Intro to high fidelity measurement

2. Output Impedance

3. Filter Stability

4. Step Load

5. Extracted Phase Margin

6. PSRR

7. Crosstalk

8. Reverse Transfer

9. Components with DC BiasCopyright © 2011 Picotest.com All Rights Reserved

10. Why we NEED to make the measurements Copyright © 2011 Picotest.com All Rights Reserved Many performance characteristics are severely degraded by poor phase margin

11. Copyright © 2011 Picotest.com All Rights Reserved Complete Characteristics of Voltage Regulator Voltage Regulation PSRR Crosstalk Ripple & Noise Filter Stability DUT Step Load Dropout Input Z Stability Output Z Reverse Transfer Tempco

13. PSRR

14. Crosstalk

15. Reverse transfer

16. Filter Attenuation (i.e. EMI)

17. Components (impedance and Q)

18. 1uV-2uV sensitivity

19. Ripple and Noise / Jitter

20. Step Load Response

21. Turn-On, Softstart

22. Fault Recovery

23. Sequencing

24. Glitch search

25. Poor Sensitivity 10mV-20mV

26. Output ImpedanceCopyright © 2011 Picotest.com All Rights Reserved

28. J2101A 10Hz-45MHz Injection Transformer

29. J2110A DC-50MHz Voltage Injector

30. J2111A DC-40MHz Current Injector

31. J2120A Line Injector

32. J2130A DC Bias Injector

33. J2140A Cascadable AttenuatorsCopyright © 2011 Picotest.com All Rights Reserved

35. Vector Network Analyzer

36. Impedance Analyzer

37. Gain Phase Meter

38. Sine wave Generator

39. Frequency range:

40. 1 Hz – 40 MHzCopyright © 2010 Picotest.com All Rights Reserved

42. Specially annealed amorphous crystal core for outstanding low frequency performance Copyright © 2010 Picotest.com All Rights Reserved

44. Opamp Testing

45. Audio Testing

46. Very low distortionJ21110A Solid Stage Voltage Injector Traditional Phase Margin Copyright © 2011 Picotest.com All Rights Reserved

48. Wider Bandwidth

49. Bode PlotsPicotest J2110A Picotest J2100A Omicron Lab Bwit Copyright © 2011 Picotest.com All Rights Reserved Confidential and Proprietary

50. J2111A Phase Margin ExtractionNon-Invasive Approach Phase Margin without access to the control loop Middlebrook Filter Stability Copyright © 2010 Picotest.com All Rights Reserved Confidential and Proprietary

52. J2111A Step Load Comparison Step Load Transients High Resolution Low Resolution Copyright © 2010 Picotest.com All Rights Reserved

53. J2120A Line/PSRR Injector Copyright © 2011 Picotest.com All Rights Reserved Ultra High PSRR Regulator Measurement and Noise Floor

54. J2140A Cascadable Attenuators The #1 issue with Network Analyzer measurements is that the oscillator signal is too large! 3.3V 50mA Voltage Regulator Bode -37dBm and -20dBm injection -37dBm and -30dBm injection See recent article at www.picotest.com “Why Network Analyzer Signal Levels Affect Measurement Results” Copyright © 2011Picotest.com All Rights Reserved BODE 100 Shaped Level tames noise KEEP SIGNALS SMALL!! J2140A Cascadable Attenuator Is often required for Bode plot

56. DC Blocking

57. Measure X5R capacitor vs. DC Bias

58. Measure VaractorsJ2130A DC Bias Injector Copyright © 2011 Picotest.com All Rights Reserved

60. References

61. Regulators

62. Battery Impedance

63. Diodes

64. Non-invasive stability

65. Reverse Transfer

66. Output Impedance

67. PSRR

68. Crosstalk

69. ESL

70. Measuring Regulator Noise

71. Mosfet…And MORE

73. Measurement-by-Measurement

74. Hands on learning

75. Establishes a Test standard for voltage regulator testing