ml4810cs Microsemi Corporation, ml4810cs Datasheet - Page 7

• Manufacturer Part Number: ml4810cs
• Description: High Frequency Power Supply Controller
• Manufacturer: Microsemi Corporation

ERROR AMPLIFIER
The ML4811 error amplifier is a 5.5MHz bandwidth
12V/ sec slew rate op-amp with provision for limiting the
positive output voltage swing (Output Inhibit line) for ease
in implementing the soft start function.
Figure 9. Oscillator Deadtime vs C
Figure 11. Open Loop Frequency Response
0.047
100
4.70
2.20
1.00
0.47
0.22
0.10
–20
80
60
40
20
0
0.47
100
1.0
1k
2.2
10k
FREQUENCY (Hz)
0
4.7
AV
C T (nF)
100k
10.0
T
1M
(3k
22
10M
47
R
T
100M
100
100k )
0
0
–90
–180
OUTPUT DRIVER STAGE
The ML4811 Output Driver is a 2A peak output high
speed totem pole circuit designed to quickly switch the
gates of capacitive loads, such as power MOSFET
transistors.
5
4
3
2
1
0
Figure 10. Unity Gain Slew Rate
Figure 12. Simplified Schematic
V
IN
V
CC
0.2
V
OUT
ML4810, ML4811
0.4
TIME ( s)
Q2
Q1
0.6
POWER V
POWER
OUT A
OUT B
GND
0.8
C
13
11
14
12
1.0
7