KA2S0965-TU [FAIRCHILD]

Fairchild Power Switch(SPS); 飞兆功率开关（ SPS ）


型号：	KA2S0965-TU
厂家：	FAIRCHILD SEMICONDUCTOR
描述：	Fairchild Power Switch(SPS) 飞兆功率开关（ SPS ）稳压器开关式稳压器或控制器电源电路开关式控制器局域网
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中文：	中文翻译
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www.fairchildsemi.com

KA2S0965/KA2S09655

Fairchild Power Switch(SPS)

Features

Description

• Wide operatimg frequency range up to (150kHz)

• Pulse by pulse over current limiting

• Over load protection

• Over voltage protecton (Min. 23V)

• Internal thermal shutdown function

• Under voltage lockout

• Internal high voltage sense FET

• External sync terminal

• Latch up Mode

The SPS product family is specially designed for an offline

SMPS with minimal external components. The SPS consist

of high voltage power SenseFET and current mode PWM

Controller IC. control IC features a trimmed oscillator, under

voltage lock-out, leading edge blanking, optimized gate turn-

on/turn-off driver, thermal shut down protection, over volt-

age protection, temperature compensated precision current

sources for loop compensation and fault protection circuit.

Compared to discrete MOSFET and controller or RCC

switching converter solution, a SPS can reduce total compo-

nent 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 Monitor power

supply.

TO-3P-5L

1. DRAIN 2. GND 3. Vcc 4. FB 5. Sync

Internal Block Diagram

#3 V

#1 DRAIN

Internal

bias

32V

Vref

SFET

Good

logic

#5 Sync

#4 FB

−

OSC

6.4V

−

L.E.B

0.1V

2.5R

2µA

1mA

#2 GND

−

7.5V

25V

Thermal S/D

OVER VOLTAGE S/D

Power on reset

−

Rev. .5.0

KA2S0965/KA2S09655

Absolute Maximum Ratings

Characteristic

Symbol

Value

650

Unit

Drain-source (GND) voltage ⁽¹⁾

DSS

DGR

Drain-Gate voltage (R =1MΩ)

650

Gate-source (GND) voltage

Drain current pulsed ⁽²⁾

±30

36.0

950

Single pulsed avalanche energy ⁽³⁾

Continuous drain current (T =25°C)

9.0

Continuous drain current (T =100°C)

5.8

Supply voltage

Analog input voltage range

−0.3 to V

170

W/°C

°C

Total power dissipation

Derating

1.33

OPR

Operating temperature

Storage temperature

−25 to +85

STG

−55 to +150

°C

Notes:

1.Tj=25°C to 150°C

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

3.L=20mH, V =50V, R =27Ω, starting Tj=25 °C

KA2S0965/KA2S09655

Electrical Characteristics (SFET part)

(Ta = 25°C unless otherwise specified)

Characteristic

Symbol

Test condition

Min.

Typ. Max. Unit

Drain-source breakdown voltage

BVDSS

=0V, I =50µA

650

−

=Max., Rating,

=0V

−

µA

Zero gate voltage drain current

IDSS

=0.8Max., Rating,

−

200

µA

=0V, T =125°C

Static drain-source on resistance ^(note)RDS(ON)

=10V, I =4.5A

−

5.0

−

0.96

−

1.2

−

Ω

Forward transconductance ^(note)

Input capacitance

Output capacitance

Reverse transfer capacitance

Turn on delay time

Rise time

gfs

Ciss

Coss

Crss

td(on)

=50V, I =4.5A

1750

190

−

=0V, V =25V,

−

f=1MHz

−

180

=0.5BV , I =9.0A

DSS D

(MOSFET switching

time are essentially

independent of

−

Turn off delay time

Fall time

td(off)

−

operating temperature)

−

Total gate charge

(gate-source+gate-drain)

=10V, I =9.0A,

=0.5BV (MOSFET

DSS

−

switching time are

essentially independent of

operating temperature)

Gate-source charge

Qgs

Qgd

−

Gate-drain (Miller) charge

35.4

Note:

Pulse test: Pulse width < 300µS, duty cycle < 2%

S = ---

KA2S0965/KA2S09655

Electrical Charcteristics (CONTROL part)

(Ta = 25°C unless otherwise specified)

Characteristic

REFERENCE SECTION

Output voltage ⁽¹⁾

Symbol

Test condition

Min.

Typ. Max.

Unit

Vref

Ta=25°C

4.80

5.00

0.3

5.20

0.6

Temperature Stability ⁽¹⁾⁽²⁾

OSCILLATOR SECTION

Initial accuracy

−25°C≤Ta≤+85°C

−

mV/°C

Vref/∆T

OSC

Ta=25°C

−

±5

±10

6.8

kHz

Frequency change with temperature ⁽²⁾

Sync threshold voltage⁽³⁾

PWM SECTION

−25°C≤Ta≤+85°C

Vfb=5V

∆F/∆T

SYTH

6.0

6.4

Dmax

Maximum duty cycle

−

FEEDBACK SECTION

Feedback source current

Shutdown delay current

Ta=25°C, Vfb=GND

Ta=25°C, 5V≤Vfb≤V

0.8

1.4

1.2

2.2

delay

1.8

µA

OVER CURRENT PROTECTION SECTION

5.28

4.40

6.00

5.00

6.72

5.60

KA2S0965

Over current protection

I (max)

KA2S09655

UVLO SECTION

th(H)

Start threshold voltage

Minimum operating voltage

TOTAL STANDBY CURRENT SECTION

Start current

−

th(L)

After turn on

=14V

0.1

0.3

0.55

OPR

Operating supply current

(control part only)

Ta=25°C

zener voltage

=20mA

32.5

SHUTDOWN SECTION

Shutdown Feedback voltage

Thermal shutdown temperature (Tj) ⁽¹⁾

SOFT START SECTION

Soft start current

−

6.9

7.5

8.1

140

160

−

°C

Sync & S/S=GND

=2V

0.8

4.7

−

Soft start voltage

5.0

5.3

NOTE:

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

2. These parameters, although guaranteed, are tested in EDS(water test) process

3.The amplitude of the sync. pulse is recommended to be between 2V and 3V for stable sync. function.

KA2S0965/KA2S09655

Typical Performance Characteristics

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

Fig.2 Feedback Source Current

Fig.1 Operating Frequency

1.2

1.15

1.1

1.2

1.15

1.1

1.05

Ifb

IFB

Fosc

0.95

0.9

0.85

0.8

0.85

0.8

-25

75 100 125 150

- 25

25 50 75 100 125 150

Temperature [°C]

Figure 1. Operating Frequency

Figure 2. Feedback Source Current

Fig.3 Operating Current

Fig.4 Max Inductor Current

1.1

1.05

1.2

1.15

1.1

L(MAX)

Ipeak 1

0.95

0.9

1.05

Iop

OPR

0.95

0.9

0.85

0.8

0.85

0.8

-25

25 50

75 100 125 150

-25

25 50 75 100 125 150

Temperature [°C]

Figure 3. Operating Current

Figure 4. Max. Inductor Current

Fig.5 Start up Current

Fig.6 Start Threshold Voltage

1.5

1.15

1.1

1.3

1.1

0.9

0.7

0.5

1.05

th(H)

Vstart

Istart

0.95

0.9

0.85

-25

25 50 75 100 125 150

-25

25 50 75 100 125 150

Temperature [°C]

Figure 5. Start up Current

Figure 6. Start Threshold Voltage

KA2S0965/KA2S09655

Typical Performance Characteristics ^(Continued)

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

Fig.7 Stop Threshold Voltage

1.15

Fig.8 Maximum DutyCycle

1.15

1.1

1.05

th(L)

Vstop 1

Dmax 1

0.95

0.9

0.85

-25

25 50 75 100 125 150

-25

25 50 75 100 125 150

Temperature [°C]

Figure 7. Stop Threshold Voltage

Figure 8. Maximum Duty Cycle

Fig.10 Shutdown Feedback Voltage

Fig.9 Vcc Zener Voltage

1.2

1.15

1.1

1.05

0.95

0.9

1.1

1.05

Vsd

0.95

0.9

0.85

0.8

0.85

-25

75 100 125 150

-25

75 100 125 150

Temperature [°C]

Figure 9. V

Zener Voltage

Figure 10. Shutdown Feedback Voltage

Fig.11 Shutdown DelayCurrent

Fig.12 Over Voltage Protection

1.15

1.2

1.15

1.1

1.05

Idelay

Vovp

0.95

0.9

0.85

0.8

0.95

0.9

0.85

-25

25 50

75 100 125 150

-25

25 50 75 100 125 150

Temperature [°C]

Figure 11. Shutdown Delay Current

Figure 12. Over Voltage Protection

KA2S0965/KA2S09655

Typical Performance Characteristics ^(Continued)

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

Fig.13 Soft Start Voltage

1.15

Fig.14 Drain Source Turn-on

Resistance

2.5

1.1

1.05

1.5

Vss

Rdson

0.95

0.9

0.5

0.85

-25

75 100 125 150

-25

25 50 75 100 125 150

Figure 14. Drain Source Turn-on Resistance

Figure13. Soft Start Voltage

KA2S0965/KA2S09655

Package Dimensions

TO-3P-5L

KA2S0965/KA2S09655

Package Dimensions ^(Continued)

TO-3P-5L (Forming)

KA2S0965/KA2S09655

Ordering Information

Product Number

KA2S0965-TU

Package

Rating

Over current protection

TO-3P-5L

650V, 9A

KA2S0965-YDTU

TO-3P-5L(Forming)

KA2S09655-TU

TO-3P-5L

650V, 9A

KA2S09655-YDTU

TO-3P-5L(Forming)

TU : Non Forming Type

YDTU : Forming Type

KA2S0965/KA2S09655

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

INTERNATIONAL. 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

9/7/00 0.0m 001

Stock#DSxxxxxxxx

2000 Fairchild Semiconductor International

KA2S0965-TU [FAIRCHILD]

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