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부품번호 | MH2501SC 기능 |
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기능 | Easy Multi Interleave Controller | ||
제조업체 | Shindengen | ||
로고 | |||
전체 30 페이지수
MH2501SC/MH2511SC APPLICATION NOTE
Easy Multi Interleave
Controller for multi-phase
interleaved PFC
JUL.2012 Ver.1.0
®
Application Note ver.1.0
Shindengen Electric Manufacturing Co., Ltd.
SHINDENGEN
ELECTRIC MFG.CO.,LTD
-1-
5 : Precautions for protective functions
27
6 : Precautions for pattern layouts
6.1: Wiring for main current routes
6.2: GND wiring
6.3: Wiring of components around MOSFET
6.4: Wiring of IC peripheral components
6.5: Pattern layout example
6.5.1: Side A
6.5.2: Side B
28
29
30
30
31
32
Notes
The figures in this document are provisional. For nominal values, please refer to the formal specifications.
[Indication of IC]
Master
Function of master IC only
Master Slave Function common to master IC and slave IC
SHINDENGEN
ELECTRIC MFG.CO.,LTD
-4-
4페이지 2 Operating principles
2.1 Operating principles of current-critical PFC with ON range control
Fig. 4 Critical operation Fig. 5 Waveform of a single switching cycle
This IC employs a current-critical system. As shown in Fig. 4, the choke current IL forms triangle
waves, starting and ending at 0 A repeatedly. The IC also uses an ON range control system. The
ON range Ton is determined by the load and is fixed. The OFF range Toff varies with the input
voltage Vin at every switching. The switching period varies.
The following formulas give the currents:
Ton and L are fixed. The peak value of IL, IL(peak), is proportional to Vin. Since Vin is sinusoidal,
IL(peak) is sinusoidal. (Formula 1)
IL( peak)
Vin
Ton
L
[A]
...(1)
The switching frequency is significantly higher than the AC commercial frequency. Vin is
considered constant during a single switching cycle (Fig. 5).
The input current Iin equals IL(ave), which is IL with its high frequency component removed by the
capacitor Cin and averaged. Since IL is a triangle wave, IL(ave) is half of IL(peak). (Formula 2)
I in
IL(ave)
IL(
peak )
2
[A]
...(2)
We substitute Formula 1 into Formula 2.
I in
IL(ave)
IL( peak)
2
Vin Ton
2L
[A]
...(3)
As Formula 3 shows, Iin is proportional to Vin due to the ON range control of this IC. The power
factor is improved. Fig. 6 shows waveform examples on the circuit.
Fig. 6 Waveform examples on the circuit
SHINDENGEN
ELECTRIC MFG.CO.,LTD
-7-
7페이지 | |||
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구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
MH2501SC | Easy Multi Interleave Controller | Shindengen |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |