ADP3152AR Analog Devices, ADP3152AR Datasheet - Page 5

• Manufacturer Part Number: ADP3152AR
• Description: 5-Bit Programmable Synchronous Switching Regulator Controller for Pentium II Processor
• Manufacturer: Analog Devices

Figure 4. Efficiency vs. Output Current
REV. 0
Figure 7. Gate Switching Waveforms
1
100
2
Figure 10. Transient Response,
1A–14 A of Figure 2 Circuit
95
90
85
80
75
70
65
DRIVE 1 AND 2 = 5V/DIV
1.4 2.8
V
OUT
OUTPUT VOLTAGE
20mV/DIV
OUTPUT CURRENT
1A TO 14A
= +2.0V
4.2 5.6 7.0
OUTPUT CURRENT – Amps
V
OUT
DRIVER OUTPUT
DRIVER OUTPUT
SECONDARY
= +3.5V, I
PRIMARY
N-DRIVE
N-DRIVE
V
OUT
V
8.4
OUT
OUT
= +3.5V
= 10A
= +2.8V
9.8 11.2 12.6
SEE FIGURE 2
SEE FIGURE 2
500ns/DIV
14.0
Figure 8. Driver Transition Waveforms
450
400
350
300
250
200
150
100
4
3
Figure 5. Frequency vs. Timing
Capacitor
2
50
Figure 11. Power-On Start-Up
Waveforms
0
50
OUTPUT VOLTAGE
Typical Performance Characteristics–ADP3152
V
CC
REGULATOR
100
5V/DIV
VOLTAGE
1V/DIV
200 300 400 500 600 700
TIMING CAPACITOR – pF
100ns/DIV
–5–
10ms
SEE FIGURE 2
800
Figure 9. Transient Response, 14 A–1A
of Figure 2 Circuit
Figure 6. Gate Charge Supply Cur-
rent vs. Operating Frequency
25
20
15
10
45
40
35
30
25
20
15
10
5
0
5
0
Figure 12. Output Accuracy
Distribution, V
45
T
SEE FIGURE 13
A
= +25 C
OUTPUT VOLTAGE
20mV/DIV
OPERATING FREQUENCY – kHz
OUTPUT ACCURACY – %
58
OUTPUT CURRENT
14A TO 1A
10 s/DIV
OUT
Qn + Qn = 100nC
83
= 2.8 V
134
397