Power Factor Controllers | NCP1632A
概览
The NCP1632A integrated a dual MOSFET driver for interleaved PFC applications. Interleaving consists of paralleling two small stages in lieu of a bigger one, more difficult to design. This approach has several merits like the ease of implementation, the use of smaller components or a better distribution of the heating. Also, Interleaving extends the power range of Critical Conduction Mode that is an efficient and cost-effective technique (no need for low trr diodes). In addition, the NCP1632A drivers are 180o phase shifted for a significantly reduced current ripple. Housed in a SOIC16 package, the circuit incorporates all the features necessary for building robust and compact interleaved PFC stages, with a minimum of external components.
- All Off Line Appliance Requiring Power Factor Correction
- SMPS
- Flat panel TVs
- Computer Power Supplies
- LCD TV
- Server power, networking power
- Brown out blanking time 50ms; Pin latch threshold 2.5V
- 180° out of phase operation
- Frequency Clamped Critical conduction Mode (FCCrM) operation
- Frequency foldback at low power
- Integrated Overcurrent protection, Overvoltage protection, UVLO and brown-out protection
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