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Desktop Computer System

System View | Block Diagram
Protection Area Illustration (click to open larger image in new window)
  1. AC Power
  2. Analog Audio
  3. Buttons
  4. CD / DVD ROM
  5. CPU Protection
  6. DVI Port
  7. Hard Drive
  8. HDMI Port
  9. Headphone Jack
  10. IEEE 1394 FireWire
  11. LCD Monitor Controller
  12. IEEE 1284 Parallel Port
  13. PS/2 Port
  14. RS-232
  15. Ethernet
  16. Phone / Modem
  17. Desktop Speaker
  18. S-Video
  19. SCSI I/O Bus
  20. USB 2.0 Port
Desktop System Headphone Jack CD / DVD ROM CD / DVD ROM LCD Monitor Controller/Inverter Desktop Speaker Desktop Speaker AC Power CD / DVD ROM CPU Protection IEEE 1284 (Printer Port) Parallel Port Parallel Port Hard Disk Drive S-Video USB Desktop Speaker HDMI Port DVI Port RS-232 RS-232 Hard Drive Ethernet Port PS/2 Port CPU LCD Monitor Controller USB 2.0 Port IEEE 1394 FireWire Headphone Jack SCSI I/O Bus SCSI Rj-11 Modem Port Mouse Keyboard / Buttons RJ-11 Modem Port

Central Processing Unit (CPU) Protection

Problem: Load-change transients

A load-change transient occurs when coming out of or entering a low power mode. For some CPUs this load-change transient can be on the order of 13A and this can severely damage the processor.
 

Solution: PolySwitch devices.

A PolySwitch device can be placed on the input pins to the VRMs that supply power to the processors to help protect the processors. PolySwitch devices limit the flow of dangerously high currents during fault conditions and reset back to normal operating mode once the fault condition is removed.

 

Read more about the Raychem Radial-leaded (R-line) PolySwitch device

Applicable Product Series: RGEF.
Download R-line Datasheet - (pdf 439KB)
Agency Recognition: UL E74889, TÜV R9872049, R9872048, R2172061, CSA 078165_C_000.

 

Circuit Diagram / Schematic
 

Application Notes:

• CPU Protection (pdf 34KB)
 

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