MAX1718 Maxim, MAX1718 Datasheet - Page 7

• Manufacturer Part Number: MAX1718
• Description: Notebook CPU Step-Down Controller for Intel Mobile Voltage Positioning IMVP-II
• Manufacturer: Maxim

(Circuit of Figure 1, V+ = 12V, V
40
35
30
25
20
15
10
A
B
C
5
0
5
Notebook CPU Step-Down Controller for Intel
A = V
B = INDUCTOR CURRENT, 10A/div
C = SKP/SDN, 5V/div
OUT
NO-LOAD SUPPLY CURRENT
, 1V/div
(PWM MODE, NO LOAD)
STARTUP WAVEFORM
10
vs. INPUT VOLTAGE
INPUT VOLTAGE (V)
100µs/div
_______________________________________________________________________________________
15
I+
I
DD
CC
20
+ I
Mobile Voltage Positioning (IMVP - II)
= V
MAX1718 toc09
DD
CC
25
= SKP/SDN = 5V, V
0A
Typical Operating Characteristics (continued)
A
B
B
C
A
A = V
B = INDUCTOR CURRENT, 10A/div
A = V
B = INDUCTOR CURRENT, 10A/div
C = SKP/SDN, 5V/div
OUT
OUT
LOAD-TRANSIENT RESPONSE
, 50mV/div, AC-COUPLED
OUT
(PWM MODE, I
, 1V/div
STARTUP WAVEFORM
= 1.25V, T
(SKIP MODE)
100µs/div
40µs/div
OUT
A
= 12A)
= +25°C, unless otherwise noted.)
MAX1718 toc08a
MAX1718 toc10
0A
OA
A
B
B
C
D
A
DYNAMIC OUTPUT VOLTAGE TRANSITION
A = V
B = INDUCTOR CURRENT, 10A/div
V
I
A = V
B = INDUCTOR CURRENT, 10A/div
C = VGATE, 5V/div
D = ZMODE, 5V/div
OUT
OUT
= 3A, R
OUT
OUT
= 1.15V TO 1.25V
LOAD-TRANSIENT RESPONSE
, 100mV/div, AC-COUPLED
, 50mV/div, AC-COUPLED
TIME
(PWM MODE)
(PWM MODE)
= 62kΩ
40µs/div
40µs/div
MAX1718 toc08b
MAX1718 toc11
OA
0A
7