STEVAL-ISA184V1 STMicroelectronics

S T E VA L - I S A 1 8 4 V 1 5 V-12 V, 15 W double output isolated flyback converter based on VIPer37LD Data brief Description The STEVAL-ISA184V1 evaluation board implements an isolated flyback double output (5 V / 1.2 A and 12 V / 0.75 A) 15 W wide range mains developed for general purpose applications. The core of the application is the VIPer37LD off- line high voltage converter from the VIPerPlus family. The device is a high-voltage converter that intelligently integrates an 800 V rugged power MOSFET with PWM current-mode control. Features Universal input mains range: 85 265 V The main characteristics of the evaluation board AC frequency: 50 60 Hz are its small size and minimal BOM, high efficiency and low standby consumption. Output voltage 1: 5 V / 1.2 A Extremely low consumption under no-load Output voltage 2: 12 V / 0.75 A conditions is ensured thanks to burst mode Very compact size operation, which reduces the average switching Standby mains consumption: < 40 mW at frequency and minimizes all frequency-related 230 V AC losses. Average efficiency: > 75% EMI: according to EN55022-Class-B The VIPer37LD operates at 60 kHz fixed RoHS compliant frequency, and frequency jittering is implemented to help meet the standards regarding electromagnetic disturbance. The several protections on the device like overvoltage, overload, output short circuit, secondary winding short, hard transformer saturation protection and brown out protections improve the safety and reliability of the design. December 2016 DocID030129 Rev 1 1/4 www.st.com For further information contact your local STMicroelectronics sales office Schematic diagram STEVAL-ISA184V1 1 Schematic diagram Figure 1: STEVAL-ISA184V1 circuit schematic GSPG1907160940SG 2/4 DocID030129 Rev 1 5 T1 D5 12V 12V 0.75A L1 BR RMB6S C16 R18 6 2.2uH C2 270k C8 330pF 4 3 STPS2H100A STTH1L06 R1 330uF 47uF 400V 4 1.8M 5V 3 8 D6 L2 5V 1.2A D1 1 7 2.2uH STPS5H100B R11 C13 C11 C9 C10 C12 4 2 D3 9 1200uF 220uF 2.2nF 220uF 12k 2.2nF BAT46ZFILM D2 CM Choke 2 D4 BAT46ZFILM TRANSFORMER 3 1 R2 C15 Y1 2.2nF 12V C1 100nF 1.8M BAT46ZFILM R5 R4 RV 180k R12 10 1.2k 320V F1 VIPer37L 1.6 A FUSE IC1 4 12V OPTO1 R13 3 VDD DRAIN 470k R7 5 BR 5V SFH6106-2T 330 CONTROL J3 J1 CON2 12Vz C14 3 CONT Dz4 C3 10nF FB GND JUMPER 22nF C5 R16 R14 R15 C4 180k 68k 330k 22nF C7 47uF 50V IC2 22nF C6 3 R3 18Vz R6 22k TS432 Dz2 1.5nF 39k R8 R17 4.7k 22k R9 100 Dz3 1 2 12V 12Vz R10 100 1 2 - + 2 1 1 2 4 2 6 7 8 9 1 10 3 4 2 1 2 1 1 2