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Product Detailed Parameters
- Description：IC OFFLINE SW FLBACK INSOP-24D
- Series：InnoSwitch™3-AQ
- Mfr：Power Integrations
- Package：Bulk
- Output Isolation：Isolated
- Internal Switch(s)：Yes
- Voltage - Breakdown：750V
- Topology：Flyback, Secondary Side SR
- Voltage - Start Up：-
- Voltage - Supply (Vcc/Vdd)：30V ~ 520V
- Duty Cycle：-
- Frequency - Switching：25kHz ~ 95kHz
- Fault Protection：Current Limiting, Over Temperature, Over Voltage, Short Circuit, UVLO
- Control Features：Frequency Control, Soft Start
- Operating Temperature：-40°C ~ 125°C (TA)
- Package / Case：24-PowerSMD Module (0.425", 10.80mm Width), 17 Leads
- Supplier Device Package：InSOP-24D
- Mounting Type：Surface Mount
- Grade：Automotive
- Qualification：AEC-Q100
- Power (Watts)：30 W
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Overview
The INN3977CQ0500-TL is an AC/DC converter from the InnoSwitch3-AQ family, designed for automotive applications. It integrates a flyback controller, a 750 V switch, and FluxLink feedback in an InSOP-24D package. The device supports a wide input voltage range of 30 V to 550 V DC with a maximum output power of 30 W. Operating at a switching frequency of 132 kHz, it features a low operating supply current of 200 µA.
Feature Summary
- Integrates primary and secondary controllers with safety-rated FluxLink feedback
- Includes multi-mode Quasi-Resonant (QR) / CCM flyback control
- Provides comprehensive protection against overvoltage, overcurrent, and overtemperature
Applications
- Automotive traction inverter gate-driver power supplies
- Emergency power supplies for electric vehicles
- Auxiliary and bias power for onboard chargers
Procurement Notes
Verify component authenticity through authorized Power Integrations distributors or certified channels. Confirm that the specific suffix matches the required packaging and temperature grade. Ensure compliance with AEC-Q100 qualification standards for automotive deployment. Review the latest datasheet for any updates regarding manufacturing site certifications and regulatory approvals before finalizing procurement.
Selection Notes
Select this component for designs requiring high efficiency and compact size within the 30 V to 550 V DC input range. It is suitable for applications needing integrated safety isolation without external optocouplers. Consider the 750 V switch rating relative to the system's peak voltage stress. Evaluate thermal performance requirements given the InSOP-24D package constraints for the target power level.
Part Context
This part belongs to the InnoSwitch3-AQ series, which simplifies flyback converter design by combining multiple functions into a single IC. The series is qualified for automotive use under AEC-Q100 standards. It targets high-efficiency power conversion needs in electric vehicle architectures, offering reduced component count and improved reliability compared to discrete solutions.
Replacement Considerations
Consider the INN3947CQ0500-TL for designs requiring a higher voltage rating of 1700 V. Verify pinout compatibility and thermal characteristics when substituting within the InnoSwitch3-AQ family.
