Average current-mode control of DC-DC power converters. (2022)

• Record Type: Book
• Further Information: Note: Marian K. Kazimierczuk, Dalvir K. Saini, Agasthya Ayachit.
• Authors: Kazimierczuk, Marian K; Saini, Dalvir K; Ayachit, Agasthya
• Contents: 1 Introduction 8 1.1 Principle of Operation of Conventional Average Current-Mode Control Technique 11 1.2 Principle of Operation of Modified Average Current-Mode Control Technique 12 1.3 Steady-State Operation 14 2 Average Current-Mode Control of Buck DC-DC Converter 17 2.1 Circuit Description, DC Characteristics, and Design 18 2.1.1 Circuit Description 18 2.1.2 DC Model 18 2.1.3 Design Example 21 2.2 Large-Signal and Small-Signal Models of PWM Buck Converter in CCM 22 2.3 Power Stage Transfer Functions 23 2.3.1 Duty Cycle-to-Output Voltage Transfer Function Tp 25 2.3.2 Duty Cycle-to-Inductor Current Transfer Function Tpi 27 2.3.3 Input Voltage-to-Output Voltage Transfer Function Mv 29 2.3.4 Input Voltage-to-Inductor Current Transfer Function M vi 31 2.3.5 Reverse Current Gain Ai 32 2.3.6 Open-Loop Input Impedance Zi 34 2.3.7 Open-Loop Output Impedance Zo 35 2.4 Inner-Current Loop 38 2.4.1 Transfer Function of Filter and Non-Inverting Amplifier Tf 39 2.4.2 Transfer Function of Pulse-Width Modulator Tm 41 2.4.3 Uncompensated Loop Gain Tki 42 2.4.4 Transfer Function of Control Circuit for Inner-Current Loop Tci 42 2.4.5 Compensated Loop Gain of Inner-Current Loop Ti 45 2.5 Closed-Loop Transfer Functions for Inner-Current Loop 46 2.5.1 Reference Voltage-to-Inductor Current Transfer Function Ticl 47 2.5.2 Reference Voltage-to-Output Voltage Transfer Function Tpicl 48 2.5.3 Input Voltage-to-Inductor Current Transfer Function Micl 48 2.5.4 Input Voltage-to-Output Voltage Transfer Function Mvicl 49 2.5.5 Input Impedance Ziicl 51 2.5.6 Output Impedance Zoicl 53 2.6 Outer-Voltage Loop 55 2.6.1 Transfer Function of Feedback Network β 56 2.6.2 Uncompensated Loop Gain for Outer-Voltage Loop Tkv 57 2.6.3 Transfer Function of Control Circuit for Outer-Voltage Loop Tcv 57 2.6.4 Compensated Loop Gain of Outer-Voltage Loop Tv 60 2.7 Closed-Loop Transfer Functions for Outer-Voltage Loop 60 2.7.1 Reference Voltage-to-Output Voltage Transfer Function Tpcl 61 2.7.2 Input Voltage to Duty-Cycle Transfer Function Mdv 61 2.7.3 Input Voltage-to-Output Voltage Transfer Function Mvcl 64 2.7.4 Input Impedance Zivcl 65 2.7.5 Output Impedance Zovcl 68 2.8 Comparison of Closed-Loop and Open-Loop Step Responses 70 2.8.1 Response of Output Voltage to Step Change in Input Voltage 70 2.8.2 Response of Output Voltage to Step Change in Duty Cycle, Current-Loop reference Voltage, and Voltage-Loop Reference Voltage 70 2.8.3 Response of Input Current to Step Change in Input Voltage 71 2.8.4 Response of Output Voltage to Step Change in Load Current 72 2.9 Summary 73 3 Average Current-Mode Control of Boost DC-DC Converter 75 3.1 Circuit Description, DC Characteristics, and Design 76 3.1.1 Circuit Description 76 3.1.2 DC Model 76 3.1.3 Design Example 79 3.2 Large-Signal and Small-Signal Models of PWM Boost Converter for CCM 80 3.3 Power-Stage Transfer Functions 82 3.3.1 Duty Cycle-to-Output Voltage Transfer Function Tp 83 3.3.2 Duty Cycle-to-Inductor Current Transfer Function Tpi 89 3.3.3 Input Voltage-to-Output Voltage Transfer Function Mv 96 3.3.4 Input Voltage-to-Inductor Current Transfer Function Mvi 97 3.3.5 Reverse Current Gain Ai 99 3.3.6 Open-Loop Input Impedance Zi 101 3.3.7 Open-Loop Output Impedance Zo 102 3.4 Inner-Current Loop 105 3.4.1 Transfer Function of Filter and Non-Inverting Amplifier Tf 106 3.4.2 Transfer Function of Pulse-Width Modulator T m 107 3.4.3 Uncompensated Loop Gain Tki 108 3.4.4 Transfer Function of Control Circuit Tci 108 3.4.5 Loop Gain of Inner-Current Loop Ti 111 3.5 Closed-Loop Transfer Functions for Inner-Current Loop 112 3.5.1 Reference Voltage-to-Inductor Current Transfer Function Ticl 112 3.5.2 Reference Voltage-to-Output Voltage Transfer Function Tpicl 113 3.5.3 Input Voltage-to-Inductor Current Transfer Function Micl 115 3.5.4 Input Voltage-to-Output Voltage Transfer Function Mvicl 116 3.5.5 Input Voltage-to-Duty Cycle Transfer Function Mdi 118 3.5.6 Input Impedance Ziicl 119 3.5.7 Output Impedance Zoicl 120 3.6 Outer-Voltage Loop 122 3.6.1 Transfer Function of Feedback Network β 122 3.6.2 Uncompensated Loop Gain for Outer-Voltage Loop Tkv 123 3.6.3 Transfer Function of Control Circuit for Outer-Voltage Loop Tcv 123 3.6.4 Compensated Loop Gain of Outer-Voltage Loop Tv 127 3.7 Closed-Loop Transfer Functions for Outer-Voltage Loop 128 3.7.1 Reference Voltage-to-Output Voltage Transfer Function Tpcl 128 3.7.2 Input Voltage-to-duty cycle Transfer Function Mdv 129 3.7.3 Input Voltage-to-Output Voltage Transfer Function Mvcl 131 3.7.4 Input Impedance Zivcl 133 3.7.5 Output Impedance Zovcl 135 3.8 Comparison of Closed-Loop and Open-Loop Step Responses 137 3.8.1 Response of Output Voltage to Step Change in Input Voltage 137 3.8.2 Response of Output Voltage to Step Change in Duty Cycle, Current-Loop reference Voltage, and Voltage-Loop Reference Voltage 138 3.8.3 Response of Input Current to Step Change in Input Voltage 139 3.8.4 Response of Output Voltage to Step Change in Load Current 140 3.9 Summary 141 4 Average Current-Mode Control of Buck-Boost DC-DC Converter 143 4.1 Circuit Description, DC Model, and Design 144 4.1.1 Circuit Description 144 4.1.2 DC Model 144 4.1.3 Design Example 147 4.2 Large-Signal and Small-Signal Models of PWM Buck-Boost Converter in CCM 149 4.3 Power Stage Transfer Functions 150 4.3.1 Duty Cycle-to-Output Voltage Transfer Function Tp 152 4.3.2 Duty Cycle-to-Inductor Current Transfer Function Tpi 159 4.3.3 Input Voltage-to-Output Voltage Tra
• Edition: 1st
• Publisher Details: Hoboken : John Wiley & Sons, Inc
• Publication Date: 2022
• Extent: 1 online resource
• Subjects: 621.3132; Electric controllers; DC-to-DC converters
• Languages: English
• ISBNs: 9781119525684
• Related ISBNs: 9781119525653
• Notes: Note: Includes bibliographical references and index.; Note: Description based on CIP data; resource not viewed.
• Access Rights: Legal Deposit; Only available on premises controlled by the deposit library and to one user at any one time; The Legal Deposit Libraries (Non-Print Works) Regulations (UK).
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