LM3150 6V to 42V Synchronous Step-Down Controller with Adjustable Output Voltage | TI.com

LM3150 (ACTIVE) 6V to 42V Synchronous Step-Down Controller with Adjustable Output Voltage

 

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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

New!
WEBENCH® Power Designer is now even easier to use. Try it now.

WEBENCH® Designer LM3150

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

Parametrics

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Part number Order 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 Type Control mode
LM3150 Order now 6     42     0.6     40     12     1     1     200     1000     3.5     Adjustable Current Limit
Enable
Frequency Synchronization
Pre-Bias Start-Up
Synchronous Rectification
UVLO Adjustable    
96     -40 to 125     Catalog     HTSSOP | 14     Controller     COT with emulated ripple    
LM25116 Order now 6     42     1.215     36     20     1     1     50     1000     4.6     Adjustable Current Limit
Enable
Frequency Synchronization
Light Load Efficiency
Synchronous Rectification    
98     -40 to 125     Catalog     HTSSOP | 20     Controller     Current Mode    
LM25117 Order now 4.5     42     0.8     41     20     1     1     50     750     4.8     Adjustable Current Limit
Enable
Frequency Synchronization
Light Load Efficiency
Synchronous Rectification
Tracking
UVLO Adjustable    
98     -40 to 125     Catalog     HTSSOP | 20
WQFN | 24    
Controller     Current Mode    
LM25145 Order now 6     42     0.8     40     30     1     1     100     1000     1.8     Adjustable Current Limit
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Tracking
UVLO Adjustable    
99     -40 to 125     Catalog     VQFN | 20     Controller     Voltage Mode    
LM3151 Order now 6     42     3.3     3.3     12     1     1     250     250     3.6