TOP224G Equivalent & Substitute Parts Reference

Part Overview

The TOP224G is an offline switch IC from Power Integrations' TOPSwitch®-II series, designed for isolated power conversion applications. This device integrates a high-voltage power switch with control circuitry, supporting multiple topologies including Boost, Buck, Flyback, and Forward configurations at 100kHz switching frequency with 30W power rating.

The TOP224G is classified as Obsolete. Locating equivalent substitute parts is necessary to support ongoing production requirements, field repairs, and design continuity for systems currently utilizing this component. The primary substitute maintains identical electrical and mechanical specifications while offering improved compliance status and availability.

Substiute Parts

TOP224G

Power IntegrationsIn Stock: 2229TOP224G Datasheet

Current PartRFQ

TOP224GN-TL

Power IntegrationsIn Stock: 16688TOP224GN-TL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TOP224G is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Voltage - Breakdown: 700V
• Power Rating: 30W
• Frequency - Switching: 100kHz
• Duty Cycle: 67%
• Topology Support: Boost, Buck, Flyback, Forward
• Output Isolation: Isolated
• Fault Protection: Current Limiting, Over Temperature

Mechanical Equivalence Requirements:

• Package / Case: 8-SMD, Gull Wing
• Mounting Type: Surface Mount
• Moisture Sensitivity Level: 4 (72 Hours)

Compliance Considerations:

• RoHS Status and REACH compliance affect long-term supply chain viability
• Product Status (Obsolete vs. Not For New Designs) influences availability and support

The substitute part TOP224GN-TL maintains complete electrical and mechanical compatibility with the TOP224G while offering improved regulatory compliance and higher inventory availability.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitution: TOP224GN-TL

The TOP224GN-TL is a direct functional equivalent to the TOP224G. All electrical parameters, mechanical specifications, and thermal characteristics are identical. The substitute part is suitable for:

• Direct replacement in existing TOP224G designs
• PCB assembly without layout or schematic modifications
• Applications requiring identical switching frequency, power rating, and topology support

Compliance Advantages:

The TOP224GN-TL offers RoHS Compliance status, whereas the TOP224G is RoHS non-compliant. Both parts maintain REACH Unaffected status and EAR99 export classification. The improved compliance profile of TOP224GN-TL supports supply chain continuity for regions with regulatory requirements.

Availability Consideration:

TOP224GN-TL inventory (16600 Pcs) significantly exceeds TOP224G availability (2210 Pcs), providing improved supply security for production and field service applications.

Product Status Context:

TOP224G is classified as Obsolete, indicating end-of-life status. TOP224GN-TL is classified as Not For New Designs, indicating limited support for new product development but continued availability for existing applications. For ongoing production support, TOP224GN-TL is the appropriate selection.

Frequently Asked Questions (FAQ)

Q: Can TOP224GN-TL replace TOP224G in existing designs without modification?

A: Yes. TOP224GN-TL is electrically and mechanically identical to TOP224G. No schematic, PCB layout, or firmware changes are required. Pin configuration, package footprint, and electrical performance are equivalent.

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

A: The primary differences are packaging format (Bulk vs. Tape & Reel), RoHS compliance status (non-compliant vs. compliant), and product lifecycle status (Obsolete vs. Not For New Designs). Electrical and mechanical specifications are identical.

Q: Why is TOP224G classified as Obsolete?

A: Obsolete classification indicates the manufacturer has discontinued production and support. TOP224GN-TL remains available as a functionally equivalent alternative with improved compliance and higher inventory levels.

Q: Is TOP224GN-TL suitable for new product designs?

A: TOP224GN-TL is classified as Not For New Designs. For new applications, Power Integrations recommends evaluating current-generation TOPSwitch products. However, TOP224GN-TL remains available for production support of existing designs and field repairs.

Q: What is the Moisture Sensitivity Level (MSL) requirement for storage?

A: Both TOP224G and TOP224GN-TL have MSL 4 rating, requiring storage at ≤40°C and ≤90% relative humidity for a maximum of 72 hours after package opening. Extended storage requires dry-pack conditions with desiccant.

Q: Are there any thermal or electrical performance differences between the two parts?

A: No. Operating temperature range (-40 to 150°C TJ), breakdown voltage (700V), power rating (30W), switching frequency (100kHz), and all protection features are identical.

Q: What packaging formats are available?

A: TOP224G is supplied in Bulk packaging. TOP224GN-TL is supplied in Tape & Reel (TR) format, suitable for automated assembly processes.