Digitally Controllable Off-Line CV/CC QR Flyback Switcher IC with Integrated High-Voltage Switch, Synchronous Rectification and FluxLink Feedback
Data Sheets
InnoSwitch3-Pro Data Sheet
Product Details
The InnoSwitch™3-Pro series family of ICs dramatically simplifies the development and manufacturing of fully programmable, highly efficient power supplies, particularly those in compact enclosures. The universal I²C interface enables dynamic control of output voltage and current along with many configurable features. Telemetry provides reporting of programmed features and fault modes.
InnoSwitch3-Pro devices are ideal for AC/DC power supply applications where fine (10 mV, 50 mA) output voltage and current adjustment are necessary. Typical implementations comprise a system microprocessor or dedicated microcontroller with an I²C port that is used to configure, control and supervise operation of the power sub-system. The uVCC pin provides bias to the microprocessor in standalone implementations such as USB PD adapters and chargers.
Product Highlights
Digitally Controlled via I²C Interface
- Dynamic adjustment of power supply voltage and current
- Telemetry status read-back with processor interrupt
- Comprehensive set of configurable features
- PowiGaN™ technology – up to 100 W without heatsinks (INN3379C and INN3370C)
Highly Integrated, Compact Footprint
- Multi-mode Quasi-Resonant (QR) / CCM flyback controller, high-voltage switch, secondary-side sensing and synchronous rectifier driver
- Optimized efficiency across line and load range
- Integrated FluxLink™, HIPOT-isolated, feedback link
- Instantaneous transient response
- Drives low-cost N-channel FET series load switch
- Integrated 3.6 V supply for external MCU
- 4.7 Ω ultra-fast SR pull-down resistance (Avaliable with H302 parts)
EcoSmart™ – Energy Efficient
- Less than 30 mW no-load including line sense and MCU
- Easily meets all global energy efficiency regulations
- Low heat dissipation
Advanced Protection / Safety Features
- Input voltage monitor with accurate brown-in/brown-out and overvoltage protection
- Output OV/UV fault detection with independently configured responses
- Open SR FET gate detection
- Hysteretic thermal shutdown
- Programmable watchdog timer functionality for system faults
- Telemetry for power supply status and fault monitoring
- IS pin short/output short-circuit fault detection (H302 parts)
Full Safety and Regulatory Compliance
- Reinforced insulation
- Isolation voltage >4000 VAC
- 100% production HIPOT compliance testing
- UL1577 and TUV (EN60950) safety approved
Green Package
- Halogen free and RoHS compliant
Applications
- High efficiency USB PD 3.0 + PPS/QCA adapters
- Multiprotocol adapters including QuickCharge, AFC, FCP, SCP
- Direct-charge mobile device chargers
- Multi-chemistry tool and general purpose battery chargers
- Adjustable CV and CC LED ballast
Applications
Power Table
| Output Power Table1 | ||||
|---|---|---|---|---|
Product4,5 | 230 VAC ± 15% | 85-265 VAC | ||
Adapter2 | Open Frame3 | Adapter2 | Open Frame3 | |
INN3365C/3375C-H30X | 25 W | 30 W | 22 W | 25 W |
INN3366C/3376C-H30X | 35 W | 40 W | 27 W | 36 W |
INN3377C-H30X | 40 W | 45 W | 36 W | 40 W |
INN3367C-H30X | 45 W | 50 W | 40 W | 45 W |
INN3368C-H30X | 55 W | 65 W | 50 W | 55 W |
INN3378C-H3026 | 70 W | 75 W | 55 W | 65 W |
INN3379C-H3026 | 80 W | 85 W | 65 W | 75 W |
INN3370C-H3026 | 90 W | 100 W | 75 W | 85 W |
Notes:
- Max output power is dependent on the design, with maximum IC package temperature kept <125 °C
- Minimum continuous power in a typical non-ventilated enclosed typical size adapter measured at 40 °C ambient
- Minimum peak power capability
- C Package: InSOP-24D
- 650 V Switch (INN336x); 725 V Switch (INN3375-7); 750 V Switch (INN3378, INN3379, INN3370)
- Incorporates PowiGaN™ technology
InnoSwitch3-Pro Feature Codes
InnoSwitch3-Pro ICs are highly configurable, and require a "Feature Code" to specify all of the configurable characteristics, such as the IS Pin Short/Output Short-Circuit Fault Detection, SR Pull-Down Resistance, and others. Feature Codes consist of the letter "H" followed by three numbers and are added to the end of the base part number. A Feature Code is required when ordering parts (e.g., INN3365C-H302).
The tables below provide a list of the characteristics of the Feature Codes, and the parts available with that Feature Code. Please use these to determine which InnoSwitch3-Pro part is the best fit for your application.
| Feature Code | IS Pin Short/Output Short-Circuit Fault Detection | SR Pull-Down Resistance |
|---|---|---|
| H302¹ | Enabed | 4.7 Ω (Fast) |
| H301² | Disabled | 12.7 Ω (Slow) |
Notes:
- Recommended for all new designs
- Not available for INN3378, INN3379 and INN3370
Product Documents
Articles and Whitepapers
Design Examples
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