Owner's manual

MAX17007A/MAX17008
Dual and Combinable QPWM Graphics
Core Controllers for Notebook Computers
_______________________________________________________________________________________ 9
SMPS2 MAXIMUM OUTPUT CURRENT
vs. TEMPERATURE
MAX17007A/8 toc10
TEMPERATURE (°C)
MAXIMUM OUTPUT CURRENT (A)
80400
11
12
13
14
10
-40 1206020-20 100
V
IN
= 12V
NO-LOAD SUPPLY CURRENT
vs. INPUT VOLTAGE
MAX17007A/8 toc11
INPUT VOLTAGE (V)
SUPPLY CURRERT (I
BIAS
) (mA)
2016
4
8
12
16
0
6
10
14
2
424812
SKIP MODE
PWM MODE
ULTRASONIC MODE
EN1 = HIGH
EN2 = LOW
NO-LOAD INPUT CURRENT
vs. INPUT VOLTAGE
MAX17007A/8 toc12
INPUT VOLTAGE (V)
INPUT CURRENT (mA)
2016
0.1
1
10
100
0.01
424812 1814 22610
SKIP MODE
PWM MODE
ULTRASONIC MODE
EN1 = HIGH
EN2 = LOW
REFERENCE VOLTAGE
vs. REFERENCE LOAD CURRENT
MAX17007A/8 toc13
REFERENCE LOAD CURRENT (μA)
REFERENCE VOLTAGE (V)
8060
1.99
1.97
2.01
2.03
2.05
1.95
-20 10020 400
REFIN1 TO CSL1 OFFSET VOLTAGE
DISTRIBUTION
MAX17007A/8 toc14
OFFSET VOLTAGE (mV)
SAMPLE PERCENTAGE (%)
3.0
60
50
70
80
20
10
30
40
90
0
-5.0 5.0-1.0 1.0-3.0
SAMPLE SIZE = 100
T
A
= +85
°
C
T
A
= +25
°
C
SMPS1 PRESET 1.05V
VOLTAGE DISTRIBUTION
MAX17007A/8 toc15
SMPS1 VOLTAGE (mV)
SAMPLE PERCENTAGE (%)
1.053
60
50
70
80
20
10
30
40
90
0
1.045 1.0551.049 1.0511.047
SAMPLE SIZE = 100
T
A
= +85
°
C
T
A
= +25
°
C
SMPS2 PRESET 1.5V
VOLTAGE DISTRIBUTION
MAX17007A/8 toc16
SMPS2 VOLTAGE (mV)
SAMPLE PERCENTAGE (%)
1.503
15
10
20
25
5
30
0
1.495 1.5051.499 1.5011.497
SAMPLE SIZE = 100
T
A
= +85
°
C
T
A
= +25
°
C
COMBINED-MODE CURRENT BALANCE
vs. LOAD CURRENT
MAX17007A/8 toc17
LOAD CURRENT (A)
V
CSH -
V
CSL
(mV)
201552510
50
40
20
10
30
0
030
SMPS1
SMPS2
SOFT-START WAVEFORM
MAX17007A/8 toc18
400μs/div
A
B
E
F
C
D
5V
A. EN1, EN2, 5V/div
B. REF, 2V/div
C. V
OUT1
, 1V/div
D. V
OUT2
, 1V/div
E. PGOOD1, 5V/div
F. PGOOD2, 5V/div
0
2V
0
5V
0
0
5V
0
1.05V
1.5V
0
Typical Operating Characteristics (continued)
(Circuit of Figure 1, V
IN
= 12V, V
DD
= 5V, SKIP = GND, T
A
= +25°C, unless otherwise noted.)