SSC2101S: Power Factor Correction Discontinuous Conduction Mode Controller

These parts are in production but have been determined to be not for new design. This classification indicates that sale of this device is currently restricted to existing customer applications. These devices should not be purchased for new design applications because obsolescence in the near future is probable. Samples are no longer available.

The SSC2101S is a controller IC intended to implement a Discontinuous Conduction Mode (DCM) interleaved Power Factor Correction (PFC) circuit. Using the two-phase interleaved control incorporated in this IC, it is possible to achieve a low cost, high performance PFC system with low input/output ripple currents, low noise, and few external components.

We'll notify you when there are updates to this product. Sign Up
  • Features and BenefitsFeatures and Benefits
  • PackagingPackaging
  • Technical DocsTechnical Docs
  • NewsNews
  • Interleaved Discontinuous Conduction Mode (DCM) operation: low peak current, low ripple current, and low noise; for medium- to high-power applications
  • Constant Voltage Mode control: no auxiliary windings required on inductors because of the built-in arithmetic circuit; achieves a simple PFC system
  • Maximum on-time: 15 µs (typ)
  • Built-in Soft Start function: reduces stress on power devices at startup
  • Built-in High Speed Response (HSR): suppression of output voltage changes during dynamic load transients
  • Error Amplifier reference voltage: 3.5 V (typ)
  • Protection Functions
    • Soft Overvoltage Protection (SOVP): output voltage reduction
    • Output Overvoltage Protection (OVP): gate drive on/off on a pulse-by-pulse basis, with auto-restart
    • Overcurrent Protection (OCP): dual-level OCP, with auto-restart
    • Output Open Loop Detection (OLD): switching operation stop and transition to standby mode
    • Open Terminal Protection (OTP): switching operation stop or output voltage reduction, during open condition on VFB, VIN, or IS terminals
    • Thermal Shutdown (TSD): auto-restart with hysteresis

Application Note: SSC2100 Series Power Factor Correction Discontinuous Conduction Mode Controller

An evaluation board is available for this product. Please contact us for more information.

Evaluation Board

Click the image to view larger
Product Image Functional Block Diagram Evaluation Board Package

Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Part Composition /
RoHS Data
Comments Samples Check
Distributor Stock
SSC2101S 8-lead MSOP -40°C to 125°C Yes View Data Not for new design Contact your
local sales rep
Check Stock

Allegro’s products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of Allegro’s product can reasonably be expected to cause bodily harm.

Copyright © 2017 Allegro MicroSystems, LLC

Sitemap  |  Privacy Policy  |  Contact Webmaster

Follow us on: LinkedIn YouTube Google+ Follow Allegro on Twitter

Careers   |   Contact Sales   |   Home   |   Legal   |   Quality & Environment   |   Request Samples