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ꢖ
SLUS395J - FEBRUARY 2000 - REVISED MARCH 2009
APPLICATION INFORMATION
MULTIPLIER OUTPUT CURRENT
MULTIPLIER GAIN
vs
vs
VOLTAGE ERROR AMPLIFIER OUTPUT
VOLTAGE ERROR AMPLIFIER OUTPUT
1.5
1.3
1.1
350
300
250
IAC = 150 µA
FF
V
= 1.4 V
IAC = 150
A
µ
200
150
IAC = 300 µA
= 3.0 V
V
FF
0.9
0.7
0.5
IAC = 300
A
µ
IAC = 500
A
µ
100
50
0
IAC = 500 µA
FF
V
= 4.7 V
1.0
2.0
3.0
4.0
5.0
0.0
1.0
2.0
3.0
4.0
5.0
VAOUT − Voltage Error Amplifier Output − V
VAOUT − Voltage Error Amplifier Output − V
Figure 10
Figure 11
RECOMMENDED MINIMUM GATE RESISTANCE
vs
MULTIPLIER CONSTANT POWER PERFORMANCE
500
SUPPLY VOLTAGE
17
16
15
14
13
12
11
10
9
400
VAOUT = 5 V
300
VAOUT = 4 V
200
VAOUT = 3 V
100
VAOUT = 2 V
8
0
10
12
14
16
18
20
0.0
1.0
2.0
3.0
4.0
5.0
VCC − Supply Voltage − V
VFF − Feedforward Voltage − V
Figure 12
Figure 13
17
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