MH2501SC datasheet(3/33 Pages) SHINDENGEN

Part #	MH2501SC

Description	Easy Multi Interleave Controller for multi-phase interleaved PFC

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Manufacturer	SHINDENGEN [Shindengen Electric Mfg.Co.Ltd]

Direct Link	http://www.shindengen.co.jp/

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3 / 33 page

SHINDENGEN

ELECTRIC MFG.CO.,LTD

- 3 -

Index

1 : Outline

1.1: Features

5

1.2: Block diagram

5

1.3: Pin arrangement diagram

6

1.4: Pin function list

6

2 : Operating principles

For Master IC and/

or Slave IC

2.1： Operating principles of current-critical PFC with

ON range control

7

2.2: Zero current detection

Master

8

2.3: Interleaving

Master

Slave

9-10

2.4: Startup and shutdown sequences

Master

Slave

11

2.5: Output voltage control

Master

12

2.6: Phase compensation

Master

13

2.7: Gate driver

Master

Slave

13

2.8: Protection functions

2.8.1: Overcurrent protection

Master

Slave

14

2.8.2: Output overvoltage protection (OVP)

Master

Slave

14-15

2.8.3: Low input voltage protection and FB pin

open/short protection

Master

15

2.8.4: Output diode short protection

Master

16

2.8.5: VCC pin undervoltage protection (UVLO)

Master

Slave

16

2.8.6: Thermal shutdown

Master

16

2.9：Application circuit

2.9.1: Slave stop protection

17-18

2.9.2: Remote ON/OFF

18

2.9.3: Switching the number of phases

19

2.10: Example of operation waveforms

20

3 : Circuit example

3.1: Typical circuit diagram

21

4 : Determining peripheral circuit constants

4.1: Selecting choke coils

22

4.2: Selecting the MOSFET

23

4.3: Selecting an output diode

23

4.4: Selecting a bypass diode

23

4.5: Adjusting constants for components around Z/C

24

4.6: Adjusting phase compensation

25

4.7: Adjusting the output voltage

25

4.8: Adjusting the overcurrent protection point

26

4.9: Selecting the output capacitor

26

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MH2501SC Datasheet(PDF) 3 Page - Shindengen Electric Mfg.Co.Ltd

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