Power Integrations INN4276C-H186-TL

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Product attributes Property Value
Manufacturer Power Integrations
Product Series
Packaging Tape & Reel (TR) |
Output Isolation Isolated
Internal Switch(s) Yes
Voltage - Breakdown 750V
Topology Flyback, Secondary Side SR
Voltage - Start Up -
Voltage - Supply (Vcc/Vdd) 85V ~ 265V
Duty Cycle -
Frequency - Switching 50kHz ~ 140kHz
Power (Watts) 125 W
Fault Protection Current Limiting, Over Temperature, Over Voltage, UVLO
Control Features Soft Start
Operating Temperature -40°C ~ 105°C (TA)
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case 24-PowerSMD Module (0.425", 10.80mm Width), 17 Leads
Supplier Device Package InSOP-24D
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The INN4276C-H186-TL from Power Integrations is an isolated flyback offline switcher with an integrated 750V switch and secondary-side synchronous rectification. Delivering up to 125 W across a 50kHz to 140kHz switching range, it includes current limiting, over temperature, over voltage, and UVLO protection plus soft start. Housed in a 24-PowerSMD module, it operates from -40°C to 105°C.

  • Integrated 750V switch simplifies primary-side design and reduces external component count.
  • Secondary-side synchronous rectification topology supports efficient isolated power conversion.
  • 125 W output capability suits medium-power offline applications.
  • Comprehensive protection set (current limiting, OTP, OVP, UVLO) enhances reliability.
  • Wide -40°C to 105°C operating range for demanding environments.

AC-DC Adapters and Chargers

The 125 W power capability and 750V breakdown voltage make this flyback device well suited for offline adapters requiring a robust primary switch margin across universal mains input.

Industrial Power Supplies

With an operating temperature range of -40°C to 105°C and integrated over temperature and over voltage protection, it supports reliable operation in demanding industrial environments.

Secondary-Side Synchronous Rectification Designs

The flyback, secondary-side SR topology improves efficiency in isolated outputs, making it a fit for compact power supplies where secondary rectification losses matter.

Universal Input Offline Systems

An 85V to 265V Vcc supply range supports designs spanning worldwide mains voltages, while soft start limits inrush stress during power-up.

Q: What topology does the INN4276C-H186-TL use?
A: It is a flyback offline switcher with secondary-side synchronous rectification, providing galvanic isolation.
Q: What is the power rating?
A: It delivers up to 125 W.
Q: What is the breakdown voltage?
A: The integrated switch has a 750V Vds rating.
Q: What switching frequency does it support?
A: It operates from 50kHz to 140kHz.
Q: What protections are included?
A: Current limiting, over temperature, over voltage, and UVLO.
Base Product Number : INN4276C-H186
125 W 24-PowerSMD 750V AC-DC Flyback Converter Isolated Offline Switcher Secondary Side SR
Q: What topology does the INN4276C-H186-TL use?
A: It is a flyback offline switcher with secondary-side synchronous rectification, providing galvanic isolation.
Q: What is the power rating?
A: It delivers up to 125 W.
Q: What is the breakdown voltage?
A: The integrated switch has a 750V Vds rating.
Q: What switching frequency does it support?
A: It operates from 50kHz to 140kHz.
Q: What protections are included?
A: Current limiting, over temperature, over voltage, and UVLO.