TOP7078E
Integrated offline switcher with EcoSmart Technology, unleashing up to 440 W output and achieves 92% efficiency in classic flyback architecture
Product Details
The TOPSwitchGaN IC is an integrated switched-mode power supply that extends the maximum output power of a classic flyback converter to 440 W, offering a simpler alternative to complex resonant and LLC topology. It monitors an analog feedback current at the control input to modulate the variable-frequency variable-current control.
The TOPSwitchGaN flyback controller can operate in continuous conduction mode (CCM) or discontinuous conduction mode (DCM). The controller consists of a frequency-jitter oscillator, a current-limit controller, 5 V regulator on the BYPASS pin, BYPASS undervoltage and overvoltage detection circuit, an input-line sensing circuit, current -limit selection circuitry, over-temperature protection, leading-edge blanking, and a PowiGaN power switch.
Product Highlights
Highly Integrated, Compact Footprint
- 90% average efficiency between 20% and 100% load
- Robust 800 V PowiGaN™ switch provides excellent surge withstand
- Switching frequency up to 150 kHz minimizes transformer size
EcoSmart™ – Energy Efficient
- No-load consumption below 50 mW at 230 VAC
- Up to 200 mW output power for 300 mW input at 230 VAC
Reduced Part Count, Design Flexibility
- Frequency jitter and source potential cooling reduces EMI filter size
- Integrated soft-start reduces start-up stress
- Programmable switching frequency increases design flexibility
- Available in surface-mount for PCB cooling and through-hole for heatsink integration
(Click here for information about mounting clips)
Extensive Protection Features
- Output short-circuit, overload, over-current and overvoltage
- Auto-restart limits power delivery to <3% during output short circuit faults
- Line undervoltage (UV) prevents turn-off glitches
- Simple fast AC reset
- Line overvoltage (OV) shutdown increases protection against line surge
- Accurate thermal shutdown with large hysteresis (OTP)
Typical Applications
- Appliances
- Tools, EV chargers
- Industrial power supplies
Specifications
| Output Power (Max) - Open Frame, 230V | 400.00 W |
| Output Power (Max) - Open Frame, Univ | 300.00 W |
| Power - Output (Max, VDC) | 440.00 W |
| Switching Frequency (max) | 150 kHz |
| Breakdown Voltage | 800 V |
| Voltage - Input (Min) | 85 V |
| Voltage - Input (Max) | 265 V |
| Voltage Input (Max, DC) | 400.00V |
| Auto-Restart & Overvoltage Response | Auto-restart |
| IC Package | eSIP-7C |
| Internal Switch | Yes |
| Mounting Type | Through Hole |
| Over-Temperature Response | Hysteretic |
| PowiGaN? | Yes |
| Temperature - Operating (Min) | -40 °C |
| Temperature - Operating (Max) | 150 °C |
| Control Scheme | Secondary-side |
| Control Features |
Selectable Current Limit
Frequency Jittering
Programmable Switching Frequency
Soft Start
|
| Protection Features |
Input Overvoltage
Input Undervoltage
Output Overvoltage
Output Short Circuit
Thermal Foldback
|
| Output Profile | CV |
| Topology | Flyback |
| Product Sub-Type | PMIC |
