Product details

Topology Flyback, Boost, Duty cycle (Max) (%) 80 Vin (Max) (V) 15 UVLO thresholds on/off (V) Programmable/1.25V Features Adjustable Switching Frequency, Current Limiting, HV Start-up, Multi-topology, Programmable Max Duty Cycle, Synchronization Pin Operating temperature range (C) -40 to 125 Switching frequency (Max) (kHz) 2000 Rating Catalog Gate drive (Typ) (A) 2.5
Topology Flyback, Boost, Duty cycle (Max) (%) 80 Vin (Max) (V) 15 UVLO thresholds on/off (V) Programmable/1.25V Features Adjustable Switching Frequency, Current Limiting, HV Start-up, Multi-topology, Programmable Max Duty Cycle, Synchronization Pin Operating temperature range (C) -40 to 125 Switching frequency (Max) (kHz) 2000 Rating Catalog Gate drive (Typ) (A) 2.5
TSSOP (PW) 16 22 mm² 5 x 4.4
  • Two Independent PWM Current Mode Controllers
  • Integrated High-Voltage Startup Regulator
  • Compound 2.5-A Main Output Gate Drivers
  • Single Resistor Oscillator Setting to 2 MHz
  • Synchronizable Oscillator
  • Programmable Maximum Duty Cycle
  • Maximum Duty Cycle Fold-Back at High-Line Voltage
  • Adjustable Timer for Hiccup Mode Current Limiting
  • Integrated Slope Compensation
  • Adjustable Line Undervoltage Lockout
  • Independently Adjustable Soft-Start (Each Regulator)
  • Direct Interface with Opto-Coupler Transistor
  • Thermal Shutdown
  • TSSOP 16-Pin Package
  • Two Independent PWM Current Mode Controllers
  • Integrated High-Voltage Startup Regulator
  • Compound 2.5-A Main Output Gate Drivers
  • Single Resistor Oscillator Setting to 2 MHz
  • Synchronizable Oscillator
  • Programmable Maximum Duty Cycle
  • Maximum Duty Cycle Fold-Back at High-Line Voltage
  • Adjustable Timer for Hiccup Mode Current Limiting
  • Integrated Slope Compensation
  • Adjustable Line Undervoltage Lockout
  • Independently Adjustable Soft-Start (Each Regulator)
  • Direct Interface with Opto-Coupler Transistor
  • Thermal Shutdown
  • TSSOP 16-Pin Package

The LM5032 dual current mode PWM controller contains all the features needed to control either two independent forward dc/dc converters or a single high current converter comprised of two interleaved power stages. The two controller channels operate 180° out of phase thereby reducing input ripple current. The LM5032 includes a startup regulator that operates over a wide input range up to 100 V and compound (bipolar + CMOS) gate drivers that provide a robust 2.5-A peak sink current. The adjustable maximum PWM duty cycle reduce stress on the primary side MOSFET switches. Additional features include programmable line undervoltage lockout, cycle-by-cycle current limit, hiccup mode fault operation with adjustable response time, PWM slope compensation, soft-start, and a 2-MHz capable oscillator with synchronization capability.

For all available packages, see the orderable addendum at the end of the datasheet.

The LM5032 dual current mode PWM controller contains all the features needed to control either two independent forward dc/dc converters or a single high current converter comprised of two interleaved power stages. The two controller channels operate 180° out of phase thereby reducing input ripple current. The LM5032 includes a startup regulator that operates over a wide input range up to 100 V and compound (bipolar + CMOS) gate drivers that provide a robust 2.5-A peak sink current. The adjustable maximum PWM duty cycle reduce stress on the primary side MOSFET switches. Additional features include programmable line undervoltage lockout, cycle-by-cycle current limit, hiccup mode fault operation with adjustable response time, PWM slope compensation, soft-start, and a 2-MHz capable oscillator with synchronization capability.

For all available packages, see the orderable addendum at the end of the datasheet.

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Technical documentation

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Type Title Date
* Data sheet LM5032 High-Voltage Dual Interleaved Current Mode Controller datasheet (Rev. B) PDF | HTML 15 Dec 2014
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Technical article Power Tips: How to control multiple loops in a power supply 02 Apr 2015
Application note AN-1820 LM5032 Interleaved Boost Converter (Rev. A) 06 May 2013
EVM User's guide AN-1962 LM5032 Interleaved Boost Evaluation Board (Rev. A) 06 May 2013

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

LM5032EVAL — LM5032 Interleaved Boost Evaluation Board

A two phase interleaved boost implementation for increased output power and reduced ripple.

User guide: PDF
Not available on TI.com
Reference designs

TIDA-00200 — 120V AC 200W, 90% Efficiency, Interleaved Flyback for Battery Charging Applications Reference Design

TIDA-00200 proposes an interleaved flyback topology for battery charger applications that require an output power level of ~200 W with a minimized bill of material. Besides the actual electronic components, the efforts for cooling are a major contributor to the overall design cost. By taking (...)
Design guide: PDF
Schematic: PDF
Package Pins Download
TSSOP (PW) 16 View options

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