘉泰姆

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CXSD6299|AUQC嘉泰姆

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1UQC嘉泰姆

1UQC嘉泰姆

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13.2UQC嘉泰姆

0.8UQC嘉泰姆

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CXSD62100UQC嘉泰姆

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2500UQC嘉泰姆

CXSD62101|LUQC嘉泰姆

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COTUQC嘉泰姆

1UQC嘉泰姆

1UQC嘉泰姆

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3UQC嘉泰姆

25UQC嘉泰姆

0.8UQC嘉泰姆

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2000UQC嘉泰姆

CXSD62102UQC嘉泰姆

TQFN3x3-16UQC嘉泰姆

COTUQC嘉泰姆

1UQC嘉泰姆

1UQC嘉泰姆

30UQC嘉泰姆

1.8UQC嘉泰姆

28UQC嘉泰姆

0.6UQC嘉泰姆

5UQC嘉泰姆

600UQC嘉泰姆

CXSD62102AUQC嘉泰姆

TQFN 3x3 16UQC嘉泰姆

COTUQC嘉泰姆

1UQC嘉泰姆

1UQC嘉泰姆

30UQC嘉泰姆

1.8UQC嘉泰姆

28UQC嘉泰姆

0.6UQC嘉泰姆

5UQC嘉泰姆

600UQC嘉泰姆

CXSD62103UQC嘉泰姆

QFN4x4-24UQC嘉泰姆

VMUQC嘉泰姆

2UQC嘉泰姆

1UQC嘉泰姆

50UQC嘉泰姆

4.5UQC嘉泰姆

13.2UQC嘉泰姆

0.6UQC嘉泰姆

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5000UQC嘉泰姆

CXSD62104UQC嘉泰姆

TQFN4x4-24UQC嘉泰姆

COTUQC嘉泰姆

1UQC嘉泰姆

2UQC嘉泰姆

15UQC嘉泰姆

6UQC嘉泰姆

25UQC嘉泰姆

2UQC嘉泰姆

NUQC嘉泰姆

550UQC嘉泰姆

CXSD62105UQC嘉泰姆

TQFN4x4-24UQC嘉泰姆

COTUQC嘉泰姆

1UQC嘉泰姆

2UQC嘉泰姆

15UQC嘉泰姆

6UQC嘉泰姆

25UQC嘉泰姆

2UQC嘉泰姆

NUQC嘉泰姆

550UQC嘉泰姆

CXSD62106|AUQC嘉泰姆

TQFN4x4-4UQC嘉泰姆

TQFN3x3-20UQC嘉泰姆

COTUQC嘉泰姆

1UQC嘉泰姆

2UQC嘉泰姆

20UQC嘉泰姆

3UQC嘉泰姆

28UQC嘉泰姆

0.75UQC嘉泰姆

5UQC嘉泰姆

800UQC嘉泰姆

CXSD62107UQC嘉泰姆

TQFN3x3-16UQC嘉泰姆

COTUQC嘉泰姆

1UQC嘉泰姆

1UQC嘉泰姆

20UQC嘉泰姆

1.8UQC嘉泰姆

28UQC嘉泰姆

0.75UQC嘉泰姆

5UQC嘉泰姆

400UQC嘉泰姆

CXSD62108UQC嘉泰姆

QFN3.5x3.5-14UQC嘉泰姆

TQFN3x3-16UQC嘉泰姆

COTUQC嘉泰姆

1UQC嘉泰姆

1UQC嘉泰姆

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1.8UQC嘉泰姆

28UQC嘉泰姆

0.75UQC嘉泰姆

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400UQC嘉泰姆

CXSD62109UQC嘉泰姆

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1.8|1.5|0.5UQC嘉泰姆

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740UQC嘉泰姆

CXSD62111UQC嘉泰姆

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|QFN3x3-20UQC嘉泰姆

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1UQC嘉泰姆

2UQC嘉泰姆

15UQC嘉泰姆

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28UQC嘉泰姆

0.5UQC嘉泰姆

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250UQC嘉泰姆

CXSD62113|CUQC嘉泰姆

TQFN3x3-20UQC嘉泰姆

COTUQC嘉泰姆

1UQC嘉泰姆

2UQC嘉泰姆

15UQC嘉泰姆

6UQC嘉泰姆

25UQC嘉泰姆

2UQC嘉泰姆

NUQC嘉泰姆

550UQC嘉泰姆

CXSD62113EUQC嘉泰姆

TQFN 3x3 20UQC嘉泰姆

COTUQC嘉泰姆

2UQC嘉泰姆

2UQC嘉泰姆

11UQC嘉泰姆

6UQC嘉泰姆

25UQC嘉泰姆

2UQC嘉泰姆

NUQC嘉泰姆

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CXSD62114UQC嘉泰姆

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5.5UQC嘉泰姆

25UQC嘉泰姆

2UQC嘉泰姆

NUQC嘉泰姆

280UQC嘉泰姆

CXSD62115UQC嘉泰姆

QFN4x4-24UQC嘉泰姆

VMUQC嘉泰姆

2UQC嘉泰姆

1UQC嘉泰姆

60UQC嘉泰姆

3.1UQC嘉泰姆

13.2UQC嘉泰姆

0.85UQC嘉泰姆

12UQC嘉泰姆

5000UQC嘉泰姆

CXSD62116A|B|CUQC嘉泰姆

SOP-8PUQC嘉泰姆

VMUQC嘉泰姆

1UQC嘉泰姆

1UQC嘉泰姆

20UQC嘉泰姆

2.9UQC嘉泰姆

13.2UQC嘉泰姆

0.8UQC嘉泰姆

12UQC嘉泰姆

16000UQC嘉泰姆

CXSD62117UQC嘉泰姆

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30UQC嘉泰姆

10UQC嘉泰姆

13.2UQC嘉泰姆

1UQC嘉泰姆

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5000UQC嘉泰姆

CXSD62118UQC嘉泰姆

TDFN3x3-10UQC嘉泰姆

COTUQC嘉泰姆

1UQC嘉泰姆

1UQC嘉泰姆

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1.8UQC嘉泰姆

28UQC嘉泰姆

0.7UQC嘉泰姆

5UQC嘉泰姆

250UQC嘉泰姆

CXSD62119UQC嘉泰姆

TQFN3x3-20UQC嘉泰姆

COTUQC嘉泰姆

2UQC嘉泰姆

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25UQC嘉泰姆

REFIN SettingUQC嘉泰姆

5UQC嘉泰姆

700UQC嘉泰姆

CXSD62120UQC嘉泰姆

QFN 3x3 20UQC嘉泰姆

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COTUQC嘉泰姆

1UQC嘉泰姆

2UQC嘉泰姆

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3UQC嘉泰姆

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1.8|1.5 1.35|1.2 0.5UQC嘉泰姆

5UQC嘉泰姆

800UQC嘉泰姆

CXSD62121AUQC嘉泰姆

TQFN3x3 20UQC嘉泰姆

COTUQC嘉泰姆

1UQC嘉泰姆

2UQC嘉泰姆

15UQC嘉泰姆

3UQC嘉泰姆

28UQC嘉泰姆

0.75UQC嘉泰姆

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220UQC嘉泰姆

CXSD62121BUQC嘉泰姆

TQFN3x3 20UQC嘉泰姆

COTUQC嘉泰姆

1UQC嘉泰姆

2UQC嘉泰姆

15UQC嘉泰姆

3UQC嘉泰姆

28UQC嘉泰姆

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COTUQC嘉泰姆

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2UQC嘉泰姆

20UQC嘉泰姆

3UQC嘉泰姆

28UQC嘉泰姆

0.75UQC嘉泰姆

5UQC嘉泰姆

180      UQC嘉泰姆

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