LM3150

ACTIVE

6V to 42V Synchronous Step-Down Controller with Adjustable Output Voltage

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Product details

Parameters

Vin (Min) (V) 6 Vin (Max) (V) 42 Vout (Min) (V) 0.6 Vout (Max) (V) 40 Iout (Max) (A) 12 Iq (Typ) (mA) 3.5 Switching frequency (Min) (kHz) 200 Switching frequency (Max) (kHz) 1000 Features Adjustable Current Limit, Enable, Frequency Synchronization, Pre-Bias Start-Up, Synchronous Rectification, UVLO Adjustable Operating temperature range (C) -40 to 125 Regulated outputs (#) 1 Number of Phases 1 Rating Catalog open-in-new Find other Buck controllers (external switch)

Package | Pins | Size

HTSSOP (PWP) 14 32 mm² 5 x 6.4 open-in-new Find other Buck controllers (external switch)

Features

  • PowerWise™ Step-Down Controller
  • 6-V to 42-V Wide Input Voltage Range
  • Adjustable Output Voltage Down to 0.6 V
  • Programmable Switching Frequency up to 1 MHz
  • No Loop Compensation Required
  • Fully WEBENCH® Enabled
  • Low External Component Count
  • Constant On-Time (COT) Control
  • Ultra-Fast Transient Response
  • Stable With Low ESR Capacitors
  • Output Voltage PreBias Startup
  • Valley Current Limit
  • Programmable Soft-Start
  • Create a Custom Design Using the LM3150 with the WEBENCH Power Designer
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Description

The LM3150 SIMPLE SWITCHER® controller is an easy-to-use and simplified step-down power controller capable of providing up to 12 A of output current in a typical application. Operating with an input voltage range of 6 V to 42 V, the LM3150 controller features an adjustable output voltage down to 0.6 V. The switching frequency is adjustable up to 1 MHz and the synchronous architecture provides for highly efficient designs. The LM3150 controller employs a constant on-time (COT) architecture with a proprietary emulated ripple mode (ERM) control that allows for the use of low ESR output capacitors, which reduces overall solution size and output voltage ripple. The COT regulation architecture allows for fast transient response and requires no loop compensation, which reduces external component count and reduces design complexity.

Fault protection features such as thermal shutdown, undervoltage lockout, overvoltage protection, short-circuit protection, current limit, and output voltage prebias start-up allow for a reliable and robust solution.

The LM3150 concept provides for an easy-to-use complete design using a minimum number of external components and TI’s WEBENCH online design tool. WEBENCH provides design support for every step of the design process and includes features such as external component calculation with a new MOSFET selector, electrical simulation, thermal simulation, and Build-It boards for prototyping.

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Same functionality but is not pin-for-pin or parametrically equivalent to the compared device:
LM25145 ACTIVE 6V to 42V Synchronous Buck DC-DC Controller With Wide Duty Cycle Range A next-generation solution that provides comparable functionality, smaller solution size and higher efficiency over a 6-V to 42-V operating voltage range.

Technical documentation

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Type Title Date
* Datasheet LM3150 Wide-VIN Synchronous Buck Controller datasheet (Rev. G) Apr. 23, 2015
Selection guides Power Management Guide 2018 (Rev. R) Jun. 25, 2018
Selection guides Control-Mode Quick Reference Guide (Rev. A) Sep. 14, 2017
Technical articles Stop "droning" on about power supply issues: find a solution Nov. 13, 2015
Technical articles New - Edit a schematic created by WEBENCH Mar. 10, 2014
User guides AN-1900 LM3150 Evaluation Boards (Rev. D) May 01, 2013
Application notes AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C) Apr. 23, 2013
Application notes Controlling Output Ripple & Achiev ESR Indep Constant On-Time Reg Designs (Rev. A) Apr. 23, 2013
User guides SIMPLE SWITCHER® Design Guide Apr. 11, 2011

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
$25.00
Description

The LM3150 evaluation boards are designed to provide the design engineer with a fully functional power converter based on Constant On-Time with Emulated Ripple mode control to evaluate the LM3150 and the entire LM315x family of parts. The evaluation board is preconfigured to use the LM3150 with the (...)

Features
  • Switching Frequency: 250 kHz
  • Input Voltage Range: 6V to 42V
  • Output Voltage: 3.3V
  • Output Current: 0A to 10A

 

EVALUATION BOARDS Download
document-generic User guide
$25.00
Description

The LM3150 evaluation boards are designed to provide the design engineer with a fully functional power converter based on Constant On-Time with Emulated Ripple mode control to evaluate the LM3150 and the entire LM315x family of parts. The evaluation board is preconfigured to use the LM3150 with the (...)

Features
  • Switching Frequency: 500 kHz
  • Input Voltage Range: 6V to 24V
  • Output Voltage: 3.3V
  • Output Current: 0A to 10A

 

EVALUATION BOARDS Download
document-generic User guide
$25.00
Description

The LM3150 evaluation boards are designed to provide the design engineer with a fully functional power converter based on Constant On-Time with Emulated Ripple mode control to evaluate the LM3150 and the entire LM315x family of parts. The evaluation board is preconfigured to use the LM3150 with the (...)

Features
  • Switching Frequency: 750 kHz
  • Input Voltage Range: 8V to 17V
  • Output Voltage: 3.3V
  • Output Current: 0A to 10A

 

EVALUATION BOARDS Download
document-generic User guide
$20.00
Description

The LM3152-3.3 demonstration board is a part of the PowerWise® family of SIMPLE SWITCHER® Controllers. It has been designed to balance solution size and performance. The Constant-On-Time (COT) Emulated Ripple Mode (ERM) Control allows for the use of low ESR output capacitors and therefore (...)

Features
  • Easy To Use with Webench and Offline Design Tools
  • No Loop Compensation Required
  • Low Solution Component Count
  • Ultra-Fast Transient Response
  • Low Output Voltage Ripple (32mVpp)
  • 3.3V Fixed Output Voltage
  • Optimized for 10A Average Load Current
  • 95% Peak Efficiency
  • Constant-On-Time with Emulated Ripple Mode (...)

Design tools & simulation

SIMULATION MODELS Download
SNVM059B.ZIP (117 KB) - PSpice Model
SIMULATION MODELS Download
SNVM425A.ZIP (24 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SNVM426A.TSC (143 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SNVM693.TSC (142 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SNVMB62.ZIP (4 KB) - PSpice Model
CALCULATION TOOLS Download

Reference designs

REFERENCE DESIGNS Download
18-VDC - 30-VDC input multiple output flybuck reference design
PMP30502 — This isolated flybuck reference design uses the LM3150 synchronous buck controller to generate one non-isolated output (3.3 V at 5 A) and two isolated outputs (5 V at 100 mA, 5 V at 100 mA) from a DC input (18 VDC - 30 VDC). The design can provide 17.5-W output power. Two additonal linear regulator (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
High Density Efficient Solution for Main Aux as well as Back up Aux Power in Drones
PMP10650 PMP10650 is a high power density 40W Buck Converter design optimized for Wide Vin Drone Design using the LM3150 controller IC (Used for Drone’s Backup Power) and LM53603. The design accepts an input voltage of 7Vin to 36Vin and provides the outputs of 5V@5A for Drone’s Backup power and (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Compact Size Dual 2.5A USB Car Charger Reference Design
PMP9402 PMP9402 is a dual USB car charger. This design utilizes the LM3150, TPS2561 Dual Channel Power Switch and a TPS2513 USB Dedicated Charging Port Controller. This design operates from 6 to 40V in. The output is set to 5V; both channels have a 2.5A current limit. This design has a switching frequency (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
17.5W Dual USB Car Charger Reference Design
PMP9367 PMP9367 is a dual USB car charger reference design intended for use in aftermarket automotive application. This design utilizes the LM3150, TPS2561 Dual Channel Power Switch and a TPS2513 USB Dedicated Charging Port Controller. This design operates from 6 to 40V in. The outputs is set to 5V, channel (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Power Solution for Terasic DE2-115 (Cyclone IV)
PMP10581 The PMP10581 reference design provides all the power supply rails necessary to power Altera’s Cyclone® IV E FPGA. DE2-115 was developed by Terasic and this board is available for purchase through Terasic’s website.
document-generic Schematic document-generic User guide
Design files

CAD/CAE symbols

Package Pins Download
HTSSOP (PWP) 14 View options

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