STEVAL-ILL070V4 STMicroelectronics

STEVAL-ILL070V4 35 W dimmable single string LED driver using HVLED001A and STF10LN80K5 Data brief Description The STEVAL-ILL070V4 is intended to drive one LED string with a maximum output current of 700 mA. The LED current can be finely adjusted using either a 0 - 10 V interface or a PWM signal (for example, provided by a microcontroller) on the SELV portion of the board. The universal input capability makes this board suitable in worldwide designs. On the secondary side, the board includes a connector to plug an auxiliary linear on the switching voltage regulator side to supply small circuits (e.g., IoT wireless expansions like BLE, Spirit or WiFi modules). The schematic for a simple linear regulator to supply 5 V or 3.3 V is Features also provided. Input voltage: V = 90 - 305 V , IN rms f: 45 - 66 Hz A very high power factor and efficiency are Output current: 700 mA obtained even at light loads. Input voltage (V = 24 V to 48 V) LED variations, excessive input voltage (overvoltage Dimming: 100% to 10% like surges or bursts) and very low input voltages are managed by the HVLED001A protections, Dimming interfaces: 0 - 10 V and PWM input improving the reliability of the application. High power factor, low THD Efficiency: > 90% full load The output capacitor is automatically discharged Open load voltage limiting (52.4 V) at turn-off to prevent any harm from contact with Optional remote turn-off input output connector. Optional 3.3 V 0.1 A voltage regulator Output open circuit and overload protections Fast VOUT discharge include auto restart for safe operation in lighting RoHS compliant environments. October 2017 DocID030994 Rev 1 1/7 www.st.com For further information contact your local STMicroelectronics sales office Board description STEVAL-ILL070V4 1 Board description Figure 1: Jumper and connector locations LED Cathode LEDAnode GND GND Reg out* Switch off* Reg in* PWMDim GND AC 0-10 Interface Mains VAUX PWM input GND Table 1: Description of the jumper and connector signals Signal Con Pin Dir Description and use name LED 1 Output Connect to the cathode of the LED string Cathode J1 LED 2 Output Connect to the anode of the LED string Anode 1 AC mains Input First connection to AC Mains Warning high voltage J2 2 AC mains Input First connection to AC Mains Warning high voltage Regulated 12 V signal with 2mA capability suitable to supply a 1 AUX Output variable resistor to drive 0 - 10 V interface A voltage between this pin and GND sets the level of output J3 0-10 2 Input current: 10 V sets the maximum I while any voltage between OUT Interface 1 V and 0 V sets the minimum current 3 GND Ground Secondary side signal reference voltage 1 GND Ground Secondary side signal reference voltage A PWM signal applied to this terminal sets an output current proportional to signals duty cycle. The recommended PWM J4 PWM signal amplitude is between 3.3 V and 5 V. The recommended 2 Input Input PWM signal frequency is between 200 Hz (especially when U6 is used, see Figure 3 for reference) and 1 kHz (especially when original configuration is used). 1 GND Ground Secondary side signal reference voltage J6 2 GND Ground Secondary side signal reference voltage 3 Reg out Input Output of the optional external Voltage regulator (not provided) 2/7 DocID030994 Rev 1