The LM5023 is a quasi-resonant pulse width modulated (PWM) controller which contains all of the features needed to implement a highly efficient off-line power supply. The LM5023 uses the transformer auxiliary winding for demagnetization detection to ensure critical conduction mode (CrCM) operation. The LM5023 features a hiccup mode for overcurrent protection with an auto restart to reduce the stress on the power components during an overload. A skip-cycle mode reduces power consumption at light loads for energy conservation applications (ENERGY STAR®, CEPCP, and so forth). The LM5023 also uses the transformer auxiliary winding for output overvoltage protection (OVP); if an OVP fault is detected the LM5023 latches off the controller.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | LM5023 AC-DC Quasi-Resonant Current Mode PWM Controller datasheet (Rev. E) | PDF | HTML | 06 Jan 2016 |
| White paper | Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) | PDF | HTML | 30 Apr 2024 | |
| White paper | Power Electronics in Motor Drives: Where is it? (Rev. A) | 01 Oct 2019 | ||
| Selection guide | Power Management Guide 2018 (Rev. R) | 25 Jun 2018 | ||
| EVM User's guide | Using the UCC24630EVM-636 65-W AC-to-DC Adapter (Rev. B) | 12 Dec 2016 | ||
| More literature | Design review of a 2-kW parallelable power supply module | 17 Aug 2016 | ||
| More literature | Design review of a 2-kW parallelable power supply module (PPT) | 17 Aug 2016 | ||
| More literature | Exposing the Inner Behavior of a Quasi-Resonant Flyback Converter | 29 Oct 2013 | ||
| Test report | PMP8655 Test Results | 11 Oct 2013 | ||
| Application note | LM5023-2EVM Notebook Adapter | 12 Feb 2013 | ||
| Product overview | LM5023 Product Bulletin | 08 Feb 2013 |
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