TPS62136 (ACTIVE)

1MHz High Accuracy 3V to 17V, 4.0A Synchronous Step-Down Converter With Eco-Mode or Forced PWM

 

Description

The TPS62136 and TPS621361 are high efficiency and easy to use synchronous step-down DC-DC converters, based on the DCS-Control™ Topology. The devices wide input voltage range of 3-V to 17-V makes it suitable for multi-cell Li-Ion as well as 12-V intermediate supply rails. The devices provide 4-A continuous output current. The TPS62136 automatically enters Power Save Mode at light loads to maintain high efficiency across the whole load range. With that, the device is well suited for applications that require connected standby performance, like ultra low power computers. With the MODE pin set to low, the switching frequency of the device is adapted automatically based on the input and output voltage. This technique is called Automatic Efficiency Enhancement (AEE™) and maintains high conversion efficiency over the whole operation range. It provides a 1% output voltage accuracy in PWM mode and therefore enables the design of a power supply with high output voltage accuracy.

The device has a typical quiescent current of 18 µA. In shutdown mode the current is typically 1 µA and the output is actively discharged for TPS62136 while the output voltage discharge feature is disabled in TPS621361.

The TPS62136 is available as an adjustable version, packaged in a 3-mm x 2-mm VQFN package.

Features

  • Output Voltage Accuracy ± 1% (PWM mode)
  • Input Voltage Range: 3 V to 17 V
  • Quiescent Current 18 µA Typ
  • Output Voltage from 0.8 V to 12 V
  • Adjustable Soft-Start
  • Forced PWM or PWM/PFM operation
  • Typical switching frequency of 1 MHz in forced PWM
  • Precise ENABLE input allows
    • User-Defined Undervoltage Lockout
    • Exact Sequencing
  • 100% Duty Cycle Mode
  • Automatic Efficiency Enhancement AEE™
  • DCS-Control™ Topology
  • Available with Active Output Discharge
  • Optional HICCUP Overcurrent Protection
  • Power Good Output
  • Available in 3-mm x 2-mm VQFN Package

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Parametrics Compare all products in Buck Converter (Integrated Switch)

 
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Iout (Max) (A)
Regulated Outputs (#)
Switching Frequency (Min) (kHz)
Switching Frequency (Max) (kHz)
Iq (Typ) (mA)
Special Features
Control Mode
Duty Cycle (Max) (%)
Operating Temperature Range (C)
Rating
Package Group
TPS62136 TPS621361 TPS62130 TPS62135 TPS621351 TPS62140 TPS62180
3    3    3    3    3    3    4   
17    17    17    17    17    17    15   
0.8    0.8    0.9    0.8    0.8    0.9    0.9   
12    12    6    12    12    6.3    6   
4    4    3    4    4    2    6   
1    1    1    1    1    1    1   
    1250    2500      1250    1000   
1000    1000    2500    2500      2500    2000   
0.018    0.018    0.017    0.018    0.018    0.017    0.03   
Dynamic Voltage Scaling
Enable
Light Load Efficiency
Output Discharge
Over Current Protection
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Tracking
UVLO Fixed
VID: 2-bit   
Enable
Light Load Efficiency
Over Current Protection
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Tracking
UVLO Fixed
VID: other   
Enable
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Tracking
Voltage Margining   
Enable
Light Load Efficiency
Output Discharge
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Tracking
UVLO Fixed
VID: other   
Enable
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Tracking
UVLO Fixed
VID: other   
Enable
Light Load Efficiency
Output Discharge
Power Good
Synchronous Rectification
Tracking
Voltage Margining   
Enable
Light Load Efficiency
Phase Interleaving
Power Good
Synchronous Rectification   
Constant on-time (COT)    Constant on-time (COT)    Constant on-time (COT)    Constant on-time (COT)    Constant on-time (COT)    Constant on-time (COT)    Current Mode   
100    100    100    100    100    100    100   
-40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125   
Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog   
VQFN-HR    VQFN-HR    VQFN    VQFN-HR    VQFN-HR    VQFN    DSBGA   

WEBENCH® Designer LMR13060

Part Number
  Min   Max Range
Vin  V 3.00 to 17.00V
Vout  V 0.80 to 12.00V
Iout  A ≤ 4.00A
Ambient Temp  °C -40 to 125°C