INN4274C-H181
Off-Line CV/CC Flyback Switcher IC with Integrated 750 V PowiGaN Switch, Synchronous Rectification and Quasi-Resonant (QR) Operation
Product Details
The InnoSwitch™4-QR family of ICs dramatically improve the efficiency of flyback power converters, particularly those requiring a compact form-factor. The InnoSwitch4-QR family incorporates primary and secondary controllers, PowiGaN power switch and safety-rated feedback (FluxLink) into a single IC.
The InnoSwitch4-QR IC also incorporates multiple protection features including output overvoltage and over-current limiting, and overtemperature shutdown. Devices are available that support combinations of latching and auto-restart protection modes typically required for applications such as chargers, adapters, consumer electronics and industrial systems.
Product Highlights
Highly Integrated, Compact Footprint
- Quasi-Resonant (QR) operation for high efficiency
- Robust 750 V PowiGaN™ primary switch
- Steady-state switching frequency up to 155 kHz minimizes transformer size
- Synchronous rectification driver and secondary-side sensing
- Integrated FluxLink™, HIPOT-isolated, feedback link
- Precise CV/CC accuracy, independent of external components
- Accurate, adjustable output current sense using external sense resistor
EcoSmart – Energy Efficient
- Up to 95% efficient
- Less than 30 mW no-load consumption including line sense
Advanced Protection / Safety Features
- Variable output voltage, constant current profiles
- Auto-restart or latching fault response for output OVP/UVP
- Multiple output UV fault thresholds
- Latching or hysteretic primary over-temperature protection
Optional Features
- Open SR FET-gate detection
- Fast input line UV/OV protection
- Output overvoltage and undervoltage protection
- Output over-current protection
- Over-temperature protection (OTP)
Full Safety and Regulatory Compliance
- Reinforced isolation >4000 VAC
- 100% production HIPOT testing
- UL1577 isolation voltage 4000 VAC (max), TUV (EN62368-1), CQC (GB4943.1) safety approved
- Excellent noise immunity enables designs that achieve class “A” performance criteria for EN61000-4 suite; EN61000-4-2, 4-3 (30 V/m), 4-4, 4-5, 4-6, 4-8 (100 A/m) and 4-9 (1000 A/m)
Green Package
- Halogen free and RoHS compliant
Specifications
| Output Power (Max) - Open Frame, 230V | 90.00 W |
| Output Power (Max) - Enclosed, 230V | 85.00 W |
| Output Power (Max) - Enclosed, Univ | 65.00 W |
| Output Power (Max) - Open Frame, Univ | 80.00 W |
| Switching Frequency (max) | 140 kHz |
| Breakdown Voltage | 750 V |
| Voltage - Output (Min) | 3.00 V |
| Voltage - Output (Max) | 24.00 V |
| Voltage - Input (Min) | 85 V |
| Voltage - Input (Max) | 265 V |
| Auto-Restart & Overvoltage Response | Auto-restart |
| Auto-Restart Threshold | 63% |
| Cable Drop Compensation | X |
| IC Package | InSOP-24D |
| Internal Switch | Yes |
| Over-Temperature Response | Hysteretic |
| PowiGaN? | Yes |
| Temperature - Operating (Min) | -40 °C |
| Temperature - Operating (Max) | 150 °C |
| Control Scheme | Fluxlink |
| Control Features |
Synchronous Rectification
Cable Drop Compensation
Frequency Jittering
Soft Start
Auto-Restart/Latching Fault Response
|
| Protection Features |
Input Overvoltage
Input Undervoltage
Open SR FET Detection
Output Overload
Output Overvoltage
Output Short Circuit
Overtemperature
|
| Output Profile | CC |
| Topology | Flyback |
| Product Sub-Type | PMIC |
| MSL Rating | 3 |
| Secondary Response | Auto-restart |
| Operating Mode | Quasi-Resonant |
| Programmable Features |
Current Limit
Switching Frequency
USB QC Voltage
|
