參數(shù)資料
型號(hào)： GM1431AT92RL
廠商： Electronic Theatre Controls, Inc.
英文描述： Three Terminal adjustable shunt regulator with thermal Stability Guaranteed over temperature.
中文描述： 三端溫度與熱穩(wěn)定性保證可調(diào)并聯(lián)穩(wěn)壓器。
文件頁(yè)數(shù)： 10/13頁(yè)
文件大?。?/td> 300K
代理商： GM1431AT92RL
GM1431
10
This refers to the determination of the gain frequency characteristic of the shunt regulator as an error amplifier.
Taking the configuration in figure 16, the error amplifier characteristic is as shown in figure 17.
AC Characteristic Determination:
Figure 17. GM1431 Error Amplification Characteristic
G1
G2
When R = 0
5
Gain G (dB)
f1
f
AC
f2
When R = 0
5
In Figure 17, the following formulas are obtained:
Gain
G
= G
50 dB to 60 dB (determined by shunt regulator)
1
0
G
=
2
Corner frequencies
f
= 1/(2
p
C
G
R )
1
1
0
3
f = 1/(2
p
C
R )
2
1
5
G
is the shunt regulator open-loop gain; this is given by the reciprocal of the reference voltage fluctuation
0
D
Vref/
D
V
KA
R
5
R
3
Practical Example
Consider the example of a photocoupler, with an internal light emitting diode V = 1.05 V and I = 2.5 mA,
F
F
power supply output voltage V = 5 V, and bias resistance R current of approximately 1/5 I at 0.5 mA. If
2
2
F
the shunt regulator V = 3 V, the following values are found.
K
Next, assume that R = R = 10 k
W
. This gives a 5 V output. If R = 3.3 k
W
and C = 0.022 μF, the
3
4
5
1
following values are found.
G = 3.3 k
W
/ 10 k
W
= 0.33 times (–10 dB)
2
f = 1 / (2 x
p
x 0.022 μF x 316 x 10 k
W
) = 2.3 (Hz)
1
f = 1 / (2 x
p
x 0.022 μF x 3.3 k
W
) = 2.2 (kHz)
2
R = =316
W
1
5V - 1.05V - 3V
2.5mA + 0.54mA
R = =2.1 k
W
2
1.05V
0.54mA
f
Frequency f (Hz)
osc
*
: PWM switching frequency
f
osc
A
A
MICROELECTRONICS
GM1431
Adjustable Shunt Regulator
ADJUSTABLE SHUNT REGULATOR
相關(guān)PDF資料
PDF描述
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GM1431BST23R Three Terminal adjustable shunt regulator with thermal Stability Guaranteed over temperature.
GM1431CS8T Three Terminal adjustable shunt regulator with thermal Stability Guaranteed over temperature.
GM1431CST23R Three Terminal adjustable shunt regulator with thermal Stability Guaranteed over temperature.
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
GM1431AT92T 制造商:GAMMA 制造商全稱(chēng):GAMMA 功能描述:ADJUSTABLE SHUNT REGULATOR
GM1431B 制造商:GAMMA 制造商全稱(chēng):GAMMA 功能描述:Adjustable Shunt Regulators
GM1431BS8B 制造商:GAMMA 制造商全稱(chēng):GAMMA 功能描述:ADJUSTABLE SHUNT REGULATOR
GM1431BS8R 制造商:GAMMA 制造商全稱(chēng):GAMMA 功能描述:ADJUSTABLE SHUNT REGULATOR
GM1431BS8RL 制造商:GAMMA 制造商全稱(chēng):GAMMA 功能描述:ADJUSTABLE SHUNT REGULATOR
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