6-60V Wide Vin, current mode boost, SEPIC and Flyback controller
Product details
Parameters
Package | Pins | Size
Features
- Internal 60-V Start-Up Regulator
- 1-A Peak MOSFET Gate Driver
- VIN Range: 6 V to 60 V (Operates Down to 3 V After Start-Up)
- Duty Cycle Limit of 90%
- Programmable UVLO With Hysteresis
- Cycle-by-Cycle Current Limit
- External Synchronizable (AC-Coupled)
- Single Resistor Oscillator Frequency Set
- Slope Compensation
- Adjustable Soft Start
- 10-Pin VSSOP Package
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Description
The LM5022 device is a high-voltage, low-side, N-channel MOSFET controller ideal for use in boost and SEPIC regulators. It contains all of the features required to implement single-ended primary topologies. Output voltage regulation is based on current-mode control, which eases the design of loop compensation while providing inherent input voltage feedforward. The LM5022 includes a start-up regulator that operates over a wide input range of 6 V to 60 V. The PWM controller is designed for high-speed capability including an oscillator frequency range up to 2.2 MHz and total propagation delays less than 100 ns. Additional features include an error amplifier, precision reference, line undervoltage lockout, cycle-by-cycle current limit, slope compensation, soft start, external synchronization capability, and thermal shutdown. The LM5022 is available in the 10-pin VSSOP package.
Technical documentation
| Type | Title | Date | |
|---|---|---|---|
| * | Datasheet | LM5022 60-V Low-Side Controller for Boost and SEPIC datasheet (Rev. I) | Dec. 22, 2017 |
| Technical articles | How to add overvoltage protection to a synchronous boost controller | Sep. 17, 2018 | |
| Selection guides | Power Management Guide 2018 (Rev. R) | Jun. 25, 2018 | |
| Technical articles | What is behind isolated DC/DC converter voltage regulation? | Aug. 31, 2015 | |
| White papers | How to design boost, SEPIC or flyback regulators with wide VIN power ICs | Jul. 29, 2014 | |
| Application notes | Demystifying Type II and Type III Compensators Using Op-Amp and OTA for DC/DC Co | Jul. 11, 2014 | |
| User guides | AN-1557 LM5022 Evaluation Board (Rev. C) | May 06, 2013 | |
| User guides | AN-1605 LM5022 Boost LED Driver Evaluation Board (Rev. A) | May 06, 2013 | |
| Application notes | AN-1696 Designing a Boost LED Driver Using the LM5022 (Rev. B) | May 06, 2013 | |
| Application notes | AN-1656 Design Challenges of Switching LED Drivers (Rev. A) | May 03, 2013 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
LM5022 60V Low Side Controller for Boost and SEPIC
Features
- Internal 60V Startup Regulator
- 1A Peak MOSFET Gate Driver
- VIN Range 6V to 60V
- Duty Cycle Limit of 90%
- Programmable UVLO with Hysteresis
- Cycle-by-Cycle Current Limit
- External Sychronizable (AC-coupled)
- Single Resistor Oscillator Frequency Set
- Slope Compensation
- Adjustable Soft-start
- MSOP-10 Package
(...)
Design tools & simulation
Features
- Features isolated topologies like Fly-Buck™, Fly-Buck-Boost, DCM and CCM Flyback
- Capability to design up to 6 isolated outputs
- Recommends ICs for desired application design
- Incorporates loop compensation in designs
- Compares efficiency, external component count and transformer currents for every topology (...)
Reference designs
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| VSSOP (DGS) | 10 | View options |
Ordering & quality
Support & training
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