f9222l_102.pdf

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Quality is our messageQuality is our message

MT5F11478cMT5F11478c

July.25.2002July.25.2002

Introduction

Fuji Smart power deviceFuji Smart power deviceMM--POWER2POWER2for Multifor Multi--oscil lated current resonant type power supplyoscil lated current resonant type power supply

Summary

System: The ideal and Fujis original system

It includes many functions(Soft-switching,stand-by).

DeviceMultiple-chipPowerDeviceM-POWER2contains IC and two MOSFETs in SIP-13pin package.

M-POWER has various types of protection functions.

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Quality is our messageuality is our message


July.25.2002July.25.2002

Features

1. High efficiency (a reduction in SMPS size is possible.)

DC/DC : 92.3%(DC input:400V,output:16V)

PFC+DC/DC :87.0%(AC100V),89.5%(AC200V)

2. Built in stand-by mode (An auxiliary power supply is unnecessary.)

Pin

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Circuit configuration

Mult iMul t i--osc i llated current resonant type pow er supplyosc i llated current resonant typ e power supply

M -PO W ER2

Q 1

Q 2rectificationcircuitorPFC

VP1

VQ1

VQ2

IQ2

IQ1 VG2

VG1 V

VD1,ID1

VD2,ID2

Vo

Normal / Stand-by signal

Ed

PWMPWM

SelfSelf--oscillation circuitoscillation circuit CrCr

TrTr

Q1Q1 ------------ PWM oscillationPWM oscillation

Q2Q2 ------------ selfself--oscillation (driven by winding voltage).oscillation (driven by winding voltage).

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Operation of switching transient

VQ1VQ2

VQ1,VQ2

0

IQ2IQ1IQ1,IQ2

0

VP1

VP1VP3

0

ID1 ID2

ID1,ID2

0

VP2VG2

0

Dead time:Td

VG10

0

Vth(Q2)

VP2

VG2

VP3

Feedback voltage

comparison voltage

Q 1

Q 2rectificationcircuitorPF

C

VP1

VQ1

VQ2

IQ2

IQ1

VG2

VG1 V

VD1,ID1

VD2,ID2

Vo

Normal / Stand-by signal

Ed

PWMPWM

SelfSelf--oscillation circuitoscillation circuitCrCr

TrTr

Feedback voltage

Features of the MultiFeatures of the Multi--oscillationoscillation

1)1) No armNo arm--short circuit.short circuit.

2)2) it is high efficiency at light load too.it is high efficiency at light load too.

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Efficiency comparison

AC200V

65

70

75

80

85

90

95

0 20 40 60 80 100

[W ]

[%]

15VPFC

Output [W]

Efficiency[%]

Vo=15VWith PFC

PFMM-POWER2

PFM V.S. M-POWER2(Muiti oscillation)

It is high efficiency at light load too.

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Switching waveforms

Ultra Low NoiseUltra Low Noise

MOSFETs(Q1,Q2)

0

0

0

0

VQ2

IQ2

VQ1

IQ1

ZVS ZVS+ZCS

ZVS ZVS+ZCS

No surge voltageNo surge voltage

0

0

0

0

VD1

ID1

VD2

ID2

Di

D1

D2

No surge voltageNo surge voltage

Sine wave-like current

Rectangle wave-like voltage

Diodes(Secondary side)

Condition:Ed=400V,Po=65W,Vo=16VCondition:Ed=400V,Po=65W,Vo=16V

VD1:50V /DIVID1:10A /D IVVD2:50V /DIVID2:10A /D IV

5us/D IV

Turn-on : ZVS+ZCSTurn-off : ZVS

No surge voltage at Turn-off

VQ 1 500V /D IV

IQ 1 1A /DIVVQ 2 500V /D IVIQ 2 1A /DIV

5us/D IV

No surge voltage at reverse recovery

Reduction in the noise suppression parts is possible.

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Characteristic

0 20 40 60 80 10070

80

90

100

AC100V

AC200V

DC/DC

Efficiency(%)

Output (W)

EfficiencyEfficiency -- Load characteristic at normal modeLoad characteristic at normal mode

High efficiency

DC/DC : 92.3%

(DC input:400V,output:16V)

PFC+DC/DC:87.0%

(AC100V),89.5%(AC200V)

Down size your SMPS

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Performance

Power saving operation

SoftSoft--start and softstart and soft--end switching of Mend switching of M--POWER2 reduce transformer noise.POWER2 reduce transformer noise.

0

0

0.8A/div

VCS

IP1

2V/div

2ms/div

0

0

0.8A/div

VCS

IP1

2V/div

500s/div

C ondition:AC 100V,Pout=0.5W C ondition:AC 240V,Pout=0.5W

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Characteristic Power saving operation

Input powerInput power output power characteristic at standby modeoutput power characteristic at standby mode

0.0 0.5 1.0 1.5 2.0 2.50.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

Input:Pin[W

]

Output:Po [W]

Pin

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M-POWER2

VDS RDS(ON) VDS RDS(ON) VCC(ON) Tj (OH)

F9221L 500V 0.9 500V 0.9 16.5V125150

M /P

F9222L 500V 0.6 500V 0.6 16.5V125

150

02/09

Type nameM ain -MOSFET Sub-MOSFET Contro l IC

S am ple

External view of M-POWER2

Unit:mmUnit:mm

PKGH:10.2mmW:31.0mmT:3.5mm

Documents

f9222l_102.pdf