InnoSwitch3-Pro Series Family of ICs

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.

 

Figure 1. Typical application

 

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

• PI’s proprietary gallium nitride technology 
• Up to 100 W output without heatsinks
• INN3378, INN3379 and INN3370

 

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, EN62368) 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