STEVAL-LLL008V1 Data brief 100 W high efficiency and low THD dimmable LED driver reference design based on HVLED001B, HVLED002 and SPSGRFC Features Input voltage range 90 265 V AC Dual stage power converter: high power factor PSR-CV and CC step-down Sub-1 Ghz connectivity for 6LoWPAN Mesh network Output voltage range 40 - 70 V, max. current 1.4 A with less then 100 mA current ripple, max. output power 100 W. Peak efficiency overall: Min: above 90% at 90 V , 40 V IN AC OUT DC Max: above 93% at 265 V , 70 V IN AC OUT DC Standby power consumption: 265 VIN AC without control board: less than 0.3 W 265 VIN AC with control board: less than 0.6 W RoHS compliant Description The STEVAL-LLL008V1 reference design is a dual-stage LED driver with high power factor designed for 100 W LED lighting applications using 6LoWPAN Mesh networking. The front-end flyback converter provides high power factor and low THD and implements CV primary side regulation (PSR) with input from an auxiliary winding on the transformer through the ZCD pin on the HVLED001B controller, so no isolated Product summary optocoupler is required. The flyback converter can deliver 105 W with an average 79 V output voltage and 1.8 V maximum ripple. Dual stage LED driver STEVAL- evaluation board with The converter output supplies an inverse buck stage that delivers a regulated 1.4 A LLL008V1 High Power Factor current to the LED driver load. The secondary transformer is also able to supply (a few milliamps via an auxiliary choke) the voltage needed to power up the HVLED002 Firmware for STEVAL- STSW- controller, which manages the inverse buck circuit to provide current limitation for LLL008V1 evaluation LLL008FW dimming and On/Off control. kit The STEVAL-LLL008V1 integrates an STM32L071KZ microcontroller, which is able HPF flyback controller with constant voltage to receive remote on, off and dimming commands via an embedded SPSGRFC sub-1 primary-sensing and HVLED001B GHz transceiver module. The connectivity functionality can be extended to multiple ultra-low standby lighting nodes in a 6LowPAN mesh network. consumption A data concentrator unit (DCU) and mobile Android application have been developed high performance to help you explore the LED lighting reference design further. The DCU consists of a current mode LED HVLED002 NUCLEO-F401RE development platform, plus the X-NUCLEO-IDS01A4 for sub 1- controller GHz communication with the LED driver board and a X-NUCLEO-IDB05A2 board for ultra-low-power ARM Bluetooth communication with a mobile device. STM32L071KZ Cortex-M0+ MCU The ST 6LoWPAN Smart Streetlight mobile application (available on Google Play N-channel 800 V, 0.23 store) collects lighting nodes represented by the microcontroller and RF module on typ., 16 A MDmesh the evaluation board in a 6LoWPAN mesh network. STF23N80K5 K5 Power MOSFET in TO-220FP package N-channel 100 V, 0.062 typ., 4.5 A STripFET F7 Power MOSFET in STL4N10F7 a PowerFLAT 3.3x3.3 package DB4057 - Rev 2 - May 2020 www.st.com For further information contact your local STMicroelectronics sales office.STEVAL-LLL008V1 Product summary sub-1 GHz programmable SPSGRFC transceiver module LED Street Applications Lighting DB4057 - Rev 2 page 2/7