IMX2278F
Off-Line Zero Voltage Switching (ZVS) Flyback Switcher IC with Up to Three CV Outputs or One CV & One CC Output for a Dimmable LED String
Industry-First 1700 V GaN Switch (IMX2353F) Easily Supports 1000 VDC Nominal Input Voltage
Product Details
The InnoMux2-EP IC dramatically improves power conversion efficiency. By independently regulating and protecting each output
the InnoMux-2 family eliminates multiple downstream conversion stages.
InnoMux-2 IC-based designs have low BOM count and small size. The family incorporates both primary and secondary-side controllers, with protection, sense elements and a safety-rated feedback mechanism (FluxLink) into a single IC. The InnoMux-2 IC also includes an LED backlight controller that supports multi-mode dimming making it ideal for monitors, TVs and appliances with lighting or display requirements.
InnoMux2-EP contains enhanced features for maximizing conversion efficiency including quasi-resonant switching in DCM operation, accurate SR control and minimum-threshold-regulation for the LED driver.
The InnoMux family includes the industry's first power devices to feature a 1700 V GaN switch. The high voltage rating achieved by PowiGaN™ technology marks a watershed moment in the advancement of GaN power electronics, making it possible for GaN devices to replace costly silicon carbide (SiC) transistors in applications such as automotive chargers, solar inverters, three-phase meters and other industrial power systems.
Product Highlights
Highly Integrated, Compact Footprint
- Up to 3 independently regulated outputs using a single controller and transformer
- Eliminates post regulators
- Incorporates a multi-mode Quasi-Resonant Discontinuous Conduction Mode (DCM) and Continuous Conduction Mode (CCM) flyback controller, 650 V, 725 V, 750 V or 1700 V power switch, secondary side control and synchronous rectification driver
- Integrated FluxLink™ feedback link eliminates optocouplers
- Excellent transient response: <±5% CV with 100% load step
- Constant Voltage (CV) outputs up to 200 V and up to 200 V for LED drive
EcoSmart™ – Energy Efficient
- PowiGaN technology enables >90% efficient power supplies
- Designs easily meet global energy efficiency regulations
- Proprietary switching algorithm ensures high efficiency across load
- Low dissipation allows PCB cooling – no heat sinks required
Advanced Protection / Safety Features
- Primary sensed output OVP
- Open SR-FET gate detection
- Hysteretic thermal shutdown
- Input voltage monitor with accurate brown-in/brown-out and overvoltage protection
- Overload protection for each output
- LED short / open protection
Full Safety and Regulatory Compliance
- Reinforced isolation
- Isolation voltage >4000 VAC
- 100% production HIPOT tested
- UL1577 and TUV (EN62368) safety testing in progress
- Enables designs required to meet class A performance criteria for EN61000-4 suite of test standards, including 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
| Output Power (Max) - Open Frame, 230V | 77.00 W |
| Output Power (Max) - Open Frame, Univ | 60.00 W |
| Output Power (Max) - Peak, Univ | 94.00 W |
| Switching Frequency (max) | 100 kHz |
| Breakdown Voltage | 750 V |
| Voltage - Input (Min) | 90 V |
| Voltage - Input (Max) | 277 V |
| VLED (Max) | 140 V |
| Auto-Restart & Overvoltage Response | Auto-restart |
| SR MOSFET Driver | Yes |
| IC Package | InSOP-T28B |
| Over-Temperature Response |
Auto-restart
Hysteretic
Latch Off
|
| Output Configuration |
1 CV
1 LED String
|
| PowiGaN? | Yes |
| Temperature - Operating (Min) | -40 °C |
| Temperature - Operating (Max) | 150 °C |
| Control Scheme | Fluxlink |
| Control Features | Dimmable |
| Dimming Interface | PWM |
| Protection Features |
Output Open Loop
Output Overload
Output Overvoltage
Output Short Circuit
Overtemperature
|
| Output Profile | CV/CC |
| Topology | Flyback |
| Product Sub-Type | PMIC |
| MSL Rating | 3 |
| Operating Mode | Zero Voltage Switching |
