View FSDM0465RS_4401765.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

FSDM0465RS -- Green Mode Fairchild Power Switch (FPSTM)
April 2009
FSDM0465RS Green Mode Fairchild Power Switch (FPSTM)
Features
! Internal Avalanche Rugged SenseFET ! Advanced Burst-Mode Operation Consumes
Description
The FSDM0465RS is an integrated Pulse-Width Modulator (PWM) and SenseFET specifically designed for high-performance offline Switch Mode Power Supplies (SMPS) with minimal external components. The device is an integrated, high-voltage, powerswitching regulator that combines an avalanche rugged SenseFET with a current mode PWM control block. The PWM controller includes integrated fixed-frequency oscillator, under-voltage lockout, leading-edge blanking (LEB), optimized gate driver, internal soft-start, temperature-compensated precise-current sources for a loop compensation and self-protection circuitry. Compared with a discrete MOSFET and PWM controller solution, it reduces total cost, component count, size and weight; while increasing efficiency, productivity and system reliability. This device is a basic platform well suited for cost effective designs of flyback converters.
under 1W at 240VAC and 0.5W Load
! Precision Fixed Operating Frequency: 66kHz ! Internal Startup Circuit ! Improved Pulse-by-Pulse Current Limiting ! Over-Voltage Protection (OVP) ! Overload Protection (OLP) ! Internal Thermal Shutdown Function (TSD) ! Abnormal Over-Current Protection (AOCP) ! Auto-Restart Mode ! Under-Voltage Lock Out (UVLO) with Hysteresis ! Low Operating Current: 2.5mA ! Built-in Soft-Start
Applications
! SMPS for LCD Monitor and STB ! Adaptor
Ordering Information
Product Number
FSDM0465RSWDTU(1) Note: 1. WDTU: Forming Type.
For Fairchild's definition of "green" Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html. FPSTM is a trademark of Fairchild Semiconductor Corporation.
(c) 2008 Fairchild Semiconductor Corporation FSDM0465RS Rev. 1.0.1 www.fairchildsemi.com
Package
TO-220F-6L(Forming)
Eco Status
RoHS
Marking Code
DM0465RS
BVDSS
650V
RDS(ON) Max.
2.6
FSDM0465RS -- Green Mode Fairchild Power Switch (FPSTM)
Typical Circuit
AC IN
DC OUT
Vstr PWM Vfb
Drain
Vcc
Source
FSDM0465RS Rev: 00
Figure 1. Typical Flyback Application
Output Power Table
Maximum Output Power(2) Product
FSDM0465RS
230VAC 15%(3) Adapter(4)
48W
85-265VAC Frame(5) Adapter(4)
40W
Open
Open Frame(5)
48W
56W
Notes: 2. The junction temperature can limit the maximum output power. 3. 230VAC or 100/115VAC with doubler. 4. Typical continuous power in a non-ventilated enclosed adapter measured at 50C ambient temperature. 5. Maximum practical continuous power in an open-frame design at 50C ambient.
(c) 2008 Fairchild Semiconductor Corporation FSDM0465RS Rev. 1.0.1 2
www.fairchildsemi.com
FSDM0465RS -- Green Mode Fairchild Power Switch (FPSTM)
Internal Block Diagram
VCC 3 N.C. 5 0.5/0.7V + VCC Idelay FB 4 Soft start Vref IFB 2.5R PWM OSC
S R Q Q
Vstr 6 Istart Vref Internal Bias
Drain 1
8V/12V
VCC good
R
Gate driver LEB
VSD VCC Vovp TSD VCC good
S R Q Q
2 GND
VCL
FSDM0465RS Rev: 00
Figure 2. Functional Block Diagram
(c) 2008 Fairchild Semiconductor Corporation FSDM0465RS Rev. 1.0.1 3
www.fairchildsemi.com
FSDM0465RS -- Green Mode Fairchild Power Switch (FPSTM)
Pin Configuration
TO-220F-6L 6. Vstr 5. N.C. 4. Vfb 3. VCC 2. GND 1. Drain
Figure 3. Pin Configuration (Top View)
Pin Definitions
Pin #
1 2 3
Name
Drain GND VCC
Description
SenseFET drain. High-voltage power SenseFET drain connection. Ground. This pin is the control ground and the SenseFET source. Power Supply. This pin is the positive supply input, providing 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. No Connection. 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 external capacitor connected to the VCC pin. Once VCC reaches 12V, the internal current source is disabled. It is not recommended to connect Vstr and Drain together.
4 5 6
Vfb N.C. Vstr
(c) 2008 Fairchild Semiconductor Corporation FSDM0465RS Rev. 1.0.1 4
www.fairchildsemi.com
FSDM0465RS -- Green Mode Fairchild Power Switch (FPSTM)
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. TA = 25C, unless otherwise specified.
Symbol
BVDSS VSTR IDM ID EAS VCC VFB TJ TA TSTG ESD
Parameter
Drain Source Breakdown Voltage VSTR Maximum Voltage Drain Current Pulsed(6) Continuous Drain Current(7) Single Pulsed Avalanche Energy(8) Supply Voltage Input Voltage Range Operating Junction Temperature Operating Ambient Temperature Storage Temperature ESD Capability, Human Body Model, JESD22-A114 (All pins excepts for VSTR and VFB) ESD Capability, Charged Device Model, JESD22-C101 TC=25C TC=25C TC=100C
Value
650 650 9.6 2.2 1.4 120 20 -0.3 to 12 45 Internally limited -25 to +85 -55 to +150 2.0 (GND-VSTR/VFB=1.5kV) 1.0
Unit
V V ADC ARMS ARMS mJ V V W C C C kV kV
PD(Watt H/S) Total Power Dissipation (Tc=25C)
Notes: 6. Repetitive rating: pulse width limited by maximum junction temperature. 7. This value is RMS current rating which should not be confused by the switching current. 8. L=14mH, starting TJ=25C.
Thermal Impedance
TA=25C, unless otherwise specified.
Symbol
JA(9) JC(10)
Parameter
Junction-to-Ambient Thermal Junction-to-Case Thermal
Value
50 2.78
Unit
C/W C/W
Notes: 9. Free standing with no heat-sink under natural convection. 10. Infinite cooling condition - Refer to the SEMI G30-88.
(c) 2008 Fairchild Semiconductor Corporation FSDM0465RS Rev. 1.0.1 5
www.fairchildsemi.com
FSDM0465RS -- Green Mode Fairchild Power Switch (FPSTM)
Electrical Characteristics
TA = 25C unless otherwise specified.
Symbol
SenseFET SECTION
Parameter
Condition
VDS = 650V, VGS = 0V
Min. Typ. Max. Unit
250 250 2.2 60 23 20 65 27 2.6 A A pF
IDSS RDS(ON) COSS td(on) tr td(off) tf fOSC fSTABLE fOSC IFB DMAX DMIN VSTART VSTOP tS/S VBURH VBURL VSD IDELAY tLEB ILIMIT VOVP TSD ISTART IOP IOP(MIN) IOP(MAX)
Zero Gate Voltage Drain Current Static Drain Source on Resistance(11) Output Capacitance Turn-On Delay Time Rise Time Turn-Off Delay Time Fall Time Switching Frequency Switching Frequency Stability Switching Frequency Maximum Duty Cycle Minimum Duty Cycle UVLO Threshold Voltage Internal Soft-Start Time Variation(12) Feedback Source Current
VDS = 520V, VGS = 0V, TC = 125C VGS = 10V, ID = 2.5A VGS = 0V, VDS = 25V, f = 1MHz
VDD = 325V, ID = 5A
ns
CONTROL SECTION VFB = 3V 13V VCC 18V -25C TA 85C VFB = GND 60 0 0 0.7 77 VFB = GND VFB = GND VFB = 3V VCC = 14V VCC = 14V VFB 5.5V VFB = 5V VFB = 5V, VCC = 14V 5.5 2.8 1.6 18 11 7 66 1 5 0.9 82 12 8 10 0.7 0.5 6.0 3.5 250 1.8 19 2.0 20 6.5 4.2 72 3 10 1.1 87 0 13 9 15 kHz % % mA % % V V ms V V V A ns A V C mA mA
BURST MODE SECTION Burst Mode Voltages
PROTECTION SECTION Shutdown Feedback Voltage Shutdown Delay Current Leading Edge Blanking Time(12) Peak Current Limit(13) Temperature(12) VFB = GND, VCC = 11V VFB = GND, VCC = 14V Operating Supply Current
(14)
Over-Voltage Protection Thermal Shutdown
+130 +145 +160 1.0 2.5 1.3 5.0
TOTAL DEVICE SECTION Operating Supply Current(14)
VFB = GND, VCC = 10V VFB = GND, VCC = 18V
Notes: 11. Pulse test: Pulse width 300S, duty 2%. 12. These parameters, although guaranteed at the design, are not tested in mass production. 13. These parameters indicate the inductor current. 14. This parameter is the current flowing into the control IC.
(c) 2008 Fairchild Semiconductor Corporation FSDM0465RS Rev. 1.0.1 6
www.fairchildsemi.com
FSDM0465RS -- Green Mode Fairchild Power Switch (FPSTM)
Comparison Between FS6M07652RTC and FSDM0465RS
Function FS6M07652RTC FSDM0465RS FSDM0465RS Advantages
! Gradually increasing current limit during
Soft-Start
soft-start further reduces peak current and Adjustable soft-start Internal soft-start with voltage component stresses time using an external typically 10ms (fixed) ! Eliminates external components used for capacitor soft-start in most applications ! Reduces or eliminates output overshoot
! Built into controller ! Built into controller ! Improve light-load efficiency Burst Mode Operation ! Output voltage ! Output voltage fixed ! Reduces no-load consumption drops to around half
(c) 2008 Fairchild Semiconductor Corporation FSDM0465RS Rev. 1.0.1 7
www.fairchildsemi.com
FSDM0465RS -- Green Mode Fairchild Power Switch (FPSTM)
Typical Performance Characteristics
Graphs are normalized at TA= 25C.
1.2 Start Thershold Voltage (Vstart) -25 0 25 50 75 100 125 150 1.0 Operating Current (Iop) 0.8 0.6 0.4 0.2 0.0
1.2 1.0 0.8 0.6 0.4 0.2 0.0 -25 0 25 50 75 100 125 150
Junction Temperature [C]
Junction Temperature [C]
Figure 4. Operating Current vs. Temperature
Figure 5. Start Threshold Voltage vs. Temperature
1.2 Stop Threshold Voltage (Vstop) 1.0 0.8 0.6 0.4 0.2 0.0 -25 0 25 50 75 100 125 150
1.2 1.0 0.8 0.6 0.4 0.2 0.0 -25 0 25 50 75 100 125 150
Junction Temperature [C]
Operating Frequency (Fosc)
Junction Temperature [C]
Figure 6. Stop Threshold Voltage vs. Temperature
Figure 7. Operating Frequency vs. Temperature
1.2 Maximum Duty Cycle (Dmax) 1.0 0.8 0.6 0.4 0.2 0.0 -25 0 25 50 75 100 125 150 FB Source Current (Ifb)
1.2 1.0 0.8 0.6 0.4 0.2 0.0 -25 0 25 50 75 100 125 150
Junction Temperature [C]
Junction Temperature [C]
Figure 8. Maximum Duty vs. Temperature
Figure 9. Feedback Source Current vs. Temperature
(c) 2008 Fairchild Semiconductor Corporation FSDM0465RS Rev. 1.0.1 8
www.fairchildsemi.com
FSDM0465RS -- Green Mode Fairchild Power Switch (FPSTM)
Typical Performance Characteristics (Continued)
Graphs are normalized at TA= 25C.
1.2 Shutdown Delay Current (Idelay) -25 0 25 50 75 100 125 150 Shutdown FB Voltage (Vsd) 1.0 0.8 0.6 0.4 0.2 0.0
1.2 1.0 0.8 0.6 0.4 0.2 0.0 -25 0 25 50 75 100 125 150
Junction Temperature [C]
Junction Temperature [C]
Figure 10. Shutdown Feedback Voltage vs. Temperature
Figure 11. Shutdown Delay Current vs. Temperature
FB Burst Mode Enable Voltage (Vfbe)
1.2 Over Voltage Protection (Vovp) 1.0 0.8 0.6 0.4 0.2 0.0 -25 0 25 50 75 100 125 150
1.2 1.0 0.8 0.6 0.4 0.2 0.0 -25 0 25 50 75 100 125 150
Junction Temperature [C]
Junction Temperature [C]
Figure 12. Over-Voltage Protection vs. Temperature
Figure 13. Burst Mode Enable Voltage vs. Temperature
FB Burst Mode Disable Voltage (Vfbd)
1.2 1.0 0.8 0.6 0.4 0.2 0.0 -25 0 25 50 75 100 125 150 Peak Current Limit (Self protection) (Iover)
1.2 1.0 0.8 0.6 0.4 0.2 0.0 -50 -25 0 25 50 75 100 125
Junction Temperature [C]
Junction Temperature [C]
Figure 14. Burst Mode Disable Voltage vs. Temperature
(c) 2008 Fairchild Semiconductor Corporation FSDM0465RS Rev. 1.0.1 9
Figure 15. Current Limit vs. Temperature
www.fairchildsemi.com
FSDM0465RS -- Green Mode Fairchild Power Switch (FPSTM)
Typical Performance Characteristics (Continued)
Graphs are normalized at TA= 25C.
1.2 Soft Start Time (Normalized to 25C) 1.0 0.8 0.6 0.4 0.2 0.0 -50 -25 0 25 50 75 100 125
Junction Temperature [C]
Figure 16. Soft-Start Time vs. Temperature
.
(c) 2008 Fairchild Semiconductor Corporation FSDM0465RS Rev. 1.0.1 10
www.fairchildsemi.com
FSDM0465RS -- Green Mode Fairchild Power Switch (FPSTM)
Functional Description
1. Startup: In previous generations of Fairchild Power Switches (FPSTM) the VCC pin had an external startup resistor to the DC input voltage line. In this generation the startup resistor is replaced by an internal highvoltage current source. At startup, an internal highvoltage current source supplies the internal bias and charges the external capacitor (Cvcc) that is connected to the VCC pin shown in Figure 17. When VCC reaches 12V, the FSDM0465RS begins switching and the internal high-voltage current source is disabled. The FSDM0465RS continues its normal switching operation and the power is supplied from the auxiliary transformer winding unless VCC goes below the stop voltage of 8V.
VCC Idelay Vref IFB
OSC
VO
H11A817A
Vfb
CB
4 D1 D2 + Vfb* 2.5R
SenseFET
R
Gate driver
KA431
-
VSD
FSDM0465RS Rev: 00
OLP
Rsense
Figure 18. Pulse Width Modulation (PWM) Circuit
VDC
CVcc
VCC 3 Istart Vref 8V/12V VCC good 6
Vstr
2.1 Pulse-by-Pulse Current Limit: Because current mode control is employed, the peak current through the SenseFET is limited by the inverting input of PWM comparator (VFB*) as shown in Figure 18. Assuming that the 0.9mA current source flows only through the internal resistor (2.5R + R = 2.8k), the cathode voltage of diode D2 is about 2.5V. Since D1 is blocked when the feedback voltage (VFB) exceeds 2.5V, the maximum voltage of the cathode of D2 is clamped at this voltage, thus clamping VFB*. Therefore, the peak value of the current through the SenseFET is limited. 2.2 Leading-Edge Blanking (LEB): At the instant the internal SenseFET is turned on, there usually exists a high-current spike through the SenseFET, caused by primary-side capacitance and secondary-side rectifier reverse recovery. Excessive voltage across the RSENSE resistor would lead to incorrect feedback operation in the current mode PWM control. To counter this effect, the FSDM0465RS employs a leading edge blanking (LEB) circuit. This circuit inhibits the PWM comparator for a short time (tLEB) after the SenseFET is turned on.
Internal Bias
FSDM0465RS Rev: 00
Figure 17. Internal Startup Circuit
2. Feedback Control: FSDM0465RS employs current mode control, as shown in Figure 18. An opto-coupler (such as the H11A817A) and shunt regulator (such as the KA431) are typically used to implement the feedback network. Comparing the feedback voltage with the voltage across the RSENSE resistor plus an offset voltage makes it possible to control the switching duty cycle. When the reference pin voltage of the KA431 exceeds the internal reference voltage of 2.5V, the H11A817A LED current increases, thus pulling down the feedback voltage and reducing the duty cycle. This event typically happens when the input voltage is increased or the output load is decreased.
3. Protection Circuit: The FSDM0465RS has several self protective functions such as overload protection (OLP), over-voltage protection (OVP) and thermal shutdown (TSD). Because these protection circuits are fully integrated into the IC without external components, the reliability is improved without increasing cost. Once the fault condition occurs, switching is terminated and the SenseFET remains off. This causes VCC to fall. When VCC reaches the UVLO stop voltage, 8V, the protection is reset and the internal high-voltage current source charges the VCC capacitor via the Vstr pin. When VCC reaches the UVLO start voltage, 12V, the FSDM0465RS resumes its normal operation. In this manner, the auto-restart can alternately enable and
(c) 2008 Fairchild Semiconductor Corporation FSDM0465RS Rev. 1.0.1 11
www.fairchildsemi.com
FSDM0465RS -- Green Mode Fairchild Power Switch (FPSTM)
disable the switching of the power SenseFET until the fault condition is eliminated (see Figure 19).
VFB
Fault occurs
FSDM04565RS Rev: 00
Overload protection
Vds
Power on Fault removed
6.0V
2.5V
T12= Cfb*(6.0-2.5)/Idelay
Vcc
T1
12V 8V
T2
t
Figure 20. Overload Protection 3.2 Over-Voltage Protection (OVP): If the secondary side feedback circuit were to malfunction or a solder defect caused an open 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 activated. Because more energy than required is provided to the output, the output voltage may exceed the rated voltage before the overload protection is activated, resulting in the breakdown of the devices in the secondary side. To prevent this situation, an overvoltage protection (OVP) circuit is employed. In general, VCC is proportional to the output voltage and the FSDM0465RS uses VCC instead of directly monitoring the output voltage. If VCC exceeds 19V, an OVP circuit is activated resulting in the termination of the switching operation. To avoid undesired activation of OVP during normal operation, VCC should be designed to be below 19V. 3.3 Thermal Shutdown (TSD): The SenseFET and the control IC are built in one package. This makes it easy for the control IC to detect the heat generation from the SenseFET. When the temperature exceeds approximately 150C, the thermal shutdown is activated. 4.2 Abnormal Over-Current Protection (AOCP): When the secondary rectifier diodes or the transformer pins are shorted, a steep current with extremely high di/dt can flow through the SenseFET during the LEB time. Even though the FPS has overload protection, it is not enough to protect the FPS in those abnormal cases, since severe current stress is imposed on the SenseFET until OLP triggers. This IC has an internal AOCP circuit shown in Figure 21. When the gate turn-on signal is applied to the power SenseFET, the AOCP block is enabled and monitors the current through the sensing resistor. The voltage across the resistor is compared with a preset AOCP level. If the sensing resistor voltage is
t
Normal operation Fault situation Normal operation
FSDM0465RS Rev: 00
Figure 19. Auto Restart Operation
3.1 Overload Protection (OLP): Overload is defined as the load current exceeding a pre-set level due to an unexpected event. In this situation, the protection circuit should be activated to protect the SMPS. However, even when the SMPS is in the normal operation, the overload protection circuit can be activated during the load transition. To avoid this undesired operation, the overload protection circuit is designed to be activated after a specified time to determine whether it is a transient situation or an overload situation. Because of the pulse-by-pulse current limit capability, the maximum peak current through the SenseFET is limited, and therefore the maximum input power is restricted with a given input voltage. If the output consumes beyond this maximum power, the output voltage (VO) decreases below the set voltage. This reduces the current through the opto-coupler LED, which reduces the opto-coupler transistor current, thus increasing the feedback voltage (VFB). If VFB exceeds 2.5V, D1 is blocked and the 3.5A current source starts to charge CB slowly up to VCC. In this condition, VFB continues increasing until it reaches 6V, when the switching operation is terminated as shown in Figure 20. The delay time for shutdown is the time required to charge CB from 2.5V to 6.0V with 3.5A. In general, a 10 ~ 50ms delay time is typical for most applications.
(c) 2008 Fairchild Semiconductor Corporation FSDM0465RS Rev. 1.0.1 12
www.fairchildsemi.com
FSDM0465RS -- Green Mode Fairchild Power Switch (FPSTM)
greater than the AOCP level, the set signal is applied to the latch, resulting in the shutdown of the SMPS.
OSC 2.5R
S R Q Q
Vo
Voset
Gate driver LEB
VFB
0.7V 0.5V
R
AOCP protection
VCL
2 GND
Ids
FSDM0465RS Rev: 00
Figure 21. Abnormal Over-Current Protection 4. Soft-Start: The FSDM0465RS has an internal softstart circuit that increases PWM comparator inverting input voltage together with the SenseFET current slowly after it starts up. The typical soft-start time is 10ms. The pulse width to the power switching device is progressively increased to establish the correct working conditions for transformers, inductors, and capacitors. The voltage on the output capacitors is progressively increased with the intention of smoothly establishing the required output voltage. It helps prevent transformer saturation and reduces the stress on the secondary diode during startup. 5. Burst Operation: To minimize power dissipation in standby mode, the FSDM0465RS enters burst mode operation. As the load decreases, the feedback voltage decreases. As shown in Figure 22, the device automatically enters burst mode when the feedback voltage drops below VBURL(500mV). 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(700mV) switching resumes. The feedback voltage then falls and the process repeats. Burst mode operation alternately enables and disables switching of the power SenseFET thereby reducing switching loss in standby mode.
Vds
time
FSDM0465RS Rev: 00
T1
Switching disabled
T2 T3
Switching disabled
T4
Figure 22. Waveforms of Burst Operation
(c) 2008 Fairchild Semiconductor Corporation FSDM0465RS Rev. 1.0.1 13
www.fairchildsemi.com
FSDM0465RS -- Green Mode Fairchild Power Switch (FPSTM)
Typical Application Circuit
Application
LCD Monitor
Output Power
34W
Input Voltage
Universal Input (85-265VAC)
Output Voltage (Maximum Current)
5V (2.0A) 12V (2.0A)
Features
! High Efficiency (>81% at 85VAC Input) ! Low Zero Load Power Consumption (<300mW at 240VAC Input) ! Low Standby Mode Power Consumption (<800mW at 240VAC Input and 0.3W Load) ! Low Component Count ! Enhanced System Reliability through Various Protection Functions ! Internal Soft-Start (10ms)
Key Design Notes
! Resistors R102 and R105 are employed to prevent startup at low input voltage. After startup, there is no power loss
in these resistors since the startup pin is internally disconnected after startup.
! The delay time for overload protection is designed to be about 50ms with C106 of 47nF. If a faster triggering of OLP
is required, C106 can be reduced to 10nF.
! Zener diode ZD102 is used for a safety test such as UL. When the drain pin and feedback pin are shorted, the zener
diode fails and remains short, which causes the fuse (F1) blown and prevents explosion of the opto-coupler (IC301). This zener diode also increases the immunity against line surge.
1. Schematic
D202 T1 EER3016 MBRF10100 1 R103 56k 2W C104 2.2nF 1kV 10 C201 1000F 25V L201 12V, 2.5A C202 1000F 25V
2 D101 UF 4007
8
C103 100F 400V BD101 2 2KBP06M3N257 1 3
R102 30k R105 40k
3
IC1 FSDM04565RS 6 5 4 Vstr NC Vcc 3 Vfb GND 2 ZD101 22V C105 D102 22F UF4004 50V R104 5 4 Drain 1 D201 MBRF1045 7 C203 1000F 10V L202 5V, 2A C204 1000F 10V
4 C102 220nF 275VAC
ZD102 10V
C106 47nF 50V
5
6
LF101 23mH
C301 4.7nF
R201 1k R101 560k 1W IC301 H11A817A R204 5.6k R203 12k C205 47nF
R202 1.2k
RT1 5D-9
C101 220nF 275VAC
F1 FUSE 250V 2A
IC201 KA431
R205 5.6k
FSDM0465RS Rev: 00
Figure 23. Demo Circuit
(c) 2008 Fairchild Semiconductor Corporation FSDM0465RS Rev. 1.0.1 14
www.fairchildsemi.com
FSDM0465RS -- Green Mode Fairchild Power Switch (FPSTM)
2. Transformer
EER3016 Np/2 1 10 N12V
Np/2
2
9
3
8
4
7
N5V
Na 5
6 FSDM0465RS Rev: 00
Figure 24. Transformer Schematic Diagram
3.Winding Specification No
Na Np/2 N12V N5V Np/2
Pin (sf)
45 21 10 8 76 32
Wire
0.2 x1
Turns
8 18 7 3 18
Winding Method
Center Winding Solenoid Winding Center Winding Center Winding Solenoid Winding
Insulation: Polyester Tape t = 0.050mm, 2 Layers 0.4 x 1 0.3 x 3 0.3 x 3 0.4 x 1 Insulation: Polyester Tape t = 0.050mm, 2 Layers Insulation: Polyester Tape t = 0.050mm, 2 Layers Insulation: Polyester Tape t = 0.050mm, 2 Layers Outer Insulation: Polyester Tape t = 0.050mm, 2 Layers
4.Electrical Characteristics Pin
Inductance Leakage Inductance 1-3 1-3
Specification
650H 10% 10H Maximum
Remarks
100kHz, 1V 2nd all short
5. Core & Bobbin
! Core: EER 3016 ! Bobbin: EER3016 ! Ae(mm2): 96
(c) 2008 Fairchild Semiconductor Corporation FSDM0465RS Rev. 1.0.1 15
www.fairchildsemi.com
FSDM0465RS -- Green Mode Fairchild Power Switch (FPSTM)
6. Demo Circuit Part List Part
F101 RT101 R101 R102 R103 R104 R105 R201 R202 R203 R204 R205
Value
Fuse 2A/250V NTC 5D-9 Resistor 560k 30k 56k 5 40k 1k 1.2k 12k 5.6k 5.6k Capacitor
Note
Part
L201 L202 D101
Value
Inductor 5H 5H Diode UF4007 UF4004 MBRF1045 MBRF10100 Zener Diode Zener Diode Bridge Diode 2KBP06M 3N257 Line Filter
Note
Wire 1.2mm Wire 1.2mm
1W 1/4W 2W 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W 1/4W
D102 D201 D202 ZD101 ZD102 BD101
22V 10V Bridge Diode
LF101 IC101
23mH IC FSDM0465RS KA431 (TL431) H11A817A
Wire 0.4mm FPSTM Voltage Reference Opto-coupler
C101 C102 C103 C104 C105 C106 C201 C202 C203 C204 C205 C301
220nF/275VAC 220nF/275VAC 100F/400V 2.2nF/1kV 22uF/50V 47nF/50V 1000F/25V 1000F/25V 1000F/10V 1000F/10V 47nF/50V 4.7nF
Box Capacitor Box Capacitor Electrolytic Capacitor Ceramic Capacitor Electrolytic Capacitor Ceramic Capacitor Electrolytic Capacitor Electrolytic Capacitor Electrolytic Capacitor Electrolytic Capacitor Ceramic Capacitor Polyester Film Capacitor
IC201 IC301
(c) 2008 Fairchild Semiconductor Corporation FSDM0465RS Rev. 1.0.1 16
www.fairchildsemi.com
FSDM0465RS -- Green Mode Fairchild Power Switch (FPSTM)
7. Layout
Figure 25. FSDM0465RS Demo Board (Top View)
Figure 26. FSDM0465RS Demo Board (Bottom View)
(c) 2008 Fairchild Semiconductor Corporation FSDM0465RS Rev. 1.0.1 17
www.fairchildsemi.com
FSDM0465RS -- Green Mode Fairchild Power Switch (FPSTM)
Package Dimensions
Figure 27. TO-220F-6L (Forming)
Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or obtain the most recent revision. Package specifications do not expand the terms of Fairchild's worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products Always visit Fairchild Semiconductor's online packaging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/.
(c) 2008 Fairchild Semiconductor Corporation FSDM0465RS Rev. 1.0.1 18
www.fairchildsemi.com
FSDM0465RS -- Green Mode Fairchild Power Switch (FPSTM)
(c) 2008 Fairchild Semiconductor Corporation FSDM0465RS Rev. 1.0.1 19
www.fairchildsemi.com

▲Up To Search▲

Price & Availability of FSDM0465RS

	To Download FSDM0465RS Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .