DAP013F DAP013 SOP13

DAP013F DAP013 SOP13 

Introduction This document describes the implementation of the DAP013 inside an AC-DC adapter. The DAP013 offers everything to build high performance AC-DC converters or offline adapters. Thanks to a novel valley lockout system, the controller is able to switch inside the drain-source valley and is immune to valley jumping instabilities. When the output load decreases significantly, the controller toggles to a fixed peak current/variable frequency mode that ensures very low standby power consumption. And last, but not least, the DAP013 features the usual protections that help to build cheap and safe power supplies: OVP, OTP, Brown-Out (C and D options), Short-circuit protection (latched for A, C versions and auto-recovery for D, F versions), soft-start, OPP, internal TSD... To summarise, the DAP013 offers the following characteristics: • Quasi-resonant Peak Current-mode Control Operation • Valley Switching Operation with Valley-lockout for Noise-immune Operation • VCO Mode (fixed peak current, variable frequency) in Light Output Load for Improved Standby Dissipation • Internal 5 ms Soft-start • Loss-free Adjustable Over Power Protection • Auto-recovery or Latched Internal Output Short-circuit Protection • Adjustable Timer for Improved Short-circuit Protection • Over-voltage and Over-temperature Protection Inputs • Brown-out Input for C and D Versions • +500 mA / –800 mA Peak Current Source/Sink Capability • Internal Temperature Shutdown • Direct Optocoupler Connection • 3 s Blanking Delay to Ignore Leakage Ringing at Turn-off • Extremely Low No-load Standby Power