INN3949CQ
CV/CC QR Flyback Switcher IC with Integrated 750 V Silicon, 900 V Silicon, 900 V GaN and 1700 V SiC Switch and FluxLink Feedback for Automotive Applications
Product Details
The InnoSwitch3-AQ family of ICs dramatically simplifies the design and manufacture of flyback power converters, particularly those requiring high efficiency and/or compact size. The InnoSwitch3-AQ family combines primary and secondary controllers and safety-rated feedback into a single IC allowing accurate output voltage regulation even with wide input voltage range of 30 VDC to 1000 VDC.
InnoSwitch3-AQ family devices incorporate multiple protection features including line over and undervoltage protection, output overvoltage and over-current limiting, and over-temperature shutdown for automotive applications. Device start-up from 30 V makes it ideal for functional safety critical emergency power supplies.
Product Highlights
Highly Integrated, Compact Footprint
- AEC-Q100 qualified
- Up to 95% efficiency across full load range
- Incorporates a multi-mode Quasi-Resonant (QR) / CCM flyback controller, 750 V, 900 V or 1700 V switch and secondary-side sensing
- Integrated FluxLink, HIPOT-isolated, feedback link
- Wide input voltage 30 V to >1000 V
EcoSmart – Energy Efficient
- Less than 15 mW no-load including line sense
- Easily meets all global energy efficiency regulations
- Low heat dissipation
Advanced Protection / Safety Features
- Auto-restart fault response for output overvoltage and over-current
- Accurate programmable output over-current threshold
- Programmable input undervoltage
Full Safety and Regulatory Compliance
- Fab, assembly and test site are IATF16949 certified
- Reinforced isolation per IEC60664-1
- Withstand isolation voltage >4000 VRMS
- 100% production HIPOT testing
- UL1577 isolation voltage 4000 VAC (max), TUV (EN62368), CQC (GB4943.1)
- EN IEC 60747-17 (VDE 0884-17) 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), FMC1278 (RI-115)
Green Package
- Halogen free and RoHS compliant
Applications
- Power supplies for automotive subsystems such as traction inverter emergency power supply (EPS), high-voltage to low-voltage DC to DC converters (APM), battery management system and on-board charger
Specifications
| Power - Output (Max, 30 VDC) | 10.00 W |
| Power - Output (Max, 60 VDC) | 40.00 W |
| Power - Output (Max, 400 VDC) | 70.00 W |
| Power - Output (Max, 800 VDC) | 70.00 W |
| Switching Frequency (min) | 25.00 kHz |
| Switching Frequency (max) | 95 kHz |
| Breakdown Voltage | 1700 V |
| Voltage - Output (Min) | 5.00 V |
| Voltage - Output (Max) | 24.00 V |
| Voltage Input (Max, DC) | 1200.00V |
| Voltage Input (Min, DC) | 40.00V |
| Auto-Restart & Overvoltage Response |
Auto-restart
Latch Off
|
| IC Package | InSOP-24D |
| Internal Switch | Yes |
| Over-Temperature Response | Hysteretic |
| Temperature - Operating (Min) | -40 °C |
| Temperature - Operating (Max) | 150 °C |
| Control Scheme | Fluxlink |
| Control Features |
Adjustable Current & Voltage
Synchronous Rectification
Frequency Jittering
Soft Start
Auto-Restart/Latching Fault Response
|
| Protection Features |
Overtemperature
Open SR FET Detection
Input Undervoltage
Output Overvoltage
Output Short Circuit
Output Overload
|
| Output Profile | CV |
| Topology | Flyback |
| Product Sub-Type | PMIC |
| MSL Rating | 3 |
| Secondary Response |
Auto-restart
Latch Off
|
| Operating Mode | Quasi-Resonant |
| Programmable Features | Switching Frequency |
