參數(shù)資料
型號(hào): HA17432UA
廠商: Hitachi,Ltd.
英文描述: 250000 SYSTEM GATE 1.5 VOLT FPGA
中文描述: 高精度變并聯(lián)穩(wěn)壓器
文件頁(yè)數(shù): 10/15頁(yè)
文件大?。?/td> 146K
代理商: HA17432UA
HA17431H Series
Rev.0, Sep. 2001, page 10 of 15
AC characteristic determination:
This refers to the determination of the gain frequency characteristic of
the shunt regulator as an error amplifier. Taking the configuration in figure 2, the error amplifier
characteristic is as shown in figure 3.
When R
5
= 0
f
OSC
Frequency f (Hz)
* f
OSC
: PWM switching frequency
When R
5
0
G
1
f
1
f
AC
f
2
G
2
G
Figure 3 HA17431H Error Amplification Characteristic
In Figure 3, the following formulas are obtained:
Gain
G
1
= G
0
50 dB to 60 dB (determined by shunt regulator)
G
2
=R
5
R
3
Corner frequencies
f
1
= 1/(2
π
C
1
G
0
R
3
)
f
2
= 1/(2
π
C
1
R
5
)
G
0
is the shunt regulator open-loop gain; this is given by the reciprocal of the reference voltage fluctuation
Vref/
V
KA
, and is approximately 50 dB.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HA17432UA-E 制造商:Renesas Electronics Corporation 功能描述:Power Sup,Shunt Req.,Vka=40V,Vref=2.495V
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