CRD1500-90WLLC
CRD1500-90WLLC Datasheet
Evaluation Modules and Reference Designs<br>• CDB-CS1500- 100W PFC Only<br>• CRD-CS1500-FB 75 W Notebook Adapter
| Part | Datasheet |
|---|---|
CRD1500-90WLLC |
CRD1500-90WLLC (pdf) |
| Related Parts | Information |
|---|---|
CDB1500 |
CDB1500 |
| PDF Datasheet Preview |
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| Power Management CS1500 Digital PFC Controller Ultra high efficiency power factor correction IC CS1500 8-Pin SOIC actual size 5 mm x 5 mm AC Mains IAC CS1500 FB STBY Regulated DC Output DIGITAL TELEVISIONS Notebook Adapters PC Power Supplies Cirrus Logic, Inc. 2901 Via Fortuna Austin, Texas 78746 United States T +1-512-851-4000 Toll-Free +1-800-888-5016 Sales Support North America +1 800-625-4084 Asia Pacific +852 2376-0801 Japan +81 3 5226-7757 Europe/UK +44 90 1628-891-300 O V ER V IEW The CS1500 is a high-performance Variable Frequency Discontinuous Mode, active digital power factor correction PFC controller. It features Cirrus Logic’s EXL Core technology that brings digital energy control innovation which elevates performance and solves system design challenges in power supplies used in notebook adapters, digital TVs and PCs. The unique digital architecture of the CS1500 enables reduced-size EMI filters and eliminates the need for numerous passive components, delivering the lowest PFC system costs available. Variable on-time / variable frequency algorithm is used to achieve close to unity power factor and shaping the EMI noise spectrum, thus reducing the conducted EMI filtering size and cost. The feedback loop is closed through an integrated compensation network within the IC, eliminating the need for additional external components. Protection features such as overvoltage, overpower, open and short circuit protection, overtemperature, and brownout help protect the device during abnormal transient conditions. F EAT U RE S • Ultra High Efficiency • Digital EMI Noise Shaping • Digital Over-Current Protection • Variable Frequency DCM for Light Load Efficiency • Comprehensive On-Chip Protection EXL CORE TECHNOLOGY The EXL Core is a digital technology platform at the heart of Cirrus Logic’s commitment to develop innovative solutions that help our customers cost effectively create smarter, greener energy products Power Management | CS1500 Digital Power Factor Correction CS1500 uses a proprietary digital control algorithm to shape conducted EMI emissions, resulting in significantly reduced EMI filter requirements. Digital EMI Noise Shaping consists of three major components • Variable switching frequency °°The average switching frequency is varied with respect to the line voltage spreading energy over a wide frequency band. °°The switching frequency is highest at the peak of the input voltage which minimizes peak currents • Digital Spread Spectrum °°Shapes colored noise eliminating EMI noise spikes • Peak current amplitude spreading °°Provides additional spreading and further reduces EMI peaks. Key Values • Digital noise shaping dramatically decreases the size and cost of the EMI filter • Variable frequency DCM enables superior efficiency under all load conditions • Low external component count • Comprehensive on-chip protection °°Under Voltage Lockout °°Brownout °°Over Voltage °°Open Loop °°Over Power Evaluation Modules and Reference Designs • CDB-CS1500- 100W PFC Only • CRD-CS1500-FB 75 W Notebook Adapter |
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