NCP1631PFCGEVB: Interleaved PFC Evaluation Board

The NCP1631 is a controller for use in 2-phase interleaved power factor correction pre-converters. Interleaving consists of paralleling two small stages in lieu of a single big stage. This approach has several merits like ease of implementation, ability to use smaller components, and better distribution of heating. These attributes make the interleaved PFC topology attractive to slim form factor applications such as flat panel TVs and ultra-slim notebook adapters. Interleaving can also extend the power range of Critical Conduction Mode, which is an efficient and cost-effective (no need for low trr diodes) operating mode. The NCP1631 operates in Frequency Clamped Critical Conduction mode (FcCrM). The circuit utilizes frequency foldback to linearly decay the clamping frequency as a function of power. As a result, the NCP1631 provides optimized efficiency across the load range. In addition, the NCP1631 drivers exhibit a 180 phase shift for a significantly reduced current ripple, which lowers EMI and reduces the rms current in the bulk capacitor. The NCP1631 incorporates all the features necessary for building robust and compact interleaved PFC stages, with a minimum of external components. Available in SOIC-16 package.

评估/开发工具信息
产品状况Compliance简短说明所用产品
NCP1631PFCGEVBActivePb-freeInterleaved PFC Evaluation BoardNCP1631DR2G
技术文档
类型文档标题文档编号/大小修订号
Eval Board: BOMNCP1631PFCGEVB Bill of Materials ROHS CompliantNCP1631PFCGEVB_BOM_ROHS.PDF - 86 KB3
Eval Board: GerberNCP1631PFCGEVB Gerber Layout Files (Zip Format)NCP1631PFCGEVB_GERBER.ZIP - 107.0 KB0
Eval Board: SchematicNCP1631PFCGEVB SchematicNCP1631PFCGEVB_SCHEMATIC.PDF - 229.0 KB0
Eval Board: Test ProcedureNCP1631PFCGEVB Test ProcedureNCP1631PFCGEVB_TEST_PROCEDURE.PDF - 391.0 KB1
Eval Board: ManualNCP1631PFCGEVB ManualEVBUM2163/D - 482.0 KB2
VideoInterleaved Power Factor Correction Evaluation Board - NCP1631PFCGEVB Test ProcedureWVD17508/D
NCP1631PFCGEVB BOM ROHS NCP1631PFCGEVB
NCP1631PFCGEVB GERBER NCP1631PFCGEVB
NCP1631PFCGEVB SCHEMATIC NCP1631PFCGEVB
NCP1631PFCGEVB TEST PROCEDURE NCP1631PFCGEVB
EVBUM2163/D - 482 NCP1631PFCGEVB
NCP1631PFCGEVB