DatasheetsPDF.com

C2173

Cambridge Semiconductor
Part Number C2173
Manufacturer Cambridge Semiconductor
Description Primary Side Sensing SMPS Controller
Published Jun 17, 2014
Detailed Description C2173 Datasheet Primary Side Sensing SMPS Controller KEY FEATURES AND ADVANTAGES • Advanced primary sensing control cir...
Datasheet PDF File C2173 PDF File

C2173
C2173

Overview
C2173 Datasheet Primary Side Sensing SMPS Controller KEY FEATURES AND ADVANTAGES • Advanced primary sensing control circuitry achieves accurate voltage and current (CV and CC) regulation • Bipolar junction transistor (BJT) primary switch enables ultra low BOM cost design solutions • Fast start-up performance without additional active components for low BOM cost • Adaptive base and emitter switching extends RBSOA • Less than 30 mW no-load power with less than one second turn-on delay and class leading load-transient performance • Output transient detection (TD) function for very low no-load power applications • Optimised PWM/PFM with quasi resonant switching enables efficiency standards compliance with margin • Frequency dithering algorithm allows EMI compliance with margin • Enables fully compliant solutions for “MoU” universal USB chargers o o Optimised control of the primary switch drive for low EMI and compliance to EN 301 489-34 Inherently low ripple and low EMI enable compliance with the interoperability standard, IEC 62684 C2173 SOT23-6 • Full featured protection includes o Single fault o Output over-voltage and short-circuit o Input under-voltage • Convenient SOT23-6 surface mount package for small size and low cost manufacture APPLICATIONS Universal input mobile phones chargers typically to 8 W, including “universal” USB and all major OEM specifications.
Universal input adapters and standby/auxiliary power supplies typically to 8 W.
+ + + C2173 Q1 BD CS ED Output transient detector circuit Will provide wake up signal AUX FB GND Figure 1: Typical Charger Application Circuit with C2173 Shortform © Cambridge Semiconductor Ltd 2014 Page 1 DS-5706-1403 03-Mar-2014 http://www.
Datasheet4U.
com C2173 Datasheet Primary Side Sensing SMPS Controller BLOCK DIAGRAM Figure 2: C2173 Block Diagram PIN DEFINITIONS AUX During Run mode, power derived from the transformer auxiliary winding is fed to the control circuitry via the AUX pin.
BD ED FB Base drive for BJT.
E...


Similar Datasheet


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site. (Privacy Policy & Contact)