www.fairchildsemi.com

Rev.1.0.0

Features

· Wide Operating Frequency Range up to 150KHz
· Internal Burst Mode Controller for Stand-by Mode
· Pulse by Pulse Over Current Limiting
· Over Current Protection(Auto Restart Mode)
· Over Voltage Protection (Auto Restart Mode)
· Over Load Protection(Auto Restart Mode)
· Internal Thermal Shutdown Function(Auto Restart Mode)
· Under Voltage Lockout
· Internal High Voltage SenseFET
· Internal Sync Terminal/Soft Start

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, optimized gate turn on/turn off driver,
thermal shutdown protection, over voltage 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 Fairchild Power Switch(FPS) can reduce total
component count, design size, and 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-220-5L

1. Drain 2. GND 3. V

5. Soft Start & Sync.

4. Feedback

Internal Block Diagram

(Tj=160)

Ifb

Vref

Rsenese

2.5R

Vref

Internal

Bias

Vref

UVLO

Ron

Roff

PWM

OCL

Burst mode

controller

Filter

(130nsec)

UVLO Reset

(Vcc=9V)

OLP

OVP

Vth=7.5V

Vcc

Vth=30V

Vth=1V

Vfb Offset

Idelay

Vcc

Vfb

Vth=1V

Vcc

Vth=11V/12V

OSC

Vref

Vpp=5.8/7.2V

Drain

Vcc

SoftStart

& Sync

Feedback

GND

FS6S0765RCB

Fairchild Power Switch(FPS)

FS6S0765RCB

Absolute Maximum Ratings

(Ta=25

C, unless otherwise specified)

Note:
1. T

= 25

C to 150

2. Repetitive rating: Pulse width limited by maximum junction temperature
3. L = 14.5mH, starting T

= 25

4. L = 13uH, starting T

= 25

Parameter

Symbol

Value

Unit

Drain-Source(GND) Voltage

(1)

DSS

650

Drain-Gate Voltage (R

=1M

)

DGR

650

Gate-Source (GND) Voltage

Drain Current Pulsed

(2)

Single Pulsed Avalanche Energy

(3)

570

Single Pulsed Avalanche Current

(4)

Continuous Drain Current (Tc = 25°C)

Continuous Drain Current (T

=100

4.5

Supply Voltage

Input Voltage Range

0.3 to V

S_S

0.3 to 10

Total Power Dissipation

(Watt H/S)

145

Darting

1.163

Operating Junction Temperature

+150

Operating Ambient Temperature

25 to +85

Storage Temperature Range

STG

55 to +150

FS6S0765RCB

Electrical Characteristics (SenseFET part)

(Ta=25

C unless otherwise specified)

Note:
1. Pulse test : Pulse width

300

S, duty 2%

Parameter

Symbol

Condition

Min.

Typ. Max. Unit

Drain-Source Breakdown Voltage

DSS

= 0V, I

= 250

650

Zero Gate Voltage Drain Current

DSS

= 650V, V

= 0V

200

= 520V

= 0V, T

= 125

300

Static Drain-Source on Resistance

(1)

DS(ON)

= 10V, I

= 1.8A

1.3

1.6

Forward Transconductance

(2)

gfs

= 50V, I

= 1.8A

3.3

Input Capacitance

Ciss

= 0V, V

= 25V,

f = 1MHz

1200

Output Capacitance

Coss

125

Reverse Transfer Capacitance

Crss

Turn on Delay Time

td(on)

= 325V, I

= 6.5A

(MOSFET switching
time are essentially
independent of
operating temperature)

Rise Time

Turn Off Delay Time

td(off)

105

Fall Time

Total Gate Charge
(Gate-Source+Gate-Drain)

= 10V, I

= 6.5A,

= 520V (MOSFET

Switching time are
Essentially independent of
Operating temperature)

Gate Source Charge

Qgs

6.5

Gate Drain (Miller) Charge

Qgd

----

FS6S0765RCB

Electrical Characteristics

(Continued)

(Ta=25

C unless otherwise specified)

Note:
1. These parameters, although guaranteed, are tested in EDS(wafer test) process.
2. These parameters, although guaranteed at the design, are not tested in massing production

Parameter

Symbol

Condition

Min. Typ. Max. Unit

UVLO SECTION
Start Threshold Voltage

START

= GND

Stop Threshold Voltage

STOP

= GND

OSCILLATOR SECTION
Initial Frequency

OSC

kHz

Voltage Stability

STABLE

12V

Vcc

23V

Temperature Stability

(2)

OSC

-25

±10

Maximum Duty Cycle

MAX

Minimum Duty Cycle

MIN

FEEDBACK SECTION
Feedback Source Current

= GND

0.7

0.9

1.1

Shutdown Feedback Voltage

Vfb

6.9V

6.9

7.5

8.1

Shutdown Delay Current

Idelay

= 5V

1.6

2.0

2.4

PROTECTION SECTION
Over Voltage Protection

OVP

27V

Over Current Latch Voltage

(1)

OCL

0.9

1.0

1.1

Thermal Shutdown Temp.

(2)

140

160

FS6S0765RCB

Electrical Characteristics

(Continued)

(Ta=25

C unless otherwise specified)

Note:
1. These parameters are the current flowing in the Control IC.
2. These parameters indicate Inductor Current.
3. These parameters, although guaranteed at the design, are not tested in massing production.

Parameter

Symbol

Condition

Min. Typ. Max. Unit

SYNC & SOFTSTART SECTION
Softstart Voltage

Vfb = 2

4.7

5.0

5.3

Softstart Current

Vss = V

0.8

1.0

1.2

Sync High Threshold Voltage

SYNCH

Vcc = 16V, Vfb = 5V

7.2

Sync Low Threshold Voltage

SYNCL

Vcc = 16V, Vfb = 5V

5.8

BURST MODE SECTION
Burst Mode Low Threshold Voltage

BURL

Vfb = 0V

10.4 11.0 11.6

Burst Mode High Threshold Voltage

BURH

Vfb = 0V

11.4 12.0 12.6

Burst Mode Enable Feedback Voltage

(3)

BEN

Vcc = 10.5V

0.7

1.0

1.3

Burst Mode Peak Current Limit

(2)

BU_PK

Vcc = 10.5V

0.45

0.6

0.75

Burst Mode Frequency

BUR

Vcc = 10.5V, Vfb = 0V

KHz

CURRENT LIMIT(SELF-PROTECTION)SECTION
Peak Current Limit

(2)

OVER

3.52

4.0

4.48

TOTAL DEVICE SECTION
Start Up Current

START

Vfb = GND, V

= 14V

0.1

0.17

Operating Supply Current

(1)

Vfb = GND, V

= 16V

OP(MIN)

Vfb = GND, V

= 10V

OP(MAX)

Vfb = GND, V

= 28V

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ÐÐ»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: FS6S0765RCB