MCP1402T-E/OT vs 1EDI20N12AFXUMA1: Gate Driver Component Comparison
Quick verdict
For conventional low-side MOSFET or IGBT gate drive in compact, cost-sensitive designs with standard isolation requirements, the MCP1402T-E/OT offers a straightforward, efficient solution with strong peak current capability and a tiny SOT-23-5 footprint. For applications demanding galvanic isolation, higher voltage supply rails, and faster switching edges—such as isolated gate drive in half-bridge or multi-level topologies—the Infineon 1EDI20N12AFXUMA1’s magnetic coupling and wider supply voltage range make it the preferable choice.
Spec comparison table
| Spec | MCP1402T-E/OT | 1EDI20N12AFXUMA1 | Notes |
|---|---|---|---|
| Channel type | Single | Single | Equal |
| Current peak output (source/sink) | 500mA / 500mA | Not specified | MCP1402T provides explicit 500mA peak drive current, useful for fast MOSFET switching. |
| Driven configuration | Low-Side | Not specified | MCP1402T explicitly low-side; 1EDI20N12AFXUMA1 can be used for isolated drives (more flexible). |
| Gate type | IGBT, MOSFET (N/P-Channel) | Not specified | MCP1402T supports both MOSFET and IGBT; Infineon data not explicit. |
| Input type | Non-Inverting | Not specified | MCP1402T non-inverting simplifies logic design; 1EDI20N12AFXUMA1 input polarity unknown. |
| Logic voltage (VIL / VIH) | 0.8 V / 2.4 V | Not specified | MCP1402T input thresholds defined; Infineon data unavailable. |
| Mounting type | Surface Mount | Surface Mount | Equal |
| Number of drivers | 1 | 1 | Equal |
| Operating temperature range | -40°C to 150°C (TJ) | -40°C to 150°C (TJ) | Equal |
| Package case | SC-74A (SOT-23-5) | PG-DSO-8-51 (8-SOIC) | MCP1402T smaller footprint (SOT-23-5 vs 8-SOIC); important for dense PCB layouts. |
| Rise/fall time (typical) | 19 ns / 15 ns | 10 ns / 9 ns | 1EDI20N12AFXUMA1 provides faster switching edges, beneficial for high-frequency operation. |
| Voltage supply range | 4.5 V to 18 V | 10 V to 35 V | MCP1402T supports lower supply voltages; 1EDI20N12AFXUMA1 covers higher voltage rails and isolated supplies. |
| Technology | CMOS gate driver | Magnetic coupling | Different isolation approaches; magnetic coupling provides galvanic isolation. |
Design trade-offs
The MCP1402T-E/OT is a traditional low-side driver IC, optimized for direct MOSFET or IGBT gate drive in applications where isolation is not required. Its 500mA peak drive current is sufficient for most low- to mid-power MOSFETs, enabling reasonably fast switching and reducing transition losses. The supply voltage range starting at 4.5 V allows compatibility with common 5 V or 12 V rails without additional regulators. The small SOT-23-5 package minimizes PCB real estate, which is advantageous in compact designs.
In contrast, the 1EDI20N12AFXUMA1 employs magnetic coupling technology, inherently providing galvanic isolation between input and output. This is critical in applications requiring high-voltage isolation, such as driving high-side switches in half-bridge configurations or isolated gate drives in industrial environments. The wider supply voltage range (10 V to 35 V) supports higher gate voltages for MOSFETs that require 15 V or 18 V drive, improving efficiency and reducing conduction losses. Its faster rise and fall times (10 ns / 9 ns) enable better switching performance at high frequencies but may require careful PCB layout to mitigate EMI.
Thermally, the MCP1402T-E/OT’s smaller package has less thermal mass and may require more careful consideration of power dissipation during continuous high-current switching. The Infineon device’s larger SOIC package provides better thermal handling and potentially higher continuous power throughput, important in high power designs. However, exact power dissipation comparison is limited by lack of current peak data for the 1EDI20N12AFXUMA1.
From a layout perspective, the MCP1402T’s SOT-23-5 package is simpler to route for single low-side drivers, while the 1EDI20N12AFXUMA1’s SOIC footprint and magnetic coupling approach necessitate isolation clearance and creepage considerations, potentially increasing PCB complexity and cost. The magnetic coupling also means the Infineon device may require more careful signal integrity design and potentially different gate drive timing considerations.
Cost-wise, the MCP1402T-E/OT is likely lower due to simpler technology and smaller package, suitable for volume designs where isolation is not mandatory. The 1EDI20N12AFXUMA1, with its integrated magnetic isolation, targets niche applications requiring safety isolation and higher voltage drive, justifying higher cost.
Use-case fit
Choose MCP1402T-E/OT when…
- Designing a low-side gate driver for N-channel MOSFETs or IGBTs in non-isolated DC-DC converters or motor drives.
- Space-constrained designs where PCB area is at a premium and a minimal footprint SOT-23-5 package simplifies layout.
- Systems operating from 5 V or 12 V rails needing a robust 500mA peak drive current for standard MOSFET switching speeds.
- Projects requiring simple non-inverting logic input thresholds compatible with common microcontroller or logic-level signals.
- Cost-sensitive volume production where isolation is not required and low component cost is a priority.
Choose 1EDI20N12AFXUMA1 when…
- Isolated gate drive is mandatory, such as high-side MOSFET or IGBT drives in half-bridge or full-bridge inverters.
- Applications using higher gate drive voltages (15 V to 35 V) to fully enhance MOSFETs and reduce conduction losses.
- Circuits requiring fast switching edges (rise/fall times ~10 ns) to optimize efficiency at high switching frequencies (>100 kHz).
- Industrial or safety-critical environments where galvanic isolation between control and power circuits is required.
- Designs where thermal dissipation needs exceed what a small SOT-23-5 package can handle, leveraging the larger SOIC package.
Drop-in compatibility
These two devices are not pin-compatible or footprint-compatible. The MCP1402T-E/OT comes in a 5-pin SOT-23-5 package with a simple low-side driver pinout, while the 1EDI20N12AFXUMA1 is in an 8-pin SOIC with magnetic coupling and isolation, necessitating a different pin configuration and layout. Substituting one for the other would require PCB redesign and verification of gate drive scheme and supply voltages. The MCP1402T-E/OT cannot replace the isolated 1EDI20N12AFXUMA1 without losing isolation, and vice versa.
Alternatives to consider
- IR2110 (International Rectifier / Infineon): High- and low-side driver IC with integrated level shifting, suitable for half-bridge applications requiring isolation via bootstrap.
- UCC37322 (Texas Instruments): High-current, non-isolated MOSFET driver with 9 A source/sink capability for very fast switching in power converters.
- Si8233 (Silicon Labs): Isolated digital gate driver with integrated galvanic isolation and configurable output drive strength, for isolated high-side and low-side driving.