SLVAFP0 December   2023 LMR51610

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Specifications
    1. 2.1 Input Voltage Range
    2. 2.2 Output Current Range
  6. 3External Component Selection
    1. 3.1 Duty Cycle Calculation
    2. 3.2 Output Voltage Calculation
    3. 3.3 Inductor Selection
    4. 3.4 Input and Output Capacitor
    5. 3.5 Enable Level Shift
    6. 3.6 Output Clamp Diode
  7. 4Evaluation Results
    1. 4.1 Typical Performance
    2. 4.2 Loop Response Bench Verification
  8. 5Conclusion
  9. 6References
  10. 7LMR50410 Design Example
    1. 7.1 LMR50410 Output Current Range
    2. 7.2 LMR50410 Efficiency

4.2 Loop Response Bench Verification

GUID-20230911-SS0I-VVLM-Z5WW-NNL3FS0QKBP8-low.png Figure 4-14 Bode Plot Test Result at VIN = 24V, VO = -12V, IO = 0.5 A
GUID-20230911-SS0I-SLR3-V3TG-HQ5SLTDLDP5L-low.png Figure 4-15 Bode Plot Test Result at VIN = 24V, VO = -5V, IO = 0.5 A
Table 4-1 Loop Test Bench Measurement Results Summary
VIN (V) VO (V) IO (A) Measurement Result
fc (kHz) Gain Margin (dB) Phase Margin (°)
24 -12 0.5 7.1 -20.4 40.9
48 12 0.5 8.44 -21.2 45
24 -5 0.5 12.7 -18.4 52.13
48 -5 0.5 12.7 -18 52.5