STEVAL-LLL009V1 Data brief 300 W very high AC input voltage LED driver with digital power control Features System architecture based on transition mode boost PFC, half bridge LCC and synchronous rectification (full bridge) 270-480 V input voltage range AC Output can be configured in constant current (CC) or constant voltage (CV) mode: 300 W maximum O/P power rating CV mode: 48.5 V 1% CC mode: 6.25 A 2.5% with voltage drop from 36 to 48 V Peak efficiency >93.5% Product summary Power Factor > 0.9 for load > 33% of max. load of the input voltage range 300 W output digitally STEVAL- THD < 20% for load > 25% of max. load of the input voltage range controlled HV AC LLL009V1 Input HB LED driver Dimming control in CC mode configuration: Firmware for STEVAL- 0-10 V control STSW- LLL009V1 based on 1% resolution LLL009FW STM32F334R8 MCU analog dimming Mainstream mixed Soft start signal MCU ARM STM32F334R8 Cortex-M4 core with Protections: I/P and O/P under and overvoltage protection, O/P open/no load DSP and FPU circuit protection, O/P short/overload circuit protection Digitally controlled by STM32F334R8 Galvanically isolated 4 A half-bridge dual STGAP2D RoHS compliant channel gate driver WEEE compliant (2012/19/UE RAEE II) N-channel 950 V, 0.275 Ohm typ., 17.5 A MDmesh DK5 STW20N95DK5 Description Power MOSFET in The STEVAL-LLL009V1 digitally controlled 300 W power supply consists of power TO-247 package factor correction (PFC) and half-bridge LCC resonant converter power stages. N-channel 950 V, An STM32F334R8 microcontroller implements DC-DC and output synchronous 0.275 Ohm typ., 17.5 STW20N95K5 rectification digital control, while the PFC is driven in transition mode by the L6562AT A MDmesh K5 Power controller. The system supports constant voltage (CV) and constant current (CC) MOSFET operation. N-channel 100 V, MDmesh K5 and MDmesh DK5 Power MOSFETs are used in the PFC and LCC 0.0068 Ohm typ., 80 STP100N10F7 A STripFET F7 half-bridge, respectively, to ensure maximum efficiency, while the STripFET F7 Power Power MOSFET in MOSFET is employed to reduce conduction losses in the synchronous rectification TO-220 package stage on the secondary side. Both the primary and secondary sections are supplied by an off-line flyback LED Lighting and Applications circuit based on VIPER267KDTR high voltage converter for ultra-wide input which Controls provides regulated voltages to the control board, the gate driver ICs and the signal conditioning circuits. Formal testing and measurement results confirm the ability and performance of ST power products combined with comprehensive digital control to deliver high efficiency, power factor near unity, and low THD across wide input voltage and load conditions. DB4318 - Rev 1 - November 2020 www.st.com For further information contact your local STMicroelectronics sales office.STEVAL-LLL009V1 Block diagram 1 Block diagram Figure 1. STEVAL-LLL009V1 functional block diagram ISOLATION 750 2.5% DC-BUS O/P Bridge Sync. Filter PFC HB-LCC Rectifier Rect. 275 480V AC Mains STW20N95DK5 L6562AT STP100N10F7 STW20N95K5 L6491 Gate Driver Output Operation Mode: CV (SW1: 1-2) CC (SW1: 2-3) Auxiliary GATE STGAP2D CONTROL DRIVE Gate Driver VIPer26K Supply LOGIC Flyback ISOLATION MCU 0-10V Optically Isolated STM32F334 DC-BUS Sense DB4318 - Rev 1 page 3/13