UCC24630 65W AC/DC Adapter


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This is a high efficiency 65W AC/DC design using UCC24630 Synchronous Rectification Controller for a Universal input (85Vac to 265Vac) to 19.5V @3.33A output exceeding CoC-5 Tier2 and DOE Level VI performance requirements for external power supplies.

  • 91.49% @115V AC, 89.81% @230V AC 4-point average efficiency 
  • 83.14% @120V AC, 82.24% @230V AC 10% load efficiency
  • 59mW No load Power consumption at 230V AC
  • Fast turn-on time
  • <80mV output voltage ripple
  • AC line input UVLO protection
SR & load share controllers
UCC24630 Synchronous rectifier controller With Ultra Low Standby current


Flyback controllers
LM5023 AC-DC quasi-Resonant current mode PWM controller UCC28710 Constant-voltage, constant-current PWM with PSR, valley switching & Programmable cable compensation UCC28740 Constant-Voltage, Constant-Current (CVCC) Flyback controller with Secondary Side Regulation (SSR)
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Evaluation board

UCC24630EVM-636 — UCC24630 65W AC/DC Adapter

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Technical documentation

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Type Title Date
Certificate UCC24630EVM-636 EU Declaration of Conformity (DoC) 02 Jan 2019
EVM User's guide Using the UCC24630EVM-636 65-W AC-to-DC Adapter (Rev. B) 12 Dec 2016

Related design resources

Hardware development

LM5023-2NBEVM LM5023 19V 65W Notebook Adapter Evaluation Module UCC28740EVM-525 UCC28740EVM-525 Evaluation Module

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