FSQ0765RWDTU Fairchild Semiconductor, FSQ0765RWDTU Datasheet

IC SWIT PWM GREEN UVLO TO220F

FSQ0765RWDTU

Manufacturer Part Number
FSQ0765RWDTU
Description
IC SWIT PWM GREEN UVLO TO220F
Manufacturer
Fairchild Semiconductor
Datasheet

Specifications of FSQ0765RWDTU

Output Isolation
Isolated
Frequency Range
59.6 ~ 75.8kHz
Voltage - Input
9 ~ 20 V
Voltage - Output
650V
Power (watts)
70W
Operating Temperature
25°C ~ 85°C
Package / Case
TO-220-6 Formed Leads
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
FSQ0765RWDTU
Manufacturer:
FSC
Quantity:
60 000
FSQ0565R, FSQ0765R Rev. 1.0.1
© 2008 Fairchild Semiconductor Corporation
FSQ0565R, FSQ0765R
Green-Mode Fairchild Power Switch (FPS™) for
Quasi-Resonant Operation -
Features
Applications
Related Resourses
Visit: http://www.fairchildsemi.com/apnotes/ for:
Optimized for Quasi-Resonant Converter (QRC)
Low EMI through Variable Frequency Control and AVS
(Alternating Valley Switching)
High-Efficiency through Minimum Voltage Switching
Narrow Frequency Variation Range over Wide Load
and Input Voltage Variation
Advanced Burst-Mode Operation for Low Standby
Power Consumption
Simple Scheme for Sync Voltage Detection
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)
Under-Voltage Lockout (UVLO) with Hysteresis
Internal Start-up Circuit
Internal High-Voltage Sense FET (650V)
Built-in Soft-Start (17.5ms)
Power Supply for LCD TV and Monitor, VCR, SVR,
STB, and DVD & DVD Recorder
Adapter
AN-4134: Design Guidelines for Offline Forward
Converters Using Fairchild Power Switch (FPS
AN-4137: Design Guidelines for Offline Flyback
Converters Using Fairchild Power Switch (FPS
AN-4140: Transformer Design Consideration for
Offline Flyback Converters Using Fairchild Power
Switch (FPS
AN-4141: Troubleshooting and Design Tips for
Fairchild Power Switch (FPS
AN-4145: Electromagnetic Compatibility for Power
Converters
AN-4147: Design Guidelines for RCD Snubber of
Flyback
AN-4148: Audible Noise Reduction Techniques for
Fairchild Power Switch Fairchild Power Switch(FPS
Applications
AN-4150: Design Guidelines for Flyback Converters
Using FSQ-Series Fairchild Power Switch (FPS
)
) Flyback Applications
)
)
)
™)
Description
A Quasi-Resonant Converter (QRC) generally shows
lower EMI and higher power conversion efficiency than a
conventional hard-switched converter with a fixed
switching frequency. The FSQ-series is an integrated
Pulse-Width
SenseFET specifically designed for quasi-resonant
operation and Alternating Valley Switching (AVS). 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 a loop compensation, and self-protection circuitry.
Compared with a discrete MOSFET and PWM controller
solution, the FSQ-series can reduce total cost,
component count, size, and weight; while simultaneously
increasing efficiency, productivity, and system reliability.
This device provides a basic platform for cost-effective
designs of quasi-resonant switching flyback converters.
Low EMI and High Efficiency
Modulation
(PWM)
controller
www.fairchildsemi.com
June 2008
and

Related parts for FSQ0765RWDTU

FSQ0765RWDTU Summary of contents

Page 1

... AN-4148: Audible Noise Reduction Techniques for Fairchild Power Switch Fairchild Power Switch(FPS Applications AN-4150: Design Guidelines for Flyback Converters Using FSQ-Series Fairchild Power Switch (FPS © 2008 Fairchild Semiconductor Corporation FSQ0565R, FSQ0765R Rev. 1.0.1 Low EMI and High Efficiency Description A Quasi-Resonant Converter (QRC) generally shows ...

Page 2

... AC 3. Typical continuous power in a non-ventilated enclosed adapter measured at 50°C ambient temperature. 4. Maximum practical continuous power in an open-frame design at 50°C ambient. 5. These parts are RoHS compliant. © 2008 Fairchild Semiconductor Corporation FSQ0565R, FSQ0765R Rev. 1.0.1 Maximum Output Power (2) Current ...

Page 3

... Application Diagram AC IN Internal Block Diagram 0.35/0. Burst CC ref I I delay < OSP after SS LPF V OSP OVP © 2008 Fairchild Semiconductor Corporation FSQ0565R, FSQ0765R Rev. 1.0.1 V str Drain PWM Sync GND Figure 1. Typical Flyback Application Sync 5 AVS OSC PWM Soft- LEB Start 250ns S Q ...

Page 4

... V str nal capacitor connected to the V disabled not recommended to connect V © 2008 Fairchild Semiconductor Corporation FSQ0565R, FSQ0765R Rev. 1.0.1 FSQ0765R Rev.00 Figure 3. Pin Configuration (Top View) Description pin. Once V ...

Page 5

... Junction-to-Ambient Thermal Resistance JA θ Junction-to-Case Thermal Resistance JC Notes: 8. Free standing with no heat-sink under natural convection. 9. Infinite cooling condition - refer to the SEMI G30-88. © 2008 Fairchild Semiconductor Corporation FSQ0565R, FSQ0765R Rev. 1.0.1 = 25°C, unless otherwise specified. A Parameter FSQ0565R FSQ0765R T = 25°C ...

Page 6

... FB D Minimum Duty Cycle MIN V START UVLO Threshold Voltage V STOP t Internal Soft-Start Time S/S BURST-MODE SECTION V BURH V Burst-Mode Voltages BURL Hysteresis © 2008 Fairchild Semiconductor Corporation FSQ0565R, FSQ0765R Rev. 1.0.1 Condition 100µ 560V DS FSQ0565R T = 25° 0. FSQ0765R T = 25° ...

Page 7

... CH V Minimum V Supply Voltage STR STR Notes: 10. Propagation delay in the control IC. 11. Guaranteed by design, but not tested in production. 12. Includes gate turn-on time. © 2008 Fairchild Semiconductor Corporation FSQ0565R, FSQ0765R Rev. 1.0.1 (Continued) Condition FSQ0565R T = 25°C, di/dt = 370mA/µs J FSQ0765R T = 25°C, di/dt = 460mA/µs ...

Page 8

... Burst-Mode Operation Operation Strong Protections OLP, OVP ° 145 C without TSD Hysteresis © 2008 Fairchild Semiconductor Corporation FSQ0565R, FSQ0765R Rev. 1.0.1 FSQ-Series FSQ-Series Advantages Improved efficiency by valley switching Quasi-Resonant Reduced EMI noise Operation Reduced components to detect valley point Valley Switching Reduce EMI Noise ...

Page 9

... Figure 6. UVLO Stop Threshold Voltage (V ) vs. T STOP 1.2 1.0 0.8 0.6 0.4 0.2 0.0 -40 - Temperature [°C] Figure 8. Initial Switching Frequency (f © 2008 Fairchild Semiconductor Corporation FSQ0565R, FSQ0765R Rev. 1.0.1 = 25°C. A 1.2 1.0 0.8 0.6 0.4 0.2 0 100 120 -40 ) vs. T Figure 5. UVLO Start Threshold Voltage ...

Page 10

... Figure 12. Shutdown Delay Current (I 1.2 1.0 0.8 0.6 0.4 0.2 0.0 -40 - Temperature [°C] Figure 14. Burst-Mode Low Threshold Voltage (V ) vs. T burl © 2008 Fairchild Semiconductor Corporation FSQ0565R, FSQ0765R Rev. 1.0.1 (Continued) = 25°C. A 1.2 1.0 0.8 0.6 0.4 0.2 0 100 120 -40 ) vs. T Figure 11. Feedback Source Current (I ...

Page 11

... Figure 18. Shutdown Feedback Voltage (V 1.2 1.0 0.8 0.6 0.4 0.2 0.0 -40 - Temperature [°C] Figure 20. Sync High Threshold Voltage vs. T SH2 © 2008 Fairchild Semiconductor Corporation FSQ0565R, FSQ0765R Rev. 1.0.1 (Continued) = 25°C. A 1.2 1.0 0.8 0.6 0.4 0.2 0 100 120 -40 Figure 17. Sync Low Threshold Voltage ...

Page 12

... D2 is clamped at this voltage, clamping V *. Therefore, the peak value of the current FB through the SenseFET is limited. © 2008 Fairchild Semiconductor Corporation FSQ0565R, FSQ0765R Rev. 1.0.1 2.2 Leading-Edge Blanking (LEB): At the instant the internal SenseFET is turned on, a high-current spike usually occurs through the SenseFET, caused by ...

Page 13

... sync internal delay Figure 26. V < 4. sync © 2008 Fairchild Semiconductor Corporation FSQ0565R, FSQ0765R Rev. 1.0 case of a heavy W and waits for B B goes below 4.4V sync , the Figure 27. After V 4. Protection Circuits: The FSQ-series has several I DS ...

Page 14

... The voltage across the resistor is compared with a preset AOCP level. If the sensing resistor voltage is greater than the AOCP level, the set signal is applied to the latch, resulting in the shutdown of the SMPS. © 2008 Fairchild Semiconductor Corporation FSQ0565R, FSQ0765R Rev. 1.0.1 3R PWM R AOCP FSQ0765R Rev ...

Page 15

... This mode helps prevent transformer saturation and reduces stress on the secondary diode during start-up. © 2008 Fairchild Semiconductor Corporation FSQ0565R, FSQ0765R Rev. 1.0.1 6. Burst Operation: To minimize power dissipation in standby mode, the FPS enters burst-mode operation. As the load decreases, the feedback voltage decreases ...

Page 16

... DS B GateX2: Counting V every 2 pulses independent on other signals. gate FSQ0765R Rev. 00 © 2008 Fairchild Semiconductor Corporation FSQ0565R, FSQ0765R Rev. 1.0.1 8. AVS (Alternating Valley Switching): Due to the quasi-resonant operation with limited frequency, the (Case D). Therefore, W switching frequency varies depending on input voltage, load transition, and so on. At high input voltage, the switching on time is relatively small compared to low input voltage ...

Page 17

... When the heat sink is connected to the ground, it should be connected to the power ground. If possible, avoid using jumper wires for power ground and drain. Mylar® registered trademark of DuPont Teijin Films. © 2008 Fairchild Semiconductor Corporation FSQ0565R, FSQ0765R Rev. 1.0.1 PWM controller and ...

Page 18

... LF101 34mH R101 2MΩ 1W C101 RT1 150nF F1 5D-9 275VAC FUSE 250V 2A © 2008 Fairchild Semiconductor Corporation FSQ0565R, FSQ0765R Rev. 1.0.1 Input Voltage Rated Output Power Range 85-265V AC input and 0.5W load R103 C104 4.7nF 33kΩ 2 630V 1W R104 D101 20Ω ...

Page 19

... Insulation: Polyester Tape t = 0.025mm, 2 Layers N /2 12V Insulation: Polyester Tape t = 0.025mm, 2 Layers Bottom Electrical Characteristics Inductance Leakage 5. Core & Bobbin Core: EER3016 (Ae=109.7mm Bobbin: EER3016 © 2008 Fairchild Semiconductor Corporation FSQ0565R, FSQ0765R Rev. 1.0.1 FSQ0765R Rev. 12V (0.4φ) L12V (TIW 0.5φ, 2parallel) /2 ...

Page 20

... C104 4.7nF/630V C105 33nF/50V C106 100nF/50V C107 47µF/50V C201 1000µF/25V C202 1000µF/25V C203 1000µF/10V C204 1000µF/10V © 2008 Fairchild Semiconductor Corporation FSQ0565R, FSQ0765R Rev. 1.0.1 Note Part C205 1W C301 1/2W 1W L201 1W L202 optional, 1/4W 1/4W D101 1/4W ...

Page 21

... Package Dimensions TO-220F-6L (Forming) MKT-TO220A06revB © 2008 Fairchild Semiconductor Corporation FSQ0565R, FSQ0765R Rev. 1.0.1 Figure 40. 6-Lead, TO-220 Package 21 www.fairchildsemi.com ...

Page 22

... Fairchild Semiconductor Corporation FSQ0565R, FSQ0765R Rev. 1.0.1 22 www.fairchildsemi.com ...

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