INN4577F-H342
Digitally Controllable Off-Line CV/CC Flyback Switcher IC with 750 V PowiGaN, Active Clamp Drive and Synchronous Rectification, Uses Stand-alone for Quasi-Resonant Mode
Product Details
The InnoSwitch™4-Pro family of I²Cs substantially reduces the size of power adapters. Switching frequency of up to 140 kHz and a very high level of integration combine to reduce the component volume and PCB board area required by a typical adapter implementation.
InnoSwitch4-Pro interfaces seamlessly with the ClampZero family of active clamp ICs to achieve Zero Voltage Switching in both continuous and discontinuous conduction modes. Alternatively, InnoSwich4-Pro can operate in QR mode using an RCD clamp with the appropriated part number choice.
Overall system efficiency exceeds 95%, allowing designers to eliminate heat sinks, spreaders and potting materials for
thermal management, further reducing size, component cost and manufacturing complexity. The integration of PowiGaN primary switch and controller, isolated feedback and secondary controller with an I²C interface simplifies the development and manufacturing of fully programmable, highly efficient power supplies.
Product Highlights
Highly Integrated, Compact Footprint
- Dual-mode flyback controller
- Zero Voltage Switching (ZVS) when paired with ClampZero™ active clamp IC
- Quasi-Resonant (QR)
- Unique control algorithm to enable ZVS in both DCM and CCM
- Robust 750 V PowiGaN™ primary switch
- Steady-state switching frequency up to 140 kHz minimizes transformer size
- Synchronous rectification driver and secondary-side sensing
- Integrated FluxLink™, HIPOT-isolated, feedback link
- Drives low-cost N-channel FET series load switch
- Integrated 3.6 V supply for external MCU
Digitally Controlled via I²C Interface
- Precise CV/CC/CP Control
- Dynamic adjustment of power supply voltage and current
- Selectable DCM-only operation to reduce SR FET voltage stress
- Optimized command set to reduce I²C traffic
- Telemetry for power supply status and fault monitoring
EcoSmart™ – Energy Efficient
- Efficiency up to 95%
- Less than 30 mW no-load including line sense and MCU
Advanced Protection / Safety Features
- Series load switch short-circuit protection
- Disable output fault response
- Fast input line UV/OV protection
- Programmable Output OV/UV fault detection and response
- Open SR FET gate detection
- Hysteretic thermal shutdown
- Programmable watchdog timer for system faults
Full Safety and Regulatory Compliance
- Reinforced isolation >4000 VAC
- 100% production HIPOT testing
- UL1577 isolation voltage 4000 VAC and TUV (EN62368) safety approved
Green Package
- Halogen free and RoHS compliant
Applications
- High density power adapters
- Multiprotocol adapters including USB PD + PPS, QC, VOOC, VFC, SCP
- Direct-charge mobile device chargers
- Multi-chemistry tool and general purpose battery chargers
- Adjustable CV and CC LED ballast
Specifications
| Output Power (Max) - Open Frame, 230V | 145.00 W |
| Output Power (Max) - Enclosed, 230V | 125.00 W |
| Output Power (Max) - Enclosed, Univ | 90.00 W |
| Output Power (Max) - Open Frame, Univ | 135.00 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
Latch Off
|
| Cable Drop Compensation | X |
| IC Package | InSOP-T28D |
| Internal Switch | Yes |
| Over-Temperature Response | Hysteretic |
| PowiGaN? | Yes |
| Temperature - Operating (Min) | -40 °C |
| Temperature - Operating (Max) | 150 °C |
| Control Scheme | Fluxlink |
| Control Features |
Adjustable Current & Voltage
Qausi-Resonant/CCM
Synchronous Rectification
Cable Drop Compensation
Selectable Current Limit
Frequency Jittering
Programmable Switching Frequency
Soft Start
Auto-Restart/Latching Fault Response
USB Quick Charge Voltage Adjustment
|
| Protection Features |
Input Overvoltage
Input Undervoltage
Open SR FET Detection
Output Overload
Output Overvoltage
Output Short Circuit
Overtemperature
|
| Output Profile | CV/CC |
| Topology | Flyback |
| Product Sub-Type | PMIC |
| MSL Rating | 3 |
| Secondary Response |
Auto-restart
Latch Off
|
