Automotive 5.5V to 75V, 1.2A gate driver, dual-mode PWM controller With Alternating outputs -40-125C


Product details


Topology Full-Bridge, Half-Bridge, Push-Pull Control method Current, Feedforward, Voltage VCC (Min) (V) 8 VCC (Max) (V) 14 Duty cycle (Max) (%) 96 UVLO thresholds on/off (V) Programmable/1.25V Frequency (Max) (kHz) 2000 Operating temperature range (C) -40 to 125 Gate drive (Typ) (A) 1.2 Features Adjustable Switching Frequency, Current Limiting, HV Start-up, Multi-topology, Programmable Max Duty Cycle, Programmable Soft Start, Synchronization Pin Rating Automotive 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


  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: -40°C to +125°C Operating Junction Temperature
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4B
  • Alternating Outputs for Double-Ended Topologies
  • Ultra Wide Input Operating Range from 5.5 V to 75 V
  • Current-Mode or Feed-Forward Voltage-Mode Control
  • Programmable Maximum Duty Cycle Limit
  • 2% Feedback Reference Accuracy
  • High Gain-Bandwidth Error Amplifier
  • Programmable Line Undervoltage Lockout (UVLO) With Adjustable Hysteresis
  • Versatile Dual Mode Overcurrent Protection With Hiccup Delay Timer
  • Programmable Soft-Start
  • Precision 5-V Reference Output
  • Current Sense Leading Edge Blanking
  • Resistor Programmed 2-MHz Capable Oscillator
  • Oscillator Synchronization Capability With Low-Frequency Lockout Protection
  • 16-Pin TSSOP
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The LM25037 PWM controller contains all the features necessary to implement balanced double-ended power converter topologies, such as push-pull, half-bridge and full-bridge. These double-ended topologies allow for higher efficiencies and greater power densities compared to common single-ended topologies such as the flyback and forward. The LM25037 can be configured for either voltage mode or current mode control with minimum external components. Two alternating gate drive outputs are provided, each capable of 1.2-A peak output current. The LM25037 can be configured to operate directly from the input voltage rail over an ultra-wide range of 5.5 V to 75 V. Additional features include programmable maximum duty cycle limit, line undervoltage lockout, cycle-by-cycle current limit and a hiccup mode fault protection with adjustable timeout delay, soft-start and a 2-MHz capable oscillator with synchronization capability, precision reference and thermal shutdown.

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Technical documentation

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Type Title Date
* Datasheet LM25037/-Q1 Dual-Mode PWM Controller With Alternating Outputs datasheet (Rev. E) Jan. 15, 2016
Technical articles Hybrid electric vehicles and electric vehicles need different isolated DC/DCs to win Dec. 27, 2017
Technical articles Before digital control, there were general-purpose PWMs Oct. 19, 2016
User guides AN-1861 LM25037 Evaluation Board (Rev. C) May 05, 2013
Application notes An Alternative Approach to Higher-Power Boost Converters Nov. 30, 2009

Design & development

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

Hardware development

document-generic User guide

The LM25037 evaluation board is designed to provide the design engineer with a fully functional power converter based on push-pull topology to evaluate the LM25037 controller.

  • Input Operating Range: 16 to 32V
  • Output Voltage: 5.0V
  • Output Current: 0 to 10A
  • Measured Efficiency: 88% @ 10A Load and 24V Input
  • Frequency of Operation: 250 kHz
  • Board Size: 3.5x2.25x0.05 inches (4 layers of 2 oz copper)
  • Load Regulation: 2%
  • Line UVLO (14V rising / 11V falling)


Design tools & simulation

SNVM034B.ZIP (133 KB) - PSpice Model

Reference designs

250W Push-Pull Converter Reference Design for Automotive
PMP11186 — The PMP11186 reference design is a non-isolated Push-Pull converter that operates from 6V - 16Vin and supplies +/- 25V@5A out (250W max).  This design operates at 200KHz with a peak efficiency of 88% (Vin = 12V).
document-generic Schematic document-generic User guide
6V-42V Input 12V/5A SEPIC for Automotive Applications
PMP7797 — PMP7797 is a wide-input SEPIC converter designed for automotive applications. This design uses the LM25037Q push-pull controller as an interleaved boost, which incorporates two gate drivers for controlling two sets of MOSFET switches. The input is 12V nominal with a working range of 6V at cold crank (...)

CAD/CAE symbols

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TSSOP (PW) 16 View options

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