Comparison: Infineon 6EDL04N06PTXUMA1 vs STMicroelectronics L6498DTR Gate Drivers
Quick verdict
For three-phase motor control applications requiring integrated multi-channel drivers and high-voltage bootstrap capability, the Infineon 6EDL04N06PTXUMA1 is the better choice due to its six half-bridge drivers and 620 V bootstrap rating. For simpler two-channel half-bridge designs or where peak gate current drive and fast switching edges are critical, the STMicroelectronics L6498DTR is preferable, offering higher peak output currents (2 A source, 2.5 A sink) and faster rise/fall times in a smaller footprint.
Spec comparison table
| Spec | 6EDL04N06PTXUMA1 | L6498DTR | Notes |
|---|---|---|---|
| Channel type | 3-Phase | Independent | 6EDL04N06PTXUMA1 integrates 3 half-bridges (6 drivers), suitable for 3-phase systems. L6498DTR has 2 independent channels, better for simpler or custom configurations. |
| Current peak output source/sink | Not specified | 2 A source / 2.5 A sink | L6498DTR provides explicit high peak gate drive current, enabling faster switching and better drive of large MOSFET/IGBT gates. 6EDL04N06PTXUMA1 missing data here is a drawback for precise design. |
| Programmable via Digi-Key | Not Verified | Not Verified | Both lack verified programmability through Digi-Key platform. |
| Driven configuration | Half-Bridge | High-Side, Low-Side | Functionally similar for half-bridge operation; 6EDL04N06PTXUMA1 focuses on half-bridge per phase, L6498DTR channels are independent but can be paired. |
| Gate type | IGBT, MOSFET (N-Channel, P-Channel) | IGBT, MOSFET (N-Channel) | 6EDL04N06PTXUMA1 supports both N- and P-channel MOSFETs, offering more flexibility. L6498DTR only supports N-Channel MOSFETs and IGBTs. |
| High-side voltage max bootstrap | 620 V | 500 V | 6EDL04N06PTXUMA1 supports higher bootstrap voltage, allowing use with higher bus voltages or more margin. |
| Input type | Non-Inverting | CMOS/TTL | 6EDL04N06PTXUMA1 non-inverting input logic can simplify certain control schemes. L6498DTR compatible with standard CMOS/TTL logic levels. |
| Logic voltage (V_IL, V_IH) | 1.1 V (low), 1.7 V (high) | 1.45 V (low), 2 V (high) | 6EDL04N06PTXUMA1 has lower VIH threshold, potentially compatible with lower-voltage logic. |
| Mounting type | Surface Mount | Surface Mount | Equal. |
| Number of drivers | 6 | 2 | 6EDL04N06PTXUMA1 integrates 3 phases (6 drivers), reducing component count for multi-phase designs. |
| Operating temperature range | -40°C to 125°C (TJ) | -40°C to 125°C (TJ) | Equal. |
| Package case | 28-SOIC (7.50 mm width) | 8-SOIC (3.90 mm width) | L6498DTR offers smaller footprint, beneficial for space-constrained designs. 6EDL04N06PTXUMA1 larger package integrates more channels. |
| Rise/fall time (typical) | 60 ns rise, 26 ns fall | 25 ns rise, 25 ns fall | L6498DTR offers faster switching edges, improving efficiency and EMI in high-frequency applications. |
| Voltage supply | 10 V to 17.5 V | 10 V to 20 V | L6498DTR supports wider supply voltage range, improving flexibility in system design. |
Design trade-offs
The 6EDL04N06PTXUMA1 targets integrated multi-phase motor driver applications by providing six half-bridge drivers in a single 28-SOIC package. This integration simplifies board layout and BOM for three-phase inverter stages, reducing inter-driver signal routing and improving timing consistency across phases. The higher 620 V bootstrap voltage rating offers margin for use in higher voltage systems or those with voltage spikes on the high-side rail. However, the datasheet lacks explicit peak output current specs for gate drive, which complicates detailed switching loss and efficiency calculations. The relatively slower rise time (60 ns) could translate to higher switching losses or more EMI compared to faster drivers.
In contrast, the L6498DTR provides two independent high-side/low-side drivers with explicit 2 A sourcing and 2.5 A sinking peak gate currents, enabling rapid charging/discharging of MOSFET gates for tight switching transitions. The 25 ns rise and fall times help reduce switching losses and electromagnetic interference, especially in high-frequency PWM scenarios. This driver supports only N-channel MOSFETs and IGBTs, which limits flexibility but aligns with common modern power stage designs. The smaller 8-SOIC package reduces PCB footprint and potentially lowers cost per driver, but requires multiple devices for multi-phase systems, increasing BOM complexity.
Thermally, the 6EDL04N06PTXUMA1’s larger package and integrated multi-channel design may simplify heat dissipation strategies, but the slower switching speeds could increase losses. The L6498DTR’s higher peak currents and faster switching edges may require careful layout to manage EMI and transient currents, as well as robust power supply decoupling to prevent voltage dips.
From a firmware perspective, the 6EDL04N06PTXUMA1’s non-inverting inputs and integrated multi-phase architecture may reduce control complexity, but its unknown peak current specs mean designers must validate switching performance experimentally. The L6498DTR’s CMOS/TTL inputs and independent channels provide more granular control but require managing multiple ICs in multi-phase setups.
Cost-wise, the integrated 6EDL04N06PTXUMA1 reduces component count for 3-phase drivers, potentially lowering overall cost and assembly complexity despite a larger package. The L6498DTR’s smaller package and fewer channels per device may be cheaper per unit but increase total system cost for multi-phase drives.
Use-case fit
Choose 6EDL04N06PTXUMA1 when…
- Designing a three-phase motor inverter requiring six half-bridge drivers in a single IC to minimize BOM and simplify PCB layout.
- Operating in systems with bus voltages close to or above 500 V, benefiting from the 620 V bootstrap rating for high-side MOSFET/IGBT driving.
- Using both N- and P-channel MOSFET topologies, as the driver supports both gate types.
- Prioritizing simplified control logic with non-inverting inputs compatible with lower VIH thresholds (1.7 V typical).
- Working in automotive or industrial environments requiring a wide junction temperature range (-40°C to 125°C) with integrated phase matching.
Choose L6498DTR when…
- Driving high gate charge MOSFETs or IGBTs where peak gate drive current (2 A/2.5 A) is critical for fast switching and reduced losses.
- Designing discrete half-bridge stages or custom multi-phase systems where independent driver channels are preferred.
- Space-constrained designs benefit from the smaller 8-SOIC package.
- The application requires fast switching edges (25 ns rise/fall) to reduce switching losses and EMI in high-frequency PWM control.
- Logic inputs are standard CMOS/TTL levels, and system supply voltages up to 20 V are needed.
Drop-in compatibility
There is no indication the 6EDL04N06PTXUMA1 and L6498DTR are pin- or footprint-compatible. The 6EDL04N06PTXUMA1 uses a 28-pin SOIC package with integrated six drivers for three half-bridges, while the L6498DTR is an 8-pin SOIC device with two independent drivers. Substituting one for the other would require significant PCB redesign, changes in driver count, and likely firmware modifications. No direct drop-in replacement is feasible.
Alternatives to consider
- Infineon 6EDL04I06NT: Similar integrated multi-phase half-bridge driver with detailed peak current specs, useful if more precise gate drive data is required.
- Texas Instruments UCC37322: High-speed dual MOSFET driver with 9 A peak current, suitable for applications demanding very high gate drive currents.
- ON Semiconductor NCP51820: Dual high-speed half-bridge driver with integrated dead-time and UVLO, balancing integration and performance for two-phase or single-phase drives.