optimization of a discontinuous conduction mode flyback

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77 Table A-2. Bill <strong>of</strong> Materials for 4.7mH Design. Count RefDes Value Mfr Part Number Description 6 C21 1uF Std Std Capacitor, Ceramic, 1-uF, 25-V, X7R, 10% C22 1uF Std Std Capacitor, Ceramic, 1-uF, 25-V, X7R, 10% C4 1uF Std Std Capacitor, Ceramic, 1-uF, 25-V, X7R, 10% C5 1uF Std Std Capacitor, Ceramic, 1-uF, 25-V, X7R, 10% C11 1uF Std Std Capacitor, Ceramic, 1-uF, 25-V, X7R, 10% C31 1uF Std Std Capacitor, Ceramic, 1-uF, 25-V, X7R, 10% 1 C2 1000pF Std Std 1 C3 100uF Panasonic EEVFK0J101P Capacitor, Ceramic, 1000-pF, 25-V, X7R, 10% Capacitor, Aluminum, 100-uF, 6.3-V, 20%, FK Series 1 C1 220uF Panasonic EEVFK1E221P Capacitor, Aluminum, SM, 220-uF, 25-V, 150-milliohms (FK series) 5 D1 BAT54 Fairchild BAT54 Diode, Schottky, 200-mA, 30-V D2 BAT54 Fairchild BAT54 Diode, Schottky, 200-mA, 30-V D3 BAT54 Fairchild BAT54 Diode, Schottky, 200-mA, 30-V D4 BAT54 Fairchild BAT54 Diode, Schottky, 200-mA, 30-V D5 BAT54 Fairchild BAT54 Diode, Schottky, 200-mA, 30-V 1 L2 4.7mH Coilcraft DW3316-475 Coupled Inductor, SMT, 4.7-mH, 160-mA, 26-ohms 1 U4 TLV3492 TI TLV3492 IC, Dual Low Power Comparators 2 R9 1M Std Std Resistor, Chip, 1M-Ohms, 1/10-W, 1% R10 1M Std Std Resistor, Chip, 1M-Ohms, 1/10-W, 1% 1 R5 2M Std Std Resistor, Chip, 2M-Ohms, 1/10-W, 1% 2 R3 5M Std Std Resistor, Chip, 5M-Ohms, 1/10-W, 1% R4 5M Std Std Resistor, Chip, 5M-Ohms, 1/10-W, 1% 1 R6 118K Std Std Resistor, Chip, 118K-Ohms, 1/10-W, 1% 1 R8 357K Std Std Resistor, Chip, 357K-Ohms, 1/10-W, 1% 1 R7 649K Std Std Resistor, Chip, 649K-Ohms, 1/10-W, 1% 1 U6 TPS71501 TI TPS71501DCKR IC, Regulator, LDO, Micropower, 3.2µA @ 50mA. 1 M5 BSS138 Fairchild BSS138 MOSFET, Nch, 50V, 200-mA, 3.5 ohms
78 Table A-3. Bill <strong>of</strong> Materials for 14.4mH Design. Count RefDes Value Mfr Part Number Description 6 C21 1uF Std Std Capacitor, Ceramic, 1-uF, 25-V, X7R, 10% C22 1uF Std Std Capacitor, Ceramic, 1-uF, 25-V, X7R, 10% C4 1uF Std Std Capacitor, Ceramic, 1-uF, 25-V, X7R, 10% C5 1uF Std Std Capacitor, Ceramic, 1-uF, 25-V, X7R, 10% C11 1uF Std Std Capacitor, Ceramic, 1-uF, 25-V, X7R, 10% C31 1uF Std Std Capacitor, Ceramic, 1-uF, 25-V, X7R, 10% 1 C2 1000pF Std Std 1 C3 100uF Panasonic EEVFK0J101P Capacitor, Ceramic, 1000-pF, 25-V, X7R, 10% Capacitor, Aluminum, 100-uF, 6.3-V, 20%, FK Series 1 C1 220uF Panasonic EEVFK1E221P Capacitor, Aluminum, SM, 220-uF, 25-V, 150-milliohms (FK series) 5 D1 BAT54 Fairchild BAT54 Diode, Schottky, 200-mA, 30-V D2 BAT54 Fairchild BAT54 Diode, Schottky, 200-mA, 30-V D3 BAT54 Fairchild BAT54 Diode, Schottky, 200-mA, 30-V D4 BAT54 Fairchild BAT54 Diode, Schottky, 200-mA, 30-V D5 BAT54 Fairchild BAT54 Diode, Schottky, 200-mA, 30-V 1 U4 TLV3492 TI TLV3492 IC, Dual Low Power Comparators 2 R9 1M Std Std Resistor, Chip, 1M-Ohms, 1/10-W, 1% R10 1M Std Std Resistor, Chip, 1M-Ohms, 1/10-W, 1% 1 R5 2M Std Std Resistor, Chip, 2M-Ohms, 1/10-W, 1% 2 R3 5M Std Std Resistor, Chip, 5M-Ohms, 1/10-W, 1% R4 5M Std Std Resistor, Chip, 5M-Ohms, 1/10-W, 1% 1 R6 243K Std Std Resistor, Chip, 243K-Ohms, 1/10-W, 1% 1 R8 340K Std Std Resistor, Chip, 340K-Ohms, 1/10-W, 1% 1 R7 604K Std Std Resistor, Chip, 604K-Ohms, 1/10-W, 1% 1 U6 TPS71501 TI IC, Regulator, LDO, Micropower, 3.2µA @ TPS71501DCKR 50mA. 1 M5 BSS138 Fairchild BSS138 MOSFET, Nch, 50V, 200-mA, 3.5 ohms 1 L1 14.4mH Robert Taylor NA Coupled Inductor, Through Hole, 14.4-mH, 100-mA, 0.98-ohms
Page 1 and 2:
OPTIMIZATION OF A DISCONTINUOUS CON
Page 3 and 4:
This document is dedicated to my fr
Page 5 and 6:
TABLE OF CONTENTS page ACKNOWLEDGME
Page 7 and 8:
LIST OF TABLES Table page 1-1. Summ
Page 9 and 10:
3-10: Schematic of the complete ene
Page 11 and 12:
5-26: Converter efficiency versus s
Page 13 and 14:
Characterization of the acoustic en
Page 15 and 16:
task include piezoelectric (PZT) pa
Page 17 and 18:
Acoustical Sound Pressure 4 Acousti
Page 19 and 20:
6 The parametric study of the conve
Page 21 and 22:
+V in Control + Vout - Figure 2-1:
Page 23 and 24:
10 + V - L + + V - L Vout - +Vin (A
Page 25 and 26:
12 Vout D D =− =− . (2-6) V D'
Page 27 and 28:
14 The voltage transfer characteris
Page 29 and 30:
Table 2-2. CCM and DCM characterist
Page 31 and 32:
CHAPTER 3 DESIGN OF THE FLYBACK CIR
Page 33 and 34:
the diodes. The main problem with u
Page 35 and 36:
22 Control Circuit The control circ
Page 37 and 38:
Input From Bridge Rectifier Input F
Page 39 and 40: VCC From Bridge Rectifier IN TPS715
Page 41 and 42: Input From Acoustic Energy Transduc
Page 43 and 44: Shown in the figure are the input s
Page 45 and 46: 32 this level until the current in
Page 47 and 48: CHAPTER 4 PARAMETRIC STUDY AND OPTI
Page 49 and 50: frequency was varied from 350Hz - 2
Page 51 and 52: 38 conduction losses of inductor, M
Page 53 and 54: Losses (uW) 40 Losses vs. Switching
Page 55 and 56: some current flows into that circui
Page 57 and 58: (A) PCB Top (B) PCB Bottom Figure 4
Page 59 and 60: 0.40 0.91 0.85 1.5mH 46 (A) Top Vie
Page 61 and 62: Neck 48 Cavity Piezoelectric Compli
Page 63 and 64: 50 Frequency Response The frequency
Page 65 and 66: Phase (Degrees) -60 -160 -260 52 Ph
Page 67 and 68: 54 The maximum power for a circuit
Page 69 and 70: 56 1−cos( u) V = . (5.13) rect
Page 71 and 72: 58 Experimental Verification Experi
Page 73 and 74: BMS 4590P Compression Driver HP3457
Page 75 and 76: plane wave tube. The microphones ne
Page 77 and 78: 64 20 kΩ is connected to the outp
Page 79 and 80: 66 converter efficiency, which is t
Page 81 and 82: Power (mW) 30 25 20 15 10 5 68 Outp
Page 83 and 84: Output Power (mW) 70 Output Power v
Page 85 and 86: 72 level of 137 dB, the direct char
Page 87 and 88: 74 Future Work The work that has be
Page 89: APPENDIX BILL OF MATERIALS The bill
Page 93 and 94: 80 [11] K. Najafi, "Low-power micro
Page 95 and 96: 82 [33] J. Chen and K. D. T. Ngo, "
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