參數(shù)資料
型號: 22495
英文描述: Implementation of Write Allocate Application Note Mobile AMD-K6 Processor Power Supply Design Application Note
中文描述: 在寫分配執(zhí)行情況的說明移動應(yīng)用的AMD - K6處理器電源設(shè)計應(yīng)用指南
文件頁數(shù): 43/50頁
文件大?。?/td> 1087K
代理商: 22495
Power Supply Solutions
33
22495C/0—May 1999
Mobile AMD-K6
Processor Power Supply Design
Elantech EL7571
The EL7571 switching regulator is a flexible, high-efficiency,
PWM controller that includes a 5-bit DAC adjustable output.
This regulator employs synchronous rectification to deliver up
to 15A at efficiencies greater than 85% over a supply voltage
range of 4.5V to 12.6V. (Efficiencies up to 92% can be achieved
at 10A.) Figure 17 shows an EL7571 reference design. The VID
code allows the output to be set between 1.3V and 2.05V (in
50mV increments) and 2.1V and 3.5V (in 100mV increments)
with a 1% accuracy. Table 8 on page 34 shows the bill of
materials for the EL7571.
Figure 17. Elantech EL7571 Switching Power Supply Design
0.1uF
5uH
660uF x6
VOUT
1.3V to 3.5V
COSC
CSLOPE
OTEN
REF
PWRGD
FB
CS
LSD
LX
HSD
VHI
VIN
220pF
220pF
0.1uF
ENABLE
7.5m
POWER
GOOD
1.4V
GNDP
VID0
VID1
VID2
VID3
Voltage
I.D.
(VID[0:4])
VINP
GND
VID4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
0.1uF
10
4.5V to
12.6V
1.5uH
0.1uF
660uF x3
C3
C4
C5
D2
L2
R1
Q2
Q1
L2
C1
C7
D1
C6
R2
C2
IC1
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