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FSDH0165

Fairchild Power Switch(FPS) Features

Description

• • • • • • • • • •

The FSDH0165 is specially designed for an off-line SMPS with minimal external components. The FSDH0165 is a monolithic high voltage power switching regulator that combine the SenseFET(LDMOS) with voltage mode PWM control block. Included PWM controller features integrated fixed oscillator, under voltage lock out, leading edge blanking, optimized gate turn-on/turn-off driver, thermal shut down protection and temperature compensated precision current sources for loop compensation and fault protection circuitry. compared to discrete MOSFET and controller or RCC switching converter solution, a FSDH0165 can reduce total component count, design size, weight and at the same time increase efficiency, productivity, and system reliability. It has a basic platform well suited for cost effective design in a flyback converter.

Single Chip 650V 1A SenseFET PowerSwitch Precision Fixed Operating Frequency (100kHz) Internal Start-up Switch UVLO with Hysterisis (6.7V/8.7V) Over Load Protection (typ. 4.5V) Over Current Protection (typ. 0.6A) Internal Thermal Shutdown Function Secondary Side Regulation Auto-restart mode No load consumption <250mW at 265VAC input

Applications • Charger & Adaptor for Mobile Phone, PDA & MP3 • Auxiliary Power for PC

8-DIPH

1

1.Vstr 2.Vfb 3.4.5.6.GND 7.Vcc 8.Drain

Internal Block Diagram #1 : Vstr UVLO ≤ 6.7V

#7 : Vcc UVLO VREG(5.8V)

UVLO ≥ 8.7V

4.5V VREF

#8 : Drain

INTERNAL BIAS

SFET OSC S

5.8V

Q PWM

5 uA

0.45 mA

R

+

L.E.B _

#2 : Vfb

+ OCP

_

OLP +

Vth

_

S

4.5V

Q R TSD

#3,#4,#5,#6 GND

÷4

Rev.1.0.4 ©2001 Fairchild Semiconductor Corporation


FSDH0165

Absolute Maximum Ratings (Ta=25°C unless otherwise specified) Parameter Maximum Drain Voltage Continuous Drain Current (TC=25°C) Maximum Supply Voltage Input Voltage Range Operating Ambient Temperature Storage Temperature Range

Symbol

Value

Unit

VD,MAX

650

V

ID

0.6

ADC

VCC,MAX

21

V

VFB

−0.3 to VSD

V

TA

−25 to +85

°C

TSTG

−55 to +150

°C

PIN Definitions Pin Number

Pin Name

Pin Function Description

Vstr

This pin connects directly to the rectified AC line voltage source. At start up the internal switch supplies internal bias and charges an external capacitor that connects from the Vcc pin to ground. once this reaches 8.7V, Vstr is isolated internally.

2

Vfb

This pin is the inverting input of the PWM comparator, and it operates normally between 0.5V and 2.5V. It has a 0.45mA current source connected internally and a capacitor and opto coupler connected externally. A feedback voltage of 3.5V to 4.5V triggers overload protection (OLP). There is a time delay due to the 5uA current source, which prevents false triggering under transient conditions but still allows the protection mechanism to operate under true overload conditions.

3,4,5,6

GND

These pins are the control ground and the SenseFET Source.

7

Vcc

This is the positive supply voltage input. During start up, power is supplied to this input from Pin 1. When Vcc reaches the UVLO upper threshold (8.7V), the start up Internal Switch (Vstr) turns off and power is supplied from auxiliary transformer winding.

8

Drain

1

2

This pin is designed to directly drive the converter transformer and is capable of switching a maximum of 650V and 1A.


FSDH0165

Electrical Characteristics (Ta=25°C unless otherwise specified) Parameter

Symbol

Condition

Min.

Typ.

Max.

Unit

650

-

-

V

SENSEFET SECTION Drain-Source Breakdown Voltage Zero gate voltage drain current Static drain-source on Resistance

BVDSS IDSS RDS(ON)

VGS = 0V, ID = 100µA VDS = 520V

-

-

100

µA

ID = 50mA Tj = 25°C

-

15.6

18

ID = 50mA Tj = 100°C

-

25.7

30

Rise Time

TR

VDS = 325V, ID = 300mA

-

100

-

nS

Fall Time

TF

VDS = 325V, lD = 50mA

-

50

-

nS

VST

-

17

-

-

V

Start Threshold Voltage

Vstart

-

8.0

8.7

9.4

V

Stop Threshold Voltage

Vstop

After turn on

6.0

6.7

7.4

V

Initial accuracy

FOSC

Tj = 25°C

90

100

110

kHz

Maximum Duty Cycle

Dmax

Vfb = 3V

64

67

70

%

Minimum Duty Cycle

Dmin

Vfb = 0V

-

0

0

%

Feedback Source Current

IFB

Vfb = 0V

0.40

0.45

0.50

mA

Shutdown feedback Voltage

VSD

4.0

4.5

5.0

V

0.5

0.6

0.7

A

125

145

-

°C

-

-

4

mA

START UP SECTION VSTR Supply Voltage UVLO SECTION

OSCILLATOR SECTION

FEEDBACK SECTION -

CURRENT LIMIT(SELF-PROTECTION)SECTION Peak Current Limit

IOVER

peak inductor current

PROTECTION SECTION Thermal Shutdown Temperature (Tj) (1)

TSD

-

TOTAL DEVICE SECTION Operating Supply Current

IOPR

VCC = 21V (Max)

Note: 1.These parameters, although guaranteed, are not 100% tested in production

3


FSDH0165

Typical Performance Characteristics (These characteristic graphs are normalized at Ta=25°C)

[V] 7.2

Vstop

[V] 8.96

7.1

8.92

7

8.88

6.9

8.84

6.8

8.8

Vstart

8.76

6.7 -25

0

25

50

75

100

125

-25

150 [°C]

Figure 1. Stop Threshold Voltage

0

25

50

75

100

125

150 [°C]

Figure 2. Start Threshold Voltage

[mA] 2.4

Iopr

[A] 0.46

Ifb

2.35 0.44 2.3 2.25

0.42

2.2 0.4 2.15 2.1

0.38 -25

0

25

50

75

100

125

150 [°C]

-25

Figure 3. Operating Supply Current [kHz] 108

Fosc

50

75

100

125

[A] 0.8 0.7

100

0.6

96

0.5

92

0.4

88

0.3

150 [°C]

Ipeak

0.2 -25

-10

0

25

50

75

100

125

Figure 5. Initial Accuracy

4

25

Figure 4. Feedback Source Current

104

84

0

150[°C]

-25

-10

0

25

50

75

100

125

Figure 6. Peak Current Limit

150 [°C]


FSDH0165

Typical Performance Characteristics (Continued) (These characteristic graphs are normalized at Ta=25째C)

[mA] 3.00 2.50

Vstop

[mA]

Vstart

2.50

Vstr

2.00

2.00

1.50

1.50 1.00

1.00

0.50

0.50

0.00

0.00 0

2.5

5

7.5

10

12.5

15

17.5

20 [V]

1

13

Figure 7. Stop/Start Threshold Voltage

1000

[pF]

25

37

49

61

73

85

97[V]

Figure 8. VSTR Supply Voltage

Coss

800

[V]

BVdss

760 100 720 680 10 640 1 0

25

50

75

[V]

Figure 9. Coss vs. Drain Voltage

100

600 -50

0

50

100

[째C] 150

Figure 10. Breakdown vs. Temperature

5


FSDH0165

Application Circuit

VDC Vstart

1

Start-up 8 Drain

PWM 3,4,5&6

BCDMOS 1Chip 2

7 Vfb

6

GND Vcc

Feedback Circuit


FSDH0165

Package Dimensions

8-DIPH

7


FSDH0165

Ordering Information Product Number

Package

Rating

Topr (°°C)

FSDH0165

8-DIPH

650V, 1A

−25°C to +85°C

DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user.

2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.

www.fairchildsemi.com 10/17/01 0.0m 001 Stock#DSxxxxxxxx  2001 Fairchild Semiconductor Corporation


This datasheet has been download from: www.datasheetcatalog.com Datasheets for electronics components.


C.INTEG. DH0165 - Manual Sonigate