SNVA881 November   2019 LP87521-Q1 , LP87522-Q1 , LP87523-Q1 , LP87524-Q1 , LP87525-Q1 , LP87561-Q1 , LP87562-Q1 , LP87563-Q1 , LP87564-Q1 , LP87565-Q1

 

  1.   Stability Considerations for LP8756x-Q1 and LP8752x-Q1
    1.     Trademarks
    2. 1 Introduction
    3. 2 Stability Target
    4. 3 Use Cases
    5. 4 Measurements
      1. 4.1 Measurement Setup
      2. 4.2 Measurement Results
    6. 5 Simulations
      1. 5.1 Simulation Model
      2. 5.2 Simulation Results
    7. 6 Summary
    8. 7 References

4 Measurements

Measurements are done on the LP8756xQ1EVM evaluation module, which demonstrates the integrated circuit LP8756x-Q1 and LP8752x-Q1 from Texas Instruments. The evaluation module is controlled through the EVM's software graphical user interface (GUI). The software communicates with the EVM through an available USB port.

Table 2. Main components used in measurements

Description Manufacturer Part number
CAP, CERM, 10 µF, 10 V, X7R, 10%, 0805 MuRata GCM21BR71A106KE22
CAP, CERM, 22 µF, 10 V, X7R, 10%, 1206 MuRata GCM31CR71A226KE02
CAP, CERM, 47 µF, 10 V, X5R, 20%, 0805 MuRata GRM21BR61A476ME15
Inductor, Shielded, 470 nH, 4.7 A, 0.021 ohm, 1008 (2520) MuRata DFE252012PD-R47M

For more information about the used evaluation module and evaluation software, please refer to the The LP8756xQ1EVM (SV601325) Evaluation Module user's guide.