S T E VA L - I S A 11 4 V 1 5 V, 160 mA non-isolated buck converter using VIPer Plus - VIPER06XS Data brief Description The STEVAL-ISA114V1 evaluation board describes a 5 V- 0.15 A power supply set in buck topology with the VIPer06XS, a new off-line high voltage converter by STMicroelectronics, specifically developed for non-isolated SMPS. The features of the device include an 800 V avalanche rugged power section, PWM operation at 30 kHz with frequency jittering for lower EMI, limiting current with adjustable set point, on- board soft-start, safe auto-restart after a fault condition and low standby power consumption. The available protection includes a thermal shutdown with hysteresis, delayed overload protection and open loop failure protection. All Features protection is auto-restart mode. Universal input mains range: input voltage: 90 - 264 VAC frequency: 45 - 65 Hz Single-output voltage: 5 V 0.16 A continuous operation Fully protected against faults (overload, feedback disconnection and overheating) EMI: according to EN55022-Class-B RoHS compliant September 2016 DocID025045 Rev 2 1/8 www.st.com For further information contact your local STMicroelectronics sales office Adapter features STEVAL-ISA114V1 1 Adapter features The electrical specifications are given in Table 1:Electrical specification, the schematic in Figure 1:Circuit schemati, and the bill of material in Table 2:Bill of materia. Table 1: Electrical specifications Parameter Symbol Value Input voltage range V 80 V 265 V IN AC AC Output voltage V 5 V OUT Max. output current I 0.16 A OUT Precision of output regulation VOUT LF 5% High frequency output voltage ripple VOUT HF 50 mV Max. ambient operating temperature TAMB 60 C Table 2: Bill of material Name Value Description Footprint Manufacturer C1 2.2 F, 400 V Electrolytic capacitor Saxon C2 2.2 F, 400 V Electrolytic capacitor Saxon C3 2.2 F, 25 V Ceramic capacitor SMD: 0805 Murata CFB Not mounted Ceramic capacitor SMD: 0805 Cf 100 nF, 50 V Ceramic capacitor SMD: 0805 Murata Cc Not mounted Ceramic capacitor SMD: 0805 C7 22 nF, 25 V Ceramic capacitor SMD: 0805 Murata C8 100 nF, 50 V Ceramic capacitor SMD: 0805 Murata C9 100 F, 25 V Electrolytic capacitor Rubycon, ZL series D1 1N4007 High voltage rectifier DO-41 Fairchild D3 STTH1L06 High voltage ultra fast rectifier SMB (SOD87) ST D4 STTH1L06 High voltage ultra fast rectifier SMB (SOD87) ST Daux Not mounted Small signal diode IC VIPER06XS High voltage converter SSO-10 ST L1 1 mH Input filter inductor SMD Epcos L2 RFB0810-681 0.68 mH power inductor Coilcraft R1 22 ohm 1 W resistor Panasonic R3 1 kohm, 1% 1/4 W resistor SMD: 0805 Panasonic R4a 1.5 kohm, 1% 1/4 W resistor SMD: 0805 Panasonic R4b 22 kohm 1/4 W resistor SMD: 0805 R5a 15 kohm 1/4 W resistor SMD: 0805 R5b 0 ohm, 1% 1/4 W resistor SMD: 0805 Panasonic 2/8 DocID025045 Rev 2