TPS6218x Step-Down Converters

TPS6218x Step-Down Converters

Texas Instruments' TPS6218x is a synchronous dual-phase step-down DC-DC converter for low-profile power rails. It operates with two identical, current balanced phases that are peak current controlled enabling use in height limited applications.

With a wide operating input voltage range of 4 to 15 V, the device is ideally suited for systems powered from multi-cell Li-Ion batteries or 12 V rails. The output current of 6 A is continuously provided by two phases of 3 A each, allowing the use of low-profile external components. The phases operate out of phase, reducing switching noise significantly.

The TPS6218x automatically enters Power Save Mode to maintain high efficiency down to very light loads. It also incorporates an Automatic Efficiency Enhancement (AEE™) for the entire duty cycle range.

Features  
  • Dual-phase balanced peak current mode
  • Input voltage range: 4 to 15 V
  • Output voltage range: 0.9 to 6 V
  • Output current up to 6 A
  • Typical quiescent current of 28 µA
  • Output voltage accuracy of ±1% (PWM mode)
  • Automatic Efficiency Enhancement (AEE)
  • Phase-shifted operation
  • Automatic power save mode
  • Adjustable soft start

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