STEVAL-ISC001V1 30 W AC-DC adapter based on the L6565 Data Brief Features Input voltage range (VIN) from 88 to 264 VAC Mains frequency (fL) 50 / 60 Hz Maximum output power (POUT 30 W) Output voltage VOUT = 15 V 3% Output current IOUT = from 0 to 2 A VRIPPLE 1 % Minimum switching frequency (@ 100 VDC input voltage) 60 kHz Target efficiency (@ POUT= 30 W, VIN = 88 264 VAC) > 80% Maximum no-load input power < 0.75 W(1) STEVAL-ISC001V1 Description This evaluation board is an AC-DC adapter for consumer equipment, typically implemented as an external unit. For more details see Chapter 1: Characteristics 1. Compliant with European Code of Conduct on Efficiency of External Power Supplies, phase 2, 01.01.2003 December 2007 Rev 1 For further information contact your local STMicroelectronics sales office. 1/5 www.st.com 5 Characteristics 1 STEVAL-ISC001V1 Characteristics As such, it falls within the scope of the European "Code of Conduct on Efficiency of External Power Supplies" and is required to meet efficiency standard under no-load conditions as specified in the following table: Table 1. No-load conditions No-load power consumption Rated input power Phase 1 Phase 2(1) Phase 3 01.01.2001 01.01.2003 01.01.2005 0.3 W and < 15 W 1.0 W 0.75 W 0.30 W 15 W and < 50 W 1.0 W 0.75 W 0.30 W 50 W and < 75 W 1.0 W 0.75 W 0.30 W 1. Compliant with European Code of Conduct on Efficiency of External Power Supplies, phase 2, 01.01.2003 This evaluation board complies with the "Phase 2" requirements. The minimum switching frequency (60 kHz @ VIN = 100 VDC) has been chosen trading off between the transformer size and frequency-related losses. To provide room for the leakage inductance spike, an 800 V MOSFET (STP5NK80ZFP) is used. 2/5 Vin 88V to 264Vac R4 18K R3 1.5M R2 1.5M C8 1nF 3 2 8 C5 100 F 400V C9 2.2nF 1 L6565 IC1 6 D1 1N4148 B1 DF06G R1 100 4 7 5 C7b 100nF R16 220K D2 1N4148 C14 47nF 400V R7 10 R8 47K C7 47 F 25V D6 1N4148 R6 220 C15 100pF 400V R9 1.5 R5 4.7 D5 1N4148 D3 STTH1L06 D4 1.5KE220A 10 R10 1.5 3 4 IC2 TL431 IC3 PC817X1 C6 2.2nF Y1 C10,C11 680 F 25V D7 8 STPS8H100FP Q1 STP5NK80ZFP 5 4 1 3 T1 2 2 1 3 R13 10K R15 5.6K 15V 2A R14 2K C13 560nF D01IN1303B R12 33K R11 1.5K 1 C12 330 F 25V L2 10 H Figure 1. NTC1 10R 2 F1 2A fuse STEVAL-ISC001V1 Board schematic Board schematic Schematic 3/5 Revision history 3 STEVAL-ISC001V1 Revision history Table 2. 4/5 Document revision history Date Revision 18-Dec-2007 1 Changes Initial release. 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