BW7383 6 Pin Non-isolation Buck current control IC with High PFC for LED Lighting Description BW7383 is a non-isolation Buck type control IC with active power factor correction function for LED lighting application. The IC achieves high power factor and high efficiency by BCM mode. The line and load regulation of LED current is about ±2.5% because of particular control method. Pin Configurations (Top View) BW7383 also provides gate driving voltage clamping, VCC over voltage protection and system output open/short circuit protection to increase IC performance. Features • Universal Input Voltage Range from 90VAC to 264VAC • Transition-mode PFC operating • Built-in Active Power Factor Correction Technique Applications • Constant Output Current Control LED driver • LED lighting • Good Line and Load Regulation • Down light • Open-LED Protection on DMG and VCC pin • Tube lamp • Over-Voltage Protection on VCC pin • PAR lamp • Short-LED Protection • Bulb • Cycle by Cycle Over current Protection on CS pin • Over-Temperature Protection • Gate Driving Voltage Clamping • SOT26 Package Available • RoHS compliant package Packing & Order Information 3,000/Reel PIN DESCRIPTIONS Pin Name Pin Description VCC Power supply pin for all internal circuit GND Ground return for all internal circuit OUT Gate driver output RT Efficiency / THD option pin COM Output pin of error amplifier CS Input current sense pin Publication Order Number: [BW7383] © Bruckewell Technology Corporation Rev. A -2014 BW7383 6 Pin Non-isolation Buck current control IC with High PFC for LED Lighting TYPICAL APPLICATION CIRCUITS ABSOLUTE MAXIMUM RATINGS (Note 1) Parameter Symbol Range Unit Power supply pin VCC 40 V DMG voltage to GND VDMG -0.3 to 40 V CS voltage to GND VCS -0.3 to 5.5 V OUT voltage to GND VOUT -0.3 to 40 V COM voltage to GND VCOM -0.3 to 5.5 V TJ -40 to +150 °C Storage temperature rang TSTG -65 to +150 °C Lead temperature (Soldering 10 sec) TLEAD 260 °C Power dissipation @TA=25°C PD 0.3 W Thermal resistance junction to ambient (Note 2) θJA 220 °C/W Thermal Resistance θJC 106.6 °C/W VESD 2 kV Maximum junction temperature ESD rating, Human body mode (Note 3) Publication Order Number: [BW7383] © Bruckewell Technology Corporation Rev. A -2014 BW7383 6 Pin Non-isolation Buck current control IC with High PFC for LED Lighting RECOMMENDED OPERATING CONDITIONS (Note 4) Parameter Symbol Operation Conditions Unit Power supply pin VCC 34.5 V DMG voltage to GND VDMG -0.3 to 11.2 V CS voltage to GND VCS -0.3 to 5 V OUT voltage to GND VOUT -0.3 to 19 V COM voltage to GND VCOM -0.3 to 5 V Operating Junction Temperature Range TJ -40 to +125 °C Operating Ambient Temperature Range TOPA -40 to +85 °C Note 1: Stresses listed as the above “Absolute Maximum Ratings” may cause permanent damage to the device. These are for stress ratings. Functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may remain possibility to affect device reliability. Note 2: Thermal Resistance is specified with the component mounted on a low effective thermal conductivity test board in free air at TA=25°C. Note 3: Devices are ESD sensitive. Handing precaution recommended. Note 4: The device is not guaranteed to function outside its operating conditions. BLOCK DIAGRAM Publication Order Number: [BW7383] © Bruckewell Technology Corporation Rev. A -2014 BW7383 6 Pin Non-isolation Buck current control IC with High PFC for LED Lighting ELECTRICAL CHARACTERISTICS VCC=15V, TA= 25°C, unless otherwise specified. Parameter Symbol Conditions Min Typ. Max. Units Turn-on voltage VCC_ON 17.4 18.4 19.4 V Turn-off voltage VCC_OFF 9.3 9.8 10.3 V Quiescent current 1 IQ1 Vcc=17V, at Vcc_off 30 50 uA Quiescent current 2 IQ2 Start up at 4.5 KHz 600 800 uA Operation supply current ICC 2.5 3.0 mA Min Typ. Max. Units PROTECTION Parameter Symbol VCC voltage protection VOVPA 31.2 32.8 34.5 V Output voltage protection VOVPS 9.8 10.5 11.2 V CS limit voltage VOCP 1.15 1.25 13.35 V Short circuit protection(Note 5) VO_STR Conditions V GM AMPLIFIER Parameter Symbol Reference voltage VREF Transconductance GM 108 uA/V Source current ICOMP_SOU 20 uA OSCILLATOR Parameter Symbol Start Frequency TSTR DRIVER Parameter Conditions Conditions Min Typ. Max. Units 195 200 205 mV Min Typ. Max. 220 Conditions VOH Min us Typ. Max. Units VCC=33V, IO = 10mA 1.2 1.5 V VOL VCC=33V, IO = -10mA 0.12 V Rising time TRISE VCC=20V, CO =1nF 40 ns Falling time TFAIL VCC=20V, CO =1nF 80 ns Output clamp voltage VO_CLAMP Leading edge blanking time LEBT OTP(Note 6) Parameter Symbol Dropout voltage Symbol Units 19 0.5 Conditions Min Typ. V ns Max. Units OTP Trip Point 150 °C OTP Release Point 115 °C OTP Threshold Hysteresis 35 °C Publication Order Number: [BW7383] © Bruckewell Technology Corporation Rev. A -2014 BW7383 6 Pin Non-isolation Buck current control IC with High PFC for LED Lighting APPLICATION INFORMATION 2-6. DMG 1. Function Description The DMG pin can sense output information to depart from start The BW7383 is a constant current Buck controller with PFC up voltage(VO_STR) and protection voltage(VOVPS). Besides, function for LED lighting applications. the Internal resistance of DMG pin is 1.6Mohm. The controller is BCM operation with constant on time based When DMG sense voltage under VO_STR, the circuit will work regulator design to achieve high power factor performance. on short circuit protection,and the system switching frequency The BW7383 is built-in functions of VCC over voltage protection, FSTR=1/Tstr. open LED protection, short LED protection, over temperature When DMG sense voltage over VOVPS, the circuit will work on protection, primary side current limit, and gate clamp within. over voltage protection, it will latch out off until VCC under The BW7383 sense output current from CS pin to get the output VCC_OFF. current information. By the system close loop feedback. The avarge output current can express as below. IOUT = 0.2 / Rs 2. Pin Detail 2-1. COM This is the output of the Gm amplifier. Connect with a suitable RC network to ground. 2-2. GND GND is the reference node of internal circuit. 2-3. CS MOSFET current signal sensing for LED constant current control and current limit setting function 2-4. OUT Gate drive for external MOSFET switch and is built-in Gate clamp function. 2-5. VCC Power supply for the controller during normal operation. The controller will start up when VCC reaches 18.4V (typical) and will shut-down when VCC voltage is below 9.8V (typical). A decoupling capacitor should be connected between the VCC and GND pin as close as possible. The BW7383 perform VCC over voltage protection though VCC pin. Once VCC pin exceed in 32.8V, BW7383 turns off and latch out the MOSFET switcher until VCC under VCC_OFF. Publication Order Number: [BW7383] © Bruckewell Technology Corporation Rev. A -2014 BW7383 6 Pin Non-isolation Buck current control IC with High PFC for LED Lighting Disclaimer ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE. Bruckewell Technology Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, “Bruckewell”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other disclosure relating to any product. Bruckewell makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or the continuing production of any product. To the maximum extent permitted by applicable law, Bruckewell disclaims (i) Any and all liability arising out of the application or use of any product. (ii) Any and all liability, including without limitation special, consequential or incidental damages. (iii) Any and all implied warranties, including warranties of fitness for particular purpose, non-infringement and merchantability. Statements regarding the suitability of products for certain types of applications are based on Bruckewell’s knowledge of typical requirements that are often placed on Bruckewell products in generic applications. Such statements are not binding statements about the suitability of products for a particular application. It is the customer’s responsibility to validate that a particular product with the properties described in the product specification is suitable for use in a particular application. Parameters provided in datasheets and/or specifications may vary in different applications and performance may vary over time. Product specifications do not expand or otherwise modify Bruckewell’s terms and conditions of purchase, including but not limited to the warranty expressed therei Publication Order Number: [BW7383] © Bruckewell Technology Corporation Rev. A -2014