Power Integrations INN4174C-H191-TL

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Product attributes Property Value
Manufacturer Power Integrations
Product Series InnoSwitch™4-CZ
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) -
Duty Cycle -
Frequency - Switching 50kHz ~ 140kHz
Power (Watts) 170 W
Fault Protection Current Limiting, Over Load, Over Temperature, Over Voltage, Short Circuit, UVLO
Control Features Frequency Control, 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 INN4174C-H191-TL is a Power Integrations InnoSwitch™4-CZ offline flyback switcher featuring secondary-side synchronous rectification and an integrated 750V switch. It delivers up to 170 W across a 50kHz to 140kHz switching range, with frequency control and soft start. Protections include current limiting, over load, over temperature, over voltage, short circuit, and UVLO. The 24-PowerSMD module operates from -40°C to 105°C.

  • Integrated 750V switch simplifies isolated flyback designs and cuts external parts.
  • 170 W output supports high-power adapters and industrial supplies.
  • Secondary-side SR boosts efficiency in the output stage.
  • Full protection set (current limiting, OVP, OTP, SCP, UVLO) improves reliability.
  • Frequency control and soft start reduce design stress.

High-Power Offline Adapters

The 170 W rating and 750V integrated switch support universal AC input adapters. Secondary-side SR improves efficiency in the isolated output stage.

Industrial Power Supplies

Operating from -40°C to 105°C, the device fits industrial supplies. Frequency control and soft start ease integration, while short circuit and UVLO protection improve safety.

Telecom and Networking Power

Galvanic isolation and robust protection suite make it suitable for telecom and networking power designs requiring reliable offline conversion.

Appliance Power Modules

Integrated switch and flyback topology reduce BOM count for compact isolated appliance power modules.

Q: What is the topology of the INN4174C-H191-TL?
A: It is an isolated flyback converter with secondary-side synchronous rectification.
Q: What is the switch breakdown voltage?
A: 750V Vds rating with an integrated switch.
Q: What output power does it support?
A: Up to 170 W.
Q: What switching frequency does it use?
A: 50kHz to 140kHz.
Q: What is the operating temperature range?
A: -40°C to 105°C (TA).
Base Product Number : INN4174C-H191
170 W 24-PowerSMD 750V AC-DC Converter Flyback Converter InnoSwitch4-CZ Isolated Offline Switcher Secondary Side SR
Q: What is the topology of the INN4174C-H191-TL?
A: It is an isolated flyback converter with secondary-side synchronous rectification.
Q: What is the switch breakdown voltage?
A: 750V Vds rating with an integrated switch.
Q: What output power does it support?
A: Up to 170 W.
Q: What switching frequency does it use?
A: 50kHz to 140kHz.
Q: What is the operating temperature range?
A: -40°C to 105°C (TA).