1EDN7116UXTSA1 vs A89103KETSR-5: High-Side and Floating Gate Driver IC Comparison

Quick verdict

For single high-side GaN or MOSFET gate driving up to 200 V bootstrap voltage, the Infineon 1EDN7116UXTSA1 is a focused, application-specific choice offering straightforward integration. The Allegro A89103KETSR-5 excels in multi-phase floating gate driving with automotive-grade robustness and a wide supply voltage range (4.5 V to 85 V), making it better suited for complex 3-phase or harsh environment applications.

Spec comparison table

Spec1EDN7116UXTSA1A89103KETSR-5Notes
Driven ConfigurationHigh-SideFloatingHigh-side driver (1EDN7116UXTSA1) is simpler for single high-side FETs; floating suits multi-phase or half-bridge applications.
Number of Drivers13A89103KETSR-5 supports 3 channels, reducing component count in multi-phase systems.
Gate TypeGaN FET, MOSFET (N-Channel)MOSFET (N-Channel)1EDN7116UXTSA1 explicitly supports GaN FETs, which require specialized drive.
High-Side Voltage Max Bootstrap200 VNot specified1EDN7116UXTSA1 supports up to 200 V bootstrap, suitable for higher voltage rails.
Voltage SupplyNot specified4.5 V to 85 VA89103KETSR-5 supports a very wide supply range, enabling more flexible system voltages.
Operating Temperature RangeNot specified-40°C to 150°C (TA)A89103KETSR-5 is qualified for automotive grade temperature, better for harsh environments.
Package CaseNot specified28-VFQFN Exposed PadA89103KETSR-5’s package supports better thermal dissipation via exposed pad.
Supplier Device PackageNot specified28-QFN (5x5)A89103KETSR-5’s package is precisely defined, aiding PCB footprint design.
Input TypeNot specifiedNon-InvertingA89103KETSR-5’s input logic levels are specified (0.8 V low, 2 V high), aiding logic interface design.
Logic Voltage VIL/VIHNot specified0.8 V / 2 VDefined for A89103KETSR-5, allowing clear logic compatibility checks.
Rise/Fall Time (Typical)Not specified1.2 µs (rise), 150 ns (fall)A89103KETSR-5 provides rise/fall time data to estimate switching speed and EMI.
Channel TypeNot specified3-PhaseA89103KETSR-5 is designed for multi-phase operation, 1EDN7116UXTSA1 is single driver.
GradeNot specifiedAutomotiveA89103KETSR-5 is AEC-Q100 qualified, supporting automotive-grade reliability.
Mounting TypeNot specifiedSurface MountBoth are surface mount but only A89103KETSR-5 specifies package details.
QualificationNot specifiedAEC-Q100A89103KETSR-5 is qualified for automotive, implying higher reliability requirements.

Design trade-offs

The 1EDN7116UXTSA1 is a dedicated high-side driver primarily targeting single-channel applications using GaN or N-channel MOSFETs. Its support for bootstrap voltages up to 200 V makes it suitable for moderately high-voltage rails common in industrial or server power supplies. However, the lack of detailed published specs on thermal limits, logic input thresholds, or package type means the engineer must carefully validate operating conditions and possibly rely on Infineon’s application notes.

In contrast, the A89103KETSR-5 is a 3-channel floating driver designed for multi-phase topologies, such as 3-phase motor drives or synchronous rectification in power conversion. Its wide supply voltage range (4.5 V to 85 V) allows it to operate directly from bus voltages or isolated supplies, reducing the need for auxiliary power rails. The specified rise and fall times (1.2 µs rise, 150 ns fall) provide insight into switching speed and enable EMI and efficiency optimization.

Thermally, the A89103KETSR-5’s 28-pin QFN with exposed pad supports better heat dissipation, which is critical in automotive or high-power applications. Its automotive qualification (AEC-Q100) guarantees reliability under extended temperature and vibration stress, a clear advantage for embedded motor control or traction inverter use cases.

From a firmware and layout perspective, the 1EDN7116UXTSA1’s single high-side driver simplifies gate drive timing and isolation requirements but may require external low-side drivers or bootstrap components. The A89103KETSR-5’s integrated 3-channel driver reduces component count and PCB complexity but demands careful layout to manage switching noise coupling between phases.

Regarding cost, the 1EDN7116UXTSA1 might be more cost-effective for simple single-channel designs, while the A89103KETSR-5’s multi-channel capability and automotive grade come at a premium justified by system-level savings and reliability.

Use-case fit

Choose 1EDN7116UXTSA1 when…

Choose A89103KETSR-5 when…

Drop-in compatibility

There is no evidence that these two devices are pin-compatible or footprint-compatible. The 1EDN7116UXTSA1’s package and pinout are unspecified, while the A89103KETSR-5 uses a defined 28-QFN (5x5 mm) package. Additionally, the functional difference—single high-side driver vs. 3-phase floating driver—implies that substitution would require significant schematic and PCB changes. Therefore, these parts are not drop-in replacements.

Alternatives to consider