Learn · Power Management Integrated Circuits

Lecture 34 of 105Week 4

Transformer Model of a Buck Converter, Conduction Efficiency, Efficiency of an LDO versus Efficiency of a Switching Regulator

Prof. Qadeer Ahmad Khan Prof. Raveesh Magod · IIT Madras

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Power Management Integrated Circuits, IIT Madras (at NPTEL)
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CC BY-NC-SA, as NPTEL states it. Non-commercial use only.
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All the lectures

  1. Introduction to PMIC - Part 1 Video
  2. Introduction to PMIC - Part 2 Video
  3. Linear versus Switching Regulators Video
  4. Performance Parameters of Regulators Video
  5. Local vs Remote Feedback, Point of Load Regulators Video
  6. Kelvin Sensing, Droop Compensation Video
  7. Current Regulator Applications, Introduction to Bandgap Voltage References, PTAT and CTAT voltage Video
  8. Adding PTAT and CTAT Voltages Video
  9. Bandgap Voltage Reference Circuit, Brokaw Bandgap Circuit Video
  10. Sub-1-volt Bandgap Circuit Video
  11. Generating Multiple Reference Voltages; Applications of Linear Regulators Video
  12. Designing a Linear Regulator, Negative and Positive Feedback Video
  13. First-Order Systems, Phase Margin Video
  14. Closed-Loop Response of Second-Order Systems Video
  15. Relationship between Damping Factor and Phase Margin, Frequency Compensation, MOS Parasitic Capacitances Video
  16. Finding the Poles of the Error Amplifier - Part 1 Video
  17. Finding the Poles of the Error Amplifier - Part 2 Video
  18. Dominant Pole Frequency Compensation Video
  19. Dominant Pole Compensation at No-Load Video
  20. Dominant Pole Compensation using Miller Effect, RHP zero due to Miller Capacitor Video
  21. Intuitive Method of Finding the Poles, Pole Splitting after Miller Compensation Video
  22. Effect of RHP zero on Stability, Mitigating the Effect of RHP zero, LDO with NMOS Pass Element Video
  23. Output Impedance of PMOS LDO Video
  24. PSRR of PMOS LDO, Introduction to NMOS LDO Video
  25. Output Impedance & PSRR of NMOS LDO Video
  26. Sources of Error in Linear and Switching Regulators Video
  27. Offset in Amplifiers; Real Life Analogy; Static Offset Cancellation Video
  28. Dynamic Offset Cancellation Techniques (Chopping, Auto-zeroing) Video
  29. Digital LDO, Technique to Avoid Limit Cycle Oscillations in Digital LDO Video
  30. Hybrid LDO, Short-Circuit Protection Video
  31. Hiccup Mode and Foldback Current Limit Video
  32. Introduction to Switching Regulators Video
  33. volt-second Balance, Non-Idealities in the Power Stage of a Buck Converter Video
  34. Transformer Model of a Buck Converter, Conduction Efficiency, Efficiency of an LDO versus Efficiency of a Switching Regulator Video
  35. Synchronous versus Non-Synchronous Switching Regulators, PWM Control Techniques Video
  36. Losses in Switching Regulators (Conduction Loss, Gate-Driver Switching Loss) Video
  37. Dead-Time Switching Loss in DC-DC Converters Video
  38. Hard Switching Loss in DC DC Converters Video
  39. Magnetic Loss in DC-DC Converters, Relative Significance of Losses as a Function of the Load Current Video
  40. Output Voltage Ripple of a Buck Converter Video
  41. Choosing the Inductor and Capacitor for a Buck Converter Video
  42. CCM Vs DCM Operation in DC DC Converters Video
  43. CCM DCM Boundary Condition, Voltage Conversion Ratio in DCM Video
  44. Concept of Pulse Frequency Modulation PFM Video
  45. Classification of Pulse Width Modulators Video
  46. DC - DC Converter Control Techniques, Stability Analysis of Voltage Mode Buck Converter Part 1 Video
  47. Stability Analysis of Voltage Mode Buck Converter Part 2 Video
  48. Stability Analysis of Voltage Mode Buck Converter Part 3 Video
  49. Dominant Pole Compensation (Type-I with Gm-C Architecture) Video
  50. Dominant Pole Compensation (Type-I with Op Amp-RC Architecture) Video
  51. Introduction to Type-II Compensation Video
  52. Type-II Compensator using Gm-C Architecture - Part 1 Video
  53. Type-II Compensator using Gm-C Architecture - Part 2 Video
  54. Type-II Compensator using Gm-C Architecture - Part 3 Video
  55. Type-II Compensator using Op Amp-RC Architecture Video
  56. Introduction to Type-III Compensator Video
  57. Type-III Compensator using Op Amp-RC Architecture Video
  58. Simulation of DC-DC Converter with Type-III Compensator Video
  59. Type-III Compensator using Gm-C Architecture Video
  60. Feed-Forward Line Compensation, Loop Gain Compensation by Modulating Gm Video
  61. Designing a Buck Converter, Power Loss Budgeting Video
  62. Sizing Power MOSFETs Video
  63. Estimating Switching Losses and Choosing the Switching Frequency Video
  64. Choosing Inductance and Capacitance Values Video
  65. Choosing 'C' Depending on Factors that Limit the Load Transient Response Video
  66. Inductor and Capacitor Characteristics, Reducing the Effect of Capacitor ESL Video
  67. Gate Buffer and Non-Overlap Clock Generator in Gate-Driver Circuit Video
  68. Pulse-Width Modulator- Trailing Edge, Leading Edge and Dual Edge; Triangle Wave Generator Video
  69. Average Ramp Voltage of Single-Edge PW Modulator,Design Considerations of EA Video
  70. Delays Associated with PW Modulator, PFM and PSM Operation, DCM Operation using NMOS Video
  71. Designing a Zero-Cross Comparator, Inverter-Based Auto-Zeroed Comparator, Simulation Demo Video
  72. Current Mode Control- Peak, Valley, Emulated; VMC versus CMC; Sub-Harmonic Oscillation Video
  73. Ramp-Adaptive Slope Compensation to Avoid Current Loop Instability Video
  74. Non-Linear Control of DC-DC Converters, Phase-Shift between i_L and v_C Video
  75. Stabilising a Voltage-Mode Hysteretic Converter using R_esr, Relation between F_sw and the Hysteresis Window Video
  76. Hysteretic Converter - Simulation Demo Video
  77. Current-Mode Hysteretic Converter, Using R-C as Ripple Generator Video
  78. Controlling the Switching Frequency of a Hysteretic Converter, Delay in the Hysteretic Comparator Video
  79. Frequency and Voltage Regulation Loops in a Fixed-Frequency Hysteretic Converter Video
  80. Resetting the Capacitor Voltage in a Hysteretic Converter, Constant ON-Time Control Video
  81. Introduction to Boost Converter, RHP Zero in a Boost Converter Video
  82. Introduction to Buck-Boost Converter Video
  83. Tri-Mode Buck-Boost Converter (Buck, Buck-Boost and Boost) Video
  84. Boundary Conditions for Mode Transition in a Tri-Mode Buck-Boost Converter Video
  85. Generating Buck and Boost Duty Cycles in a Tri-Mode Buck-Boost Converter Video
  86. Introduction to Switched-Capacitor DC-DC Converters,Switched-Capacitor DC-DC Converter with V_o = 2*V_DD Video
  87. Applications of Switched-Capacitor DC-DC Converters in Open-Loop, Regulating the Output using Feedback Control Video
  88. H-Bridge Switched-Capacitor DC-DC Converter,SC DC-DC converter with Multiple Gain Settings Video
  89. Current Sensing Techniques in DC-DC Converters Video
  90. Analog Layout Techniques - Part 1 Video
  91. Analog Layout Techniques - Part 2 Video
  92. Digital Control of DC-DC Converters, ADC Architectures Video
  93. Digital Pulse-Width Modulator Architectures, Adaptive Compensation Video
  94. Limitations of Analog and Digital Controllers, Time-Based Controller for Buck Converter Video
  95. Time-Based Controller for Buck Converter and for LDO, Issues with Time-Based Control Video
  96. Multi-Phase DC-DC Converters Video
  97. Dynamic Voltage and Frequency Scaling, Single Inductor Multiple Output (SIMO) DC-DC Converter Video
  98. LCD/AMOLED Display Drivers - Part 1 Video
  99. LCD/AMOLED Display Drivers - Part 2 Video
  100. LCD/AMOLED Display Drivers - Part 3 Video
  101. LED Drivers for Camera Flash Video
  102. Li-Ion Battery and its Charging Phases Video
  103. Battery Charger IC Video
  104. Live Session 25-02-2021 Video
  105. Live Session 27-02-2020 Video