STEVAL-ISA071V1 STMicroelectronics

STEVAL-ISA071V1 4 W non-isolated, wide input-voltage range SMPS demonstration board based on the VIPER16 Data brief Features Input: V : 85 - 264 V IN rms f: 45 - 66 Hz Output: 12 V 10% (referred to -5 V), 160 mA DC -5 V 4%, 400 mA DC Maximum output power: 4 W (for EU range up to 6 W) Standby: 70 mW at 230 VAC Short-circuit protected Isolation: non-isolated N connected to output STEVAL-ISA071V1 GND EMI: in accordance with EN55022 class B RoHS compliant Description The STEVAL-ISA071V1 switched-mode power supply (SMPS) demonstration board is dedicated to mains applications requiring -5 V and +7 V referred to neutral. The non-isolated SMPS is capable of delivering 4 W of output power over a wide input voltage range. This capability can also be applied to higher power outputs or different voltage ranges. The SMPS generates 5 V and 12 V. The 5 V can be used to supply the MCU, directly driving a Triac connected to neutral, and the 12 V can be used to supply additional circuits, such as relays, OAs, etc. June 2010 Doc ID 17294 Rev 2 1/4 For further information contact your local STMicroelectronics sales office. www.st.com 4 Obsolete Product(s) - Obsolete Product(s) Schematic diagram STEVAL-ISA071V1 1 Schematic diagram Figure 1. STEVAL-ISA071V1 circuit schematic * 6 , 03 43 2 M ( U & 6 2 7 . 6 2 , & 6 T/UT PU U& 6 6 K 2 ( , 4 U & 6 5 , 2 6 6 A A K NI IN -0 - U& 6 3 * 2 2 . 2 K N - V 2/4 Doc ID 17294 Rev 2 Obsolete Product(s) - Obsolete Product(s) / ,) R R N K 6 6I R PE 34 %& U& 4 N K 34 03 ( .