Power Integrations InnoSwitch4-QR | Power Integrations
InnoSwitch4-QR series from Power Integrations
Power Integrations InnoSwitch4-QR Series Overview
Quasi-resonant flyback controller with exceptional no-load power consumption.
The InnoSwitch4-QR from Power Integrations is a Quasi-resonant flyback controller with exceptional no-load power consumption. This series includes 46 variants, each tailored for specific application requirements while sharing a common architecture and design ecosystem.
Designed for offline power conversion, the InnoSwitch4-QR 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 InnoSwitch4-QR 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%.
- Up to 75W Output PowerSupports output power up to Up to 75W 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
- TV power supplies
- Display power
- Appliance controllers
- LED drivers
Compare InnoSwitch4-QR Variants
Side-by-side comparison of 10 product variants from Power Integrations
| Parameter | INN4777C-H192 | INN4777C-H191 | INN4777C-H190 | INN4777C-H189 | INN4777C-H188 | INN4777C-H187 | INN4776C-H192 | INN4776C-H191 | INN4776C-H190 | INN4776C-H189 |
|---|---|---|---|---|---|---|---|---|---|---|
| Package / Case | InSOP-24D | InSOP-24D | InSOP-24D | InSOP-24D | InSOP-24D | InSOP-24D | InSOP-24D | InSOP-24D | InSOP-24D | InSOP-24D |
| Max Operating Temp | 150 °C | 150 °C | 150 °C | 150 °C | 150 °C | 150 °C | 150 °C | 150 °C | 150 °C | 150 °C |
| Min Operating Temp | -40 °C | -40 °C | -40 °C | -40 °C | -40 °C | -40 °C | -40 °C | -40 °C | -40 °C | -40 °C |
| Auto Restart and Overvoltage Response | Auto-restart | Auto-restart | Auto-restart | Latch Off | Auto-restart | Auto-restart | Auto-restart | Auto-restart | Auto-restart | Latch Off |
| Auto Restart Threshold | OL | OL | 90% | 63% | 3.45V | 63% | OL | OL | 90% | 63% |
| Breakdown Voltage | 750 V | 750 V | 750 V | 750 V | 750 V | 750 V | 750 V | 750 V | 750 V | 750 V |
| Cable Drop Compensation | X | X | X | X | X | X | X | X | X | X |
| Control Features | Synchronous Rectification, Cable Drop Compensation, Frequency Jittering, Soft Start, Auto-Restart/Latching Fault Response | Synchronous Rectification, Cable Drop Compensation, Frequency Jittering, Soft Start, Auto-Restart/Latching Fault Response | Synchronous Rectification, Cable Drop Compensation, Frequency Jittering, Soft Start, Auto-Restart/Latching Fault Response | Synchronous Rectification, Cable Drop Compensation, Frequency Jittering, Soft Start, Auto-Restart/Latching Fault Response | Synchronous Rectification, Cable Drop Compensation, Frequency Jittering, Soft Start, Auto-Restart/Latching Fault Response | Synchronous Rectification, Cable Drop Compensation, Frequency Jittering, Soft Start, Auto-Restart/Latching Fault Response | Synchronous Rectification, Cable Drop Compensation, Frequency Jittering, Soft Start, Auto-Restart/Latching Fault Response | Synchronous Rectification, Cable Drop Compensation, Frequency Jittering, Soft Start, Auto-Restart/Latching Fault Response | Synchronous Rectification, Cable Drop Compensation, Frequency Jittering, Soft Start, Auto-Restart/Latching Fault Response | Synchronous Rectification, Cable Drop Compensation, Frequency Jittering, Soft Start, Auto-Restart/Latching Fault Response |
| Control Scheme | Fluxlink | Fluxlink | Fluxlink | Fluxlink | Fluxlink | Fluxlink | Fluxlink | Fluxlink | Fluxlink | Fluxlink |
| Internal Switch | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Max Input Voltage | 265 V | 265 V | 265 V | 265 V | 265 V | 265 V | 265 V | 265 V | 265 V | 265 V |
| Min Input Voltage | 85 V | 85 V | 85 V | 85 V | 85 V | 85 V | 85 V | 85 V | 85 V | 85 V |
| MSL Rating | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| Official Product URL | https://www.power.com/products/innoswitch/innoswitch4-qr?language=en | https://www.power.com/products/innoswitch/innoswitch4-qr?language=en | https://www.power.com/products/innoswitch/innoswitch4-qr?language=en | https://www.power.com/products/innoswitch/innoswitch4-qr?language=en | https://www.power.com/products/innoswitch/innoswitch4-qr?language=en | https://www.power.com/products/innoswitch/innoswitch4-qr?language=en | https://www.power.com/products/innoswitch/innoswitch4-qr?language=en | https://www.power.com/products/innoswitch/innoswitch4-qr?language=en | https://www.power.com/products/innoswitch/innoswitch4-qr?language=en | https://www.power.com/products/innoswitch/innoswitch4-qr?language=en |
| Operating Mode | Quasi-Resonant | Quasi-Resonant | Quasi-Resonant | Quasi-Resonant | Quasi-Resonant | Quasi-Resonant | Quasi-Resonant | Quasi-Resonant | Quasi-Resonant | Quasi-Resonant |
| Output Power Max Continuous 380v | 185 W | 185 W | 185 W | 185 W | 185 W | 185 W | 170 W | 170 W | 170 W | 170 W |
| Output Power Max Peak 380v | 220 W | 220 W | 220 W | 220 W | 220 W | 220 W | 200 W | 200 W | 200 W | 200 W |
| Output Profile | CV | CV | CC | CC | CC | CC | CV | CV | CC | CC |
| Over Temperature Response | Hysteretic | Hysteretic | Hysteretic | Latch Off | Latch Off | Hysteretic | Hysteretic | Hysteretic | Hysteretic | Latch Off |
| Package | InSOP-24D | InSOP-24D | InSOP-24D | InSOP-24D | InSOP-24D | InSOP-24D | InSOP-24D | InSOP-24D | InSOP-24D | InSOP-24D |
| Powigan | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Product Family | InnoSwitch4-QR | InnoSwitch4-QR | InnoSwitch4-QR | InnoSwitch4-QR | InnoSwitch4-QR | InnoSwitch4-QR | InnoSwitch4-QR | InnoSwitch4-QR | InnoSwitch4-QR | InnoSwitch4-QR |
| Product Type | IC | IC | IC | IC | IC | IC | IC | IC | IC | IC |
| Programmable Features | Current Limit, Switching Frequency, USB QC Voltage | Current Limit, Switching Frequency, USB QC Voltage | Current Limit, Switching Frequency, USB QC Voltage | Current Limit, Switching Frequency, USB QC Voltage | Current Limit, Switching Frequency, USB QC Voltage | Current Limit, Switching Frequency, USB QC Voltage | Current Limit, Switching Frequency, USB QC Voltage | Current Limit, Switching Frequency, USB QC Voltage | Current Limit, Switching Frequency, USB QC Voltage | Current Limit, Switching Frequency, USB QC Voltage |
| Protection Features | Overtemperature, Open SR FET Detection, Input Undervoltage, Output Short Circuit, Output Overload | Overtemperature, Open SR FET Detection, Input Overvoltage, Input Undervoltage, Output Overvoltage, Output Short Circuit, Output Overload | Overtemperature, Open SR FET Detection, Input Undervoltage, Output Short Circuit, Output Overload | Overtemperature, Open SR FET Detection, Input Overvoltage, Input Undervoltage, Output Short Circuit, Output Overload | Overtemperature, Open SR FET Detection, Input Overvoltage, Input Undervoltage, Output Short Circuit, Output Overload | Overtemperature, Open SR FET Detection, Input Overvoltage, Input Undervoltage, Output Short Circuit, Output Overload | Overtemperature, Open SR FET Detection, Input Undervoltage, Output Short Circuit, Output Overload | Overtemperature, Open SR FET Detection, Input Overvoltage, Input Undervoltage, Output Overvoltage, Output Short Circuit, Output Overload | Overtemperature, Open SR FET Detection, Input Undervoltage, Output Short Circuit, Output Overload | Overtemperature, Open SR FET Detection, Input Overvoltage, Input Undervoltage, Output Short Circuit, Output Overload |
| Secondary Response | Latch Off | Auto-restart | Auto-restart | Latch Off | Latch Off | Auto-restart | Latch Off | Auto-restart | Auto-restart | Latch Off |
| Switching Frequency Max | 140 kHz | 140 kHz | 140 kHz | 140 kHz | 140 kHz | 140 kHz | 140 kHz | 140 kHz | 140 kHz | 140 kHz |
| Topology | Flyback | Flyback | Flyback | Flyback | Flyback | Flyback | Flyback | Flyback | Flyback | Flyback |
| Voltage Output Max | 24 V | 24 V | 24 V | 24 V | 24 V | 24 V | 24 V | 24 V | 24 V | 24 V |
| Voltage Output Min | 3 V | 3 V | 3 V | 3 V | 3 V | 3 V | 3 V | 3 V | 3 V | 3 V |
| Request Quote | Request Quote | Request Quote | Request Quote | Request Quote | Request Quote | Request Quote | Request Quote | Request Quote | Request Quote |
InnoSwitch4-QR Series Applications
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Energy & PowerPower semiconductors, battery management ICs, solar inverter components, and EV charging modules.
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EV & PowertrainBattery management ICs, cell balancing circuits, and high-voltage isolation components for electric vehicles.
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Solar InvertersHigh-efficiency power conversion for photovoltaic systems.
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Automotive Power Management
Base Numbers
| Base Number | Description | Variants | Status | Action |
|---|---|---|---|---|
| INN4274C | INN4274C variants from Power Integrations | 5 MPNs | Active | View Details |
| INN4275C | INN4275C variants from Power Integrations | 5 MPNs | Active | View Details |
| INN4276C | INN4276C variants from Power Integrations | 6 MPNs | Active | View Details |
| INN4277C | INN4277C variants from Power Integrations | 6 MPNs | Active | View Details |
| INN4774C | INN4774C variants from Power Integrations | 6 MPNs | Active | View Details |
| INN4775C | INN4775C variants from Power Integrations | 6 MPNs | Active | View Details |
| INN4776C | INN4776C variants from Power Integrations | 6 MPNs | Active | View Details |
| INN4777C | INN4777C variants from Power Integrations | 6 MPNs | Active | View Details |
Technical Specifications
Compare key InnoSwitch4-QR specifications across available variants. All parameters are typical values at 25 degC unless otherwise noted.
Power Specifications
Output Power
Up to 75W
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 InnoSwitch4-QR series.
The InnoSwitch4-QR is a Power Integrations Quasi-resonant flyback controller with exceptional no-load power consumption. The series includes 46 variants optimized for different application requirements.
The InnoSwitch4-QR series currently includes 46 variants. Each variant may differ in package type, operating specifications, and feature set. Browse the product table above to compare available options.
The InnoSwitch4-QR series is used in TV power supplies, Display power, Appliance controllers, and LED drivers. Contact our applications team for design-in support and recommendation.
Octatronics is an authorized distributor of Power Integrations products including the InnoSwitch4-QR 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 InnoSwitch4-QR series. Small-quantity orders are available for design evaluation, with volume pricing for production runs. Contact our sales team for custom pricing.