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Analog Discrete Interface & Logic Optoelectronics

페어차일드코리아

대기전력대기전력 11W W 구현구현 –– Green FPSGreen FPS

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Analog Discrete Interface & Logic Optoelectronics

전원전원 회로회로 ((Power Supply) Power Supply)

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Analog Discrete Interface & Logic Optoelectronics

전원전원 회로회로 ((Power Supply) Power Supply)

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Analog Discrete Interface & Logic Optoelectronics

스위칭

VO(출력전압)

스위칭 주파수 : 20kHz 이상cf) 가청(可聽)주파수 : 20Hz ~ 20kHz

전원전원 회로회로 ((Power Supply) Power Supply) -- 스위칭스위칭

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Analog Discrete Interface & Logic Optoelectronics

Ploss (손실) = Pin – Po = Vin · Iin - Vo · Io

Ploss

Po

Ploss

Po

Ploss

Po

Ploss

Po

Ploss

Pin

전부하(Full Load)

무부하(No Load)

전원전원 회로회로 ((Power Supply) Power Supply) -- 손실손실

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Analog Discrete Interface & Logic Optoelectronics

대기대기 전력전력 11W W 구현구현 방법방법 –– 불필요한불필요한 부하부하 차단차단

1. Output voltage disconnection (불필요한 출력 전압 끊음)

2. Output voltage drop (출력전압 낮춤)

3. Auxiliary power supply (보조 전원 사용)

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Analog Discrete Interface & Logic Optoelectronics

대기전력대기전력 -- Output DisconnectionOutput Disconnection

stand-by

Vin

VO1

Control IC VO2

VO3

7805 μ- COM

VCC

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Analog Discrete Interface & Logic Optoelectronics

Vin

VO1

Control IC VO2

VO3

7805

stand-by

μ- COM

VCC

대기전력대기전력 -- Output Voltage DropOutput Voltage Drop

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Analog Discrete Interface & Logic Optoelectronics

Vin

VO1

MainControl

IC

VO3

μ- COM

VCC

VO2

Auxil.Control

IC

VCC

stand-by

Enable

대기전력대기전력 –– Auxiliary Power SupplyAuxiliary Power Supply

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Analog Discrete Interface & Logic Optoelectronics

Reducing the switching freq.→ skip mode→ burst mode

대기전력대기전력 11W W 구현방법구현방법 –– 전원회로전원회로 손실손실 최소화최소화

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Analog Discrete Interface & Logic Optoelectronics

가청가청 스위칭스위칭 주파수주파수 구현구현 방법방법

several kHz

above 20kHz

several 100Hzabove 20kHz

- good regulation- high audible noise

- poor regulation- low audible noise

Skip mode

Burst mode

Normal mode

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Analog Discrete Interface & Logic Optoelectronics

페어차일드의페어차일드의 선택선택 -- Burst Mode IBurst Mode I

- detecting the burst mode automatically (without the stand-by signal)

drive circuit

S Q

R

OSC

burst controller

F/B

Vcc D

GND

Vo

VF/B

Ids

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Analog Discrete Interface & Logic Optoelectronics

페어차일드의페어차일드의 선택선택 -- Burst Mode IIBurst Mode II

VF/B

Ids

drive circuit

S Q

R

OSCburst controller

F/B

Vcc D

GND

Vo

- fixing the peak current level during the switching period

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Analog Discrete Interface & Logic Optoelectronics

페어차일드의페어차일드의 선택선택 -- Burst Mode III Burst Mode III (burst + output drop)(burst + output drop)

drive circuit

S Q

R

OSC

burst controller

F/B

Vcc D

GND

Vo2

Vo1

Stand-by

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Analog Discrete Interface & Logic Optoelectronics

- Burst mode is activated by the stand-by signal

Vcc

Stand-by

Ids

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Analog Discrete Interface & Logic Optoelectronics

페어차일드 Green FPS 제품

ApplicationStandby PowerBurst TypeProduct ID

1WType IIIFSCQ1565RT

1WType IIIFSCQ1265RT CTV

1WType IIIFSCQ0765RT

1W @ Po=0.5WType IFSDM07652RLCD Monitor

1W @ Po=0.5WType IFSDM0565R

0.8W @ Po=0.3WType IIFSDX0365RNDVDP / STB

0.8W @ Po=0.3WType IIFSDX0265RN

1W @ Po=0.5WType IIFSDX0165RNAux PS / DVDP

1W @ Po=0.5WType IIFSDX321

1W @ Po=0.5WType IIFSDL312Auxiliary PS

1W @ Po=0.5WType IFSDM311

0.1W @ no loadType IFSD210Charger

0.45W @ no loadType IFSD200

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Analog Discrete Interface & Logic Optoelectronics

FPSFPSTMTM Family Family 응용응용 분야분야

LCD

FSDM311FSDL312FSDx0265RNFSD1000

FS8S0765RCBFS8S0965RCBFS6S1265REFS6S1565RB

FSDM0565RFSDM07652RFS6M12653RTC

FSDM311FSD200FSD210

FSCQ0765RTFSCQ15658RTKA5Q0765RTHKA5Q1265RFKA5Q1565RF

Auxiliary power &PC SMPS

Monitor

Color TV

MP3

Adaptor for Camcorder

VCR, SVR, STB & DVCD

Printer & OA

Note PC Adaptor

GreenFPSTM

FSDx321FSDL0165RNFSDx0265RNFSDx0365RN

[ Charger Applications ]

Mobile phone PDA

*Under developmentGreen FPSTM in blue

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