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PDF FSDM0265RL Data sheet ( Hoja de datos )

Número de pieza FSDM0265RL
Descripción Green Mode Fairchild Power Switch (FPSTM)
Fabricantes Fairchild Semiconductor 
Logotipo Fairchild Semiconductor Logotipo



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www.fairchildsemi.com
FSDH0265RN, FSDM0265RN
Green Mode Fairchild Power Switch (FPSTM)
Features
• Internal Avalanche Rugged Sense FET
• Consumes only 0.65W at 240VAC & 0.3W load with
Advanced Burst-Mode Operation
• Frequency Modulation for EMI Reduction
• Precision Fixed Operating Frequency
• Internal Start-up Circuit
• Pulse-by-Pulse Current Limiting
• Abnormal Over Current Protection (AOCP)
• Over Voltage Protection (OVP)
• Over Load Protection (OLP)
• Internal Thermal Shutdown Function (TSD)
• Auto-Restart Mode
• Under Voltage Lockout (UVLO)
• Low Operating Current (3mA)
• Adjustable Peak Current Limit
• Built-in Soft Start
Applications
• SMPS for VCR, SVR, STB, DVD & DVCD Player
• SMPS for Printer, Facsimile & Scanner
• Adapter for Camcorder
Related Application Notes
• AN-4137, 4141, 4147(Flyback) / AN-4134(Forward)
Description
Each product in the FSDx0265RN (x for M, H) family con-
sists of an integrated Pulse Width Modulator (PWM) and
Sense FET, and is specifically designed for high perfor-
mance off-line Switch Mode Power Supplies (SMPS) with
minimal external components. Both devices are integrated
high voltage power switching regulators which combine an
avalanche rugged Sense FET with a current mode PWM
control block. The integrated PWM controller features
include: a fixed oscillator with frequency modulation for
reduced EMI, Under Voltage Lock Out (UVLO) protection,
Leading Edge Blanking (LEB), an optimized gate turn-on/
turn-off driver, Thermal Shut Down (TSD) protection,
Abnormal Over Current Protection (AOCP) and temperature
compensated precision current sources for loop compensa-
tion and fault protection circuitry. When compared to a dis-
crete MOSFET and controller or RCC switching converter
solution, the FSDx0265RN devices reduce total component
count, design size, weight while increasing efficiency, pro-
ductivity and system reliability. Both devices provide a basic
platform that is well suited for the design of cost-effective
flyback converters.
FPSTM is a trademark of Fairchild Semiconductor Corporation.
©2005 Fairchild Semiconductor Corporation
OUTPUT POWER TABLE
230VAC ±15%(3)
85-265VAC
PRODUCT
Adapt- Open Adapt- Open
er(1) Frame(2) er(1) Frame(2)
FSDL321
11W
17W
8W
12W
FSDH321
11W
17W
8W
12W
FSDL0165RN 13W
23W
11W
17W
FSDM0265RN 16W
27W
13W
20W
FSDH0265RN 16W
27W
13W
20W
FSDL0365RN 19W
30W
16W
24W
FSDM0365RN 19W
30W
16W
24W
FSDL321L
11W
17W
8W
12W
FSDH321L
11W
17W
8W
12W
FSDL0165RL 13W
23W
11W
17W
FSDM0265RL 16W
27W
13W
20W
FSDH0265RL 16W
27W
13W
20W
FSDL0365RL 19W
30W
16W
24W
FSDM0365RL 19W
30W
16W
24W
Notes:
1. Typical continuous power in a non-ventilated enclosed
adapter with sufficient drain pattern as a heat sinker, at
50°C ambient.
2. Maximum practical continuous power in an open frame
design with sufficient drain pattern as a heat sinker, at 50°C
ambient.
3. 230 VAC or 100/115 VAC with doubler.
Typical Circuit
AC
IN
Vstr Drain
Ipk
PWM
Vfb Vcc Source
DC
OUT
Figure 1. Typical Flyback Application
Rev.1.0.8

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FSDM0265RL pdf
Electrical Characteristics
(Ta = 25°C unless otherwise specified)
Parameter
SENSE FET SECTION
Symbol
Zero-Gate-Voltage Drain Current
IDSS
Drain-Source On-State Resistance(1)
Input Capacitance
Output Capacitance
Reverse Transfer Capacitance
Turn-On Delay Time
Rise Time
Turn-Off Delay Time
Fall Time
CONTROL SECTION
Switching Frequency
Switching Frequency Modulation
Switching Frequency
Switching Frequency Modulation
Switching Frequency Variation(2)
RDS(ON)
CISS
COSS
CRSS
td(on)
tr
td(off)
tf
fOSC
fMOD
fOSC
fMOD
fOSC
Maximum Duty Cycle
DMAX
Minimum Duty Cycle
UVLO Threshold Voltage
Feedback Source Current
Internal Soft Start Time
BURST MODE SECTION
Burst Mode Voltage
PROTECTION SECTION
Peak Current Limit
Current Limit Delay Time(3)
Thermal Shutdown Temperature
Shutdown Feedback Voltage
Over Voltage Protection
Shutdown Delay Current
Leading Edge Blanking Time
TOTAL DEVICE SECTION
Operating Supply Current (control part only)
Start-Up Charging Current
Vstr Supply Voltage
DMIN
VSTART
VSTOP
IFB
tS/S
VBURH
VBURL
ILIM
tCLD
TSD
VSD
VOVP
IDELAY
tLEB
IOP
ICH
VSTR
Condition
VDS=650V, VGS=0V
VDS=520V, VGS=0V,
TC=125°C
VGS=10V, ID=0.5A
VGS=0V, VDS=25V,
f=1MHz
VDS=325V, ID=1.0A
FSDH0265R
FSDM0265R
-25°C Ta 85°C
FSDH0265R
FSDM0265R
VFB=GND
VFB=GND
VFB=GND
VFB=4V
-
-
Max. inductor current
-
VFB=4V
VCC=14V
VCC=0V
VCC=0V
Note:
1. Pulse test: Pulse width 300us, duty 2%
2. These parameters, although guaranteed, are tested in EDS (wafer test) process
3. These parameters, although guaranteed, are not 100% tested in production
FSDH0265RN, FSDM0265RN
Min. Typ. Max. Unit
- - 50 µA
- - 200 µA
- 5.0 6.0
- 550 -
pF
- 38 - pF
- 17 - pF
- 20 - ns
- 15 - ns
- 55 - ns
- 25 - ns
92 100 108 KHz
±2.0 ±3.0 ±4.0 KHz
61 67 73 KHz
±1.5 ±2.0 ±2.5 KHz
- ±5 ±10 %
71 77 83 %
62 67 72 %
0 0 0%
11 12 13 V
789V
0.7 0.9 1.1 mA
10 15 20 ms
0.4 0.5 0.6
0.25 0.35 0.45
V
V
1.3 1.5 1.7
- 500 -
125 140
-
5.5 6.0 6.5
18 19
-
3.5 5.0 6.5
200 -
-
A
ns
°C
V
V
µA
ns
135
0.7 0.85 1.0
35 -
-
mA
mA
V
5

5 Page





FSDM0265RL arduino
FSDH0265RN, FSDM0265RN
5. Soft Start : The FPS has an internal soft start circuit that
slowly increases the feedback voltage together with the
Sense FET current after it starts up. The typical soft start
time is 15msec, as shown in Figure 8, where progressive
increments of the Sense FET current are allowed during the
start-up phase. The pulse width to the power switching
device is progressively increased to establish the correct
working conditions for transformers, inductors, and capaci-
tors. The voltage on the output capacitors is progressively
increased with the intention of smoothly establishing the
required output voltage. It also helps to prevent transformer
saturation and reduce the stress on the secondary diode.
Drain current
1.5A
1ms
0.68A
15steps
Current limit
Figure 8. Soft Start Function
t
VFB
VBURH
VBURL
Current
Waveform
Burst
Operation
Burst
Operation
Normal
Operation
Switching
OFF
Switching
OFF
Vfb
3
VBURH
+
-
VBURL/VBURH
Vcc
IDELAY
Vcc
IFB
Vcc
IBUR(pk)
Normal
2.5R
R
Burst
PWM
MOSFET
Current
Figure 9. Burst Operation Function
6. Burst Operation : In order to minimize power dissipation
in standby mode, the FPS enters burst mode operation. As
the load decreases, the feedback voltage decreases. As
shown in Figure 9, the device automatically enters burst
mode when the feedback voltage drops below
VBURH(500mV). Switching still continues but the current
limit is set to a fixed limit internally to minimize flux density
in the transformer. The fixed current limit is larger than that
defined by VFB = VBURH and therefore, VFB is driven
down further. Switching continues until the feedback voltage
drops below VBURL(350mV). At this point switching stops
and the output voltages start to drop at a rate dependent on
the standby current load. This causes the feedback voltage to
rise. Once it passes VBURH(500mV), switching resumes.
The feedback voltage then falls and the process repeats.
Burst mode operation alternately enables and disables
switching of the power Sense FET thereby reducing switch-
ing loss in Standby mode.
7. Frequency Modulation : Modulating the switching fre-
quency of a switched power supply can reduce EMI. Fre-
quency modulation can reduce EMI by spreading the energy
over a wider frequency range than the bandwidth measured
by the EMI test equipment. The amount of EMI reduction is
directly related to the depth of the reference frequency. As
can be seen in Figure 10, the frequency changes from 65KHz
to 69KHz in 4ms for the FSDM0265RN (97KHz to 103KHz
for FSDH0265RN). Frequency modulation allows the use of
a cost effective inductor instead of an AC input mode choke
to satisfy the requirements of world wide EMI limits.
fs=1/ts
69kHz
67kHz
65kHz
Drain
Current
ts
4ms t
Figure 10. Frequency Modulation Waveform
11

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