LM3150 SIMPLE SWITCHER® CONTROLLER, 42V Synchronous Step-Down | TI.com

LM3150 (ACTIVE)

SIMPLE SWITCHER® CONTROLLER, 42V Synchronous Step-Down

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

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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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