Datasheet FSDM0465REWDTU Specification

FSDM0465RE, FSDM0565RE, FSDM07652RE Green Mode Fairchild Power Switch (FPS™)

FSDM0465RE, FSDM0565RE, FSDM07652RE — Green Mode Fairchild Power Switch (FPS™)

October 2007

Features

 Internal Avalanche-Rugged SenseFET  Advanced Burst-Mode Operation Consumes Under

1W at 240V

 Precision Fixed Operating Frequency (66kHz)  Internal Start-up Circuit  Improved Pulse-by-Pulse Current Limiting  Over-Voltage Protection (OVP)  Overload Protection (OLP)  Internal Thermal Shutdown Function (TSD)  Auto-Restart Mode  Under-Voltage Lockout (UVLO) with hysteresis  Low Operating Current (2.5mA)  Built-in Soft-Start

& 0.5W load

AC

Applications

 SMPS for LCD monitor and STB  Adaptor

Description

The FSDM0465RE, FSDM0565RE and FSDM07652RE are an integrated Pulse Width Modulator (PWM) and SenseFET specifically designed for high-performance offline Switch Mode Power Supplies (SMPS) with minimal external components. This device is an integrated high-voltage power-switching regulator that combines an avalanche-rugged SenseFET with a current mode PWM control block. The PWM controller includes an integrated fixed-frequency oscillator, undervoltage lockout, leading-edge blanking (LEB), optimized gate driver, internal soft- start, temp erature-c ompensated precise-current sources for a loop compensation, and self-protection circuitry. Compared with a discrete MOSFET and PWM controller so luti o n , it can red uce total cost; component count, size, and weight; while simultaneously increasing efficiency, productivity, and system reliability. This device is a basic platform well suited for cost-effective designs of flyback converters.

Ordering Information

Product Number Package Marking Code BV

FSDM0465REWDTU FSDM0565REWDTU TO-220F-6L (Forming) DM0565RE 650V 2.2 Ω FSDM07652REWDTU TO-220F-6L (Forming) DM07652RE 650V 1.6 Ω

Note:

1. WDTU: Forming Type.

All packages are lead free per JEDEC: J-STD-020B standard.

FPSTM is a trademark of Fairchild Semiconductor Corporation.

(1)

TO-220F-6L (Forming) DM0465RE 650V 2.6 Ω

DSS

R

DS(ON)

Max.

Typical Circuit

AC

IN

FSDM0465RE, FSDM0565RE, FSDM07652RE — Green Mode Fairchild Power Switch (FPS™)

DC

OUT

V

FB

str

PWM

V

Drain

CC

Source

FSDM0565RE Rev: 00

Figure 1. Typical Flyback Application

Output Power Table

230V

Product

Adapter

AC

(2)

FSDM0465RE 48W 56W 40W 48W FSDM0565RE 60W 70W 50W 60W

FSDM07652RE 70W 80W 60W 70W

Notes:

2. Typical continuous power in a non-ventilated enclosed adapter measured at 50°C ambient.

3. Maximum practical continuous power in an open-frame design at 50°C ambient.

4. 230V

or 100/115VAC with doubler.

AC

(4)

±15%

Open Frame

(3)

Adapter

85–265V

(2)

AC

Open Frame

(3)

Internal Block Diagram

FSDM0465RE, FSDM0565RE, FSDM07652RE — Green Mode Fairchild Power Switch (FPS™)

NC

FB

5

4

0.5/0.7V

I

delay

V

SD

V

CC

V

ovp

TSD

V

CC

+

-

V

ref

Soft-start

V

CC

3

8V/12V

I

FB

2.5R

VCC good

OSC

PWM

R

V

str

6

I

start

V

ref

SQQ

R

Internal

Bias

Gate

driver

Drain

1

LEB

GND

2

VCC good

SQQ

R

V

CL

FSDM0565RE Rev: 00

Figure 2. Functional Block Diagram of FSDM0x65RE

Pin Configuration

TO-220F-6L

6. V

5. NC

4. FB

3. V

2. GND

1. Drain

Figure 3. Pin Configuration (Top View)

Pin Definitions

Pin # Name Description

1Drain 2GNDGround. This pin is the control ground and the SenseFET source.

3V

CC

4FB

5 NC No Connection.

6V

str

SenseFET drain. This pin i s the high -volt age power Se nseFET drain . It is designed to drive the transformer directly.

Power Supply. This pin is the positive supply voltage input. During start-up, the power is supplied b y an inte rna l hig h-v ol tage current source con nec te d to the V

pin. When VCC reaches 12V, the internal high-voltage current source

str

is disabled and the power is supplied from the auxiliary transformer winding. Feedback. This pin is internally connected to the inverting input of the PWM

comparator. The collector of an opto-coupler is typically tied to this pin. For stable operation, a capacitor should be placed between this pin and GND. If the voltage of this pin reaches 6.0V, the overload protection is activated, resulting in shutdown of the FPS™.

Start-up. This pin is connected directly to the high-voltage DC link. At start-up, the internal high- voltag e curr ent source s upplies internal bias an d charges the external capacitor connected to the V ternal current source is disabled.

str

CC

pin. Once VCC reaches 12V, the in-

CC

FSDM0465RE, FSDM0565RE, FSDM07652RE — Green Mode Fairchild Power Switch (FPS™)

Absolute Maximum Ratings

The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings. T

Symbol Parameter Value Unit

BV

DSS

V

str

I

DM

I

D

E

AS

V

CC

V

FB

(Watt H/S) Total Power Dissipation (TC=25°C) 45 W

P

D

T

J

T

A

T

STG

Notes:

5. Repetitive rating: Pulse width limited by maximum junction temperature.

6. L=14mH, starting TJ=25°C.

Drain Source Breakdown Voltage 650 V Max. Voltage at Vstart pin 650 V

FSDM0465RE TC=25°C 9.6

Drain Current Pulsed

(5)

FSDM0565RE TC=25°C 11

FSDM07652RE T

FSDM0465RE

Continuous Drain Current

FSDM0565RE

FSDM07652RE

Single Pulsed Avalanche Energy

Supply Voltage 20 V Input Voltage Range -0.3 to V

Operating Junction Temperature Internally limited °C Operating Ambient Temperature -25 to +85 °C Storage Temperature -55 to +150 °C ESD Capability, HBM Model

(All pins except V

and FB)

str

ESD Capability, Machine Model (All pins except V

and FB)

str

= 25°C, unless otherwise specified.

A

=25°C 15

C

T

=25°C 2.2

C

=100°C 1.4

T

C

T

=25°C 2.8

C

=100°C 1.7

T

C

T

=25°C 3.8

C

=100°C 2.4

T

C

FSDM0465RE

(6)

FSDM07652RE 370

(GND-V

2.0

str/VFB

300

str/VFB

CC

=1.5kV)

=225V)

A

DC

A

mJFSDM0565RE 190

V

kV

V

FSDM0465RE, FSDM0565RE, FSDM07652RE — Green Mode Fairchild Power Switch (FPS™)

Thermal Impedance

TA=25°C, unless otherwise specified.

Symbol Parameter Value Unit

(7)

θ

JA

θ

JC

Notes:

7. Free-standing, with no heat-sink, under natural convection.

8. Infinite cooling condition - refer to the SEMI G30-88.

Junction-to-Ambient Thermal Resistance 49.90 °C/W

(8)

Junction-to-Case The rmal Resistance 2.78 °C/W

FSDM0465RE, FSDM0565RE, FSDM07652RE — Green Mode Fairchild Power Switch (FPS™)

Electrical Characteristics

TA = 25°C unless otherwise specified.

Symbol Parameter Condition Min. Typ. Max. Unit

SenseFET SECTION

V

I

DSS

R

DS(ON)

C

t

d(on)

t

d(off)

OSS

t

Zero Gate Voltage Drain Current

Static Drain Source on Resistance

Output Capacitance

Turn-On Delay Time

Rise Time

r

Turn-Off Delay Time

Fall Time

f

CONTROL SECTION

f

Δf

STABLE

Δf

D

V

START

V

STOP

t

OSC

I

FB

MAX

MIN

S/S

Switching Frequency VFB = 3V 60 66 72 kHz Switching Frequency Stability 13V ≤ VCC ≤ 18V 0 1 3 % Switching Frequency Variation Feedback Source Current VFB = GND 0.7 0.9 1.1 mA

Maximum Duty Cycle

Minimum Duty Cycle 0 %

UVLO Threshold Voltage

Internal Soft-Start Time VFB = 3 10 15 ms

(9)

= 650V, V

FSDM0465RE

FSDM0565RE

FSDM07652RE

DS

V

DS

V

DS

V

DS

V

DS

V

DS

= 520V, V = 650V, V = 520V, V = 650V, V = 520V, V

FSDM0465RE

= 10V, ID = 2.5A

V

GS

FSDM07652RE 1.40 1.60 FSDM0465RE

VGS = 0V, VDS = 25V, f = 1MHz FSDM07652RE 100 FSDM0465RE

VDD = 325V, ID = 5A FSDM07652RE 22 FSDM0465RE

VDD = 325V, ID = 5A FSDM07652RE 60 FSDM0465RE

VDD = 325V, ID = 5A FSDM07652RE 115 FSDM0465RE

VDD = 325V, ID = 5A FSDM07652RE 65

(10)

-25°C ≤ TA ≤ 85°C 0 ±5 ±10 %

FSDM0465RE 77 82 87 % FSDM0565RE 77 82 87 % FSDM07652RE 75 80 85 %

V

= GND 1 1 12 13 V

FB

VFB = GND 789V

= 0V 250

GS

= 0V, TC = 125°C 250

GS

= 0V 500

GS

= 0V, TC = 125°C 500

GS

= 0V 500

GS

= 0V, TC = 125°C 500

GS

2.20 2.60

60

23

20

65

27

µA

ΩFSDM0565RE 1.76 2.20

pFFSDM0565RE 78

nsFSDM0565RE 22

nsFSDM0565RE 52

nsFSDM0565RE 95

nsFSDM0565RE 50

FSDM0465RE, FSDM0565RE, FSDM07652RE — Green Mode Fairchild Power Switch (FPS™)

Electrical Characteristics (Continued)

= 25°C unless otherwise specified.

T

A

Symbol Parameter Condition Min. Typ. Max. Unit

BURST MODE SECTION

V

BURH

V

BURL

Burst Mode Voltages

PROTECTION SECTION

V

SD

I

DELAY

t

LEB

Shutdown Feedback Voltage VFB ≥ 5.5V 5.5 6.0 6.5 V Shutdown Delay Current VFB = 5V 2.8 3.5 4.2 µA Leading-Edge Blanking Time 250 ns

FSDM0465RE VFB = 5V, VCC = 14V 1.60 1.80 2.00

I

LIMIT

Peak Current Limit

(11)

FSDM07652RE V

V

T

OVP

SD

Over-Voltage Protection 18 19 20 V Thermal Shutdown Temperature

(10)

TOTAL DEVICE SECTION

I

OP

OP(MIN)

I

OP(MAX)

Operating Supply Current

(12)

Notes:

9. Pulse test: Pulse width ≤ 300µS, duty cycle ≤ 2%.

10. These parameters, although guaranteed at the design, are not tested in production.

11. These parameters indicate the inductor current.

12. This parameter is the current flowing into the control IC.

VCC = 14V 0.7 V VCC = 14V 0.5 V

= 5V, VCC = 14V 2.00 2.25 2.50

FB

= 5V, VCC = 14V 2.20 2.50 2.70

FB

130 145 160 °C

VFB = GND, VCC = 14V VFB = GND, VCC = 10V

2.5 5.0 mAI

VFB = GND, VCC = 18V

AFSDM0565RE V

Comparison Between FS6M0765RTC and FSDM0x65RE

Function FS6M0765RTC FSDM0x65RE FSDM0x65RE Advantages

 Gradually increasing current limit during

soft-start reduces peak current and voltage component stresses

 Eliminates external soft-start components

in most applications

 Reduces or eliminates output overshoot  Improves light-load efficiency

 Reduces no-load consumption

Soft-Start

Burst-Mode Operation

Adjustable soft-start time using an external capacitor

 Built into controller  Output voltage

drops to around half

Internal soft-start with typically 10ms (fixed)

 Built into controller  Output voltage fixed

FSDM0465RE, FSDM0565RE, FSDM07652RE — Green Mode Fairchild Power Switch (FPS™)

Typical Performance Characteristics

These characteristic graphs are normalized at TA= 25°C.

FSDM0465RE, FSDM0565RE, FSDM07652RE — Green Mode Fairchild Power Switch (FPS™)

Operating C urrent

1.2

1.0

0.8

)

op

0.6

(I

0.4

0.2

0.0

-25 0 25 50 75 100 125 150 Junc t ion Temperat ure [ ° C ]

Start T hers hold Volt age

1.2

1.0

0.8

)

start

0.6

(V

0.4

0.2

0.0

-25 0 25 50 75 100 125 150 Junc t ion Temperat ur e [ ° C]

Figure 4. Operating Current vs. Temp. Figure 5. Start Threshold Voltage vs. Temp.

1.2

1.0

0.8

)

stop

0.6

(V

0.4

Stop T hr es hold Voltage

0.2

1.2

1.0

0.8

)

osc

0.6

(f

0.4

Operating F requenc y

0.2

0.0

-25 0 25 50 75 100 125 150 Junc t ion Temperat ure [ ° C ]

0.0

-25 0 25 50 75 100 125 150 Junc t ion Temperat ure [ ° C ]

Figure 6. Stop Threshold Voltage vs. Temp. Figure 7. Operating Frequency vs. Temp.

1.2

1.0

0.8

)

MAX

0.6

(D

0.4

Maximum Duty Cycle

0.2

0.0

-25 0 25 50 75 100 125 150 Junc t ion Temperat ure [ ° C ]

1.2

1.0

0.8

)

FB

0.6

(I

0.4

FB Sourc e C urrent

0.2

0.0

-25 0 25 50 75 100 125 150 Junc t ion Temperat ure [ ° C ]

Figure 8. Maximum Duty Cycle vs. Temp. Figure 9. Feedback Source Current vs. Temp.

Typical Perfo rmance Characteristics (Continued)

These characteristic graphs are normalized at T

= 25°C.

A

FSDM0465RE, FSDM0565RE, FSDM07652RE — Green Mode Fairchild Power Switch (FPS™)

Shutdow n F B Volt age

1.2

1.0

0.8

)

SD

0.6

(V

0.4

0.2

0.0

-25 0 25 50 75 100 125 150 Junc t ion Temperat ure [ ° C ]

Shutdow n D elay C urrent

1.2

1.0

0.8

)

0.6

DELAY

(I

0.4

0.2

0.0

-25 0 25 50 75 100 125 150 Junc t ion Temperat ure [ ° C ]

Figure 10. Shutdown Feedback Voltage vs. Temp. Figure 11. Shutdown Delay Current vs. Temp.

1.2

1.0

0.8

)

ovp

0.6

(V

0.4

0.2

Over-Volt age Prot ec t ion

0.0

-25 0 25 50 75 100 125 150 Junc t ion Temperat ur e [ ° C]

1.2

1.0

0.8

)

FBE

0.6

(V

0.4

0.2

FB Burs t -M ode Enable Volt age

0.0

-25 0 25 50 75 100 125 150 Junc t ion Temperat ure [ ° C ]

Figure 12. Over-Voltage Protection vs. Temp. Figure 13. Burst-Mode Enable Voltage vs. Temp.

1.2

1.0

0.8

)

0.6

over

(I

0.4

(Self prot ec t ion)

Peak C urrent Lim it

0.2

0.0

-50 -25 0 25 50 75 100 125 Junc t ion Temperat ure [ ° C]

FB Burs t-Mod e D isable Volt age

1.2

1.0

0.8

)

0.6

FBD

(V

0.4

0.2

0.0

-25 0 25 50 75 100 125 150 Junc t i on Temperat ur e [ ° C]

Figure 14. Burst-Mode Disable Voltage vs. Temp. Figure 15. Current Limit vs. Temp.

Typical Perfo rmance Characteristics (Continued)

These characteristic graphs are normalized at T

1.2

1.0

0.8

0.6

0.4

Soft-Start Time

(Normalized to 25°C)

0.2

0.0

-50 -25 0 25 50 75 100 125

Junc t ion Tempera tu re [ °C]

Figure 16. Soft-Start Time vs. Temp.

= 25°C.

A

FSDM0465RE, FSDM0565RE, FSDM07652RE — Green Mode Fairchild Power Switch (FPS™)

.

FSDM0465RE, FSDM0565RE, FSDM07652RE — Green Mode Fairchild Power Switch (FPS™)

Functional Description

1. Start-up: In previous generations of Fairchild Power

Switches (FPS™), the V resistor to the DC input voltage line. In this generation,

the start-up resistor is replaced by an internal highvoltage current source. At start-up, the internal highvoltage current source supplies the internal bias and charges the external capacitor (C

VCC pin, as illustrated in Figure 17. When VCC reaches 12V, the FSDM0x65RE begins switching and the internal

high-voltage current source is disabled. The FSDM0x65RE continues norm al s witc hin g operation and the power is supplied from the auxiliary transformer winding unless V

V

CC

8V/12V

goes below the stop voltage of 8V.

CC

3

pin had an external start-up

CC

) connected to the

vcc

V

C

Vcc

I

start

Vref

VCC good

DC

V

str

6

2.1 Pulse-by-Pulse Current Limit: Because currentmode control is employed, the peak current through the SenseFET is limited by the inverting input of PWM comparator (V

*) as shown in Figure 18. Assuming that

FB

the 0.9mA current source flows only through the internal resistor (2.5R + R = 2.8kΩ), the cathode volta ge of diode D2 is about 2.5V. Since D1 is blocked when the fe edbac k voltage (V

) exceeds 2.5V, the maximum voltage of the

FB

cathode of D2 is clamped at this voltage, thus clamping V

*. Therefore, the peak value of the current through

FB

the SenseFET is limited.

2.2 Leading Edge Blanking (LEB): At the instant the internal SenseFET is turned on, a high-current spike occurs through the SenseFET, caused by primary-side capacitance and secondary-side rectifier reverse recovery. Excessive voltage across the R

sense

resistor

would lead to incorrect feedback operation in the current mode PWM control. To counter this effect, the FSDM0x65RE employs a leading-edge blanking (LEB) circuit. This circuit inhibits the PWM comparator for a short time (t

V

O

H11A817A

) after the SenseFET is turned on.

LEB

V

ref

CC

I

KA431

delay

V

FB

4

C

B

I

D1 D2

V

FB

2.5R

+

*

fb

R

-

OSC

Gate

driver

SenseFET

Internal

Bias

FSDM0565RE Rev: 00

Figure 17. Internal Start-up Circuit

2. Feedback Control: FSDM0x65RE employs current-

mode control, as shown in Figure 18. An opto-coupler (such as the H11A817A) and shunt regulator (such as the KA431) are typically used to implement the feedback network. Comparing the feedback voltage with the voltage across the R

resistor, plus an offset voltage,

sense

makes it possible to control the switching duty cycle. When the reference pin voltage of the shunt regulator exceeds the internal reference voltage of 2.5V, the optocoupler LED current increases, pulling down the feedback volt a ge and reducing the duty cycle. This e ve nt typically occurs when the input voltage is increased or the output load is decreased.

OLP

R

sense

FSDM0565RE Rev: 00

V

SD

Figure 18. Pulse-Width-Modulation (PWM) Circuit

3. Protection Circuit: The FSDM0x65RE has several

self-protective functions, such as overload protection (OLP), over-voltage protection (OVP), and thermal shutdown (TSD). Because these protection circuits are fully integrated into the IC without external components, the reliability is im prov ed without increasin g c ost . Once a fault condition occurs, switching is terminated and the SenseFET remains off, which causes V

to fall. When

CC

VCC reaches the UVLO stop v oltage of 8V, the protec tio n is reset and the internal high-voltage current source

charges the VCC capacitor via the V

pin. When V

str

CC

reaches the UVLO start voltage of 12V, the FSDM0x65RE resumes normal operation. In this manner, the auto-restart can alternately enable and disable the switching of the power SenseFET until the fault condition is eliminated (see Figure 19).

FSDM0465RE, FSDM0565RE, FSDM07652RE — Green Mode Fairchild Power Switch (FPS™)

Fault

Power

V

DS

on

V

CC

12V

8V

FSDM0565RE Rev: 00

Normal

operation

occurs

Fault

situation

Fault

removed

t

Normal

operation

Figure 19. Auto Restart Operation

3.1 Overload Protection (OLP): Overload is def ined as

the load current exceeding a pre-set level due to an unexpected event. In this situation, the protection circuit should be activated to protect the SMPS. Even when the SMPS is in normal operation, the overload protection circuit can be activated during the load transition. To avoid this undesired operation, the overload protection circuit is designed to be activated after a specified time to determine whether it is a transient situation or a true overload situation. Because of the pulse-by-pulse current limit capability, the maximum peak current through the SenseFET is limited, and therefore the maximum input power is restricted with a given input voltage. If the output consumes beyond this maximum power, the output voltage (V

) decreases below th e set

O

voltage. This reduces the current through the optocoupler LED, which also reduces the opto-coupler transistor current, thus increasing the feedback voltage

). If VFB exceeds 2.5V, D1 is blocked and the 3.5µA

(V

FB

current source starts to charge CB slowly up to VCC. In this condition, V

continues increasing until it reaches

FB

6V, when the switching operation is terminated, as shown in Figu re 20. The delay time for shutdown is t he time required to charge C

from 2.5V to 6.0V with 3.5µA.

B

A 10 ~ 50ms delay time is typical for most applications.

V

6.0V

2.5V

FB

Overload protection

T12= CFB*(6.0-2.5)/I

T

1

FSDM0565RE Rev: 00

delay

T

2

t

Figure 20. Overload Protection

3.2 Over-Voltage Protection (OVP): If the secondary

side feedback circuit were to malfunction or a solder defect caused an opening in the feedback path, the current through the opto-coupler transistor becomes almost zero. In this event, V

climbs in a si mi la r m anner

FB

to the overload situation, forcing the preset maximum current to be supplied to the SMPS until the overload protection is activated. Because more energy than required is provided to t he outp ut, the output volt a ge ma y exceed the rated voltage before the overload protection is activated, resulting in the breakdown of the devices in the secondary side. To prevent this situation, an overvoltage protection (OVP) circuit is employed. In general,

is proportional to the output voltage and the

V

CC

FSDM0x65RE uses VCC instead of directly monitoring the output voltage. If V

exceeds 19V, an OVP circuit is

CC

activated, resulting in the termination of the switching operation. To avoid undesired activation of OVP during normal operation, V

should be designed below 19V.

CC

3.3 Thermal Shutdown (TSD): The SenseFET and the control IC are built in one package. This makes it easy for the control IC to detect the heat generation from the SenseFET. When the temperature exceeds ~150°C, the thermal shutdown is activated.

4. Soft-Start: The FSDM0x65RE has an internal softstart circuit that increases PWM comparator inverting input voltage, together with the SenseFET current, slowly after it starts up. The typical soft-start time is 10ms. The pulse width to the power switching device is progressively increased to establish the correct working conditions for transformers, inductors, and capacitors. The voltage on the output capacitors is progressively increased with the intention of smoothly establishing the required output volt a ge. It also helps pre vent transformer saturation and reduces the stress on the secondary diode during start-up.

5. Burst Operation: To minimize power dissipation in standby mode, the FSDM0x65RE enters burst-mode operation. As the load decreases, the feedback voltage decreases. As shown in Figure 21, the device automatically enters burst mode when the feedback voltage drops below V

(500mV). At this point,

BURL

switching stops and the output voltages start to drop at a rate dependent on standby current load. This causes the feedback volt age to rise. Once it p a sses V

BURH

(700mV),

switching resumes. The feedback voltage then falls and the process repeats. Burst-mode operation alternately enables and disables switching of the power SenseFET, thereby reducing sw it chi ng loss in standby mode.

Vo

set

V

O

V

FB

0.7V

0.5V

FSDM0465RE, FSDM0565RE, FSDM07652RE — Green Mode Fairchild Power Switch (FPS™)

I

DS

V

DS

FSDM0565RE Rev: 00

Switching

disabled

T1

T2 T3

Switching

disabled

Figure 21. Waveforms of Burst Operation

time

T4

Application Information

Application Output Power Input Voltage Output Voltage (Max. Current)

LCD Monitor 40W

Universal input

(85-265V

AC

)

Features

 High efficiency (>81% at 85V  Low zero load power consumption (<300mW at 240V  Low standby mode power consumption (<800mW at 240V  Low component count  Enhanced system reliability through various protection functions  Internal soft-start (10ms)

AC

input)

AC

input and 0.3W load)

AC

Key Design Notes

 Resistors R102 and R105 are employed to prevent start-up at low input voltage. After start-up, there is no power

loss in these resistors since the start-up pin is internally disconnected after start-up.

 The delay time for ove rlo ad prote ct ion is designed to be abo ut 50ms with C106 of 4 7nF. If a faster tri gge rin g of O LP

is required, C106 can be reduced to 10nF.

 Zener diode ZD102 is used for a safety test, such as UL. When the drain pin and feedback pin are shorted, the

zener diode fail s and remains short, wh ic h c au se s the fu se (F1 ) to be b low n an d prev en ts explosion of th e o pto-coupler (IC301). This zener diode also increases the immunity against line surge.

5V (2.0A)

12V (2.5A)

FSDM0465RE, FSDM0565RE, FSDM07652RE — Green Mode Fairchild Power Switch (FPS™)

1. Schematic

BD101

2KBP06M3N257

RT1

5D-9

2

1

4

C102

220nF

275VAC

LF101

23mH

R101

560kΩ

1W

C101

220nF

275VAC

C103

100μF

400V

3

F1

FUSE

250V

2A

ZD102

10V

R102 30kΩ

R105 40kΩ

C106 47nF

50V

R103 56kΩ

2W

FSDM0565RE

6

V

str

5

NC

4

FB

IC1

GND

Drain

2

V

2.2nF

CC

ZD101

22V

C104

1kV

1

3

D101

UF 4007

C105 22μF

50V

D102

UF4004

R104

5Ω

4

5

1

2

3

T1

EER3016

C301

4.7nF

IC301

H11A817A

D202

MBRF10100

10

C201

1000μF

25V

8

D201

MBRF1045

7

C203

1000μF

10V

6

R201

1kΩ

KA431

IC201

R202

1.2kΩ

L201

L202

R203 12kΩ

C202

1000μF

25V

C204

1000μF

10V

C205

47nF

12V, 2.5A

5V, 2A

R204

5.6kΩ

R205

5.6kΩ

FSDM0565RE Rev: 00

Figure 22. Demo Circuit

2. Transformer

EER3016

1

N

/2 N

p

FSDM0465RE, FSDM0565RE, FSDM07652RE — Green Mode Fairchild Power Switch (FPS™)

10

12V

Np/2

2

3

4

5

N

a

FSDM0565RE Rev: 00

9

8

7

N

5V

6

Figure 23. Transformer Schematic Diagram

3. Winding Specification

No Pin (s→f) Wire Turns Winding Method

N

a

4 → 50.2

Insulation: Polyester Tape t = 0.050mm, 2 Layers

/2 2 → 10.4

N

p

Insulation: Polyester Tape t = 0.050mm, 2 Layers

N

12V

10 → 80.3

Insulation: Polyester Tape t = 0.050mm, 2 Layers

N

5V

7 → 60.3

Insulation: Polyester Tape t = 0.050mm, 2 Layers

/2 3 → 20.4

N

p

Outer Insulation: Polyester Tape t = 0.050mm, 2 Layers

φ

× 1 8 Center Winding

φ

× 1 18 Solenoid Winding

φ

× 3 7 Center Winding

φ

× 3 3 Center Winding

φ

× 1 18 Solenoid Winding

4. Electrical Characteristics

Pin Specification Remarks

Inductance 1 - 3 520µH ± 10% 100kHz, 1V

nd

Leakage Inductance 1 - 3 10µH Max 2

all short

5. Core & Bobbin

 Core: EER 3016  Bobbin: EER3016  Ae(mm2): 96

6. Demo Circuit Part List

Part Value Note Part Value Note

Fuse D102 UF4004

F101 2A/250V D201 MBRF1045

D202 MBRF10100

NTC ZD101 Zener Diode 22V

RT101 5D-9 ZD102 Zener Diode 10V

Resistor Bridge Diode

R101 560kΩ 1W BD101 2KBP06M 3N257 Bridge Diode R102 30kΩ 1/4W R103 56kΩ 2W Line Filter R104 5Ω 1/4W LF101 23mH Wire 0.4mm R105 40kΩ 1/4W R201 1kΩ 1/4W IC R202 1.2kΩ 1/4W IC101 FSDM0565RE FPS™ (5A,650V) R203 12kΩ 1/4W IC201 KA431 (TL431) Voltage reference R204 5.6kΩ 1/4W IC301 H11A817A Opto-coupler R205 5.6kΩ 1/4W

FSDM0465RE, FSDM0565RE, FSDM07652RE — Green Mode Fairchild Power Switch (FPS™)

Capacitor

C101 220nF/275V C102 220nF/275V

AC AC

Box Capacitor

Box Capacitor C103 100µF/400V Electrolytic Capacitor C104 2.2nF/1kV Ceramic Capacitor C105 22µF/50V Electrolytic Capacitor C106 47nF/50V Ceramic Capacitor C201 1000µF/25V Electrolytic Capacitor C202 1000µF/25V Electrolytic Capacitor C203 1000µF/10V Electrolytic Capacitor C204 1000µF/10V Electrolytic Capacitor C205 47nF/50V Ceramic Capacitor C301 4.7nF Polyester Film Cap.

Inductor

L201 5µH Wire 1.2mm L202 5µH Wire 1.2mm

Diode

D101 UF4007