Optimized for consumer applications related to audible noise cancellation, the solution extends the benefits of a transition mode, a high, inefficient cost component, potentially higher power ratings than before. Utilizing a natural interleaved technique, the dual-channel operation Masters (i.e., no slave channels) are synchronized to the same frequency. This approach provides intrinsic powerhouse, faster response, and ensures that transition patterns in each channel operate.
Full system-level functions, input undervoltage protection, output overvoltage, open-loop, overload, soft-start, phase fault detection, and thermal shutdown. An additional fail-safe overvoltage protection (OVP) feature prevents an intermediate voltage that, if undetected, could lead to catastrophic short-circuit protection failure.
characteristic
-
Natural interlacing features
- Phase management facilitates easy adherence to light-load efficiency standards
- Fault prevention and overvoltage protection dual paths prevent voltage detection fault output caused by overvoltage
- No sensor current modification simplifies board layout and improves efficiency
-
Inrush current limiting safety:
- Prevents surges when MOSFETs are on
- Eliminates reverse recovery events generated by output rectifiers
-
System features:
- Improvements in audible noise performance
- Soft start overvoltage
- Comprehensive power outage
- Increased efficiency and flexibility over traditional designs, single-phase continuous on-mode (CCM)
-
Input Filter and Output Capacitor Current Elimination:
- Reduced current ripple Higher system reliability and smaller high-capacity capacitors
- Reduce the size of the EMI filter
- Allows the use of low-cost diodes without extensive buffer circuitry
- Improve light load efficiency
- Improved transient response
- Full system-level protection
- 1 - A Source/1.8-A gate driver
parameter
| |
UCC28061 |
| On/off of undervoltage lockout threshold (5) |
12/10 |
| Working power supply (max) (five) |
21 |
| Starting Current (mA) |
0.2 |
| Operating Supply Current (mA) |
5 |
| Vref (V) |
6.0 |
| Vref's Thor (%) |
2 |
| Duty Cycle (Max) (%) |
100 |
| Actual operating frequency (max) (MHz) |
0.5 |
| Pin/Pack |
16SOIC |