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Product attributes Property Value
Manufacturer Power Integrations
Product Series InnoSwitch™-CE
Packaging Cut Tape (CT) | Tape & Reel (TR)
Output Isolation Isolated
Internal Switch(s) Yes
Voltage - Breakdown 650V
Topology Flyback, Secondary Side SR
Voltage - Start Up -
Voltage - Supply (Vcc/Vdd) -
Duty Cycle 60%
Frequency - Switching 100kHz
Power (Watts) 20 W
Fault Protection Over Temperature, Over Voltage
Control Features -
Operating Temperature -40°C ~ 105°C (TA)
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case 16-PowerSOIC (0.350", 8.89mm Width), 15 Leads
Supplier Device Package eSOP-R16B
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The Power Integrations INN2125K-TL is an offline flyback switcher from the InnoSwitch™-CE series with an integrated 650V switch and secondary-side synchronous rectification. It delivers 20 W at 100kHz switching frequency with 60% maximum duty cycle, packaged in a 16-PowerSOIC (15 leads) for isolated AC-DC designs.

  • Integrated 650V switch reduces external component count in offline flyback designs.
  • Secondary-side SR supports efficient isolated power conversion.
  • 20 W output at 100kHz switching frequency suits compact adapters.
  • Over Temperature and Over Voltage protection improve reliability.
  • -40°C ~ 105°C operating range for broad deployment.

Compact AC-DC Adapters

The 20 W power rating and 100kHz switching frequency make this flyback device well suited to compact isolated adapters where secondary-side SR improves efficiency.

Chargers and Power Supplies

With a 650V breakdown rating and integrated switch, the INN2125K-TL handles offline flyback designs with fewer external components.

Industrial Control Supplies

The -40°C ~ 105°C operating range supports use in controlled and moderately demanding environments for isolated auxiliary rails.

Consumer Electronics Power

Secondary-side synchronous rectification in a flyback topology delivers isolated output suitable for consumer power delivery.

Q: What topology does the INN2125K-TL use?
A: It is a flyback offline switcher with secondary-side synchronous rectification, providing galvanically isolated output.
Q: What is the breakdown voltage?
A: The integrated switch has a 650V breakdown (Vds) rating.
Q: How much power can it deliver?
A: It is rated for 20 W of output power at 100kHz switching frequency.
Q: Does it include an internal switch?
A: Yes, the power switch is integrated on-chip.
Q: What protections are included?
A: Over Temperature and Over Voltage protection.
Base Product Number : INN2125K
100kHz 16-PowerSOIC 20 W 650V Flyback Converter InnoSwitch-CE Isolated Offline Switcher Secondary Side SR
Q: What topology does the INN2125K-TL use?
A: It is a flyback offline switcher with secondary-side synchronous rectification, providing galvanically isolated output.
Q: What is the breakdown voltage?
A: The integrated switch has a 650V breakdown (Vds) rating.
Q: How much power can it deliver?
A: It is rated for 20 W of output power at 100kHz switching frequency.
Q: Does it include an internal switch?
A: Yes, the power switch is integrated on-chip.
Q: What protections are included?
A: Over Temperature and Over Voltage protection.