| Topology | Buck Converter |
| Input voltage | 24 V |
| Switching frequency | 1100-2100 kHz |
| Output 1 | 3.3 V |
| IC revision | E1 |
This reference design showcases non-isolated power supply architectures for protection relays with analog input/output and communication modules generated from 5-, 12-, or 24-V DC input. To generate the power supplies the design uses DC/DC converters with an integrated FET, a power module with an integrated inductor for size- and design-time-constrained applications, a HotRod™ package type for applications requiring low EMI and linear regulators (LDOs) for low ripple. Protections include a flat clamp TVS for input transient protection, an eFuse with configurable load current for overload protection and an ideal diode controller for input reversal protection. Additional features include an auto-switching power MUX, an analog temperature sensor, an input OK indication, a “no load” detection and a voltage supervisor.
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(µH) | IR(A) | ISAT(A) | RDC max.(Ω) | fres(MHz) | Type | Version | Pins | Mount | L(mm) | H(mm) | Working Voltage(V (AC)) | Operating Temperature | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
![]() | WE-SPC SMT Power Inductor, 15 µH, 1.4 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-SPC SMT Power Inductor | Inductance15 µH | Rated Current1.4 A | Saturation Current1.7 A | DC Resistance0.136 Ω | Self Resonant Frequency22 MHz | – | VersionSMT | Pins2 | MountSMT | Length4.8 mm | Height3.8 mm | – | Operating Temperature -40 °C up to +125 °C | ||||
![]() | WR-PHD Pin Header - Single, –, 3 A | Simulation– | Downloads7 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header - Single | – | Rated Current3 A | – | – | – | TypeAngled | – | Pins4 | MountTHT | Length10.16 mm | – | Working Voltage250 V (AC) | Operating Temperature -40 °C up to +105 °C |