TOP222G-TL Equivalent & Substitute Parts

Part Overview

The TOP222G-TL is an offline switch IC from Power Integrations' TOPSwitch®-II series, designed for isolated power conversion applications. This device functions as a controller and integrated power switch for boost, buck, flyback, and forward converter topologies operating at 100 kHz switching frequency with 15 W output power capability. The TOP222G-TL is classified as obsolete, necessitating identification of equivalent substitute components for ongoing design support and production continuity. Substitute parts within the TOPSwitch®-II family maintain core electrical and mechanical compatibility while offering updated product status and compliance certifications.

Substiute Parts

TOP222G-TL

Power IntegrationsIn Stock: 854TOP222G-TL Datasheet

Current PartRFQ

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

TOP224GN-TL

Power IntegrationsIn Stock: 16688TOP224GN-TL Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TOP222G-TL is determined by strict adherence to the following parameters:

Mandatory Matching Parameters:

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

Variable Parameter (Power Rating): The power output rating may differ among substitute parts. The TOP222G-TL operates at 15 W. Substitute parts with equal or higher power ratings (15 W, 25 W, 30 W) are functionally equivalent for applications requiring 15 W or less.

Packaging Variation: The main part TOP222G-TL is supplied in standard packaging. Substitute parts are available in Tape & Reel (TR) packaging, which is compatible for production environments requiring reel-based component handling.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: TOP222GN-TL

The TOP222GN-TL is the direct functional equivalent of TOP222G-TL, maintaining identical 15 W power rating and all electrical specifications. This part is recommended for applications currently using TOP222G-TL where component replacement is required. The TOP222GN-TL offers RoHS compliance and higher inventory availability (8721 units), supporting production continuity. Both parts share identical package geometry (8-SMD, Gull Wing) and mounting requirements.

Secondary Substitutes: TOP223GN-TL and TOP224GN-TL

For applications with power headroom, TOP223GN-TL (25 W) and TOP224GN-TL (30 W) provide higher power capability while maintaining all other electrical and mechanical parameters. These parts are suitable for designs operating below their rated power output. Selection between these options depends on thermal design margins and available board space.

Not Recommended: TOP221GN-TL

The TOP221GN-TL operates at 9 W maximum power output, below the TOP222G-TL specification of 15 W. This part is unsuitable for applications requiring the full 15 W capability and should not be selected as a substitute.

Compliance Consideration:

All substitute parts (TOP221GN-TL, TOP222GN-TL, TOP223GN-TL, TOP224GN-TL) are RoHS compliant, whereas the original TOP222G-TL is RoHS non-compliant. This compliance upgrade supports regulatory requirements for new production and procurement cycles.

Frequently Asked Questions (FAQ)

Q: Can TOP222GN-TL directly replace TOP222G-TL in existing designs?

A: Yes. TOP222GN-TL is electrically and mechanically identical to TOP222G-TL. Both operate at 15 W, 700V breakdown voltage, 100 kHz switching frequency, and use the same 8-SMD, Gull Wing package. PCB layout and schematic modifications are not required.

Q: What is the difference between TOP222G-TL and TOP222GN-TL?

A: The primary differences are product status (Obsolete vs. Not For New Designs), RoHS compliance (non-compliant vs. compliant), and packaging format (standard vs. Tape & Reel). Electrical performance and power rating are identical.

Q: Can I use TOP223GN-TL or TOP224GN-TL in place of TOP222G-TL?

A: Yes, if your application operates below 15 W. TOP223GN-TL (25 W) and TOP224GN-TL (30 W) are rated for higher power output and maintain all other electrical specifications. Verify that thermal design accommodates the higher-rated device. No schematic or layout changes are required.

Q: Why is TOP221GN-TL not recommended as a substitute?

A: TOP221GN-TL is rated for 9 W maximum output, which is below the TOP222G-TL specification of 15 W. Using this part in a 15 W application would result in insufficient power delivery and potential device failure.

Q: Are all substitute parts available in Tape & Reel packaging?

A: Yes. All substitute parts (TOP221GN-TL, TOP222GN-TL, TOP223GN-TL, TOP224GN-TL) are supplied in Tape & Reel (TR) packaging, suitable for automated assembly and high-volume production environments.

Q: Do substitute parts require different PCB footprints?

A: No. All substitute parts use the same 8-SMD, Gull Wing package geometry. PCB footprints and assembly processes remain unchanged.

Q: What is the operating temperature range for substitute parts?

A: All substitute parts operate across -40°C to 150°C junction temperature (TJ), identical to TOP222G-TL.

Q: Are there any compliance differences between TOP222G-TL and its substitutes?

A: Yes. TOP222G-TL is RoHS non-compliant, while all substitute parts (TOP221GN-TL, TOP222GN-TL, TOP223GN-TL, TOP224GN-TL) are RoHS compliant. All parts are REACH unaffected and classified as EAR99 for export control purposes.