Power Integrations TOPSwitch-JX | Power Integrations
TOPSwitch-JX series from Power Integrations
Power Integrations TOPSwitch-JX Series Overview
TOPSwitch-JX integrated power conversion IC for AC-DC and DC-DC applications.
The TOPSwitch-JX from Power Integrations is a TOPSwitch-JX integrated power conversion IC for AC-DC and DC-DC applications. This series includes 24 variants, each tailored for specific application requirements while sharing a common architecture and design ecosystem.
Designed for offline power conversion, the TOPSwitch-JX integrates key power components to minimize external component count, reduce board space, and simplify the design process. these devices help engineers meet increasingly stringent energy-efficiency standards while reducing time to market.
Octatronics stocks TOPSwitch-JX variants in multiple package options. Request a quote for volume pricing, check real-time availability, or contact our engineering team for application support and alternative part recommendations.
Key Features
- Highest IntegrationPrimary, secondary, and feedback circuits integrated on a single IC, reducing external component count by up to 50%.
- Scalable Output PowerSupports output power across a wide range with excellent load and line regulation.
- Comprehensive Protection SuiteIntegrated over-voltage, over-current, over-temperature, and short-circuit protection eliminates external protection circuitry.
- Ultra-Low No-Load PowerAdvanced burst-mode operation achieves <30mW no-load power consumption, meeting the strictest standby regulations.
- Simplified Design ProcessReference designs, PI Expert design software, and application notes accelerate time-to-production.
Target Applications
- Consumer chargers and adapters
- Industrial power supplies
- LED lighting drivers
- Home appliances
- IoT and smart home devices
Compare TOPSwitch-JX Variants
Side-by-side comparison of 6 product variants from Power Integrations
| Parameter | TOP271KG-TL | TOP266KG-TL | TOP264KG-TL | TOP271KG | TOP266KG | TOP264KG |
|---|---|---|---|---|---|---|
| Package / Case | 12-BESOP (0.350", 8.89mm Width), 11 Leads, Exposed Pad | 12-BESOP (0.350", 8.89mm Width), 11 Leads, Exposed Pad | 12-BESOP (0.350", 8.89mm Width), 11 Leads, Exposed Pad | eSOP-12B | eSOP-12B | eSOP-12B |
| Max Operating Temp | - | - | - | 150 °C | 150 °C | 150 °C |
| Min Operating Temp | - | - | - | -40 °C | -40 °C | -40 °C |
| Operating Temperature | -40°C ~ 150°C (TJ) | -40°C ~ 150°C (TJ) | -40°C ~ 150°C (TJ) | -40°C ~ 150°C (TJ) | -40°C ~ 150°C (TJ) | -40°C ~ 150°C (TJ) |
| Auto Restart and Overvoltage Response | - | - | - | Auto-restart | Auto-restart | Auto-restart |
| Auto Restart Threshold | - | - | - | 5.8 | 5.8 | 5.8 |
| Breakdown Voltage | - | - | - | 725 V | 725 V | 725 V |
| Control Features | Frequency Control | Frequency Control | Frequency Control | Selectable Current Limit, Frequency Jittering, Soft Start, Auto-Restart/Latching Fault Response, On/Off Control | Selectable Current Limit, Frequency Jittering, Soft Start, Auto-Restart/Latching Fault Response, On/Off Control | Selectable Current Limit, Frequency Jittering, Soft Start, Auto-Restart/Latching Fault Response, On/Off Control |
| Control Scheme | - | - | - | Secondary-side | Secondary-side | Secondary-side |
| Duty Cycle | 78% | 78% | 78% | 78% | 78% | 78% |
| Fault Protection | Current Limiting, Over Load, Over Temperature, Over Voltage, Short Circuit | Current Limiting, Over Load, Over Temperature, Over Voltage, Short Circuit | Current Limiting, Over Load, Over Temperature, Over Voltage, Short Circuit | Current Limiting, Over Load, Over Temperature, Over Voltage, Short Circuit | Current Limiting, Over Load, Over Temperature, Over Voltage, Short Circuit | Current Limiting, Over Load, Over Temperature, Over Voltage, Short Circuit |
| Internal Switch | - | - | - | Yes | Yes | Yes |
| Internal Switch S | Yes | Yes | Yes | Yes | Yes | Yes |
| Lifecycle Status | Active | Active | Active | Obsolete | Obsolete | Obsolete |
| Max Input Voltage | - | - | - | 265 V | 265 V | 265 V |
| Min Input Voltage | - | - | - | 85 V | 85 V | 85 V |
| Moisture Sensitive | - | Yes | Yes | - | - | Yes |
| Output Isolation | Isolated | Isolated | Isolated | Isolated | Isolated | Isolated |
| Output Power Max Enclosed 230v | - | - | - | 63.0 W | 36.0 W | 30.0 W |
| Output Power Max Enclosed Univ | - | - | - | 40.0 W | 23.0 W | 16.0 W |
| Output Power Max Open Frame 230v | - | - | - | 102.0 W | 58.0 W | 49.0 W |
| Output Power Max Open Frame Univ | - | - | - | 66.0 W | 39.0 W | 30.0 W |
| Over Temperature Response | - | - | - | Hysteretic | Hysteretic | Hysteretic |
| Package | - | 12-BESOP(0.350",8.89mmWidth),11Leads,ExposedPad | eSOP12B-12 | eSOP-12B | eSOP-12B | eSOP-12B |
| Power Watts | 102 W | 58 W | 49 W | 102 W | 58 W | 49 W |
| Product Family | - | - | - | TOPSwitch-JX | TOPSwitch-JX | TOPSwitch-JX |
| Product Type | - | - | - | IC | IC | IC |
| Protection Features | - | - | - | Output Undervoltage, Overtemperature, Output Overvoltage, Output Short Circuit, Output Open Loop, Output Overload, Remote Shutdown | Output Undervoltage, Overtemperature, Output Overvoltage, Output Short Circuit, Output Open Loop, Output Overload, Remote Shutdown | Output Undervoltage, Overtemperature, Output Overvoltage, Output Short Circuit, Output Open Loop, Output Overload, Remote Shutdown |
| Secondary Response | - | - | - | Auto-restart | Auto-restart | Auto-restart |
| Series | - | TOP266 | TOP264 | - | TOPSwitch®-JX | TOP264 |
| Supplier Device Package | 12-ESOP | 12-ESOP | 12-ESOP | 12-ESOP | 12-ESOP | 12-ESOP |
| Switching Frequency | 66kHz, 132kHz | 66kHz, 132kHz | 66kHz, 132kHz | 66kHz, 132kHz | 66kHz, 132kHz | 66kHz, 132kHz |
| Switching Frequency Max | - | - | - | 132 kHz | 132 kHz | 132 kHz |
| Topology | Flyback | Flyback | Flyback | Flyback | Flyback | Flyback |
| Tradename | - | TopSwitch-JX | TopSwitch-JX | - | - | TopSwitch-JX |
| Unit Weight | - | 0.017637 oz | 0.026419 oz | - | - | 0.022505 oz |
| Voltage Breakdown | 725V | 725V | 725V | - | - | - |
| Request Quote | Request Quote | Request Quote | Request Quote | Request Quote | Request Quote |
Selection Guide
Package
12-BESOP (0.350", 8.89mm Width), 11 Leads, Exposed Pad→TOP271KG-TLTOP266KG-TLTOP264KG-TL
eSOP-12B→TOP271KGTOP266KGTOP264KG
TOPSwitch-JX Series Applications
⚡
Energy & PowerPower conversion and protection components for solar, storage, charging, and industrial power.
⚡
EV & PowertrainTraction inverter, OBC, and high-voltage conversion devices.
⚡
Solar InvertersHigh-efficiency power conversion devices for photovoltaic inverters.
🚗
Automotive Power ManagementModule power and load-control devices.
Base Numbers
| Base Number | Description | Variants | Status | Action |
|---|---|---|---|---|
| TOP264KG | TOP264KG variants from Power Integrations | 2 MPNs | Active | View Details |
| TOP266KG | TOP266KG variants from Power Integrations | 2 MPNs | Active | View Details |
| TOP271KG | TOP271KG variants from Power Integrations | 2 MPNs | Active | View Details |
Technical Specifications
Compare key TOPSwitch-JX specifications across available variants. All parameters are typical values at 25 degC unless otherwise noted.
Power Specifications
Output Power
See datasheet
Input Voltage Range
85–265 VAC (universal input)
Peak Efficiency
>90%
No-Load Power
<30 mW
Safety & Compliance
Safety Certifications
UL, IEC 62368-1
EMI Standard
EN 55032 Class B
Energy Star
CoC Tier 2 / DoE Level VI compliant
Frequently Asked Questions
Common technical questions about the TOPSwitch-JX series.
The TOPSwitch-JX is a Power Integrations TOPSwitch-JX integrated power conversion IC for AC-DC and DC-DC applications. The series includes 24 variants optimized for different application requirements.
The TOPSwitch-JX series currently includes 24 variants. Each variant may differ in package type, operating specifications, and feature set. Browse the product table above to compare available options.
Octatronics is an authorized distributor of Power Integrations products including the TOPSwitch-JX series. We provide competitive pricing, fast delivery, and full traceability for all components. Request a quote or contact us for availability and lead times.
Yes, Octatronics supports both prototype and production quantities for the TOPSwitch-JX series. Small-quantity orders are available for design evaluation, with volume pricing for production runs. Contact our sales team for custom pricing.