High voltage dual Interleaved current mode controller


Product details


Topology Flyback, Forward Control method Current VCC (Min) (V) 8 VCC (Max) (V) 15 Duty cycle (Max) (%) 80 UVLO thresholds on/off (V) Programmable/1.25V Frequency (Max) (kHz) 2000 Operating temperature range (C) -40 to 125 Gate drive (Typ) (A) 2.5 Features Adjustable Switching Frequency, Current Limiting, HV Start-up, Multi-topology, Programmable Max Duty Cycle, Synchronization Pin Rating Catalog open-in-new Find other PWM controllers & resonant controllers

Package | Pins | Size

TSSOP (PW) 16 22 mm² 5 x 4.4 open-in-new Find other PWM controllers & resonant controllers


  • 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
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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
* Datasheet LM5032 High-Voltage Dual Interleaved Current Mode Controller datasheet (Rev. B) Dec. 15, 2014
Selection guides Power Management Guide 2018 (Rev. R) Jun. 25, 2018
Technical articles Power Tips: How to control multiple loops in a power supply Apr. 02, 2015
Application notes AN-1820 LM5032 Interleaved Boost Converter (Rev. A) May 06, 2013
User guides AN-1962 LM5032 Interleaved Boost Evaluation Board (Rev. A) May 06, 2013

Design & development

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Hardware development

document-generic User guide

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

Reference designs

120V AC 200W, 90% Efficiency, Interleaved Flyback for Battery Charging Applications Reference Design
TIDA-00200 The TI Design TIDA-00200 proposes an interleaved flyback topology for battery charger applications that require an output power level of ~200W 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 (...)
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CAD/CAE symbols

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TSSOP (PW) 16 View options

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