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Product Detailed Parameters
- Description：48V PHASE DISCONNECT IC
- Series：-
- Mfr：Allegro MicroSystems
- Package：Tape & Reel (TR),Cut Tape (CT)
- Technology：Optical Coupling
- Number of Channels：2
- Voltage - Isolation：-
- Propagation Delay tpLH / tpHL (Max)：400ns, 850ns
- Pulse Width Distortion (Max)：-
- Rise / Fall Time (Typ)：-
- Current - Output High, Low：-
- Current - Peak Output：-
- Voltage - Forward (Vf) (Typ)：-
- Voltage - Output Supply：4.5V ~ 85V
- Grade：Automotive
- Qualification：AEC-Q100
- Operating Temperature：-40°C ~ 150°C
- Mounting Type：Surface Mount
- Package / Case：28-VFQFN Exposed Pad
- Supplier Device Package：28-QFN (5x5)
- Common Mode Transient Immunity (Min)：-
- Approval Agency：-
- Current - DC Forward (If) (Max)：-
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Overview
The A89103KETSR-3 is a three-phase isolated power MOSFET gate driver manufactured by Allegro MicroSystems. It features five drivers with an inverting configuration, operating within a supply voltage range of 4.5 V to 85 V. The device utilizes silicon technology and is housed in a QFN-28 surface-mount package. Key timing parameters include a maximum rise time of 1.2 µs and a fall time of 150 ns. Propagation delays are specified at maximum values of 400 ns, 850 ns, and 500 ns. It operates reliably between -40°C and +150°C, with a typical quiescent current of 20 mA.
Feature Summary
- Provides isolation for driving N-channel power MOSFETs in three-phase applications
- Features an inverting signal configuration for precise control logic integration
- Designed for high-temperature operation suitable for demanding industrial environments
Applications
- Three-phase motor drive systems
- Industrial automation equipment requiring isolated switching
- Power conversion circuits utilizing N-channel MOSFETs
Procurement Notes
Verify the specific suffix KESR-3 against official Allegro documentation to confirm pinout and electrical characteristics match your design requirements. Ensure compatibility with your system's voltage levels and thermal management strategy. Confirm that the QFN-28 package footprint aligns with your PCB layout guidelines before finalizing procurement decisions.
Selection Notes
Select this component when designing three-phase systems requiring isolated gate driving capabilities. Consider its wide operating voltage range and high-temperature rating for robust performance. Evaluate the propagation delay specifications against your switching frequency requirements to ensure efficient power stage operation without excessive cross-conduction risks.
Part Context
This part belongs to the A89103 series from Allegro MicroSystems, focusing on power management ICs. It serves as a specialized gate driver solution within their portfolio, distinct from general-purpose drivers. The product line targets applications needing reliable isolation and high-voltage handling in compact packages.
Replacement Considerations
Consult official Allegro MicroSystems documentation for confirmed substitute part numbers. Verify functional equivalence regarding isolation ratings, voltage limits, and package dimensions before implementing any alternative components in your design.
