| Topology | Flyback Converter |
| Input voltage | 90-440 V |
| Output 1 | 15 V / 0.55 A |
| IC revision | V231 |
The STEVAL-ISA175V1 evaluation board implements a three output isolated flyback specifically designed to supply the STCOMET smart meter and power line communication system.The board is developed using the VIPER26HD offline high-voltage converter by STMicroelectronics. The device features an 800 V avalanche-rugged power section, PWM operation at 115 kHz with frequency jittering for lower EMI, current limiting with adjustable set point, on-board soft-start, safe auto-restart after a fault condition and low standby power.The power supply provides 15 V @ 550 mArms (700 mA peak) to the power line modem (PLM) and the analog circuitry, a post-regulated 5 V @ 100 mA and a 3.3 V @ 200 mA supply through a dedicated DC-DC converter connected on the 15 V rail for digital circuitry and other low voltage parts.Although the power supply is designed to operate over a wide, 90-264 VAC input voltage range, it can also withstand a maximum AC main up to 440 VAC. The board can even operate with incorrect phase-to-phase connection in a three-phase network, though thermal performance would be worse.The board can be used in a stand-alone configuration or with the dedicated STCOMET development kit and the PCB layout is specifically designed to fit inside a real meter
REMARK:~ BOM PDF IS ADDED
Order Code | Datasheet | Simulation | Downloads | Status | Product series | ISAT(A) | fres(MHz) | Size | Version | VIN | VOut1(V) | IOut1(mA) | VOut2(V) | IOut2(mA) | Vaux(V) | fswitch(kHz) | NPRI : NSEC : NAUX | IR(A) | L(µH) | RDC max.(mΩ) | VR(V (AC)) | VT(V (AC)) | Material | L(mm) | W(mm) | H(mm) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
![]() | WE-PD SMT Power Inductor, 0.45 A, 2.3 MHz | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | Saturation Current0.45 A | Self Resonant Frequency2.3 MHz | Size1030 | VersionPerformance | – | – | – | – | – | – | – | – | Rated Current0.3 A | Inductance1000 µH | DC Resistance4600 mΩ | – | – | – | Length10 mm | Width10 mm | Height3 mm | MountSMT | ||||
![]() | WE-TPC SMT Tiny Power Inductor, 0.5 A, 10 MHz | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-TPC SMT Tiny Power Inductor | Saturation Current0.5 A | Self Resonant Frequency10 MHz | Size4828 | VersionSMT | – | – | – | – | – | – | – | – | Rated Current0.75 A | Inductance47 µH | DC Resistance280 mΩ | – | – | – | Length4.8 mm | Width4.8 mm | Height2.8 mm | MountSMT | ||||
![]() | WE-PD SMT Power Inductor, 0.65 A, 3.4 MHz | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | Saturation Current0.65 A | Self Resonant Frequency3.4 MHz | Size1030 | VersionPerformance | – | – | – | – | – | – | – | – | Rated Current0.42 A | Inductance470 µH | DC Resistance2200 mΩ | – | – | – | Length10 mm | Width10 mm | Height3 mm | MountSMT | ||||
![]() | WE-OLSTM Offline Flyback Transformers, 0.82 A, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-OLSTM Offline Flyback Transformers | Saturation Current0.82 A | – | SizeEE16/7/5 | – | Input Voltage 85 - 265 V (AC) | Output Voltage 115 V | Output Current 1700 mA | Output Voltage 26 V | Output Current 2100 mA | Auxiliary Voltage12 V | Switching Frequency 115 | Turns Ratio11.9:1.33:1:2.11 | – | Inductance900 µH | – | – | Insulation Test Voltage1500 V (AC) | – | Length18.5 mm | Width16.5 mm | Height18.8 mm | MountTHT | ||||
![]() | WE-PD4 SMT Power Inductor, 1.5 A, 37 MHz | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD4 SMT Power Inductor | Saturation Current1.5 A | Self Resonant Frequency37 MHz | SizeS | – | – | – | – | – | – | – | – | – | Rated Current1.5 A | Inductance4.7 µH | DC Resistance90 mΩ | – | – | – | Length6.6 mm | Width4.45 mm | Height2.92 mm | MountSMT | |||
![]() | WE-CMB Common Mode Power Line Choke, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CMB Common Mode Power Line Choke | – | – | SizeXS | VersionTHT | – | – | – | – | – | – | – | – | Rated Current0.7 A | Inductance10000 µH | DC Resistance350 mΩ | Rated Voltage250 V (AC) | Insulation Test Voltage1500 V (AC) | MaterialMnZn | Length15 mm | Width7.5 mm | Height18 mm | MountTHT |