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ER3105DI Datasheet, PDF (7/25 Pages) Altera Corporation – 500mA Wide VIN Synchronous Buck Regulator
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Page 7
Efficiency Curves
FSW = 800kHz, TA = +25°C
100
95
VIN = 15V
VIN = 12V
VIN = 6V
90
85
80
V
75
70
VIN = 24V
VIN = 33V
V
V
V
V
65
60
55
50
0 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50
OUTPUT LOAD (A)
FIGURE 5. EFFICIENCY vs LOAD, PFM, VOUT = 5V
100
95
VIN = 15V
VIN = 12V
VIN = 5V
90
85
80
75
70
VIN = 24V
65
VIN = 33V
60
55
50
0 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50
OUTPUT LOAD (A)
FIGURE 7. EFFICIENCY vs LOAD, PFM, VOUT = 3.3V
100
95
VIN = 15V
VIN = 12V
VIN = 6V
90
85
80
VIN = 24V
75
VIN = 33V
70
65
60
55
500 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50
OUTPUT LOAD (A)
FIGURE 6. EFFICIENCY vs LOAD, PWM, VOUT = 5V
100
95 VIN = 15V
VIN = 12V
VIN = 5V
90
85
80
75
70
VIN = 24V
VIN = 33V
65
60
55
500 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50
OUTPUT LOAD (A)
FIGURE 8. EFFICIENCY vs LOAD, PWM, VOUT = 3.3V
100
95
VIN = 15V
VIN = 12V
VIN = 5V
90
85
80
75
70
65
VIN = 24V
VIN = 33V
60
55
50
0 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50
OUTPUT LOAD (A)
FIGURE 9. EFFICIENCY vs LOAD, PFM, VOUT = 1.8V
100
95
90
VIN = 15V
VIN = 12V
VIN = 5V
85
80
75
70
65
VIN = 24V
VIN = 33V
60
55
500 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50
OUTPUT LOAD (A)
FIGURE 10. EFFICIENCY vs LOAD, PWM, VOUT = 1.8V
March 2014 Altera Corporation
09616
ER3105DI 500mA Wide VIN Synchronous Buck Regulator
March 14, 2014
Rev A
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