MIE1W0505BGY - 1W Isolated DC/DC Module, 5V Out | MPS
Teilenummer: MIE1W0505BGY ✓ Aktiv| Menge | Stückpreis | Gesamt |
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MIE1W0505BGY Übersicht
An isolated DC/DC converter is a power module that transfers energy across a galvanic isolation barrier, keeping the secondary-side ground independent of the primary-side ground. Isolated converters sit within the power management IC hierarchy: power module -> isolated DC/DC converter -> switching regulator -> power supply. They are essential wherever ground loops, different voltage domains, or safety isolation are required, such as isolated communication interfaces, industrial sensor nodes, and gate-drive bias supplies.
The MIE1W0505BGY stands out for its use of capacitive isolation technology for the feedback (FB) path, which regulates the output voltage without a traditional optocoupler or a precision-configurable reference IC. Eliminating the optocoupler reduces component count, improves long-term reliability (optocoupler CTR degrades over time), and enables a much smaller solution size than conventional 1W isolated modules. The module provides excellent load and line regulation across its full 3V-5.5V input range.
Architecturally, the module integrates the power transformer, controller, synchronous rectification, and the capacitive FB isolator inside the SOIC-16WB molded body, presenting a single component that replaces a multi-component flyback design. Continuous short-circuit protection (SCP) and over-temperature protection (OTP), cited for the -5R-AEC1 family variant, safeguard the module against output faults and thermal stress.
Typical applications include isolated RS-485/CAN transceiver bias supplies, isolated side-rails for gate drivers, industrial PLC I/O channel isolation, and 3.3V/5V logic-domain isolation in test equipment and battery-powered instruments.
Design-wise, the wide 3V-5.5V input range lets a single module serve both 3.3V and 5V logic rails; verify that available input current margin covers the roughly 300mA-plus primary-side demand at 3.3V input for a full 200mA load.
This page synthesizes distributor sourcing data, drop-in family alternatives, and practical design notes not found in the manufacturer product page.
Drop-in-Alternativen für MIE1W0505BGY – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
MIE1W0505BGY-3R
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
MIE1W0505BGY-5R-AEC1
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
MIE1W0505BGLVH-3R-Z
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
MIE1W0505BGLVH-3R-P
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
MIE1W0505BGY Grenzwerte & elektrische Eigenschaften
| Product Type | Isolated regulated DC/DC power module |
| Eingangsspannungsbereich | 3 V to 5.5 V |
| Ausgangsspannung | 5 V |
| Output Current | 200 mA |
| Maximum Output Power | 1 W |
| Isolation Technology | Capacitive isolation (feedback path, no optocoupler) |
| Regulation | Excellent load and line regulation |
| Protection Features | Continuous short-circuit protection (SCP), over-temperature protection (OTP) |
| Gehäuse | SOIC-16 wide body (WB) |
| Montageart | Surface Mount |
| Pin-Anzahl | 16 |
| RoHS-Status | Compliant (per distributor listings for family variants) |
| Automotive Qualification | AEC-Q100 qualified (-5R-AEC1 family variant) |
MIE1W0505BGY soic-16 wide body (wb) Pinbelegungsleitfaden
Pinbelegung für MIE1W0505BGY (soic-16 wide body (wb)-Gehäuse). Dieses Leistungsbauteil verfügt über Gate-, Drain- und Source-Anschlüsse. Bei nicht gepolten Gehäusen entnehmen Sie die genaue Ausrichtung von Pin 1 und Footprint-Details dem Herstellerdatenblatt. Typische Anwendungen sind Netzteilentwurf, Motoransteuerung und Lastschaltung.
Keine detaillierten Pinbelegungsdaten verfügbar für MIE1W0505BGY.
Siehe die Datenblatt für die vollständige Pin-Konfiguration.
Typische Anwendungen
MIE1W0505BGY ist geeignet für 6 Anwendungs: Isolated RS-485 / CAN Transceiver Bias Supply, Isolated IGBT / SiC Gate-Driver Bias Rail, Industrial PLC / DCS I/O Channel Isolation, Medical and Test Equipment Signal-Chain Isolation, Battery-Powered Portable Instrument Isolated Ports, Isolated Bias for Microcontroller and Communication Modules.
Isolated RS-485 / CAN Transceiver Bias Supply
The MIE1W0505BGY is a strong fit for powering the isolated side of RS-485 and CAN transceivers because it delivers a regulated 5V rail at up to 200mA (1W) from a 3V to 5.5V input, covering the typical 20-60mA demand of an isolated transceiver plus margin for bus termination and supervisory circuitry. Its capacitive-isolation feedback regulates the output without an optocoupler, keeping the isolated ground domain quiet and avoiding the CTR drift that plagues optocoupler designs over automotive or industrial lifetimes. Placed directly between the logic-side rail and the transceiver VISO pin with 10uF output ceramic capacitance, the module provides excellent load and line regulation across transceiver idle-to-dominant load steps. The wide 3V-5.5V input range lets the same footprint serve both 3.3V and 5V controllers without redesign, and family variants add SCP/OTP for fault-tolerant field deployments.
Empfohlen
Isolated IGBT / SiC Gate-Driver Bias Rail
Gate drivers for IGBT and SiC switches need a small, stable, isolated bias rail referenced to the switching source potential, and the MIE1W0505BGY fits this role with its 5V/200mA regulated output and compact SOIC-16 wide body footprint. Although 5V alone is often boosted or shifted for gate drive thresholds, the module can supply the isolated-side logic, level-shifter, and supervisory circuits, or feed a secondary charge pump to build +15V/-8V rails. Because the feedback path uses capacitive isolation rather than an optocoupler, the isolation barrier's age-related degradation is eliminated - an important reliability factor in power converters where the bias module sits at high dV/dt potential. Continuous short-circuit and over-temperature protection in the -5R-AEC1 variant guards against gate-drive faults, and the 3V-5.5V input accepts the controller-side supply directly.
Empfohlen
Industrial PLC / DCS I/O Channel Isolation
In programmable logic controllers and distributed control systems, each I/O channel often requires an isolated field-side supply to withstand ground potential differences and inject common-mode noise. The MIE1W0505BGY provides one regulated 5V, 200mA isolated rail per module, so a multi-channel card simply populates one SOIC-16WB module per channel - no transformer design, no optocoupler aging analysis, and no compensation tuning. Excellent load and line regulation keeps field-side ADCs, signal conditioners, and microcontrollers stable as channel loads switch, while the 3V-5.5V input range tolerates the backplane supply tolerance. For automotive-origin industrial equipment, the AEC-Q100 qualified MIE1W0505BGY-5R-AEC1 drop-in variant adds SCP and OTP protection. The tiny footprint relative to a discrete flyback lets designers increase channel density on the same PCB area, directly reducing per-channel isolation cost.
Empfohlen
Medical and Test Equipment Signal-Chain Isolation
Bench instruments, patient-adjacent equipment, and data-acquisition front ends frequently need a small isolated supply to float an analog front end or a communication port away from earth ground. The MIE1W0505BGY's 1W, 5V regulated output powers isolated ADCs, isolation amplifiers, and isolated digital interfaces such as USB or SPI isolators drawing up to a few tens of milliamps each. Its capacitive-isolation feedback eliminates optocoupler noise injection and aging, supporting the long calibration cycles typical of test equipment. Because the entire module fits a SOIC-16 wide body outline, it can be placed immediately adjacent to the isolation barrier on a two-channel card layout, minimizing isolated-rail routing. Designers should budget input current headroom at 3.3V input (roughly 350mA-plus at full load due to conversion losses) and confirm the module's isolation rating against the equipment's safety specification in the MPS datasheet.
Empfohlen
Battery-Powered Portable Instrument Isolated Ports
Portable instruments running from single-cell lithium or multi-cell alkaline stacks benefit from the MIE1W0505BGY's wide 3V-5.5V input range, which directly accepts a depleted-to-full battery rail without a pre-regulator. The module's regulated 5V/200mA output then powers an isolated external probe interface, isolated programming port, or galvanically isolated sensor pod. The single-component SOIC-16WB solution keeps board area and height small - critical for handheld enclosures - and the absence of an optocoupler removes a component whose performance drifts with temperature and age, improving measurement repeatability. Quiescent and no-load behavior should be verified in the MPS datasheet for battery-standby budgets; for duty-cycled systems, the enable behavior of the family variants can gate the module. Over-temperature and short-circuit protection variants add robustness for field-deployed probes and leads.
Empfohlen
Isolated Bias for Microcontroller and Communication Modules
Mixed-voltage embedded systems often need a small isolated rail to power a secondary microcontroller, wireless module, or fieldbus node on the far side of an isolation barrier. The MIE1W0505BGY supplies a regulated 5V at 200mA - sufficient for low-power MCUs, isolated CAN/RS-485 PHYs, and RF front ends - directly from a 3.3V or 5V controller rail. Using one SOIC-16WB module instead of a discrete flyback shortens design cycles dramatically because transformer selection, loop compensation, and optocoupler biasing are all internal. Excellent load and line regulation keeps RF and MCU rails within tolerance across transmit-burst load transients, and capacitive feedback coupling avoids the capacitance and aging issues of optocoupler schemes. Family variants with SCP and OTP protect against accidental shorts during board bring-up, and the shared footprint enables reuse across automotive (AEC-Q100 -5R-AEC1) and industrial builds.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für MIE1W0505BGY – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | MIE1W0505BGY-3R | MIE1W0505BGY-5R-AEC1 | MIE1W0505BGLVH-3R-Z |
|---|---|---|---|---|
| Package | SOIC-16 wide body (WB) | SOIC-16WB - same | SOIC-16WB - same | SOIC-16WB (LVH outline variant) |
| Brand | Monolithic Power Systems | Monolithic Power Systems | Monolithic Power Systems | Monolithic Power Systems |
| Input Voltage Range | 3 V to 5.5 V | 3 V to 5.5 V | 3 V to 5.5 V | 3 V to 5.5 V |
| Output Power | 1 W | 1 W | 1 W | 1 W |
| Output Voltage / Current | 5 V / 200 mA | 5 V / 200 mA | 5 V / 200 mA | 5 V / 200 mA |
| Feedback Isolation | Capacitive (no optocoupler) | Capacitive (no optocoupler) | Capacitive (no optocoupler) | Capacitive (no optocoupler) |
Wichtigste Unterscheidungsmerkmale
- Optocoupler-free capacitive isolation feedback (vs. Traditional optocoupler flyback modules)
- Automotive-grade drop-in variant available (vs. MIE1W0505BGY-3R (standard grade))
- Wide 3V-5.5V input spans both logic rails (vs. Fixed-input isolated modules)
Designhinweise
Budget primary-side current carefully at low input voltage. Delivering a full 1W output (5V at 200mA) from a 3.3V input requires roughly 350mA or more of input current once conversion losses are included, so the logic-side rail must supply well beyond 200mA. At a 5V input the primary current demand drops proportionally. Verify the exact efficiency and input current figures in the MPS datasheet before finalizing the upstream rail rating, and include margin for inrush during module startup and for SCP fault conditions.
Place input and output ceramic decoupling capacitors as close to the module pins as possible - typically 10uF on the input and 10uF on the output per the manufacturer's typical application circuit. Route the isolated-side ground as its own quiet domain, and keep the isolation gap on the PCB matched to the creepage and clearance requirements of your end-equipment safety standard; the module only provides the component-level barrier. Avoid routing high-dV/dt signals under the SOIC-16WB body to prevent capacitive coupling across the internal isolation barrier.
Do not assume all family suffixes are mechanically identical. The base MIE1W0505BGY, the -5R-AEC1 automotive variant, and the MIE1W0505BGLVH series share the same electrical ratings (3V-5.5V in, 5V/200mA out) but the LVH series is described by Mouser as a next-generation ultra-small package - confirm the molded-body dimensions and footprint before substituting. Also, the standard MIE1W0505BGY is not AEC-Q100 qualified; specify the MIE1W0505BGY-5R-AEC1 for automotive designs requiring that qualification and its SCP/OTP protection.
Compliance-Informationen
Distributor listings (JLCPCB) mark the family as ROHS compliant. The MIE1W0505BGY-5R-AEC1 family variant is AEC-Q100 qualified per MPS; the base MIE1W0505BGY is not advertised as automotive qualified. REACH, lead-free, halogen-free, and conflict-minerals statuses were not stated in the verified data.
