STEVAL-ISA183V1 STMicroelectronics

STEVAL-ISA183V1 16 W triple output quasi resonant flyback converter for air conditioning applications using VIPer35LD Data brief Description The STEVAL-ISA183V1 evaluation board implements a 16 W triple output power supply designed in quasi-resonant flyback topology, specifically designed as an auxiliary PSU for air conditioning systems. The core of the application is the VIPER35LD high voltage converter from the VIPerPlus product family which integrates an 800 V rugged power MOSFET with a quasi-resonant PWM current-mode control. The power supply provides an isolated 12 V / 1 A output a two non-isolated outputs, 15 V / 200 mA Features and 5 V / 200 mA respectively. AC main input voltage range : 175 VAC to Other key features include high conversion 275 V AC efficiency, the extremely low consumption at no- Triple output voltages: 12 V - 1 A (isolated), load and at minimum operative output conditions 15 V - 200 mA (non-isolated), 5 V - 200 mA and excellent EMI performance using a low cost (non-isolated), continuous operation input filter. High performance at low load conditions: < 50 mW at no-load condition and < 1.5 W All of these features are concentrated in a small input power at minimum operative output PCB footprint and a minimal bill of materials. power (0.91 W) Efficiency at full load: > 81% EMI: According to EN55022-Class-B, using low cost input filter RoHS compliant May 2017 DocID030510 Rev 1 1/6 www.st.com For further information contact your local STMicroelectronics sales office Schematic diagrams STEVAL-ISA183V1 1 Schematic diagrams Figure 1: STEVAL-ISA183V1 main PSU circuit schematic 2/6 DocID030510 Rev 1 T1 L1 D9 L2 12V-1A 750370702 rev. 6A 470H 3.3H BR STPS5H100B DBLS105G C3 C1 C2 R1 AC IN 1nF 6.8F 6.8F 220k C9 C10 C11 RV 470F 100F 1F 320V D1 F1 NTC AC IN MRA4007T3G 16 2A GND IC2 LDK320AM-R D6 15V-0.2A R8 VOUT VIN 1k STPS1150A R14 C17 ADJ EN 3.3F GND D7 54.9k C15 18V C14 R13 C16 220F IC3 470pF LDK320AM50 R 100nF D8 5V-0.2A 4.75k VIN VOUT STPS1L60 A C20 C19 INHIBIT 100nF 3.3F GND C18 330F D4 D3 BAT41ZFILM BAT41ZF ILM R2 OPTO R3 R5 4.7 SFH6106 -2T R9 115k NC 12k D2 BAT41ZFILM IC1 VIPER35LD R11 130k VDD DRAIN R10 BR 82k CONTROL R6 220 ZCD C6 22F C5 C12 FB GND 220pF 10nF D5 C8 IC2 C4 20V R4 33nF TS432ILT C13 12pF 33k R12 220pF OPTO 15k C7 R7 2.2nF SFH6106-2T C21 47k 2.2nF