ACT811/B Rev 0, 23-Oct-13 Active Direct Drive™ LED Driver FEATURES GENERAL DESCRIPTION • • • • • • • • • • • • • The ACT811/B is LED driver IC based on ActiveSemi's Patented Active Direct DriveTM Technology and Patent-Pending Active Valley FillTM that adaptively drives a string of variable-weighted LED segments up to 12W directly from an AC line voltage with very few total components. By adaptively modulating the variable-segmentweighted LED string voltage to match the varying AC line voltage, the Active Direct DriveTM Technology results in the ACT811/B having highest efficiency, high power factor, and low total harmonic distortion. The high efficiency and high performance make the ACT811/B ideal for advanced energy saving solid state lighting applications and eases thermal design. Highest Efficiency Solution Up to 12W High Power Factor Low Total Harmonic Distortion Low Component Count Low EMI Low Crest Factor Low Flicker Index Low Strobe Light Motion Effect Electrolytic Capacitor is not necessary No Magnetic Component Over Temperature Protection With very few external components, the ACT811/B ensures high reliability and long life time for LEDbased luminaire designs. In addition, the IC protects the LEDs from over current, and over temperature conditions. The ACT811/B are optimized to operate at 100-120VAC and non-dimmable application up to 12W. Over Current Protection Brightness Stability over AC Line Voltage Variation • Space-Saving, Thermally-Enhanced SOP-16 EP (Exposed Pad) Package • ACT811/B for 100-120VAC Application The ACT811/B also incorporate Active-Semi's Patent-Pending Active Valley FillTM Technology for maintaining smooth light output for the full AC cycle, enabling the LEDs to operate without noticeable flicker or strobe light motion effects. These devices drive the LED string without high frequency switching. APPLICATIONS • Solid State Lighting (SSL) • LED Tubes, Downlights and Bulbs • Replacement of Lamps for 100-120VAC The ACT811/B are available in the SOP-16EP package. TYPICAL APPLICATION DIAGRAM Innovative PowerTM -1- www.active-semi.com Copyright © 2013 Active-Semi, Inc. ACT811/B Rev 0, 23-Oct-13 TABLE OF CONTENTS General Information ..................................................................................................................................... p. 01 Functional Block Diagram ............................................................................................................................ p. 03 Ordering Information .................................................................................................................................... p. 04 Pin Configuration ......................................................................................................................................... p. 04 Pin Descriptions ........................................................................................................................................... p. 05 Absolute Maximum Ratings ......................................................................................................................... p. 06 Electrical Characteristics ............................................................................................................................. p. 07 Typical Performance Characteristics……………………………………………………………………………..p. 09 Functional Description ................................................................................................................................. p. 13 Active Direct DriveTM Controller........................................................................................................ p. 13 Start-Up ............................................................................................................................................ p. 13 Normal Operation ............................................................................................................................. p. 13 Active Valley FillTM ............................................................................................................................ p. 13 LED Arrangement............................................................................................................................. p. 14 PWM and 0-10V Dimming…………………………………………………………………………………p. 14 Protection ......................................................................................................................................... p. 14 SOP-16 EP (EXPOSED PADDLE) Package Outline and Dimensions ....................................................... p. 15 Innovative PowerTM -2- www.active-semi.com Copyright © 2013 Active-Semi, Inc. ACT811/B Rev 0, 23-Oct-13 FUNCTIONAL BLOCK DIAGRAM Innovative PowerTM -3- www.active-semi.com Copyright © 2013 Active-Semi, Inc. ACT811/B Rev 0, 23-Oct-13 ORDERING INFORMATIONcd PART NUMBER TEMPERATURE RANGE PACKAGE PINS PACKING METHOD ACT811YK-T -40°C to 125°C SOP-16EP 16 TAPE & REEL ACT811BYK-T -40°C to 125°C SOP-16EP 16 TAPE & REEL c: All Active-Semi components are RoHS Compliant and with Pb-free plating unless specified differently. The term Pb-free means semiconductor products that are in compliance with current RoHS (Restriction of Hazardous Substances) standards. d: Standard product options are identified in this table. Contact factory for custom options. PIN CONFIGURATION VIN 1 16 VP N/C 2 15 N/C N/C 3 14 TOP VN 4 13 SWD 12 SWC EP (VSS) N/C 5 DIM 6 11 SWB ISET 7 10 SWA MODE 8 9 IREG ACT811/B TOP VIEW SOP-16EP Innovative PowerTM -4- www.active-semi.com Copyright © 2013 Active-Semi, Inc. ACT811/B Rev 0, 23-Oct-13 PIN DESCRIPTIONS PIN NAME 1 VIN Positive rectified AC Voltage. Connect to the positive output of the full bridge rectifier. 2 N/C Not Connected. 3 N/C Not Connected. 4 VN Negative rectified AC Voltage. Connect to the negative output of the full bridge rectifier. 5 N/C Not Connected. 6 DIM Dimming Control Pin. To dim the LED power, drive the DIM voltage from 0 to 2.35V. Without dimming control, connect a bypass capacitor 1uF to VSS. See more information in Dimming Section. 7 ISET Current Setting. Connect a resistor RISET between ISET and VSS to determine the LED current. 8 MODE Mode selection of LED arrangement. As for LED string A-B-C-D-TOP(M), MODE = VSS to select 3-6-6-18-TOP(M), or MODE = Floating for 2-4-8-16-TOP(M). See more information in LED Arrangement Section. 9 IREG Current Regulation Output. Connect to the bottom of LED string. 10 SWA LED Switch A. 11 SWB LED Switch B. 12 SWC LED Switch C. 13 SWD LED Switch D. 14 TOP LED String Top. Connect to the top of LED string. 15 N/C Not Connected. 16 VP Positive Supply Voltage. Connect a capacitor CFILL with appropriate voltage rating between VP pin and VSS pin. EP VSS Innovative PowerTM DESCRIPTION Ground. Exposed Pad shown as dashed block. The exposed ground pad must be electrically connected to Ground. -5- www.active-semi.com Copyright © 2013 Active-Semi, Inc. ACT811/B Rev 0, 23-Oct-13 ABSOLUTE MAXIMUM RATINGSc PARAMETER VALUE UNIT VIN, VP, TOP to VSS -0.3 to 200 V TOP to SWD -0.3 to 70 V SWD to SWC -0.3 to 70 V SWC to SWB -0.3 to 32 V SWB to SWA -0.3 to 25 V SWA to IREG -0.3 to 15 V IREG to VSS -0.3 to 25 V ISET, MODE, DIM to VSS -0.3 to 5 V -200 to 0.3 V Maximum Power Dissipation (TA = 85°C) 1.5 W Thermal Resistance (θJC) 40 °C/W Storage temperature range –65 to 150 °C Junction temperature range –40 to 150 °C 300 °C ESD, Human Body Model, ESDA/JEDEC JDS-001-2012 2 1.6 (pin 6) KV ESD, Machine Model, JEDEC EIA/JESD22-A115 250 100 (pin 6) V VN to VSS Lead temperature (soldering, 10 seconds) c: Do not exceed these limits to prevent damage to the device. Exposure to absolute maximum rating conditions for long periods may affect device reliability. Innovative PowerTM -6- www.active-semi.com Copyright © 2013 Active-Semi, Inc. ACT811/B Rev 0, 23-Oct-13 ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT 135 VAC Input Supply Operating Voltage Range Under Voltage Lockout (UVLO) Threshold Supply Current Vop VUVLO IVP 90 VP Rising, Hysteresis = 2.0V 22 VVP = 100V 400 V 1700 µA Controller Lamp Power PLAMP ISET Voltage VISET ISET Current IISET Current Setting Ratio KISET IREG Current 12 W RISET=91KΩ 2.35 V RISET=91KΩ 26 µA ACT811, CNT=0000 5550 A/A ACT811B, CNT=0000 2900 A/A RISET=91KΩ, CNT=0000 ACT811 130 140 150 mA ACT811B 69 75 81 mA RISET=91KΩ, CNT=1111 ACT811 75 mA ACT811B 140 mA IIREG IREG Discharge Current Ratio KDCHG RISET=91KΩ 0.8 A/A IREG Clamp Threshold VCLIREG CNT=1111 15 V LED Tracking Rising Threshold LED Tracking Falling Threshold LED Switch Tracking Delay Innovative PowerTM ACT811, CNT=0000, RISET=91KΩ MODE=VSS 10.8 V MODE=N/C 7.5 V ACT811B, CNT=0000, RISET=91KΩ MODE=VSS 10.6 V MODE=N/C 7.1 V VTRACKF 1 V TTRK 80 µs VTRACKR -7- www.active-semi.com Copyright © 2013 Active-Semi, Inc. ACT811/B Rev 0, 23-Oct-13 ELECTRICAL CHARACTERISTICS CONT’D (TA = 25°C unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT LED Switches LED Switch On Resistance LED Switch Leakage Current RQSWA QSWA, ISWA = 30mA 3 5 RQSWB QSWB, ISWB = 30mA 5 10 RQSWC QSWC, ISWC = 30mA 10 20 RQSWD QSWD, ISWD = 30mA 10 20 ILKG QSWA, QSWB, QSWC, QSWD, VDS = Abs Max 10 Ω µA Protections Thermal Regulation Threshold 135 TFB 155 °C RQVN IVN = 10mA 25 VN Current Limit IVNMAX ACT811, CNT=0000 ACT811B, CNT=0000 280 170 mA IREG High Detection Voltage VIREGHI 23 V VVN = -150V 2 mA Vin Rising 80 V VN Start-Up Current IVNSU 50 Ω VN Switch On Resistance Valley Fill Stop-Discharge Threshold Innovative PowerTM VSTDCHG -8- www.active-semi.com Copyright © 2013 Active-Semi, Inc. ACT811/B Rev 0, 23-Oct-13 TYPICAL PERFORMANCE CHARACTERISTICS (TA = 25°C, VIN = 120VAC, unless otherwise specified.) ISET Pin Voltage vs. ISET Resistor ISET Pin Voltage vs. VP Pin Voltage 2.300 2.400 ISET Pin Voltage (V) ISET Pin Voltage (V) 2.350 ACT811/B-002 2.420 ACT811/B-001 2.400 2.250 2.200 2.150 2.100 2.380 2.360 2.340 2.320 2.300 2.000 45 25 65 85 105 125 145 90 165 110 Lamp Power vs. ISET Resistor Maximum Lamp Power (W) 8.0 MODE = VSS MODE = Floating 3.5 2 ACT811/B-004 Lamp Power (W) 190 17.5 ACT811/B-003 9.5 16 14.5 13 11.5 Stable Lighting 10 8.5 90 110 130 150 170 190 50 60 70 80 90 100 o ISET Resistor (kΩ) Case Temperature ( C) ISET Pin Voltage Over Temperature LED Current Over Temperature 2.000 140 LED Current (mA) 2.350 ACT811/B-006 ACT811/B-005 2.700 ISET Pin Voltage (V) 170 Maximum Power vs. Case Temperature 11 5.0 150 ISET Resistor (kΩ) VP Pin Voltage (V) 6.5 130 1.650 1.300 0.950 ACT811, CNT=0000 70 ACT811B, CNT=0000 0.600 0.250 -20 0 20 40 60 80 100 120 140 0 -20 160 Temperature ( oC) Innovative PowerTM 0 20 40 60 80 100 120 140 160 o Temperature ( C) -9- www.active-semi.com Copyright © 2013 Active-Semi, Inc. ACT811/B Rev 0, 23-Oct-13 TYPICAL PERFORMANCE CHARACTERISTICS CONT’D (TA = 25°C, VIN = 120VAC, unless otherwise specified.) SWA On Resistance Over Temperature SWB On Resistance Over Temperature SWB On Resistance (Ω) SWA On Resistance (Ω) 3.5 3 2.5 2 ACT811/B-008 9 ACT811/B-007 4 8 7 6 5 4 3 1.5 -30 -10 10 30 50 70 90 110 130 150 -30 -10 10 o SWC On Resistance Over Temperature 90 110 130 150 SWD On Resistance Over Temperature SWD On Resistance (Ω) 16 14 12 10 ACT811/B-0010 18 ACT811/B-009 SWC On Resistance (Ω) 70 Temperature ( C) 18 16 14 12 10 8 8 6 -30 -10 10 30 50 70 90 110 130 6 -30 150 -10 10 30 50 70 90 110 130 150 o o Temperature ( C) Temperature ( C) QVN On Resistance Over Temperature ACT811/B-011 55 QNV On Resistance (Ω) 50 o Temperature ( C) 60 30 50 45 40 35 30 25 20 -30 -10 10 30 50 70 90 110 130 150 o Temperature ( C) Innovative PowerTM - 10 - www.active-semi.com Copyright © 2013 Active-Semi, Inc. ACT811/B Rev 0, 23-Oct-13 TYPICAL PERFORMANCE CHARACTERISTICS CONT’D (TA = 25°C, VIN = 120VAC, unless otherwise specified.) TOP and VP Waveforms, ACT811B TOP and VP Waveforms, ACT811 ACT811/B-013 ACT811/B-012 CH1 CH1 CH2 CH2 CH1: VTOP, 50V/div CH2: VVP, 50V/div TIME: 2.50ms/div CH1: VTOP, 50V/div CH2: VVP, 50V/div TIME: 2.50ms/div TOP and IREG Waveforms, ACT811B TOP and IREG Waveforms, ACT811 ACT811/B-015 ACT811/B-014 CH1 CH1 CH2 CH2 CH1: VTOP, 50V/div CH2: VIREG, 5V/div TIME: 2.50ms/div CH1: VTOP, 50V/div CH2: VIREG, 5V/div TIME: 2.50ms/div VIN V and TOP I Waveforms, ACT811B VIN V and TOP I Waveforms, ACT811 ACT811/B-017 ACT811/B-016 CH1 CH1 CH2 CH2 CH1: VVIN, 50V/div CH2: ITOP, 50mA/div TIME: 4ms/div Innovative PowerTM CH1: VVIN, 50V/div CH2: ITOP, 50mA/div TIME: 4ms/div - 11 - www.active-semi.com Copyright © 2013 Active-Semi, Inc. ACT811/B Rev 0, 23-Oct-13 TYPICAL PERFORMANCE CHARACTERISTICS CONT’D (TA = 25°C, VIN = 120VAC, unless otherwise specified.) VIN V and I Waveforms, ACT811B VIN V and I Waveforms, ACT811 ACT811/B-019 ACT811/B-018 CH1 CH1 CH2 CH2 CH1: VVIN, 50V/div CH2: IVIN, 100mA/div TIME: 4ms/div CH1: VVIN, 50V/div CH2: IVIN, 100mA/div TIME: 4ms/div TOP V and I Waveforms, ACT811B TOP V and I Waveforms, ACT811 ACT811/B-021 ACT811/B-020 CH1 CH1 CH2 CH2 CH1: VTOP, 50V/div CH2: ITOP, 50mA/div TIME: 2ms/div CH1: VTOP, 50V/div CH2: ITOP, 100mA/div TIME: 2ms/div Innovative PowerTM - 12 - www.active-semi.com Copyright © 2013 Active-Semi, Inc. ACT811/B Rev 0, 23-Oct-13 FUNCTIONAL DESCRIPTION Active Direct DriveTM Controller The ACT811/B utilizes Active-Semi's Patented Active Direct DriveTM and Active Valley FillTM Technologies that adaptively drives a string of LEDs up to 12W directly from an AC line voltage. As the instantaneous AC line voltage varies, the ACT811/B adaptively adjusts the number of active LEDs in a variable-weighted LED string to track the instantaneous rectified line voltage. The result is a very simple driver circuit with high power transfer and minimal power loss. As shown in the Typical Application Circuit, the ACT811/B application circuit comprises a full-wave bridge diode, with the positive output of the rectified line voltage going to the VIN pin of the ACT811/B, while the negative output of the rectified line voltage going to the VN pin. The string of LEDs is divided into 5 groups, named LED groups A, B, C, D, and M. The top of LED groups A, B, C, and D are each connected to the SWA, SWB, SWC, and SWD pins, respectively. The top of LED group M is connected to the positive output of rectified line voltage via a anti-reverse protection diode. In addition, a valley fill capacitor CFILL is connected between the VP pin and VSS pin, while the current setting resistor RISET is connected between ISET and VSS. Within the IC, an Active-Semi's Patented Active Direct DriveTM Controller generates a signal to control a sequential string of LED switches QSWA, QSWB, QSWC, and QSWD for driving SWA, SWB, SWC, and SWD pins, respectively. Each of these LED switches is either On or Off, thereby shorting out or leaving the corresponding LED group active in the current path. By appropriately determining which LED groups to be active and which LED groups to be shorted out, the Controller ensures that the total number of active LEDs track the instantaneous rectified line voltage. The LED current is regulated and set by the external RISET resistor. In addition, a QVF switch connects the TOP terminal to VP terminal when discharging the valley fill capacitor. The Current Regulator controls the gate of the QREG switch so that the current through QREG is inversely proportional at ACT811 or proportional at ACT811B to the number of active LEDs in the string. The number of active LEDs track optimally to the rectified line voltage. Furthermore, since the LED current is inversely proportional to the number of active LEDs, the instantaneous LED power is approximately constant for most of the Normal region operation at ACT811; Regarding ACT811B, since the current is proportional, it gains PF >0.95 Innovative PowerTM and THD <30%. In the event that the LED tracking algorithm fails, the IC goes into the Protection Mode. Start-Up When power is first applied, the IC is in the Disabled state. The Internal Supply block starts to charge the CFILL. When the VP voltage is higher than the Under Voltage Lockout Threshold, the IC enters the Normal state. Normal Operation Average IREG current (LED current) is set by ISET resistor by following equations: ISET = VISET / RISET IREG Current = KISET • ISET The Controller detects the gap between the voltage of IREG and ground, and compares against the LED Tracking Rising / Falling Threshold. If the gap voltage is higher than LED Tracking Rising Threshold and the line voltage is rising, the controller increases the number of active LEDs. If gap voltage is less than LED Tracking Falling Threshold and the line voltage is decreasing, the controller decreases the number of active LEDs. By following this proprietary algorithm, the number of active LEDs optimally track the rectified line voltage while ensuring that the gap voltage is between Tracking Rising Threshold and Tracking Falling Threshold. In the event that LED tracking algorithm fails to maintain the IREG lower than LED Fault Detection Threshold, the IC goes into the Protection state. Active Valley Fill™ The Patent-Pending Valley Fill operations works as follows. The Valley Fill Block controls 2 states in a line cycle, Normal and Discharge states. When VIN is increasing in Normal states, the CFILL capacitor is charged through the forward-biased QVF body diode junction. The charging continues until VP reaches its peak value. As VIN decreases, the Valley Fill Block remains in Normal states until the number active LEDs is minimum, upon which the Valley Fill block enters the Discharge state. In the Discharge state, CFILL - 13 - www.active-semi.com Copyright © 2013 Active-Semi, Inc. ACT811/B Rev 0, 23-Oct-13 FUNCTIONAL DESCRIPTION reduced linearly according to the temperature increment, and the luminous output is regulated stably without blinking. discharges to supply power to all LED groups A, B, C, D and M. LED current is reduced to 80% in discharge state. LED Arrangement For optimal efficiency with simple driving mechanism, the ACT811/B follows Active-Semi’s Patented Direct Drive variable segmentation of the LED string. The total number of LEDs in the string is set to track the peak of the rectified line voltage, while the IC switches control the LEDs in a variableweighted manner, with LED group A being the lowest weight and LED group D being the largest weight. 3. Input Current Limit: The maximum current is limited under the VN Current Limit (IVNMAX) to protect the IC and system. LED Arrangement is programmed by using MODE pin. Respectively, A, B, C and D groups have 2, 4, 8 and 16 LEDs when MODE is floating, and 3, 6, 6, 18 LED when MODE is tied to VSS. The group M number of LEDs is chosen to complement to the peak of the rectified line voltage in addition to group A, B, C and D for 100-120VAC. PWM and 0-10V Dimming The PWM or 0-10V dimming signal goes through a filter to control the DIM at range of 0V - 2.35V to adjust the LED current. The DIM pin is required to connect a bypass capacitor 1uF to VSS. For PWM signal dimming, a resistor is connected to the DIM coupling with the bypass capacitor as a lowpass filter. When the PWM control signal inputs, it’s filtered to the range of 0V - 2.35V. For 0-10V analog dimming, a voltage divider network is applied to turn into 0V - 2.35V range to control the LED current. Protection The ACT811/B incorporates multiple levels of protection to ensure ruggedness in operation. These include: 1. Hot Plug Protection: When hot plugging, there is spike voltage at VIN to VN much higher than normal operation. If the voltage at IREG is higher than IREG High Detection Voltage (VIREGHI), the circuit is protected in this short period until entering normal operation. 2. Over Temperature Protection: When IC junction temperature is higher than the Thermal Regulation Threshold (TFB), the current is Innovative PowerTM - 14 - www.active-semi.com Copyright © 2013 Active-Semi, Inc. ACT811/B Rev 0, 23-Oct-13 SOP-16 EP (EXPOSED PADDLE) PACKAGE OUTLINE AND DIMENSIONS E DIMENSION IN MILLIMETERS DIMENSION IN INCHES MIN MAX MIN MAX A 1.350 1.700 0.053 0.067 A1 0.020 0.120 0.001 0.005 A2 1.350 1.550 0.053 0.061 b 0.380 0.470 0.015 0.019 c 0.200 0.250 0.008 0.010 D 9.860 10.06 0.388 0.396 D1 3.300 4.000 0.130 0.157 E 3.800 4.000 0.150 0.157 E1 5.800 6.200 0.228 0.244 E2 1.780 2.500 0.070 0.098 D D1 SYMBOL b e E2 A1 E1 A2 A e L θ c 1.270 TYP 0.050 TYP L 0.450 0.800 0.018 0.031 θ 0° 8° 0° 8° Active-Semi, Inc. reserves the right to modify the circuitry or specifications without notice. Users should evaluate each product to make sure that it is suitable for their applications. Active-Semi products are not intended or authorized for use as critical components in life-support devices or systems. Active-Semi, Inc. does not assume any liability arising out of the use of any product or circuit described in this datasheet, nor does it convey any patent license. Active-Semi and its logo are trademarks of Active-Semi, Inc. For more information on this and other products, contact [email protected] or visit http://www.active-semi.com. is a registered trademark of Active-Semi. Innovative PowerTM - 15 - www.active-semi.com Copyright © 2013 Active-Semi, Inc.