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What is SuPA ?

Delivering MORE Together. What is SuPA ?. What is SuPA ?. SuPA : Su pply for P ower A mplifier. “ SuPA ” = DC/DC converter that provides an adaptive, optimized output power supply for the RF PA to extend battery life and improve thermal performance. Traditional Approach:

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What is SuPA ?

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  1. Delivering MORE Together What is SuPA? What is SuPA?

  2. SuPA: Supply for Power Amplifier “SuPA” = DC/DC converter that provides an adaptive, optimized output power supply for the RF PA to extend battery life and improve thermal performance Traditional Approach: Fixed Battery Supply to PA More Efficient Approach: TI SuPA Adaptive Supply to PA VBATT VBATT VOUTis optimized for given POUT VOUT SuPA VCC VCTRL VCC RFIN RFOUT RFIN RFOUT

  3. SuPA Benefit #1:Reduced Battery Current Draw • RF PAs have efficiencies between 4-40%  TI SuPA solution can reduce battery current by 20%-50% • Longer battery life • Smaller battery form factor • More voice/usage timeand coverage

  4. SuPA Benefit #2:Thermal Dissipation Improvement • TI SuPA solution reduces worst case hot temperature by up to 30ºC • Reduced thermal constraints • Higher reliability • Thinner, lighter phone design 90.5˚C 60.1˚C Without SuPA With SuPA 30˙C Temperature Reduction +33% Power Savings

  5. SuPA Key Characteristics Differences vs Standard DC/DC Converter • Higher Switching Frequencies • Bypass Mode: ACB (Active Current Bypass) • ACLR, EVM RF Compliance

  6. Standard Buck vs. SuPA Buck

  7. Standard Buck vs. SuPA Buck (cont.)

  8. Summary • SuPA: Supply for Power Amplifier • Benefits • Reduced Battery Current Draw • Thermal Dissipation Improvement • Different from a standard buck converter Summary ti.com/rfpower

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