LM5022

ACTIVE

6-60V Wide Vin, current mode boost, SEPIC and Flyback controller

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Product details

Parameters

Vin (Min) (V) 6 Vin (Max) (V) 60 Vout (Min) (V) 1.25 Vout (Max) (V) 300 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 200 Switching frequency (Max) (kHz) 2200 Iq (Typ) (mA) 3.5 Features Enable, Frequency Synchronization, UVLO Adjustable Duty cycle (Max) (%) 90 Rating Catalog Operating temperature range (C) -40 to 125 open-in-new Find other Boost controllers (external switch)

Package | Pins | Size

VSSOP (DGS) 10 9 mm² 3 x 3 open-in-new Find other Boost controllers (external switch)

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.

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Technical documentation

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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

EVALUATION BOARDS Download
document-generic User guide
$49.00
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

SIMULATION MODELS Download
SNVM336B.ZIP (168 KB) - PSpice Model
SIMULATION MODELS Download
SNVM337A.ZIP (58 KB) - PSpice Model
SIMULATION MODELS Download
SNVM447A.TSC (3359 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SNVM448A.ZIP (9 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SNVM449.TSC (144 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SNVM450.TSC (144 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SNVM451A.ZIP (12 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SNVMAF6B.ZIP (4 KB) - PSpice Model
SIMULATION MODELS Download
SNVMAF7A.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SNVMB66.TSC (158 KB) - TINA-TI Reference Design
CALCULATION TOOLS Download
Fly-Buck and Flyback Topology Selector
FLYBUCK-FLYBACK-DESIGN-CALC 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.
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

Many TI reference designs include the LM5022 Use our reference design selection tool to review and identify designs that best match your application and parameters.

CAD/CAE symbols

Package Pins Download
VSSOP (DGS) 10 View options

Ordering & quality

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