The LM5020 high voltage pulse-width-modulation (PWM) controller contains all of the features needed to implement single ended primary power converter topologies. Output voltage regulation is based on current-mode control, which eases the design of loop compensation while providing inherent line feed-forward. The LM5020 includes a high-voltage start-up regulator that operates over a wide input range up to 100V. The PWM controller is designed for high speed capability including an oscillator frequency range to 1MHz and total propagation delays less than 100ns. Additional features include an error amplifier, precision reference, line under-voltage lockout, cycle-by-cycle current limit, slope compensation, softstart, oscillator synchronization capability and thermal shutdown. The controller is available in both MSOP-10 and LLP-10 packages.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | LM5020 100V Current Mode PWM Controller datasheet (Rev. F) | 14 Apr 2006 | |
| Selection guide | Power Management Guide 2018 (Rev. R) | 25 Jun 2018 | ||
| Technical article | Flyback converters: two outputs are better than one | PDF | HTML | 24 Nov 2016 | |
| Technical article | What is behind isolated DC/DC converter voltage regulation? | PDF | HTML | 31 Aug 2015 | |
| User guide | Dual Output Isolated Flyback Design:User Guide | 27 Jan 2012 | ||
| Application note | An Alternative Approach to Higher-Power Boost Converters | 30 Nov 2009 | ||
| White paper | PWM DC-DC Cntrllrs w/Built-In Strt-Up Regs Simp Switch Pwr Supply Design | 01 Oct 2005 |
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100V Current Mode PWM Controller Flyback Evaluation Board
PSEMTHR24EVM-081 is the base board for the TPS23881 and TPS23882 PSE controllers. This board contains 24 2-Pair / 4-Pair ports that can that can be used to send up to 30W/port for IEEE 802.3at applications and up to 90W/port for IEEE 802.3bt applications.
This tool helps a power supply engineer to select the right isolated DC-DC topology based on the specifications. Depending on the topology chosen, the calculator also recommends the right IC for the design.
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| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VSSOP (DGS) | 10 | Ultra Librarian |
| WSON (DPR) | 10 | Ultra Librarian |
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