4.5 V to 60 V Wide-Input Synchronous PWM Buck Controller - TPS40170

TPS40170 (ACTIVE)

4.5 V to 60 V Wide-Input Synchronous PWM Buck Controller

 

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Description

TPS40170 is a full-featured, synchronous PWM buck controller that operates at an input voltage between 4.5 V and 60 V and is optimized for high-power density, high-reliability DC-DC converter applications. The controller implements voltage-mode control with input voltage feed-forward compensation that enables instant response to input voltage change. The switching frequency is programmable from 100 kHz to 600 kHz.

The TPS40170 has a complete set of system protection and monitoring features such as programmable undervoltage lockout (UVLO), programmable overcurrent protection (OCP) by sensing the low-side FET, selectable short-circuit protection (SCP) by sensing the high-side FET and thermal shutdown. The ENABLE pin allows for system shutdown in a low-current (1 µA typical) mode. The controller supports pre-biased output, provides an open-drain PGOOD signal, and has closed-loop soft-start, output voltage tracking and adaptive dead-time control.

TPS40170 provides accurate output voltage regulation through 1% ensured accuracy. Additionally, the controller implements a novel scheme of bi-directional synchronization with one controller acting as the master and other downstream controllers acting as slaves synchronized to the master in-phase or 180° out-of-phase. Slave controllers can be synchronized to an external clock within ±30% of the free-running switching frequency.

Features

  • Wide Input Voltage Range from 4.5 V to 60 V
  • 600 mV Reference Voltage with 1% Accuracy
  • Programmable UVLO and Hysteresis
  • Voltage Mode Control With Voltage Feed Forward
  • Programmable Frequency Between 100 kHz and 600 kHz
  • Bi-directional -Frequency Synchronization With Master/Slave Option
  • Low-side FET Sensing Overcurrent Protection and High-Side FET Sensing Short-Circuit Protection With Integrated Thermal Compensation
  • Programmable Closed Loop Soft-Start
  • Supports Pre-Biased Outputs
  • Thermal Shutdown at 165°C with Hysteresis
  • Voltage Tracking
  • Powergood
  • ENABLE with 1-µA Low Current Shutdown
  • 8.0-V and 3.3-V LDO Output
  • Integrated Bootstrap Diode
  • 20-Pin 3.5 mm × 4.5 mm VQFN (RGY) Package
  • Create a Custom Design Using the TPS40170 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
TPS40170 LM25116 LM25117 LM25141 LM25145 LM3150 LM5116 LM5117 LM5141 LM5145 TPS40200
4.5    6    4.5    3.8    6    6    6    5.5    3.8    6    4.5   
60    42    42    42    42    42    100    65    65    75    52   
0.6    1.215    0.8    1.5    0.8    0.6    1.215    0.8    1.5    0.8    0.7   
57    36    41    15    40    40    80    62    15    60    46   
20    20    20    20    30    12    20    20    20    30    3   
1    1    1    1    1    1    1    1    1    1    1   
1    1    1    1    1    1    1    1    1    1    1   
100    50    50    350    100    200    50    50    350    100    35   
600    1000    750    2600    1000    1000    1000    750    2600    1000    500   
4.5    4.6    4.8    0.035    1.8    3.5    4.6    4.8    0.035    1.5    1.5   
Enable
Frequency Synchronization
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Tracking   
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
Spread Spectrum
Synchronous Rectification
UVLO Fixed   
Adjustable Current Limit
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Tracking
UVLO Adjustable   
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
UVLO Adjustable   
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
Spread Spectrum
Synchronous Rectification
UVLO Fixed   
Adjustable Current Limit
Enable
Frequency Synchronization
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Tracking
UVLO Adjustable   
Frequency Synchronization   
95    98    98    99    99    96    98    98    99    99    90   
-40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 150    -40 to 125    -40 to 125    -40 to 125    -40 to 85   
Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog   
VQFN    HTSSOP    HTSSOP
WQFN   
VQFN    VQFN    HTSSOP    HTSSOP    HTSSOP
WQFN   
VQFN    VQFN    SOIC
SON   
Voltage Mode    Current Mode    Current Mode    Current Mode    Voltage Mode    COT with emulated ripple      Current Mode    Current Mode    Voltage Mode    Voltage Mode   

Other qualified versions of TPS40170

Version Part Number Definition
Automotive TPS40170-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects
Enhanced Product TPS40170-EP Supports Defense, Aerospace and Medical Applications
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WEBENCH® Designer TPS40170

  Min   Max Range
Vin  V 4.5 to 60.0V
Vout  V 0.6 to 50.0V
Iout  A ≤ 25A
Ambient Temp  °C -40 to 125°C


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