fl6961 Fairchild Semiconductor, fl6961 Datasheet

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fl6961

Manufacturer Part Number
fl6961
Description
Single-stage Flyback And Boundary Mode Pfc Controller For Lighting
Manufacturer
Fairchild Semiconductor
Datasheet
© 2010 Fairchild Semiconductor Corporation
FL6961 • Rev. 1.0.1
FL6961
Single-Stage Flyback and Boundary Mode PFC
Controller for Lighting
Features
Applications
Ordering Information
Part Number
FL6961MY
Boundary Mode PFC Controller
Low Input Current THD
Controlled On-Time PWM
Zero-Current Detection
Cycle-by-Cycle Current Limiting
Leading-Edge Blanking instead of RC Filtering
Low Startup Current: 10µA Typical
Low Operating Current: 4.5mA Typical
Feedback Open-Loop Protection
Programmable Maximum On-Time (MOT)
Output Over-Voltage Clamping Protection
Clamped Gate Output Voltage 16.5V
General LED Lighting
Industrial, Commercial and Residential Fixtures
Outdoor Lighting : Street, Roadway, Parking,
Construction and Ornamental LED Lighting
Fixtures
Operating Temperature
-40°C to +125°C
Range
8-Pin, Small Outline Package (SOP)
Description
The FL6961 is general lighting power controller for low
to high power lumens applications requiring power
factor correction. It is designed for flyback, or boost
converter operating in boundary-mode. The FL6961
provides a controlled on-time to regulate the output DC
voltage and achieve natural power factor correction.
The maximum on-time of the external switch is
programmable to ensure safe operation during AC
brownouts. An innovative multi-vector error amplifier is
built in to provide rapid transient response and precise
output voltage clamping. A built-in circuit disables the
controller if the output feedback loop is opened. The
startup current is lower than 20µA and the operating
current has been reduced to under 6mA. The supply
voltage can be up to 25V, maximizing application
flexibility.
Package
Packing Method
November 2010
Tape & Reel
www.fairchildsemi.com

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fl6961 Summary of contents

Page 1

... Fairchild Semiconductor Corporation FL6961 • Rev. 1.0.1 Description The FL6961 is general lighting power controller for low to high power lumens applications requiring power factor correction designed for flyback, or boost converter operating in boundary-mode. The FL6961 provides a controlled on-time to regulate the output DC voltage and achieve natural power factor correction ...

Page 2

... INV 2.5V VOLTAGE REGULATOR UVLO V = 12V CC_ON V = 9.5V CC_OFF GND 6 © 2010 Fairchild Semiconductor Corporation FL6961 • Rev. 1.0 VCC INV 7 GATE COMP GND MOT ZCD Typical Application Circuit for Step-up Converter Typical Application Circuit for Single Stage PFC Converter ...

Page 3

... Driver Output. Totem-pole driver output to drive the external power MOSFET. The clamped gate 7 GATE output voltage is 16.5V Power Supply. Driver and control circuit supply voltage. CC © 2010 Fairchild Semiconductor Corporation FL6961 • Rev. 1.0.1 F- Fairchild Logo Z- Plant Code X- Year Code Y- Week Code TT: Die Run Code T: Package Type (M=SOP Free M: Manufacture Flow Code Figure 4 ...

Page 4

... The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not recommend exceeding them or designing to Absolute Maximum Ratings. Symbol T Operating Ambient Temperature A © 2010 Fairchild Semiconductor Corporation FL6961 • Rev. 1.0.1 Parameter Parameter 4 Min. Max. 30 -0.3 30 ...

Page 5

... Z OUT V Output Voltage Low OL V Output Voltage High OH t Rising Time R t Falling Time F © 2010 Fairchild Semiconductor Corporation FL6961 • Rev. 1.0.1 =-40°C to 125°C. Current is defined as positive into the device and J Conditions V =V – 0.16V CC CC-ON V =12V, V =0V =3nF, f ...

Page 6

... Disable Function Debounce Time ZCD-DIS Maximum On Time Section V Maximum On Time Voltage MOT Maximum On Time Programming t ON-MAX (Resistor Based) © 2010 Fairchild Semiconductor Corporation FL6961 • Rev. 1.0.1 =-40°C to 125°C. Current is defined as positive into the device and negative J Conditions V Increasing ZCD V Decreasing ZCD I ...

Page 7

... Temperature (℃) Figure 6. V REF 24.60 24.52 24.44 24.36 24.28 24.20 -40 -25 - Temperature (℃) Figure 8. t ON-MAX 10.5 10.1 9.7 9.3 8.9 8.5 -40 -25 - Temperature (℃) Figure 10. V th-OFF © 2010 Fairchild Semiconductor Corporation FL6961 • Rev. 1.0.1 3.0 2.4 1.8 1.2 0.6 0 110 125 -40 -25 -10 vs 14.0 13.4 12.8 12.2 11.6 11 110 125 vs 16.0 13.6 11.2 8.8 6 ...

Page 8

... Temperature (℃) Figure 12. V MOT 0.87 0.85 0.83 0.81 0.79 0.77 -40 -25 - Temperature (℃) Figure 14 © 2010 Fairchild Semiconductor Corporation FL6961 • Rev. 1.0.1 (Continued) 18.0 17.4 16.8 16.2 15.6 15 110 125 vs 110 125 vs -40 -25 - ...

Page 9

... Slope compensation and built-in debounce circuit can alleviate this problem. Because the FL6961 has a single ground pin, high sink current at the output cannot be returned separately. Good high-frequency or RF layout practices should be followed. Avoiding long PCB traces and component ...

Page 10

... 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/. © 2010 Fairchild Semiconductor Corporation FL6961 • Rev. 1.0 ...

Page 11

... Fairchild Semiconductor Corporation FL6961 • Rev. 1.0.1 11 www.fairchildsemi.com ...

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