參數(shù)資料
型號(hào): ML4823CS
廠商: FAIRCHILD SEMICONDUCTOR CORP
元件分類(lèi): 穩(wěn)壓器
英文描述: High Frequency Power Supply Controller
中文描述: 2 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16
封裝: SOIC-16
文件頁(yè)數(shù): 6/9頁(yè)
文件大小: 121K
代理商: ML4823CS
ML4823
6
REV. 1.0 10/12/2000
ERROR AMPLIFIER
The ML4823 error amplifier is a 5.5MHz bandwidth 12V/μs
slew rate op-amp with provision for limiting the positive
output voltage swing (Output Inhibit line) for ease in
implementing the soft start function.
5
4
3
2
1
0
0.2
0.4
0.6
0.8
1.0
TIME (
μ
s)
V
IN
V
OUT
100
80
60
40
20
0
–20
100
1K
10K
100K
FREQ (Hz)
1M
10M
100M
0
0
–90
–180
GAIN
φ
Figure 5. Unity Gain Slew Rate
Figure 6. Open Loop Frequency Response
OUTPUT DRIVER STAGE
The ML4823 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.
Figure 8. Saturation Curves
3
2
1
0
0
0.5
1.0
1.5
I
OUT
(A)
V
S
(
SOURCE
SINK
Figure 7. Simplified Schematic
POWER
GND
Q1
Q2
OUT
V
CC
POWER
V
C
15
10
5
0
0
40
80
120
160
200
TIME (ns)
T
O
0.2
I
L
(A)
0
–0.2
15
10
5
0
0
100
200
300
400
500
TIME (ns)
T
O
2
I
L
(A)
0
–2
Figure 10 Rise/Fall Time (C
L
= 10,000pF)
Figure 9. Rise/Fall Time (C
L
= 1000pF)
相關(guān)PDF資料
PDF描述
ML4823IS High Frequency Power Supply Controller
ML4823MJ High Frequency Power Supply Controller
ML4824 Power Factor Correction and PWM Controller Combo(功率因數(shù)校正器和PWM控制器組合芯片)
ML4825 High Frequency PWM Controller(高頻PWM控制器)
ML4828 BiCMOS Phase Modulation/Soft Switching Controller(BiCMOS 相調(diào)制器/全橋軟開(kāi)關(guān)控制器)
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