
Revision History
ix
21103G/0—February 1999
AMD-K6
Processor Power Supply Design
Revision History
Date
Rev
E
E
E
E
E
E
Description
March 1998
March 1998
March 1998
March 1998
March 1998
March 1998
Changed general reference voltage 2.x V to 2.2 V.
Revised Example 4, “Actual 2.2 V @ 7.5A” on page 13.
Revised Table 2, “Voltage Error Budget for 0.25-Micron Processors (Models 7 and 8),” on page 16.
Revised Figure 8, “Bulk Decoupling versus Output Voltage Response for 2.2 V @7.5 A,” on page 17.
Revised Figure 17, “Linear LT1575 2.2V/2.9V/3.2V Linear Power Supply Design,” on page 34.
Revised Figure 18, “Linear LT1553 1.8V to 3.5V Switching Power Supply Design,” on page 35.
Revised to provide information for the AMD-K6
-2 processor Model 8.
Removed Table 1, “AMD-K6
Processor Power Specifications”. The voltage and current
specifications for Models 6 and 7 are provided in the
AMD-K6
Processor Data Sheet,
order #
20695. The voltage and current specifications for Model 8 are provided in the
AMD-K6
-2
Processor Data Sheet,
order # 21850.
Expanded information in “Power Supply Specification” starting on page 5.
Added Example 5 “Hypothetical 2.3 V @ 15 A” on page 17 and Figure 9 on page 18.
Added the following power supply solutions: “Cherry CS5166” on page 28, “Harris Semiconductor
HIP6004 and HIP6005” on page 32, “Linear Technology LT1553” on page 34, “Maxim MAX1638”
on page 38, “Fairchild RC5051” on page 43, “Semtech SC1182 and SC1183” on page 45, and
“Unisem US3004” on page 48.
Cut the following power supply solutions: Cherry CS5151/CS5156, Harris Semiconductor HIP6003,
Linear Technology LT1575 and LT1430, Maxim MAX1624, Raytheon RC5036 and RC5041, Semtech
SC1151, and Unisem US2075
Revised description of “LINFINTY LX1664 and LX1665” on page 36.
Added Table 14, “Micro Linear ML4902 Bill of Materials,” on page 42.
Combined and revised voltage regulator vendor information into one table. See “Voltage
Regulator Vendor Information” on page 53.
Added information about the AMD-K6-
III
processor Model 9.
Added information about the 5-bit VID code on page 2.
Added “Switching Regulator Layout” on page 10.
Added information on determining the number of capacitors to Example 2 on page 13.
Changed Example 5 to 2.4 V and changed Figure 9, “Bulk Decoupling versus Output Voltage
Response for 2.4 V @15 A” on page 18.
Changed the recommended utility in “Output Voltage Response Measurement Utility” on page 19.
May 1998
F
May 1998
F
May 1998
May 1998
F
F
May 1998
F
May 1998
F
May 1998
May 1998
F
F
May 1998
F
Feb 1999
Feb 1999
Feb 1999
Feb 1999
G
G
G
G
Feb 1999
G
Feb 1999
G