SIMPLE SWITCHER® CONTROLLER, 42V Synchronous Step-Down - LM3150

LM3150 (ACTIVE)

SIMPLE SWITCHER® CONTROLLER, 42V Synchronous Step-Down

 

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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.

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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Parametrics Compare all products in Buck Controller (External Switch)

 
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Iout (Max) (A)
Regulated Outputs (#)
Number of Phases
Switching Frequency (Min) (kHz)
Switching Frequency (Max) (kHz)
Iq (Typ) (mA)
Features
Duty Cycle (Max) (%)
Operating Temperature Range (C)
Rating
Package Group
Control Mode
LM3150 LM25116 LM25117 LM25145 LM3151 LM3152 LM3153 TPS40200
6    6    4.5    6    6    6    8    4.5   
42    42    42    42    42    33    18    52   
0.6    1.215    0.8    0.8    3.3    3.3    3.3    0.7   
40    36    41    40    3.3    3.3    3.3    46   
12    20    20    30    12    12    12    3   
1    1    1    1    1    1    1    1   
1    1    1    1    1    1    1    1   
200    50    50    100    250    500    750    35   
1000    1000    750    1000    250    500    750    500   
3.5    4.6    4.8    1.8    3.6    3.6    3.6    1.5   
Adjustable Current Limit
Enable
Frequency Synchronization
Pre-Bias Start-Up
Synchronous Rectification
UVLO Adjustable   
Adjustable Current Limit
Enable
Frequency Synchronization
Light Load Efficiency
Synchronous Rectification   
Adjustable Current Limit
Enable
Frequency Synchronization
Light Load Efficiency
Synchronous Rectification
Tracking
UVLO Adjustable   
Adjustable Current Limit
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Tracking
UVLO Adjustable   
Enable
Synchronous Rectification
Tracking   
Enable
Synchronous Rectification
Tracking   
Enable
Synchronous Rectification
Tracking   
Frequency Synchronization   
96    98    98    99    90    81    72    90   
-40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 85   
Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog   
HTSSOP    HTSSOP    HTSSOP
WQFN   
VQFN    HTSSOP    HTSSOP    HTSSOP    SOIC
SON   
COT with emulated ripple    Current Mode    Current Mode    Voltage Mode    COT with emulated ripple    COT with emulated ripple    COT with emulated ripple    Voltage Mode   
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New! Interactive Design
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WEBENCH® Designer LM3150

  Min   Max Range
Vin  V 6.0 to 42.0V
Vout  V 0.6 to 40.0V
Iout  A ≤ 15A
Ambient Temp  °C -40 to 125°C


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