Datasheet
Package Availability, Models, Samples & Pricing
General Description
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.
Design Tools
| Title | Size in Kbytes |
Date |
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| Power Reference Design Library |
0 Kbytes |
28-Mar-2006 |
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Reference Designs
| • | LM5020 Reference Design - Flyback Triple Output Converter: 10.8-13.2V Input, 100V @ 35 mA; 36V @ 40 mA; 52V @ 45 mA Outputs | | • | LM5020 Reference Design - Boost Converter, High Output Current: 6-20V Input, 20V @ 5A Output | | • | LM5020 Reference Design - Boost Converter with 39W Output: 12V Input, 26V @ 1.5A Output | | • | LM5020 Reference Design - Buck-Boost Converter, 20W, Negative Voltage to Positive Voltage Output: -48V Input, 13.5V @ 1.5A Output | | • | LM5020 Reference Design - 1 Lumileds LUXEON High Brightness LED, 900 mA with Dimming Control Output | | • | LM5020 Reference Design - Sepic Converter, Wide Input Range: 11.4-28V Input, 18V @ 0.2A Output | | • | RD-136 - LM5020 Reference Design - Dual Output Flyback Converter with isolated outputs of 5V@0.2A and 12V@2.1A. Two LM2736Y's provide an additional output of 3.3V@0.5A and 5V@0.5A |
Application Notes
[Information as of 5-Sep-2008]
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RoHS Compliance Information
