SBAA832 August   2026 TPS62A208-Q1 , TPS62A212-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
    1. 1.1 Load Transient Response Fundamentals
      1. 1.1.1 Phase 1: Passive Response (Capacitor Dominated)
      2. 1.1.2 Phase 2: Active Response (Control Loop)
  5. 2Parameters Affecting Load Transient Response
    1. 2.1 Output Stage Parameters
      1. 2.1.1 Output Capacitance
      2. 2.1.2 ESR and ESL of COUT
      3. 2.1.3 Output Inductance
    2. 2.2 Control Loop Parameters
      1. 2.2.1 Crossover Frequency, Phase Margin
      2. 2.2.2 Transient Non-Synchronous Mode
  6. 3Step-by-Step Compensation Selection Procedure
  7. 4Selecting Compensation Setting in TPS62A2xx-Q1
  8. 5Summary
  9. 6References

2.1.1 Output Capacitance

Building on the passive response phase discussed in Section 1, the output capacitor must supply or absorb the sudden change in load current during the interval before the inductor current has caught up. The peak voltage deviation during this interval is governed by: Δ V ≈   ( Δ I L o a d × Δ t ) C O U T