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INN4774C-H188

Off-Line CV/CC Flyback Switcher IC with Integrated 750 V PowiGaN Switch, Synchronous Rectification and Quasi-Resonant (QR) Operation

Applications

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

Specifications
Output Power (Max) - Peak, 380V 170.00 W
Output Power (Max) - Continuous, 380V 145.00 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 3.45V
Cable Drop Compensation X
IC Package InSOP-24D
Internal Switch Yes
Over-Temperature Response Latch Off
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
Overtemperature
Open SR FET Detection
Input Overvoltage
Input Undervoltage
Output Short Circuit
Output Overload
Output Profile CC
Topology Flyback
Product Sub-Type PMIC
MSL Rating 3
Secondary Response Latch Off
Operating Mode Quasi-Resonant
Programmable Features
Current Limit
Switching Frequency
USB QC Voltage