STC04IE170HP STMicroelectronics

STEVAL-IPB001V1 2 W, 3-phase SMPS for breaker applications based on the STC04IE170HP ESBT Data brief Features Active startup network for improved efficiency Input voltage: 150 to 1250 VDC Output voltage: 24 V / 83 mA Output power: 2 W Switching frequency: 30 kHz Dedicated transformer construction Efficiency: > 80% RoHS compliant Description STEVAL-IPB001V1 The design implemented in the STEVAL- IPB001V1 demonstration board represents a complete solution for a 2 W single-output SMPS (switched-mode power supply), which is widely used to supply power in breaker applications. The SMPS employs the UC3845B PWM driver, and uses the STC04IE170HP ESBT as the main switch. This design can also be applied to power supplies for 3-phase power metering applications, as it can be easily upgraded for higher output power. November 2010 Doc ID 18241 Rev 1 1/4 For further information contact your local STMicroelectronics sales office. www.st.com 4 Schematic diagram STEVAL-IPB001V1 1 Schematic diagram Figure 1. STEVAL-IPB001V1 circuit schematic - V 2/4 Doc ID 18241 Rev 1 J1 D1 CON2 4 T1 7 1 2 2 R2 STTH110 C1 3 1 10k 1/4W R1 8 220uF 35V J2 CON3 1M 1/8W 2 C2 D2 D3 R5 10k 1/4W R3 1 33uF450V 5 1 STTH110 R6 C4 D5 1N4148 R4 C3 20V 1M 1/8W 10k 47uF 25V 330uF 25V R8 10k 1/4W R7 R10 C5 1M 1/8W 10k 1/4W 33uF 450V R24 R9 1M 1/8W 10k 1/4W R11 R12 R25 1M 1/8W 1M 1/8W C6 10k 1/4W 3 33uF 450V 2 2 Q2 Q3 1 STP03D200 PN2222A 1 R13 3 680k 1 Q4 C11 R15 3.3k R26 10 R14 C8 100p 100nF 4 STC04IE170HP 18k D4 7 STTH110 U1 C7 2 2 10nF VFB R16 150k R17 22 1 6 COMP 3 OUT 8 VREF R18 2.2k R19 1k 3 SENSE R20 R21 4 C9 RT/CT 3.9k R22 100k 820pF R23 10k C10 6.8 12nF UC3845B 5 VCC GND