Fuji Electric FA5500AP, FA5500AN, FA5501AP, FA5501AN Service Manual

FA5500AP/AN, FA5501AP/AN

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FUJI Power Supply Control IC

Power Factor Correction

FA5500AP/AN FA5501AP/AN

November `02 Fuji Electric Co., Ltd. Matsumoto Factory

FA5500AP/AN, FA5501AP/AN

1.This Data Book contains the product specifications, characteristics, data, materials, and structures as of November 2002. The contents are subject to change without notice for specification changes or other reasons. When using a product listed in this Data Book, be sure to obtain the latest specifications.

2. All applications described in this Data Book exemplify the use of Fuji's products for your reference only. No right or license, either express or implied, under any patent, copyright, trade secret or other intellectual property right owned by Fuji Electric Co., Ltd. is (or shall be deemed) granted. Fuji makes no representation or warranty, whether express or implied, relating to the infringement or alleged infringement of other's intellectual property rights which may arise from the use of the applications descri bed herein.

3. Although Fuji Electric is enhancing product quality and reliability, a small percentage of semiconductor products may become faulty. When using Fuji Electric semiconductor products in your equipment, you are requested to take adequate safety measures to prevent the equipment from causing a physical injury, fire, or other problem if any of the products become faulty. It is recommended to make your design fail-safe, f la m e ret ardant , and free of malfunction.

4.The products introduced in this Data Book are intended for use in the following electronic and electrical equipment w h i ch has normal reliability requirements.

• Computers • OA equipment • Communications equip me nt (t erminal devices)

• Measurement equipment • Machine tools • Audiovisual equipment • Electrical home

appliances • Personal equipment • Industrial robots etc.

5.If you need to use a product in this Data Book for equipment requiring higher reliability than normal, such as for the equipment listed below, it is imperative to contact Fuji Electric to obtain prior approval. When using these products for such equipment, take adequate measures such as a backup system to prevent the equipment from malfunctioning even if a Fuji's product incorporated in the equipment becomes f ault y.

• Transportation equipment (mounted on cars and ships) • Trunk communications equipment

• Traffic-signal control equipment • Gas leakage detectors with an auto-shut-off feature

• Emergency equipment for respondi ng t o disasters and anti-burglary dev ices • Safety devices

6. Do not use products in this Data Book for the equipment requiring strict reliability such as (without limitation)

• Space equipment • Aeronautic equipment • Atomic control equipment

• Submarine repeater equipment • Medical equipment

8. If you have any question about any portion in this Data Book, ask Fuji Electric or its sales agents before using the product. Neither Fuji nor its agents shall be liable for any injury caused by any use of the products not in accordance with i nst ruct i ons set forth herein.

WARNING

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FA5500AP/AN, FA5501AP/AN

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CONTENTS

1. Description ……………. 4

2. Features ……………. 4

3. Outline ……………. 4

4. Types of FA5500A/01A ……………. 4

5. Block diagram ……………. 5

6. Pin assignment ……………. 5

7. Ratings and c h aracteristics ……………. 6 – 8

8. Characteristic c ur ves ……………. 9 – 12

Pages

9. Description of PFC converter ……………. 13 – 14

10. Description of e ac h circuit ……………. 15 – 18

11. Design advice ……………. 19 –25

12. Example of a p pl ic ation circuit ……………. 26

Note

• Parts tolerance and characteristics are not defined in all application described in this Data book. When design an

actual circuit for a product, you must determine parts tolerances and characteristics for safe and economical operation.

FA5500AP/AN, FA5501AP/AN

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1. Description

FA5500A/FA5501A are control ICs for a power factor correction converter using critical conduction mode of operation. This IC uses a CMOS device with high dielectric strength (30V) to implement low power consumption. These ICs contain compensated current sense comparator for light load and open/short protection at feedback (FB) pin. Compensated current sense comparator for light load keeps output voltage constant from no-load to full-load. Open/short protection at FB pin stops output pulses when voltage divider to detect output voltage becomes fault.

2. Features

• Low current consumption by CMOS process Start-up : 20µA(max.), Operating : 1mA(typ.)

• Drive circuit for connecting a power MOSFET directly

• Output peak current, source : 500mA, sink : 1000mA

• Compensated current sense compar ator for light load

• Open/short protection at feedback (FB) pin

• Undervoltage Lockout

FA5500A: 11.5V ON / 9V OFF FA5501A:13V ON / 9V OFF

• Overvoltage protection

• Restart timer

• Package: DIP-8 / SOP-8

3. Outline

SOP-8 DIP-8

0.4 ±0.1

3.9 6 ±0.2

4.9

1.27

4. Types of FA5500A/01A

Type Startup Threshold Package FA5500AP 11.5V(typ.) DIP-8 FA5500AN 11.5V(typ.) SOP-8 FA5501AP 13V(typ.) DIP-8 FA5501AN 13V(typ.) SOP-8

1.8 MAX

0.18 ±0.08

0.65 ±0.25

+0.10

0.20

-0.05

80 −

1.0 ±0.3

3.3

2.54

2.54×3=7.62

9.3

1.5 ±0.3

0.46 ±0.1

6.4

3 MIN 4.5 MAX

0.25

+0.1

- 0.05

7.62

150 −

FA5500AP/AN, FA5501AP/AN

5. Block diagram

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COMP

2.5µA

GND

MUL

VREF(2.5V)

1 2

ERRAMP

VOS(2.0V)

VSP(0.3V)

VOVP (1.09VREF)

OVP

MUL

AOC

VREF(2.5V)

VDD(5.0V)

VOVP(1.09VREF)

VZCD(1.5V/1.33V)

VOS(2.0V) VSP(0.3V)

VZCD(1.5V/1.33V)

REF

TIMER

VCC

UVLO

OVP

OUT

ZCDIS

6. Pin assignment

OUTVCC GND ZCD

8765

1234

FB COMP MUL IS

Pin No. Pin

symbol 1 FB Voltage Feedback Input Input for monitoring PFC output voltage 2 COMP Compensation Output of error amplifier 3 MUL Multiplier Input Input of multiplier for monitoring sinusoidal

4 IS Current Sense Input Input for sensing MOSFET current signal 5 ZCD Zero Current Detect Input Input for detecting that the inductor current

6 GND Ground Ground 7 OUT Output Output for direct driving a power MOSFET 8 VCC Power Supply Power supply for IC

Function Description

waveform

reaches zero

FA5500AP/AN, FA5501AP/AN

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7. Ratings and characteristics

The contents are subject to change without notice. When using a product, be sure to obtain the latest specifications.

(1) Absolute Maximum Ratings

Item Symbol Total Power Supply and Zener Current Icc+Iz 30 mA Supply

Voltage Output Current Sink Source

Input voltage(IS,MUL,FB) Vin -0.3 to 5 V Zero Current Detect Input High State Forward Current Low State Reverse Current

Operating Ambient Temperature Ta -30 to +105 °C Operating Junction Temperature Tj +150 °C Storage Temperature Tstg -55 to +150 °C

Maximum dissipation curve

400mW(SOP)

800mW(DIP)

Zener Clamp (Icc+Iz<30mA) Vcc Self Limiting V

Iin

DIP-8 Pd1 800 mW Power dissipation SOP-8 Pd2 400 mW

Ratings Unit

+1000

-500

-50 10

mA mA

Maximum dissipation Pd [mW]

-30 25 105 150 Ambience temperature Ta(°C)

(2) Recommended Operating Conditions

Item Symbol Min Typ Max Unit

Supply Voltage Vcc 10 12 28 V ZCD pin current Izcd ±3 mA

FA5500AP/AN, FA5501AP/AN

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(3) Electrical Characteristics (Unless otherwise specified, Ta=25°C and Vcc=12V)

ERROR AMPLIFIER(FB,COMP Pin)

Item Symbol Condition Min Typ Max Unit

Voltage Feedback Input Threshold

Line Regulation Regline Temperature stability VdT Ta=-30°C to +105°C ±0.5 mV/°C

Transconductance Gm Ta=25°C 70 90 120 µmho Output Current Io

OVERVOLTAGE COMPARATER (FB Pin)

Item Symbol Condition Min Typ Max Unit

Input Threshold Vthovp 1.075Vfb 1.09Vfb 1.105Vfb V

FB SHORT COMPARATOR(FB Pin)

Item Symbol Condition Min Typ Max Unit

Input Threshold Vthsht 0.1 0.3 0.5 V Pulldown Current Ifb 0.5 2.5 5 µA

MULTIPLIER(COMP,MUL Pin)

Item Symbol Condition Min Typ Max Unit

Input Threshold Pin2(COMP) Dynamic Input Voltage Range Pin3(MUL) Pin2(COMP)

Gain K

K=Pin4Threshold/{Vpin3(Vpin2-Vthcomp)}

Vfb Ta=25°C 2.465 2.500 2.535 V

Vcc=12V to 28V Ta=25°C

Source(Vfb=2.3V) Sink(Vfb=2.7V)

Vthcomp 1.79 2.04 - V

Vpin3 Vpin2

Vpin3=0.5V Vpin2=Vthcomp +1.0V

-50 -20 - mV

0 to 2.5 Vthcomp to Vthcomp +1.0

0.53 0.75 0.97 1/V

10 10

0 to 3.5 Vthcomp to Vthcomp +1.5

µA

ZERO CURRENT DETECTOR (ZCD Pin)

Item Symbol Condition Min Typ Max Unit

Input Threshold Voltage Vthzcd Vin increasing 1.33 1.50 1.87 V Hysteresis Vh Vin decreasing 100 170 300 mV Input Clamp Voltage “H” state “L” state

CURRENT SENSE COMPARATOR (IS Pin)

Item Symbol Condition Min Typ Max Unit

Maximum Current Sense Input Threshold Delay to Output Tphl - 170 400 ns

Vih Vil

Vthis

Idet=+3.0mA Idet=-3.0mA

Vpin1=1.0V Vpin3=3.0V

7.0

0.3

1.3 1.5 1.8 V

7.6

0.6

1.0

FA5500AP/AN, FA5501AP/AN

DRIVE OUTPUT (OUT Pin)

Item Symbol Condition Min Typ Max Unit

Output Voltage Low State Vol Output Voltage High State Voh

Output Voltage Rise Time Tr CL=1.0nF - 50 120 ns Output Voltage Fall Time Tf CL=1.0nF - 25 100 ns

RESTART TIMER

Item Symbol Condition Min Typ Max Unit

Restart Time Delay Tdly 100 200 - µs

UNDERVOLTAGE LOCKOUT (VCC Pin)

Item Symbol Condition Min Typ Max Unit Startup Threshold Von Minimum Operating Voltage

After Turn-On Hysteresis Vhysvcc

TOTAL DEVICE (VCC Pin)

Item Symbol Condition Min Typ Max Unit Power Supply Zener Voltage Vz Icc=25mA 30 33 36 V

Startup Power Supply Current Istart Vcc=8.0V - - 20 µA Operating Power Supply Current Dynamic Operating Power Supply Current

Voff

Icc Vcc=12V 1.0 2.0 mA Iop 50kHz,CL=1.0nF 2.0 4.0 mA

Vcc=12V Isink=200mA Vcc=12V Isouce=200mA

FA5500A 10 11.5 13 V FA5501A 11.5 13 14.5 V

FA5500A 1.8 2.5 3.2 V FA5501A 3.3 4 4.7 V

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- 1.2 3.3 V

7.8 8.4 V

8 9 10 V

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