Fairchild Semiconductor KA5H0280R, KA5H0265RC, KA5H02659RN, KA5M0265R, KA5M02659RN Datasheet

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KA5x02xx-SERIES

KA5H0265RC, KA5M0265R, KA5L0265R, KA5H02659RN/KA5M02659RN, KA5H0280R, KA5M0280R Fairchi ld Pow er Sw itch( FP S)

Features

• Precision Fixed Operating Frequency (100/67/50kHz)

• Low Start-up Current (Typ. 100uA)

• Pulse by Pulse Current Limiting

• Over Load Protection

• Over Voltage Protection (Min. 25V)

• Internal Thermal Shutdown Function

• Under Voltage Lockout

• Internal High Voltage Sense FET

• Auto-Restart Mode

Description

The Fairchild Power Switch(FPS) product family is specially designed for an off-line SMPS with minimal external components. The Fairchild Power Switch(FPS) consist of high voltage power SenseFET and current mode PWM IC. 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, over voltage protection, and temperature compensated precision current sources for loop compensation and fault protection circuitrycompared to discrete MOSFET and controller or R switching converter solution. The Fairchild Power Switch(FPS) can reduce total component count, design size, weight and at the same time increase efficiency, productivity, and system reliability. It has a basic platf orm well suite d for cost-effe ctive design in either a flyback converter or a forward converter .

TO-220F-4L

1

1. GND

2. Drain

3. Vcc

4. FB

8-DIP TO220-5L

1

1.6.7.8. Drain

2. GND

3. Vcc

4. FB

5. NC

1

1. Drain

2. GND

3. Vcc

4. FB

5. S/S

CC

Internal Block Diagram

V

CC

32V

Soft Start

*

5V

uA

FB

* KA5H0265RC

µ

5

7.5V

27V

A

2.5R

1mA

1R

9V

+

−

+

−

Thermal S/D

OVER VOLTAGE S/D

OSC

−

+

5V

Vref

L.E.B

0.1V

Good

logic

S R

Internal

bias

Q

S R

Power on reset

SFET

Q

DRAIN

GND

Rev.1.0.4

KA5X02XX-SERIES

Absolute Maximum Ratings

(Ta=25°C, unless otherwise specified)

Characteristic Symbol Value Unit KA5x0265xRx

Drain-Gate Voltage (R Gate-Source (GND) Voltage V Drain Current Pulsed Continuous Drain Current (TC=25°C) I Continuous Drain Current (TC=100°C) I Single Pulsed Avalanche Energy Maximum Supply Voltage V Analog Input Voltage Range V

Total Power Dissipation Operating Junction Temperature. T

Operating Ambient Temperature. T Storage Temperature Range. T

KA5x0280R

Drain-Gate Voltage (R Gate-Source (GND) Voltage V Drain Current Pulsed Continuous Drain Current (TC=25°C) I Continuous Drain Current (TC=100°C) I Single Pulsed Avalanche Energy Maximum Supply Voltage V Analog Input Voltage Range V

Total Power Dissipation Operating Junction Temperature. T

Operating Ambient Temperature. T Storage Temperature Range. T

=1MΩ)V

GS

(1)

(2)

DGR

GS

I

DM

D D

E

AS

CC,MAX

FB

P

D

Darting 0.33 W/°C

J A

STG

=1MΩ)V

GS

(1)

(2)

DGR

GS

I

DM

D D

E

AS

CC,MAX

FB

P

D

Darting 0.28 W/°C

J A

STG

650 V ±30 V

8.0 A

2.0 A

1.3 A 68 mJ 30 V

-0.3 to V

SD

42 W

+160 °C

-25 to +85 °C

-55 to +150 °C

800 V ±30 V

8.0 A

2.0 A

1.3 A 90 mJ 30 V

-0.3 to V

SD

35 W

+160 °C

-25 to +85 °C

-55 to +150 °C

DC DC DC

V

DC DC DC

V

Note:

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

2. L = 51mH, starting T

= 25°C

j

2

KA5X02XX-SERIES

Electrical Characteristics (SFET Part)

(Ta=25°C unless otherwise specified)

Parameter Symbol Condition Min. Typ. Max. Unit KA5x0265xRx

Drain-Source Breakdown Voltage BV

Zero Gate Voltage Drain Current I

Static Drain-Source on Resistance Forward Transconductance

(Note)

DSS

R

DS(ON)

gfs VDS=50V, ID=0.5A 1.5 2.5 - S

Input Capacitance Ciss

Reverse Transfer Capacitance Crss - 17 Turn on Delay Time td(on) Rise Time tr - 15 Turn Off Delay Time td(off) - 55 Fall Time tf - 25 Total Gate Charge

(Gate-Source+Gate-Drain)

Qg

Gate-Source Charge Qgs - 3 Gate-Drain (Miller) Charge Qgd - 12 -

VGS=0V, ID=50µA 650 - - V VDS=Max. Rating, VGS=0V - - 50 µA

=0.8Max. Rating,

V

DS

V

=0V, TC=125°C

GS

- - 200 µA

VGS=10V, ID=0.5A - 5.0 6.0 Ω

- 550 -

=0V, VDS=25V,

V

GS

f=1MHz

V

DD

=0.5B V

DSS

, ID=1.0A

-20-

(MOSFET switching time is essentially independent of operating temperature)

V

=10V, ID=1.0A,

GS

V

DS

=0.5B V

(MOSFET

DSS

--35

switching time is essentially independent of operating temperature)

pFOutput Capacitance Coss - 38 -

nS

nC

KA5x0280R

Drain-Source Breakdown Voltage BV

DSS

VGS=0V, ID=50µA 800 - - V VDS=Max. Rating, VGS=0V - - 50 µA

Zero Gate Voltage Drain Current I

Static Drain-Source on Resistance Forward Transconductance

(Note)

Input Capacitance Ciss

DSS

R

DS(ON)VGS

=0.8Max. Rating,

V

DS

V

=0V, TC=125°C

GS

- - 200 µA

=10V, ID=0.5A - 5.6 7.0

gfs VDS=50V, ID=0.5A 1.5 2.5 - S

- 250 -

=0V, VDS=25V,

V

GS

f=1MHz

Reverse Transfer Capacitance Crss - 25 Turn on Delay Time td(on) Rise Time tr - 28 Turn Off Delay Time td(off) - 77 Fall Time tf - 24 Total Gate Charge

(Gate-Source+Gate-Drain)

Qg

Gate-Source Charge Qgs - 15 Gate-Drain (Miller) Charge Qgd - 20 -

Note:

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

2.

1

S

--- -=

R

V

=0.5B V

DD

DSS

, ID=1.0A (MOSFET switching time is essentially independent of operating temperature)

V

=10V, ID=1.0A,

GS

V

=0.5B V

DS

(MOSFET

DSS

switching time is essentially independent of operating temperature)

-21-

--60

Ω

pFOutput Capacitance Coss - 52 -

nS

nC

3

KA5X02XX-SERIES

Electrical Characteristics (Control Part)

(Continued)

(Ta=25°C unless otherwise specified)

Parameter Symbol Condition Min. Typ. Max. Unit UVLO SECTION

Start Threshold Voltage V Stop Threshold Voltage V

START

STOP

VFB=GND 14 15 16 V VFB=GND 8.2 8.8 9.4 V

OSCILLATOR SECTION

Initial Accuracy F

Initial Accuracy F Initial Accuracy F

Frequency Change With Temperature

(2)

OSC

OSC OSC

∆F/∆T-25°C ≤ Ta ≤ +85°C-±5 ±10 %

Maximum Duty Cycle Dmax

KA5H0265xRx KA5H0280R

KA5M0265xRx KA5M0280R

90 100 110 kHz

61 67 73 kHz

KA5L0265R 45 50 55 kHz

KA5H0265xRx KA5H0280R

62 67 72 %

KA5M0265xRx

Maximum Duty Cycle Dmax

KA5M0280R

72 77 82 %

KA5L0265R

FEEDBACK SECTION

Feedback Source Current I Shutdown Feedback Voltage V

FB

SD

Shutdown Delay Current Idelay Ta=25°C, 5V ≤ Vfb ≤ V

Ta=25°C, 0V ≤ Vfb ≤ 3V 0.7 0.9 1.1 mA Vfb ≤ 6.5V 6.9 7.5 8.1 V

456µA

SD

SOFT START SECTION

Soft Start Voltage V Soft Start Current I

SS

KA5H0265RC

4.7 5.0 5.3 V

0.8 1.0 1.2 mA

REFERENCE SECTION

Output Voltage

(1)

Temperature Stability

(1)(2)

Vref Ta=25°C 4.80 5.00 5.20 V

Vref/∆T-25°C ≤ Ta ≤ +85°C-0.30.6mV/°C

CURRENT LIMIT(SELF-PROTECTION)SECTION

Peak Current Limit I Peak Current Limit I

OVER

KA5x02659RN 0.79 0.9 1.01 A KA5x0265Rx

KA5x0280R

1.05 1.2 1.34 A

PROTECTION SECTION

Over Voltage Protection V Thermal Shutdown Temperature

(1)

OVP

T

SD

VCC ≥ 24V 25 27 29 V

- 140 160 - °C

TOTAL DEVICE SECTION

Start-up Current I Operating Supply Current

(Control Part Only)

START

I

OPR

VCC=14V - 100 170 µA V

≤ 28 - 7 12 mA

CC

Note:

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

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

4

Typical Performance Characteristics

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

KA5X02XX-SERIES

Fig.1 Operating Fre quen c y

1.2

1.15

1.1

1.05

Fosc

1

0.95

0.9

0.85

0.8

-25 0 25 50 75 100 125 150

Temperature [°C]

Figure 1. Operating Frequency

Fig.3 Operating Current

1.2

1.15

1.1

1.05

Iop

1

0.95

0.9

0.85

0.8

-25 0 25 50 75 100 125 150

Temperature [°C] Temperature [°C]

1.15

1.05

Ifb

0.95

0.85

Fig.2 Feedbac k Source Curr en t

1.2

1.1

1

0.9

0.8

-25 0 25 50 75 100 125 150

Temperature [°C]

Figure 2. Feedback Source Current

Fig.4 Max Inductor Cur r ent

1

-25 0 25 50 75 100 125 150

Ipeak

I

over

1.1

1.05

0.95

0.9

0.85

0.8

Figure 3. Operating Supply Current

Fig. 5 S t ar t up Current

-25 0 25 50 75 100 125 150

Istart

1.5

1.3

1.1

0.9

0.7

0.5

Temperature [°C] Temperature [°C]

Figure 5. Start up Current

Figure 4. Peak Current Limit

Fig.6 Star t Threshold Voltage

1.15

1.1

1.05

Vstart

1

0.95

0.9

0.85

-25 0 25 50 75 100 125 150

Figure 6. Start Threshold Voltage

5