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Product Detailed Parameters
- Description：IC MOTOR DRIVER
- Series：-
- Mfr：onsemi
- Package：Tube,Tube
- Motor Type - Stepper：-
- Motor Type - AC, DC：-
- Function：-
- Output Configuration：-
- Interface：-
- Technology：-
- Step Resolution：-
- Applications：-
- Current - Output：-
- Voltage - Supply：-
- Voltage - Load：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The STK621-140C is a three-phase inverter hybrid integrated circuit manufactured by onsemi, designed for AC motor control applications. It integrates three half-bridge drivers with a peak output current of 25A and an output current per channel of 20A. The device operates with a supply voltage range of 12.5V to 17.5V and supports load voltages up to 400V maximum. It utilizes IGBT technology and features a 22-SIP package with 18 leads. Key protection mechanisms include overcurrent limiting, overtemperature shutdown, and under-voltage lockout.
Feature Summary
- Integrates three half-bridge drivers for three-phase inverter applications
- Includes built-in fault protection such as overcurrent limiting and overtemperature shutdown
- Features bootstrap circuitry and status flag outputs for system monitoring
Applications
- AC motor drives
- Three-phase inverter systems
- Industrial motor control
Procurement Notes
This component is officially listed as obsolete and no longer manufactured by onsemi. Verification of availability should focus on surplus distributors or authorized secondary market channels rather than direct manufacturer allocation. Buyers must confirm the specific revision and authenticity due to the end-of-life status. Cross-referencing with official replacement recommendations from onsemi is advised before finalizing procurement decisions.
Selection Notes
Select this part only if legacy compatibility with existing three-phase inverter designs is required. The device is optimized for IGBT-based power stages and provides integrated driver functionality to simplify PCB layout. Engineers should evaluate the 22-SIP form factor constraints and ensure thermal management solutions accommodate the specified operating temperature range of -20°C to 150°C TJ.
Part Context
The STK621 series represents a family of hybrid integrated circuits designed for robust motor control applications. The STK621-140C specifically targets three-phase inverter topologies, combining gate drive logic with high-current output stages in a single package. This integration reduces component count and improves reliability compared to discrete driver implementations.
Replacement Considerations
Official documentation lists STK541UC62K-E as a similar substitute option. Verify pinout compatibility and electrical specifications against the original design requirements before substitution.
