参数资料
| 型号： | NCP5386MNR2G |
| 厂商： | ON Semiconductor |
| 文件页数： | 26/33页 |
| 文件大小： | 0K |
| 描述： | IC CTLR BUCK 1/2PHASE 32-QFN |
| 标准包装： | 2,500 |
| 应用： | 控制器，Intel VR10、VR11、AMD CPU |
| 输入电压： | 4.75 V ~ 5.25 V |
| 输出数： | 2 |
| 工作温度： | 0°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-VFQFN 裸露焊盘 |
| 供应商设备封装： | 32-QFN（5x5） |
| 包装： | 带卷 (TR) |
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NCP5386, NCP5386A, NCP5386B
APPLICATION INFORMATION
The NCP5386 is a high performance multiphase
controller optimized to meet the Intel VR11 Specifications.
The demo board for the NCP5386 is available by request.
It is configured as a four phase solution with decoupling
designed to provide a 1.0 m W load line under a 100 A step
load. A schematic is available upon request from ON
Semiconductor.
Startup Procedure
The demo board comes with a Socket 775 and requires
an Intel dynamic load tool (V TT Tool) available through a
third party supplier, Cascade Systems. The web page is
http://www.cascadesystems.net/.
Start by installing the test tool software. It’s best to power
the test tool from a separate ATX power supply. The test
tool should be set to a valid VID code of 0.5 V or above
in ? order for the controller to start. Consult the V TT help
manual for more detailed instructions.
Startup Sequence
1. Make sure the V TT software is installed.
2. Powerup the PC or Laptop do not start the V TT
software.
3. Insert the V TT Test Tool adapter into the socket
and lock it down.
4. Insert the socket saver pin field into the bottom of
the V TT test tool.
5. Carefully line up the tool with the socket in the
board and press tool into the board.
6. Connect the scope probe, or DMM to the voltage
sense lines on the test tool. When using a scope
probe it is best to isolate the scope from the AC
ground. Make the ground connection on the scope
probe as short as possible.
7. Connect the first ATX supply to the V TT tool.
8. Powerup the first ATX supply to the V TT tool.
9. Start the V TT tool software in VR11 mode with
the current limit set to 150 A.
10. Using the V TT tool software, select a VID code
that is 0.5 V or above.
11. Connect the second ATX supply to the demo
board.
12. Set the VID DIP switches. All the VID switches
should be up or open.
13. Set the VR_ENABLE DIP switch down or
closed.
14. Set the VR10 DIP switch up or open.
16. Start the second ATX supply by turning it on and
setting the PSON DIP switch low. The green VID
lights should light up to match the V TT tool VID
setting.
17. Set the VR_ENABLE DIP switch up to start the
NCP5386.
18. Check that the output voltage is about 19 mV
below the VID setting.
Step Load Testing
The V TT tool is used to generate the high d i /d t step load.
Select the dynamic loading option in the V TT test tool
software. Set the desired step load size, frequency, duty,
and slew rate. See Figures 23 and 24.
Figure 23. Typical Step Load Response
Figure 24. Typical Load Release Event
15. Set the VID_SEL switch up or open.
http://onsemi.com
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