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) 170 Switching frequency (Max) (kHz) 2200 Iq (Typ) (mA) 3.5 Features Enable, Frequency Synchronization, UVLO Adjustable Duty cycle (Max) (%) 90 Type Controller 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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open-in-new Find other Boost controllers (external switch)

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

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

REFERENCE DESIGNS Download
Hold-up time beyond 10 ms using flyback converter and smaller solution size reference design
PMP20565 — This reference design significantly extends the hold-up time beyond 10 ms without bulky output capacitor bank. A 60-V high voltage energy storage capacitor is utilized on the input side. It instantaneously connects to a flyback converter when a line interruption is detected, charges up the input (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Inverting SEPIC reference design for noise sensitive loads
PMP30487 — This reference design is an inverting SEPIC (Cuk) Converter powering 50-W continuous and up to 70-W peak. The used Cuk topology provides continuous currents at input and output, which allows the lowest conducted emissions in both directions.  Compared to an inverting flyback radiated emissions (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Isolated Flyback Power-over-Ethernet Camera Reference Design
PMP20468 — PMP20468 is an isolated flyback converter utilizing the LM5022 controller for Power-over-Ethernet applications. This design has a minimum operating input voltage of 36V, a maximum input voltage of 57V, and an output of 12V @ 2A of load current. Switching frequency is set to 420kHz. A custom Wurth (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Wide Vin High Voltage Isolated Flyback Supply for Industrial Applications Reference Design
PMP20745 — PMP20745 is an isolated flyback converter reference design utilizing the LM5022 for industrial applications. It uses primary side regulation from an auxiliary winding with a resistor divider network to the feedback pin of the LM5022. This design has a minimum operating input voltage of 18V and (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
20W Wide Input Voltage Isolated Flyback Converter Reference Design
PMP20196 — PMP20196 is an isolated flyback converter reference design using the LM5022 controller IC. The design accepts an input voltage of 9VDCin to 150VDCin and provides an output of 5Vout capable of supplying 4A of maximum current to the load. The nominal switching frequency of the design is approximately (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
15W Wide Input Voltage Isolated Flyback Converter Reference Design
PMP20127 — PMP20127 is an isolated flyback converter reference design using the LM5022 controller IC. The design accepts an input voltage of 9VDCin to 125VDCin and provides an output of 5Vout capable of supplying 3A of maximum current to the load. The nominal switching frequency of the design is approximately (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
65V Output High Pulse Current Boost Converter Reference Design
PMP20070 — The PMP20070 reference design is a boost converter designed for high pulse current applications. It delivers 65V output at 420mA average, from a nominal input voltage of either 12V or 24V. This design uses the LM5022 boost controller at a switching frequency of 650 kHz. A resistor and P-channel (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Cost Optimized Industrial Isolated Flyback Reference Design (12V/4A)
PMP20676 — The PMP20676 reference design is an isolated flyback converter for industrial applications utilizing the LM5022 PWM controller.  It accepts an 18V to 30V input and has a 12V/4A output.  Diode rectification is used for low cost while still maintaining good efficiency.
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
110W Industrial POE Isolated Flyback Reference Design
PMP20497 — PMP20497 is an isolated flyback converter utilizing the LM5022 for industrial applications. This design accepts input voltage of 12V. The test report here is 12Vin/~54V out @ 2A of load current.  Switching frequency is set to 100kHz. A custom Pulse transformer is used in this test report for (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
11W SEPIC Converter for Residential Set Top Box Reference Design
PMP20197 — The PMP20197 reference design is a SEPIC converter that operates from 13V - 30Vin and supplies 18.9V @ 0.6A out (11.3W).  This low cost compact design operates at 300KHz with greater than 91.6% full load efficiency (Vin = 24V).  
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Fully Autonomous Single Port Type 2 (30W) PoE PSE Reference Design
PMP20588 — The PMP20588 reference design utilizes the TPS23861 PSE controller to implement a single port Type 2 PoE PSE.  An isolated flyback converter, utilizing the LM5022 current mode PWM controller, accepts a 12Vdc/24Vac input and provides a 55Vdc/600mA output source for the PSE.  It is ideally (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
12V to 60V Input 36W Industrial PoE Isolated Flyback Reference Design
PMP20551 — PMP20551 is an isolated flyback converter utilizing the LM5022 for industrial applications. This design accepts PoE input voltage of 12V to 60V The test report here is tested at 12V out @ 3A of load current.  Switching frequency is set to 100kHz. A custom transformer is used in this test report (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
36W Industrial PoE Isolated Flyback Reference Design
PMP20692 — PMP20692 is an isolated flyback converter utilizing the LM5022 for industrial applications. This design accepts PoE input voltage of 54V ± 10%. The test report here is 54V in ± 10%, 12V out @ 3A of load current.  Switching frequency is set to 250kHz. A custom transformer is used (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
LM5022 Cuk Converter Reference Design
PMP8639 — This converter delivers -36V with 1.5Amax out of an input voltage range of 32V to 40V. Another focus is loop compensation for Cuk topology.
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
9-36V Input, 5V/3A Output Synchronous Flyback Converter Reference Design
PMP10491 — The wide 9-36Vdc input range of this design is well suited for applications operating from 12V/24V dc inputs.  The synchronous rectifier provides excellent efficiency over the full input range.
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Multi-Output Flyback Converter (-24V@.7A)
PMP7848 — This is a flyback converter with an input voltage range of 10.8V-to-14.4Vin and three outputs: 80Vout @ 0.4A, -58Vout @ 0.7A, and -24Vout @ 0.7A
REFERENCE DESIGNS Download
8 to 18Vin 48Vout @ 1A Single-Phase Isolated Flyback Converter Reference Design
PMP7899 PMP7899 is an isolated flyback converter utilizing the LM5022 for industrial applications. This design has a minimum operating input voltage of 8V and a maximum input voltage of 18V. A custom flyback transformer from Coilcraft is used in this design.
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
30 to 350Vin 15Vout @ 1A Isolated Flyback Converter Reference Design
PMP9334 PMP9334 is an isolated Flyback converter utilizing the LM5022 for industrial applications. It uses primary side regulation from an auxiliary winding with a resistor divider network to the Feedback pin of the LM5022. This design has a minimum operating input voltage of 30V and a max rating of 350V.
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
High-Efficiency Isolated Flyback Converter Reference Design for PoE Application
PMP9446 PMP9446 is an Isolated Flyback Converter using the LM5022 controller IC. The design accepts an input voltage of 10Vin to 15Vin (12Vin Nominal) and provides an output of 54Vout capable of supplying 0.75A of continuous current to the load. The design was built on the PMP7899 PCB, which was modified to (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
One Isolated Output Flyback Converter with LM5022 and Planar Transformer
PMP9435 PMP9435 is designed for industrial application for one isolated output 5V6A from input voltage of 18V to 36V, with Flyback converter of LM5022 , and a 8mm planar transformer to achieve low height.
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
18-30VAC Input, 24V/1A Flyback Reference Design
PMP10856 This reference design provides an isolated 24V/1A output from a 24VAC input.  The supply is laid out on a small 1.1" by 2.4" circuit board, and achieves over 85% peak efficiency.
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
18-48VDC Input, 24V/1A Flyback Reference Design
PMP11047 This reference design provides an isolated 24V/1A output from an 18V-48VDC.  The supply is laid out on a small 1.1" by 2.4" circuit board, and achieves over 90% peak efficiency.
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
High Efficiency 12W Flyback Converter Operates at 1MHz Reference Design
PMP9648 This isolated flyback converter operates from an input of 36Vdc - 57Vdc and supplies an output of 12V@1A, while achieving an efficiency of nearly 90% at 1MHz.
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Reverse Power Supply - Eight Inputs One Output Reference Design
PMP10099 This reference design is a power solution for reverse-powered telecom applications. Up to eight isolated inputs provide one common output; the load is shared equally between all active converters.
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
12V Vin Nominal, 50V Vout @ 0.8A Isolated Flyback Converter - Reference Design
PMP7931 PMP7931 is an isolated flyback converter accepting an input voltage of 12Vin +/-10% and providing an isolated 50Vout capable of supplying up to 0.8A of current to the load.
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Two Rail Flyback Converter with LM5022 for Industrial Applications
PMP9436 PMP9436 is designed for industrial applications using a two rail output Flyback converter with LM5022.  Design supports input voltage of 24V, 20% range and 5V 1.5A output1 and 24V 50mA output2.
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
9 to 60Vin 5Vout @ 3A Isolated Flyback Converter Reference Design
PMP9253 An isolated flyback converter accepting an input voltage range of 9Vin to 60Vin and having an output of 5Vout capable of supplying 3A of current to the load.
REFERENCE DESIGNS Download
9 to 60Vin 3.3Vout @ 4.5A Isolated Flyback Converter Reference Design
PMP9282 An isolated flyback converter accepting an input voltage range of 9Vin to 60Vin and having an output of 3.3Vout capable of supplying 4.5A of current to the load.
Design files
REFERENCE DESIGNS Download
300VDCin to 600VDCin; 20Vout @ 1.5A Reference Design
PMP7958 — A high voltage input isolated flyback converter that accepts an input voltage of 300VDCin to 600VDCin and provides an isolated output of 20Vout capable of supplying 1.5A.
Design files
REFERENCE DESIGNS Download
10 - 48V Input, 12V@4A SEPIC using the LM5022
PMP7338 — The PMP7338 reference design uses the LM5022 in a SEPIC configuration to generate 12V@4A. The design offers efficiency up to 90% and small size.
Design files
REFERENCE DESIGNS Download
10 - 28V Input, 12V@2A SEPIC using the LM5022
PMP7305 — The PMP7305 reference design uses the LM5022 in a SEPIC configuration to generate 12V@2A. The design offers efficiency of up to 90% and has a small size.
REFERENCE DESIGNS Download
9V – 50V input to 12V@3A, Sepic Converter
PMP7768 — It is a 36W Sepic converter designed using LM5022. The output is set to 12V and input varies from 9V to 50V. It uses a bootstrap supply to minimize losses in LM5022. It is a current mode controller.
Design files
REFERENCE DESIGNS Download
Non isolated flyback with 30 to 800V input and 20V @ 250mA output
PMP7764 — PMP7764 is a non-isolated flyback converter. The input voltage ranges from 30 – 800V DC. The output is 20V @ 250mA. It has a high voltage hold off circuit.
Design files
REFERENCE DESIGNS Download
High voltage isolated DC/DC converter with 30 to 800V input and 24V @ 250mA output
PMP7763 — PMP7763 is a high voltage isolated DC/DC flyback converter. The input range is 30 – 800V and output is 24V @ 250mA. It has a high voltage hold off circuit. The secondary is open loop with no feedback control for the output. However, there is feedback control for the primary.
Design files
REFERENCE DESIGNS Download
30V-800V input to 21V@1.5A output, High Voltage Flyback Converter
PMP7760 — PMP7760 is a high voltage flyback DC-DC converter with Q100 and D100 qualification. The design includes an external bias supply to withstand 800V. LM5022 used in the circuit has additional features like an error amplifier, precision reference, line under-voltage lockout, cycle-by-cycle current (...)
Design files

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Videos

Power Tips: SEPIC converter operation, Lab demo (Part 2)

A 12V/1A SEPIC reference design is powered up in the lab

Posted: 21-Jan-2016
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