The CS1501/CS1601 are high-performance Variable Frequency Discontinuous Mode, active digital power factor correction (PFC) controllers. Featuring Cirrus Logic’s EXL Core™ technology, these chips offer innovative digital energy control capabilities which elevate performance and solve system design challenges in power supplies used in notebook adapters, digital TVs, PCs and LED/fluorescent ballasts.
The unique digital architecture of the CS1501/1601 enables reduced-size EMI filters and eliminates the need for numerous passive components, reducing solution size and delivering low overall PFC system cost. Additionally, the CS1501/1601 beats analog PFC products in efficiency and THD across a full range of load.
| Part | Max fSW (kHz) | Valley Switching | Over-Current Protection | IC Supply Current (mA) | Input Voltage Range (Vac) | Target Applications |  Package |
|---|---|---|---|---|---|---|---|
| CS1501 | 70 | |
|
1.5 | 90 to 265 | DTV, Consumer Electronics & Server/Telecom | 8 SOIC |
| CS1601 | 70 | |
|
1.5 | 90 to 265; 108 to 305 |
LED, HID & Fluorescent Lighting Ballasts | 8 SOIC |
| CS1601H | 100 | |
|
1.7 | 90 to 265; 108 to 305 |
DTV, LED/HID/Fluorescent Lighting Ballasts & Consumer Electronics | 8 SOIC |
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