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MAX1519 Datasheet, PDF (9/43 Pages) Maxim Integrated Products – Dual-Phase, Quick-PWM Controllers for Programmable CPU Core Power Supplies
Dual-Phase, Quick-PWM Controllers for
Programmable CPU Core Power Supplies
Typical Operating Characteristics
(Circuit of Figure 1, VIN = 12V, VCC = VDD = 5V, SHDN = SKIP = VCC, D0–D4 set for 1.5V (SUS = GND), S0–S1 set
for 1V (SUS = VCC), OFS = GND, TA = +25°C, unless otherwise specified.)
OUTPUT VOLTAGE vs. LOAD CURRENT
(VOUT = 1.50V)
1.52
1.50
1.48
1.46
1.44
1.42
1.40
1.38
0
10 20 30 40 50 60
LOAD CURRENT (A)
EFFICIENCY vs. LOAD CURRENT
(VOUT = 1.50V)
100
VIN = 8V
90
80
70
60
50
0.1
VIN = 12V
VIN = 20V
SKIP = REF
SKIP = VCC
1
10
100
LOAD CURRENT (A)
OUTPUT VOLTAGE vs. LOAD CURRENT
(VOUT = 1.00V)
1.02
1.00
0.98
0.96
0.94
0.92
0.90
0
10 20 30 40 50 60
LOAD CURRENT (A)
EFFICIENCY vs. LOAD CURRENT
(VOUT = 1.00V)
100
VIN = 8V
90
OUTPUT VOLTAGE vs. LOAD CURRENT
(VOUT = 0.80V)
0.82
SUS = VCC
0.80
DUAL-PHASE EFFICIENCY vs. LOAD CURRENT
(VOUT = 0.80V)
100
SKIP = REF
90
VIN = 8V
80
0.78
80
70
60
50
0.1
VIN = 12V
0.76
70
VIN = 12V
VIN = 20V
0.74
VIN = 20V
60
SKIP = REF
SKIP = VCC
0.72
50
1
10
100
0
10
20
30
40
0.1
1
10
100
LOAD CURRENT (A)
LOAD CURRENT (A)
LOAD CURRENT (A)
SINGLE-PHASE EFFICIENCY
vs. LOAD CURRENT
(VOUT = 0.80V)
100
SKIP = GND
90
VIN = 8V
80
70
VIN = 12V
60
VIN = 20V
50
0.1
1
10
100
LOAD CURRENT (A)
SWITCHING FREQUENCY
vs. LOAD CURRENT
400
300
FORCED-PWM (SKIP = VCC)
200
SKIP MODE (SKIP = REF)
100
VOUT = 1V (NO LOAD)
0
0
10
20
30
40
LOAD CURRENT (A)
NO-LOAD SUPPLY CURRENT
vs. INPUT VOLTAGE (FORCED-PWM MODE)
150
SKIP = VCC
120
ICC + IDD
90
60
30
0
0
IIN
5 10 15 20 25 30
INPUT VOLTAGE (V)
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