MIC2182 Micrel Semiconductor, MIC2182 Datasheet - Page 25

• Manufacturer Part Number: MIC2182
• Description: High-Efficiency Synchronous Buck Controller Final Information
• Manufacturer: Micrel Semiconductor

June 2000
MIC2182
100
100
(4A Power Supply Configuration)
(4A Power Supply Configuration)
-20
-40
80
60
40
20
80
60
40
20
0.01
0
0
Skip
V
R2 = 15m
L1 = 10 H
1 high-side MOSFET: Si4800
1 low-side MOSFET: Si4800
IN
OUTPUT CURRENT (A)
= 12V
(4A Power Supply Configuration)
FREQUENCY (Hz)
12V Efficiency
Bode Plot
Load Transient Response
0.1
GAIN
and Bode Plot
PHASE
1
PWM
4
210
180
150
120
90
60
30
0
100
100
(4A Power Supply Configuration)
(4A Power Supply Configuration)
V
V
L1 = 10 H
R2 = 20m
80
60
40
20
80
60
40
20
0.01
0.01
IN
OUT
0
0
= 12V
Skip
Skip
V
R2 = 15m
L1 = 10 H
1 high-side MOSFET: Si4800
1 low-side MOSFET: Si4800
V
R2 = 15m
L1 = 10 H
1 high-side MOSFET: Si4800
1 low-side MOSFET: Si4800
= 3.3V
IN
IN
OUTPUT CURRENT (A)
OUTPUT CURRENT (A)
= 5V
= 24V
24V Efficiency
5V Efficiency
0.1
0.1
25
1
1
PWM
PWM
4
4
(10A Power Supply Configuration)
Load Transient Response
and Bode Plot
(10A Power Supply Configuration)
(10A Power Supply Configuration)
100
100
-20
-40
80
60
40
20
80
60
40
20
0.01
0
0
Skip
R2 = 7.5m
L1 = 3.3 H
2 high-side MOSFETs: Si4884
2 low-side MOSFETs: Si4884
OUTPUT CURRENT (A)
FREQUENCY (Hz)
0.1
Bode Plot
Efficiency
PHASE
PWM
GAIN
1
V
V
L1 = 3.3 H
R2 = 7.5m
MIC2182
IN
OUT
10
= 6V
210
180
150
120
90
60
30
0
= 3.3V
Micrel