
List of Figures
v
21103G/0—February 1999
AMD-K6
Processor Power Supply Design
List of Figures
Figure 1.
321-Pin CPGA VCC and Ground Pins Location. . . . . . . . . 4
Figure 2.
Linear and Switching Voltage Regulators. . . . . . . . . . . . . 6
Figure 3.
Basic Asynchronous Design. . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 4.
Basic Synchronous Design. . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 5.
Power Distribution Model. . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 6.
Load Current Step versus Output Voltage Response. . . 15
Figure 7.
Bulk Decoupling versus Output Voltage Response
for 3.2 V @10 A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 8.
Bulk Decoupling versus Output Voltage Response
for 2.2 V @7.5 A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 9.
Bulk Decoupling versus Output Voltage Response
for 2.4 V @15 A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 10. Via Layout For Low Inductance . . . . . . . . . . . . . . . . . . . . 21
Figure 11. Suggested Component Placement . . . . . . . . . . . . . . . . . . 22
Figure 12. 0.1
μ
F (c1) and 0.01
μ
F (c2) X7R Capacitor Impedance
versus Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 13. Decoupling Inductance . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 14. Power Sequencing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 15. Cherry CS5166 Switching Power Supply Design . . . . . . 29
Figure 16. Elantec EL7571 Switching Power Supply Design. . . . . . 30
Figure 17.
Harris HIP6004 1.3V–3.5V Switching Power Supply
Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Figure 18. Linear LT1553 1.8V to 3.5V Switching Power Supply
Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 19. LINFINITY LX1664 Switch-Mode Power Supply
Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Figure 20. Maxim MAX1638 Switching Power Supply. . . . . . . . . . . 40
Figure 21. Micro Linear ML4902 Switching Power Supply
Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Figure 22. Fairchild RC5051 Power Supply Design . . . . . . . . . . . . . 43
Figure 23. Semtech SC1182 Voltage Power Supply Design. . . . . . . 46