TOP224G-TL Equivalent & Substitute Parts Reference

Part Overview

The TOP224G-TL is an offline switch IC from Power Integrations' TOPSwitch®-II series, designed for isolated power conversion applications supporting Boost, Buck, Flyback, and Forward topologies. This component operates at 100kHz switching frequency with 30W power capability and integrated current limiting and over-temperature fault protection.

The TOP224G-TL carries an Obsolete product status. Locating equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems utilizing this topology.

Substiute Parts

TOP224G-TL

Power IntegrationsIn Stock: 1059TOP224G-TL Datasheet

Current PartRFQ

TOP224GN-TL

Power IntegrationsIn Stock: 16688TOP224GN-TL Datasheet

DirectRFQ

TOP221GN-TL

Power IntegrationsIn Stock: 10339TOP221GN-TL Datasheet

Parametric EquivalentRFQ

TOP222GN-TL

Power IntegrationsIn Stock: 8808TOP222GN-TL Datasheet

Parametric EquivalentRFQ

TOP223GN-TL

Power IntegrationsIn Stock: 4469TOP223GN-TL Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TOP224G-TL is determined by strict parameter matching across the following critical criteria:

Mandatory Matching Parameters:

• Manufacturer: Power Integrations
• Series: TOPSwitch®-II
• Package / Case: 8-SMD, Gull Wing
• Voltage - Breakdown: 700V
• Topology: Boost, Buck, Flyback, Forward
• Frequency - Switching: 100kHz
• Duty Cycle: 67%
• Output Isolation: Isolated
• Internal Switch(s): Yes
• Fault Protection: Current Limiting, Over Temperature
• Operating Temperature: -40°C ~ 150°C (TJ)
• Mounting Type: Surface Mount
• MSL: 4 (72 Hours)

Variable Parameter (Power Rating): The power rating in watts may differ among substitute parts while maintaining full functional compatibility within the specified topology and electrical operating envelope.

All identified substitutes meet these mandatory criteria. The TOP224GN-TL, TOP221GN-TL, TOP222GN-TL, and TOP223GN-TL are qualified equivalents within the TOPSwitch®-II family.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: TOP224GN-TL

The TOP224GN-TL is the direct functional equivalent of the TOP224G-TL, maintaining identical power rating (30W) and all critical electrical parameters. This part carries RoHS Compliant status and significantly higher inventory availability (16,600 pcs vs. 973 pcs). The TOP224GN-TL is designated "Not For New Designs" but remains suitable for replacement and sustaining engineering applications.

Secondary Substitutes by Power Rating:

• TOP223GN-TL (25W): Suitable for applications where 25W power capacity meets design requirements. Inventory: 4,400 pcs.
• TOP222GN-TL (15W): Suitable for applications where 15W power capacity meets design requirements. Inventory: 8,721 pcs.
• TOP221GN-TL (9W): Suitable for applications where 9W power capacity meets design requirements. Inventory: 10,300 pcs.

All substitute parts share identical electrical characteristics (700V breakdown, 100kHz switching, 67% duty cycle, isolated output) and package specifications (8-SMD, Gull Wing, Surface Mount). Selection among secondary substitutes depends solely on whether the application's power requirement can be satisfied by the lower wattage rating.

All substitutes carry RoHS Compliant status, providing improved environmental compliance compared to the original TOP224G-TL.

Frequently Asked Questions (FAQ)

Q: Can TOP224GN-TL directly replace TOP224G-TL in existing designs?

A: Yes. The TOP224GN-TL maintains identical electrical specifications (30W, 700V breakdown, 100kHz switching frequency, 67% duty cycle) and package configuration (8-SMD, Gull Wing). Pin-to-pin compatibility is confirmed. The primary difference is RoHS Compliant status of the TOP224GN-TL versus non-compliant status of the original part.

Q: What is the difference between TOP224G-TL and TOP224GN-TL packaging?

A: The TOP224G-TL is supplied in standard packaging. The TOP224GN-TL is supplied in Tape & Reel (TR) format, which is standard for high-volume production and automated assembly. Both use identical 8-SMD, Gull Wing package geometry.

Q: Can I use TOP223GN-TL, TOP222GN-TL, or TOP221GN-TL as substitutes?

A: These parts are parametric equivalents within the TOPSwitch®-II family and share all mandatory electrical and mechanical specifications. However, they have lower power ratings (25W, 15W, and 9W respectively). Substitution is valid only if your application's power requirement does not exceed the substitute part's rating. Exceeding the rated power will result in thermal stress and potential device failure.

Q: Are all substitute parts RoHS compliant?

A: Yes. TOP224GN-TL, TOP223GN-TL, TOP222GN-TL, and TOP221GN-TL are all RoHS Compliant. The original TOP224G-TL is RoHS non-compliant.

Q: What is the MSL rating and why does it matter?

A: All parts carry MSL 4 (72 Hours) rating. This indicates the component can be exposed to ambient conditions of 30°C / 85% RH for up to 72 hours before soldering. Exceeding this exposure window requires baking the component at 125°C for 24 hours before assembly.

Q: Which substitute offers the best inventory availability?

A: TOP224GN-TL offers the highest inventory (16,600 pcs), followed by TOP221GN-TL (10,300 pcs) and TOP222GN-TL (8,721 pcs). For direct 30W replacement, TOP224GN-TL is the optimal choice.

Q: Are there any differences in operating temperature range?

A: No. All parts operate across -40°C to 150°C (TJ) junction temperature range.