EVAL-PSR01B-35W 35 W wide input range flyback converter using HVLED001B quasi resonant flyback controller and STF10LN80K5 Data brief fold-back feature that, contemporarily, reduces the output voltage ripple at light load. Output short-circuit and overload protections are auto-restart for a safe operation in lighting environment. Extremely low input power is there at no load conditions. Features Input voltage: Vin: 90 - 265 Vrms, f: 45-66 Hz Output voltage: 48 V / 730 mA High power factor, low THD No-load: better than 150 mW @ 230 Vin Average full load efficiency: 90% Short-circuit protection with auto restart Safety: Acc. to EN60065 EMI: Acc. to EN55022 - conducted emissions Description The EVAL-PSR01B-35W is intended to provide a stable and insulated 48 V voltage bus suitable to supply secondary side circuitry for a total output power of 35 W when a wide range of input voltages is applied at its input. A very high power factor is obtained thanks to HVLED001B features. Input voltage variations, excessive input voltage (overvoltage like surge or bursts) or very low input voltages are managed by some of the HVLED001B protections, improving the reliability of the application. The efficiency of the application is very high even at very low load thanks to the improved frequency October 2018 DB3733 Rev 1 For further information contact your local STMicroelectronics sales office. 1/5 www.st.com Board description 1 EVAL-PSR01B-35W Board description Figure 1. Jumpers and connectors location EVAL-PSR01B-35W J1 VOUT J2 VAC GND VAC 90Vac to 265Vac 2/5 48V 730mA DB3733 Rev 1 Schematic diagram 2 Schematic diagram EVAL-PSR01B-35W Figure 2. . EVAL-PSR01B-35W - Schematic (* = component not fitted) 2 J2 C4 RV1 S10 K300 TOFF OPTO R16 36k 3 5 R2 10M R7 1k U1 TOFF HVSU C9 100n VCC CS GD ZCD D8 7 9 ZCD CS GD 22uF 50V C13 6 1N4148WS D3 BZX384-C33 HVLED001B OPTO FB C18 3.3nF R9 47k R8 15R D11 VRECT C8 10pF R10 47k D6 C17 220pF R4 360R D4 RS1K 1N4148WS 220R D9 R12 220k R17 0R62 220R R14 R13 C14 220pF Q1 T1 8 5 7 6 D1 R1 680uF 63V C1 C6 STPS4S200S Q1 Heatsink HS1 HEATSINK 21C/W 680uF 63V 1 2 3 4 C7 1 1nF 1kV C12 220pF 1kV STF10LN80K5 R19 0R62 V_OUT C5 D5 R5 1k C2 220nF R6 470k 1 2 J1 VOUT 9RXW 9 ,RXW P$ 3RXW : :#9LQ 1SMA5942BT3G R3 100k C3 D7 2.2nF 400V R11 100k 18.2k R21 D10 1N4148WS R20 18.2k 1N4148WS D2 2KBP08M 3 R15 10k 1k R18 C19 22uF 50V 1N4148WS 3/5 DB3733 Rev 1 L1 1mH L2 2x39mH - 0.8A C10 100nF 310Vac X2 4 3 220nF 310Vac C15 22nF C16 220nF 10 VCC 1 HVSU 1 2 RV2 S10 K300 100nF 310Vac X2 C11 F1 1A VIN BZV55-C16 FB 4 GND 8 1 + - 4 9DF 9DF9DF 1 2 5 Revision history 3 EVAL-PSR01B-35W Revision history Table 1. Document revision history 4/5 Date Revision 24-Oct-2018 1 Changes Initial release DB3733 Rev 1 EVAL-PSR01B-35W IMPORTANT NOTICE - PLEASE READ CAREFULLY STMicroelectronics NV and its subsidiaries ("ST") reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST's terms and conditions of sale in place at the time of order acknowledgement. Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of Purchasers' products. No license, express or implied, to any intellectual property right is granted by ST herein. Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product. ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners. Information in this document supersedes and replaces information previously supplied in any prior versions of this document. (c) 2018 STMicroelectronics - All rights reserved DB3733 Rev 1 5/5 5