3-17V 2.0A Step-Down Converter with 1% accuracy and PFM/Forced-PWM in 2x3QFN

3-17V 2.0A Step-Down Converter with 1% accuracy and PFM/Forced-PWM in 2x3QFN - TPS62148


The TPS62147 and TPS62148 are high efficiency and easy-to-use synchronous step-down DC/DC converters, based on the DCS-Control™ Topology. The wide input voltage range of 3-V to 17-V make them suitable for multi-cell Li-Ion as well as 12-V intermediate supply rails. The devices provide 2-A continuous output current. They automatically enter Power Save Mode at light loads to maintain high efficiency across the whole load range. With that, they are well suited for applications that require connected standby performance, like industrial PC and video surveillance. With the MODE pin set to low, the switching frequency is adapted automatically based on the output current and also on input and output voltage. This technique is called Automatic Efficiency Enhancement (AEE™) and maintains high conversion efficiency over the whole operation range. TPS62147, TPS62148 provide a 1% output voltage accuracy in PWM mode and therefore enable the design of a power supply with high output voltage accuracy. The FSEL pin allows to set a switching frequency in forced PWM mode of 1.25 MHz or 2.5 MHz, respectively.

The typical quiescent current is 18 µA. In shutdown mode the current is typically 1 µA.

The devices are available as an adjustable version, packaged in a 3-mm × 2-mm VQFN package.


  • Output Voltage Accuracy ± 1% over specified TJ range (PWM mode)
  • Input Voltage Range: 3 V to 17 V
  • Quiescent Current 18 µA Typical
  • Output Voltage from 0.8 V to 12 V
  • Adjustable Soft-Start
  • Forced PWM or PWM/PFM operation
  • Switching frequency of 1.25MHz or 2.5 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
  • Active Output Discharge (TPS62148)
  • HICCUP Overcurrent Protection (TPS62147)
  • Power Good Output
  • Available in 2-mm × 3-mm VQFN Package

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WEBENCH® Designer TPS62148

  Min   Max Range
Vin  V 3.0 to 17.0V
Vout  V 0.8 to 12V
Iout  A ≤ 2A
Ambient Temp  °C -40 to 125°C

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