Fairchild FSGM0765R service manual

FSGM0765R — Green-Mode Fairchild Power Switch (FPS™)

FSGM0765R
Green-Mode Fairchild Power Switch (FPS™)

Features

 Soft Burst-Mode Operation for Low Standby Power

Consumption and Low Noise

 Precision Fixed Operating Frequency: 66kHz
 Pulse-by-Pulse Current Limit
 Various Protection Functions: Overload Protection

(OLP), Over-Voltage Protection (OVP), Abnormal
Over-Current Protection (AOCP), Internal Thermal
Shutdown (TSD) with Hysteresis, Output-Short
Protection (OSP), and Under-Voltage Lockout
(UVLO) with Hysteresis

 Auto-Restart Mode
 Internal Startup Circuit
 Internal High-Voltage SenseFET: 650V
 Built-in Soft-Start: 15ms

Description

The FSGM0765R is an integrated Pulse Width
Modulation (PWM) controller and SenseFET specifically
designed for offline Switch-Mode Power Supplies
(SMPS) with minimal external components. The PWM
controller includes an integrated fixed-frequency
oscillator, Under-Voltage Lockout (UVLO), Leading­Edge Blanking (LEB), optimized gate driver, internal
soft-start, temperature-compensated precise current
sources for loop compensation, and self-protection
circuitry. Compared with a discrete MOSFET and PWM
controller solution, the FSGM series can reduce total
cost, component count, size, and weight; while
simultaneously increasing efficiency, productivity, and
system reliability. This device provides a basic platform
suited for cost-effective design of a flyback converter.

March 2010

Applications

 Power Supply for LCD TV and Monitor, STB and DVD

Combination

Ordering Information

(2)

(4)

Open

Frame

(5)

Replaces

Operating

Part Number Package

FSGM0765RWDTU

FSGM0765RUDTU

FSGM0765RLDTU

Notes:

1. Pb-free package per JEDEC J-STD-020B.

2. The junction temperature can limit the maximum output power.

3. 230V

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

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

or 100/115VAC with voltage doubler.

AC

TO-220F
6-Lead

W-Forming

TO-220F
6-Lead

U-Forming

TO-220F
6-Lead

L-Forming

Junction

Temperature

-40°C ~

(1)

+125°C

(1)

-40°C ~
+125°C

(1)

-40°C ~
+125°C

Current

Limit

2.60A

2.60A

2.60A

R

DS(ON)

(Max.)

1.6Ω

1.6Ω

1.6Ω

Adapter

Output Power Table

230VAC ± 15%

(4)

80W 90W 48W 70W FSDM07652RE

80W 90W 48W 70W FSDM07652RE

80W 90W 48W 70W FSDM07652RE

(3)

85~265VAC

Open

Frame

Adapter

(5)

Device

© 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com
FSGM0765R • Rev. 1.0.2

Application Circuit

FSGM0765R — Green-Mode Fairchild Power Switch (FPS™)

Internal Block Diagram

Figure 1. Typical Application Circuit

Figure 2. Internal Block Diagram

© 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com
FSGM0765R • Rev. 1.0.2 2

Pin Configuration

FSGM0765R — Green-Mode Fairchild Power Switch (FPS™)

Figure 3. Pin Configuration (Top View)

Pin Definitions

Pin # Name Description

1 Drain SenseFET Drain. High-voltage power SenseFET drain connection.
2 GND Ground. This pin is the control ground and the SenseFET source.

3 VCC

4 FB

5 N.C. No Connection.

6 V

Power Supply. This pin is the positive supply input, which provides the internal operating
current for both startup and steady-state operation.

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 6V, the
overload protection triggers, which shuts down the FPS.

Startup. This pin is connected directly, or through a resistor, to the high-voltage DC link.
At startup, the internal high-voltage current source supplies internal bias and charges the

STR

external capacitor connected to the V
source (I

) is disabled.

CH

pin. Once VCC reaches 12V, the internal current

CC

© 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com
FSGM0765R • Rev. 1.0.2 3

FSGM0765R — Green-Mode Fairchild Power Switch (FPS™)

Absolute Maximum Ratings

Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device
reliability. The absolute maximum ratings are stress ratings only.

Symbol Parameter Min. Max. Unit

V

V

STR

V

Drain Pin Voltage 650 V

DS

V

V

CC

V

FB

I

Drain Current Pulsed 12.8 A

DM

I

Continuous Switching Drain Current

DS

EAS Single Pulsed Avalanche Energy

PD

T

J

T

STG

V

Minimum Isolation Voltage

ISO

ESD

Notes:

6. Repetitive peak switching current when the inductive load is assumed: Limited by maximum duty (D
and junction temperature (see Figure 4).

7. L=70mH, starting TJ=+25°C.

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

9. Although this parameter guarantees IC operation, it does not guarantee all electrical characteristics.

10. The voltage between the package back side and the lead is guaranteed.

Pin Voltage 650 V

STR

Pin Voltage 26 V

CC

Feedback Pin Voltage

(7)

Total Power Dissipation (TC=+25°C)

Maximum Junction Temperature

Operating Junction Temperature

(9)

Storage Temperature

(10)

2.5 V

Electrostatic
Discharge Capability

Human Body Model, JESD22-A114 2

Charged Device Model, JESD22-C101 2

=+25°C

T

(6)

C

TC=+100°C

390 mJ

(8)

-0.3 12.0 V

6.4 A

4.0 A

45 W

+150

-40 +125

-55 +150

MAX

°C
°C
°C

kV

=0.75)

Figure 4. Repetitive Peak Switching Current

Thermal Impedance

TA=25°C unless otherwise specified.

Symbol Parameter Value Unit

JA Junction-to-Ambient Thermal Impedance

JC Junction-to-Case Thermal Impedance

Notes:

11. Infinite cooling condition (refer to the SEMI G30-88).

12. Free standing with no heat-sink under natural convection.

© 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com
FSGM0765R • Rev. 1.0.2 4

(11)

62.5 °C/W

(12)

3 °C/W

FSGM0765R — Green-Mode Fairchild Power Switch (FPS™)

Electrical Characteristics

TJ=+25°C unless otherwise specified.

Symbol Parameter Conditions Min. Typ. Max. Unit

SenseFET Section

BV

Drain-Source Breakdown Voltage

DSS

I

Zero-Gate-Voltage Drain Current

DSS

R

Drain-Source On-State Resistance VGS=10V, ID =1A 1.3 1.6 

DS(ON)

C

Input Capacitance

ISS

C

Output Capacitance

OSS

(13)

V

(13)

V

VCC=0V, ID=250μA

V

=520V, TA=+125°C

DS

=25V, V

DS

=25V, VGS=0V, f=1MHz 93 pF

DS

=0V, f=1MHz 674 pF

GS

tr Rise Time VDS=325V, ID=4A, RG=25 30 ns

tf Fall Time VDS=325V, ID=4A, RG=25 26 ns

t

Turn-On Delay Time VDS=325V, ID=4A, RG=25 16 ns

d(on)

t

Turn-Off Delay Time VDS=325V, ID= 4A, RG=25 39 ns

d(off)

Control Section

f

Switching Frequency V

S

Δf

D

MAX

D

MIN

Switching Frequency Variation

S

Maximum Duty Ratio V

Minimum Duty Ratio V

=14V, VFB=4V 60 66 72 kHz

CC

(13)

- 25°C < TJ < +125°C ±5 ±10 %

=14V, VFB=4V 65 70 75 %

CC

=14V, VFB=0V 0 %

CC

IFB Feedback Source Current VFB=0 160 210 260

V

START

V

STOP

VOP V

t

S/S

UVLO Threshold Voltage

After Turn-on, V

Operating Range 13 23 V

CC

Internal Soft-Start Time V

Burst-Mode Section

V

BURH

V

BURL

Burst-Mode Voltage VCC=14V, VFB Sweep

0.3 0.4 0.5 V

VFB=0V, V

=40V, V

STR

Sweep 11 12 13 V

CC

=0V 7.0 7.5 8.0 V

FB

Sweep 15 ms

CC

Hys 200 mV

Protection Section

I

Peak Drain Current Limit

LIM

V

Shutdown Feedback Voltage V

SD

I

Shutdown Delay Current V

DELAY

t

Leading-Edge Blanking Time

LEB

V

Over-Voltage Protection VCC Sweep 23.0 24.5 26.0 V

OVP

t

OSP

V

OSP

t

OSP_FB

T

Output Short

Threshold VFB 1.8 2.0 2.2 V

Protection

V

SD

Thermal Shutdown Temperature

Threshold Time

(13)

FB

di/dt=300mA/μs

=14V, V

CC

=14V, VFB=4V 2.5 3.3 4.1

CC

(13)(14)

300 ns

OSP Triggered when
t

ON<tOSP

Blanking Time 2.0 2.5 3.0

(Lasts Longer than t

Shutdown Temperature +130 +140 +150

(13)

Sweep 5.5 6.0 6.5 V

FB

& VFB>V

OSP

OSP_FB

)

Hys Hysteresis +30

650 V

250

μA

μA

0.5 0.6 0.7 V

2.37 2.60 2.83 A

μA

1.0 1.2 1.4

μs

μs

°C

°C

Continued on the following page…

© 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com
FSGM0765R • Rev. 1.0.2 5

FSGM0765R — Green-Mode Fairchild Power Switch (FPS™)

Electrical Characteristics (Continued)

TJ=+25°C unless otherwise specified.

Symbol Parameter Conditions Min. Typ. Max. Unit

Total Device Section

I

OP

I

OPS

I

START

I

CH

V

STR

Operating Supply Current,
(Control Part in Burst Mode)

Operating Switching Current,
(Control Part and SenseFET Part)

Start Current

Startup Charging Current V

Minimum V

STR

VCC=14V, VFB=0V 1.2 1.6 2.0 mA

VCC=14V, V

V

=11V (Before VCC

CC

Reaches V

CC=VFB

Supply Voltage VCC=VFB=0V, V

=4V 2.0 2.5 3.0 mA

FB

START

=0V, V

)

=40V 1.00 1.15 1.30 mA

STR

Sweep 26 V

STR

0.5 0.6 0.7 mA

Notes:

13. Although these parameters are guaranteed, they are not 100% tested in production.

14. t

includes gate turn-on time.

LEB

Comparison of FSDM07652RE and FSGM0765R

Function FSDM07652RE FSGM0765R Advantages of FSGM0765R

Burst Mode Advanced Burst Advanced Soft Burst Low noise and low standby power

Lightning Surge Strong

Soft-Start 10ms (Built-in) 15ms (Built-in) Longer soft-start time

OLP

Protections

OLP

OVP

TSD

OVP

OSP

AOCP

TSD with Hysteresis

Power Balance Long T

Very Short T

CLD

CLD

Enhanced SenseFET and controller against

lightning surge

Enhanced protections and high reliability

The difference of input power between the low

and high input voltage is quite small

© 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com
FSGM0765R • Rev. 1.0.2 6