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PDF FSGM0565RB Data sheet ( Hoja de datos )
| Número de pieza | FSGM0565RB | |
| Descripción | Green-Mode Fairchild Power Switch | |
| Fabricantes | Fairchild Semiconductor | |
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March 2010
FSGM0565RB
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
Applications
Power Supply for LCD TV and Monitor, STB and DVD
Combination
Description
The FSGM0565RB 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), Leading-
Edge 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.
Ordering Information
Part Number
Package
Operating
Junction
Temperature
Current
Limit
RDS(ON)
(Max.)
Output Power Table(2)
230VAC ± 15%(3)
85-265VAC
Adapter(4)
Open
Frame(5)
Adapter(4)
Open
Frame(5)
FSGM0565RBWDTU
TO-220F
6-Lead(1)
W-
Forming
-40°C ~
+125°C
3.00A 2.2Ω
70W
80W
41W
60W
Replaces
Device
FSDM0565RE
TO-220F
FSGM0565RBUDTU 6-Lead(1)
U-Forming
-40°C ~
+125°C
3.00A 2.2Ω
70W
80W
41W
60W FSDM0565RE
www.DataFShSeGeMt40U5.6c5oRmBLDTU
TO-220F
6-Lead(1)
L-Forming
-40°C ~
+125°C
3.00A 2.2Ω
70W
80W
41W
60W FSDM0565RE
Notes:
1. Pb-free package per JEDEC J-STD-020B.
2. The junction temperature can limit the maximum output power.
3. 230VAC or 100/115VAC with voltage doubler.
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.
© 2010 Fairchild Semiconductor Corporation
FSGM0565RB • Rev. 1.0.0
www.fairchildsemi.com
1 page  
Electrical Characteristics
TJ = 25°C unless otherwise specified.
Symbol
Parameter
Conditions
SenseFET Section
BVDSS Drain-Source Breakdown Voltage
IDSS Zero-Gate-Voltage Drain Current
RDS(ON)
Drain-Source On-State
Resistance
CISS
COSS
Input Capacitance(13)
Output Capacitance(13)
tr Rise Time
tf Fall Time
td(on)
Turn-On Delay Time
td(off)
Turn-Off Delay Time
Control Section
VCC = 0V, ID = 250μA
VDS = 520V, TA = 125°C
VGS = 10V, ID =1A
VDS = 25V, VGS = 0V, f=1MHz
VDS = 25V, VGS = 0V, f=1MHz
VDS = 325V, ID = 4A, RG=25Ω
VDS = 325V, ID = 4A, RG=25Ω
VDS = 325V, ID = 4A, RG=25Ω
VDS = 325V, ID = 4A, RG=25Ω
fS Switching Frequency
ΔfS Switching Frequency Variation(13)
DMAX
Maximum Duty Ratio
DMIN
Minimum Duty Ratio
IFB Feedback Source Current
VSTART
VSTOP
UVLO Threshold Voltage
VOP VCC Operating Range
tS/S Internal Soft-Start Time
Burst-Mode Section
VCC = 14V, VFB = 4V
-25°C < TJ < 125°C
VCC = 14V, VFB = 4V
VCC = 14V, VFB = 0V
VFB = 0
VFB = 0V, VCC Sweep
After Turn-on, VFB = 0V
VSTR = 40V, VCC Sweep
VBURH
VBURL
Hys
Burst-Mode Voltage
VCC = 14V, VFB Sweep
Protection Section
ILIM Peak Drain Current Limit
di/dt = 300mA/μs
VSD Shutdown Feedback Voltage
VCC = 14V,VFB Sweep
IDELAY
tLEB
Shutdown Delay Current
VCC = 14V, VFB = 4V
Leading-Edge Blanking Time(13)(14)
VOVP
Over-Voltage Protection
VCC Sweep
tOSP
www.DataSheeVt4OUSP.com
Output Short
Protection(13)
tOSP_FB
Threshold Time
Threshold VFB
VFB Blanking
Time
OSP Triggered when
tON<tOSP & VFB>VOSP
(Lasts Longer than tOSP_FB)
TSD Thermal Shutdown
Hys Temperature(13)
Shutdown Temperature
Hysteresis
Min. Typ. Max. Unit
650
250
1.8 2.2
515
75
26
25
14
32
V
μA
Ω
pF
pF
ns
ns
ns
ns
60 66 72 kHz
±5 ±10
%
65 70 75
%
0%
160 210 260
μA
11 12 13
V
7.0 7.5 8.0
V
13 23 V
15 ms
0.5 0.6 0.7
0.3 0.4 0.5
200
V
V
mV
2.75 3.00 3.25
5.5 6.0 6.5
2.5 3.3 4.1
300
23.0 24.5 26.0
1.0 1.2 1.4
1.8 2.0 2.2
A
V
μA
ns
V
μs
V
2.0 2.5 3.0
μs
130 140 150
°C
30 °C
Continued on the following page…
© 2010 Fairchild Semiconductor Corporation
FSGM0565RB • Rev. 1.0.0
5
www.fairchildsemi.com
5 Page 
4.3. Output-Short Protection (OSP): If the output is
shorted, steep current with extremely high di/dt can
flow through the SenseFET during the minimum turn-
on time. Such a steep current brings high-voltage
stress on the drain of the SenseFET when turned off.
To protect the device from this abnormal condition,
OSP is included. It is comprised of detecting VFB and
SenseFET turn-on time. When the VFB is higher than
2V and the SenseFET turn-on time is lower than
1.2μs, the FSGM0565RB recognizes this condition as
an abnormal error and shuts down PWM switching
until VCC reaches VSTART again. An abnormal
condition output short is shown in Figure 22.
4.5 Thermal Shutdown (TSD): The SenseFET and
the control IC on a die in one package makes it
easier for the control IC to detect the over
temperature of the SenseFET. If the temperature
exceeds ~140°C, the thermal shutdown is triggered
and the FSGM0565RB stops operation. The
FSGM0565RB operates in auto-restart mode until the
temperature decreases to around 110°C, when
normal operation resumes.
5. Soft Burst-Mode Operation: To minimize power
dissipation in standby mode, the FSGM0565RB enters
burst-mode operation. As the load decreases, the
feedback voltage decreases. As shown in Figure 23,
the device automatically enters burst mode when the
feedback voltage drops below VBURL (400mV). At this
point, switching stops and the output voltages start to
drop at a rate dependent on standby current load. This
causes the feedback voltage to rise. Once it passes
VBURH (600mV), switching resumes. At this point, the
drain current peak increases gradually. This soft burst-
mode can reduce audible noise during burst-mode
operation. The feedback voltage then falls and the
process repeats. Burst-mode operation alternately
enables and disables switching of the SenseFET,
thereby reducing switching loss in standby mode.
VO
Figure 22. Output-Short Protection
4.4 Over-Voltage Protection (OVP): If the
secondary-side feedback circuit malfunctions or a
solder defect causes an opening in the feedback
path, the current through the opto-coupler transistor
becomes almost zero. Then VFB climbs up in a similar
manner to the overload situation, forcing the preset
maximum current to be supplied to the SMPS until
the overload protection is triggered. Because more
energy than required is provided to the output, the
output voltage may exceed the rated voltage before
the overload protection is triggered, resulting in the
breakdown of the devices in the secondary side. To
prevent this situation, an OVP circuit is employed. In
general, the VCC is proportional to the output voltage
and the FSGM0565RB uses VCC instead of directly
monitoring the output voltage. If VCC exceeds 24.5V,
an OVP circuit is triggered, resulting in the
termination of the switching operation. To avoid
undesired activation of OVP during normal operation,
VCC should be designed to be below 24.5V.
www.DataSheet4U.com
VFB
0.60V
0.40V
IDS
Soft Burst
VDS
Switching
Switching
t1 disabled t2 t3 disabled t4
Figure 23. Burst-Mode Operation
t
t
t
t
© 2010 Fairchild Semiconductor Corporation
FSGM0565RB • Rev. 1.0.0
11
www.fairchildsemi.com
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet FSGM0565RB.PDF ] | |
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