BM61M41RFV-CE2 - 3750Vrms Isolated Gate Driver, 65ns, 4A | ROHM
Teilenummer: BM61M41RFV-CE2 ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $4.85 | $4,85 |
| 10 | $4.36 | $43,60 |
| 100 | $3.88 | $388,00 |
| 500 | $3.49 | $1.745,00 |
| 1.000 | $3.1 | $3.100,00 |
BM61M41RFV-CE2 Übersicht
An isolated gate driver is a power-management IC that transmits a PWM or on/off control signal across a safety-grade isolation barrier while providing the high peak currents needed to rapidly charge and discharge the gate capacitance of a power MOSFET, IGBT, or SiC FET. Within the broader hierarchy, the BM61M41RFV-CE2 sits at: isolated gate driver -> gate driver -> power management IC -> semiconductor. Galvanic isolation is mandatory in motor drives, solar inverters, and industrial bus converters where the control side (ground-referenced, user-accessible) must remain safely separated from the high-voltage switching node referenced to a DC-link that may exceed 600 V or 1200 V.
Key features include a minimum input pulse width of 60 ns (well below the pulse widths used in standard PWM schemes), an input-side supply range of 4.5 V to 5.5 V that interfaces directly to 5 V logic or 3.3 V microcontrollers through level shifting, and an output-side supply range of 9 V to 24 V supporting standard MOSFET (10-12 V), IGBT (15 V) and SiC (18-20 V) gate-drive requirements. The device provides a single driver channel and is rated for operation from -40 °C to +125 °C.
Architecturally, the BM61M41RFV-CE2 integrates an on-chip micro-transformer that couples the input signal across the isolation barrier using high-frequency magnetic pulses, then reconstructs it on the secondary side to drive an output stage capable of sourcing and sinking the gate charge of mid-power switches. Compared with opto-coupler-based gate drivers, the magnetic-coupling approach avoids the slow propagation, LED-aging, and CTR-degradation issues that affect long-term reliability in high-temperature environments.
Typical applications include driving low-side MOSFETs in half-bridge configurations (per the BM61M41RFV-EVK001/BM61M41RFV-EVK002 evaluation boards), IGBT gate drive in motor-control inverters, SiC FET drive in EV onboard chargers and DC-DC converters, isolated drive for solar micro-inverters, and digital isolator replacement where a small gate-driver coil offers PCB-area savings.
When designing with this part, observe the input-side and output-side decoupling guidance from the ROHM datasheet - typically 1 µF to 10 µF low-ESR ceramics placed within 2 mm of each supply pin - and confirm that the bootstrap or isolated supply rail can deliver the peak 4 A during MOSFET Miller plateau transitions. For half-bridge or high-side drive, pair the BM61M41RFV-CE2 with a dedicated high-side/level-shift solution from the BM61 family such as the BM61S41RFV-CE2.
This page synthesizes distributor pricing, drop-in alternatives within the BM61 family, and practical PCB layout notes not consolidated in the manufacturer datasheet alone.
Drop-in-Alternativen für BM61M41RFV-CE2 – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
BM61S41RFV-CE2
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
BM61S40RFV-CE2
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
BM61M41RFV-CE2 Grenzwerte & elektrische Eigenschaften
| Funktion | Isolated single-channel gate driver |
| Isolation Technology | Magnetic coupling (galvanic isolation) |
| Isolation Voltage | 3750 Vrms |
| Number of Channels | 1 |
| I/O Delay Time (Propagation Delay) | 65 ns |
| Minimum Input Pulse Width | 60 ns |
| Peak Output Current | 4 A |
| Input-Side Supply Voltage (VDD1) | 4.5 V to 5.5 V |
| Output-Side Supply Voltage (VDD2) | 9 V to 24 V |
| Betriebstemperaturbereich | -40 °C to +125 °C |
| Gehäuse | 10-SSOP-BW |
| Montageart | Surface Mount |
| Output-Side UVLO | Per datasheet (input-side only on the -M variant) |
| RoHS-Status | Compliant |
BM61M41RFV-CE2 Pin-Konfiguration
| Pin 1 | VDD1 — Input-side supply (4.5 V to 5.5 V) |
| Pin 2 | GND1 — Input-side ground |
| Pin 3 | IN+ — Non-inverting logic input |
| Pin 4 | IN- — Inverting logic input |
| Pin 5 | NC — Not connected (per datasheet) |
| Pin 6 | VDD2 — Output-side supply (9 V to 24 V) |
| Pin 7 | GND2 — Output-side ground |
| Pin 8 | OUT — Gate-driver output |
| Pin 9 | NC — Not connected (per datasheet) |
| Pin 10 | EP — Exposed pad (GND2 thermal pad) |
Typische Anwendungen
BM61M41RFV-CE2 ist geeignet für 6 Anwendungs: Half-Bridge MOSFET Gate Drive, IGBT Gate Drive in Motor Control Inverters, SiC FET Drive in EV Onboard Chargers, Isolated Drive for Solar Micro-Inverters, Digital Isolator Replacement in PLC and Industrial Bus Interfaces, Server / Telecom Hot-Swap and ORing FET Drive.
Half-Bridge MOSFET Gate Drive
The BM61M41RFV-CE2 is purpose-built for driving low-side MOSFETs (and, with a high-side companion, half-bridge stages) in compact industrial power converters. The BM61M41RFV-EVK002 reference design demonstrates exactly this use case - input 4.5-5.5 V control logic and 9-24 V output supply driving a half-bridge of two MOSFETs. With 4 A peak output current and 65 ns propagation delay, the part comfortably drives mid-size MOSFETs with Qg up to ~100 nC while keeping switching losses low.
Empfohlen
IGBT Gate Drive in Motor Control Inverters
In variable-frequency motor drives the BM61M41RFV-CE2 provides reinforced 3750 Vrms isolation between low-voltage MCU PWM outputs and the IGBT gate referenced to the high-voltage DC-link. Its 9-24 V output supply supports standard 15 V IGBT gate drive directly, while 4 A peak current rapidly charges IGBT gates for switching frequencies up to several tens of kHz. The magnetic-coupling isolation is unaffected by the high dV/dt of IGBT commutation, eliminating the CM-transient issues seen in opto-coupler drivers.
Empfohlen
SiC FET Drive in EV Onboard Chargers
Although optimized for silicon switches, the BM61M41RFV-CE2 is widely used to drive SiC FETs in EV onboard chargers and DC-DC converters when designers prefer a proven silicon-only gate driver. The 9-24 V output supply covers the 18-20 V typical SiC gate rail, and 3750 Vrms isolation meets automotive high-voltage system requirements. For designs needing active Miller clamping to prevent parasitic turn-on during fast SiC transients, the pin-compatible BM61S41RFV-CE2 is recommended as a drop-in upgrade.
Empfohlen
Isolated Drive for Solar Micro-Inverters
In solar micro-inverter and string-inverter topologies the BM61M41RFV-CE2 replaces opto-coupled gate drive with a smaller, more temperature-stable solution. The 3750 Vrms isolation meets IEC 62109 reinforced-insulation requirements between the user-accessible control side and the DC-link that may exceed 600 V. The 65 ns propagation delay supports high PWM frequencies used to shrink magnetics in micro-inverter designs, while 4 A peak current reliably drives the MOSFET/IGBT switches in the H4 and HERIC topologies common to residential solar.
Empfohlen
Digital Isolator Replacement in PLC and Industrial Bus Interfaces
Where a digital isolator would normally be followed by a separate gate driver, the BM61M41RFV-CE2 combines both functions in a single 10-SSOP-BW part. This shrinks PCB area in PLC analog-input modules and isolated industrial-bus interfaces such as RS-485 or CAN transceivers, where multiple isolated channels are needed. The 60 ns minimum pulse width supports high-speed SPI or UART signaling through the isolation barrier when the device is repurposed as a general-purpose digital isolator.
Empfohlen
Server / Telecom Hot-Swap and ORing FET Drive
In -48 V server and telecom power architectures, the BM61M41RFV-CE2 isolates the low-voltage hot-swap controller from the high-current ORing or hot-swap MOSFET referenced to the negative supply rail. The 3750 Vrms isolation is far above the typical 48-72 V bus requirement, providing substantial safety margin. The 4 A peak current drives large ORing FETs whose Qg can exceed several hundred nC, ensuring fast turn-on/off for minimum body-diode conduction during input-voltage transitions.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für BM61M41RFV-CE2 – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | BM61S41RFV-CE2 | BM61S40RFV-CE2 |
|---|---|---|---|
| Package | 10-SSOP-BW | 10-SSOP-BW - same | 10-SSOP-BW - same |
| Brand | ROHM Semiconductor | ROHM Semiconductor | ROHM Semiconductor |
| Isolation Voltage | 3750 Vrms | 3750 Vrms - same | 3750 Vrms - same |
| I/O Propagation Delay | 65 ns | 65 ns - same | 65 ns - same |
| Peak Output Current | 4 A | 4 A - same | 4 A - same |
| Output-Side Supply (VDD2) | 9 V to 24 V | 9 V to 24 V - same | 9 V to 24 V - same |
Wichtigste Unterscheidungsmerkmale
- Magnetic-coupling isolation with no LED aging (vs. Standard opto-coupler gate drivers)
- Compact 10-SSOP-BW package for tight PCB layouts (vs. Typical SOIC-16 isolated gate drivers)
- Wide 9-24 V output supply supports MOSFET, IGBT and SiC (vs. 12 V or 15 V-only gate drivers)
Designhinweise
Decouple VDD1 (input side, 4.5-5.5 V) and VDD2 (output side, 9-24 V) each with a 1 µF to 10 µF low-ESR ceramic capacitor placed within 2 mm of the respective supply pins. A 100 nF ceramic in parallel helps suppress high-frequency noise from the on-chip micro-transformer. Insufficient decoupling is the most common cause of poor propagation-delay jitter on the BM61M41RFV-CE2.
The 10-SSOP-BW package has a thermal pad (pin 10) tied to GND2 on the output side. Solder this pad to a copper pour of at least 50 mm² on the PCB. In typical gate-drive service the part dissipates only tens of mW, so thermal issues are rare unless VDD2 supply is poorly regulated or the output stage is forced into sustained short-circuit conditions.
Keep the PCB creepage and clearance on the surface between input-side and output-side copper at minimum 4 mm (preferably 6-8 mm) for 3750 Vrms isolation - the on-chip coil is reinforced but PCB-level contamination and humidity can degrade the effective insulation. Avoid running any traces or vias beneath the isolation barrier (between pins 4 and 6). Place the part so that its wide-body SSOP gap is not bridged by solder mask or silkscreen.
Do not parallel multiple BM61M41RFV-CE2 outputs to increase drive current - the internal on-chip transformer timing is not synchronized and paralleled devices can shoot-through. For higher drive current, choose a higher-current part from the same BM61 family or buffer the output with an external gate-drive booster. Estimated: driving a 200 nC Qg MOSFET at 4 A peak yields ~50 ns Miller transition, consistent with the 65 ns propagation-delay budget.
Compliance-Informationen
RoHS and REACH compliance inferred from ROHM product page; AEC-Q100 not stated for this MPN (industrial-targeted).
