TPS54062 Synchronous Step-Down Converter

By Texas Instruments 73

TPS54062 Synchronous Step-Down Converter

Texas Instruments' TPS54062 device is a 60 V, 50 mA, synchronous step-down converter with integrated high side and low side MOSFETs. Current mode control provides simple external compensation and flexible component selection. The non switching supply current is 89 µA. Using the enable pin, shutdown supply current is reduced to 1.7 µA. Under voltage lockout is internally set at 4.5 V, but can be increased using the accurate enable pin threshold. The output voltage startup ramp is controlled by the internal slow start time. Adjustable switching frequency range allows efficiency and external component size to be optimized. Frequency fold back and thermal shutdown protects the part during an overload condition.

  • Integrated high side and low side MOSFET
  • Peak current mode control
  • 89 µA (typical) operating quiescent current
  • 100 kHz to 400 kHz switching frequency
  • Stable with ceramic output capacitors or low cost aluminum electrolytic
  • Synchronizes to external clock
  • Internal slow start
  • 0.8 V ±2% voltage reference
  • Cycle-by-cycle current limit, thermal and frequency fold back protection
  • Low power standby or bias voltage supplies
  • 4 mA to 20 mA current-loop powered sensors
  • Industrial process control, metering, and security systems
  • High voltage linear regulator replacement


  • High efficiency with more than 20 mm² board space savings; no external diode needed
  • Synchronizes to clock to reduce noise
  • 25°C more thermal headroom than similar integrated synchronous competitors
  • Improves light load efficiency for longer battery life