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參數(shù)資料
| 型號： | RS5RJ4036A-T1 |
| 廠商： | RICOH COMPANY LTD |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | VFM STEP-UP DC/DC CONVERTER WITH VOLTAGE REGULATOR AND DETECTOR |
| 中文描述： | 0.25 A SWITCHING REGULATOR, 100 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | SOP-8 |
| 文件頁數(shù)： | 8/30頁 |
| 文件大小： | 214K |
| 代理商： | RS5RJ4036A-T1 |
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RS5RJ
OPERATION OF STEP-UP DC/DC CONVERTER
Step-up DC/DC Converter charges energy in the inductor when Lx Transistor (LxTr) is ON, and discharges the
energy with the addition of the energy from Input Power Source thereto when LxTr is off, so that a higher output
voltage than the input voltage is obtained.
The operation will be explained with reference to the following diagrams:
< Current through L >
< Basic Circuits >
i2
SD
L
X
Tr
i1
L
CL
V
IN
I
OUT
V
OUT
IL
IL min
IL max
topen
ton
toff
t
T=1/ fosc
Step.1 : LxTr is turned on and current IL (= i1 ) flows, so that energy is charged in L. At this moment, IL(=i1 ) is
increased from ILmin (= 0) to reach ILmax in proportion to the on-time period (ton) of LxTr.
Step.2 : When LxTr is turned off, Schottky diode (SD) is turned on in order that L maintains IL at ILmax, so that
current IL (= i2) is released.
Step.3 : IL (=i2) is gradually decreased, and in the case of discontinuous mode, IL reaches ILmin (=0) after a time
period of topen, so that SD is turned off.
In the case of the VFM control system, with the on-time period (ton) maintained constant, the output voltage
is maintained constant by controlling the oscillator frequency (fosc).
相關PDF資料 |
PDF描述 |
|---|---|
| RS5RJ4036A-T2 | VFM STEP-UP DC/DC CONVERTER WITH VOLTAGE REGULATOR AND DETECTOR |
| RS5RJ4036B | VFM STEP-UP DC/DC CONVERTER WITH VOLTAGE REGULATOR AND DETECTOR |
| RS5RJ4036B-T1 | VFM STEP-UP DC/DC CONVERTER WITH VOLTAGE REGULATOR AND DETECTOR |
| RS5RJ4036B-T2 | VFM STEP-UP DC/DC CONVERTER WITH VOLTAGE REGULATOR AND DETECTOR |
| RS5RJ5045B | VFM STEP-UP DC/DC CONVERTER WITH VOLTAGE REGULATOR AND DETECTOR |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| RS5RJ4036A-T2 | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:VFM STEP-UP DC/DC CONVERTER WITH VOLTAGE REGULATOR AND DETECTOR |
| RS5RJ4036B | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:VFM STEP-UP DC/DC CONVERTER WITH VOLTAGE REGULATOR AND DETECTOR |
| RS5RJ4036B-T1 | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:VFM STEP-UP DC/DC CONVERTER WITH VOLTAGE REGULATOR AND DETECTOR |
| RS5RJ4036B-T2 | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:VFM STEP-UP DC/DC CONVERTER WITH VOLTAGE REGULATOR AND DETECTOR |
| RS5RJ5045A | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:VFM STEP-UP DC/DC CONVERTER WITH VOLTAGE REGULATOR AND DETECTOR |
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