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Win with. NOVATEK Microelectronics Corporation. Power Management IC Design for Display Systems. 聯詠科技 類比 IC 設計經理 顏志仁 博士. http://www.novatek.com.tw. In NO VA tion  Quality  Service. Outline. Introduction Linear Regulator Charge Pump

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Presentation Transcript
slide1

Win with

NOVATEK Microelectronics Corporation

Power Management IC Design

for Display Systems

聯詠科技 類比IC設計經理

顏志仁 博士

http://www.novatek.com.tw

InNOVAtion  Quality  Service

slide2

Outline

  • Introduction
  • Linear Regulator
  • Charge Pump
  • DC-DC Converter
  • Conclusion
slide3

Main References

  • Dr. Philip Mok, “Design of Power Management IC – Voltage Reference, Low-Dropout Regulator and Switching Regulator”, 2005 混合訊號式積體電路設計專題研討會, June 16 –17, 2005.
  • 陳科宏 教授, “Power Management IC Design”, 聯詠科技教育訓練教材, Jan. 23 – Mar. 20, 2007.
  • N. Mohan, T. M. Undeland and W. P. Robbins, “Power Electronics: Converters, Applications and Design”, John Wiley & Sons, Inc., 2003.
slide4

Outline

  • Introduction
  • Linear Regulator
  • Charge Pump
  • DC-DC Converter
  • Conclusion
slide5

Introduction

Power Blocks in LCD TV System

Power-Management IC Design for Display Systems

C.–J. Yen

1

slide6

Introduction

Power Management for LCD TV System

LCD Module

LCD Control Board

ASIC

(T-CON,

RSDS/TTL

transmitter)

Data driver

RSDS/

TTL

Gamma correction

g

PCB with data bus

OSD

Display area

cable

Analog

Signals

ADC/PLL

VGA&

Scaler

TTL/

LVDS/

TMDS

DVI/Video

Decoder

Digital

Signals

MCU

Power Management

Inverter

Back light unit

Scan driver

Power-Management IC Design for Display Systems

C.–J. Yen

2

slide7

Introduction

Power Supplies for TV Display Panel

Power-Management IC Design for Display Systems

C.–J. Yen

3

slide8

Introduction

Panel

3.3V

Optical

Cont. Current 20mA

1.8/2.5V

1.8V

Current voer 200mA

15/-7.5v

5V

Interface

Audio

1.8/2.5/3.3V

1.8V

5/3.3V

Li-ion

Charger

Power Blocks in DSC System

Power-Management IC Design for Display Systems

C.–J. Yen

4

slide9

Introduction

LCD Module

  • LCD Control Board

Gamma Correction

Timing Controller

Data Driver

TTL/

Analog RGB

PLL

g

PCB with data bus

Composite/YUV

Signals

LCD Panel

MCU

Analog/Digital

Video Decoder

Backlight Module

Power Management

Inverter

Scan Driver

Power Management for DSC System

Power-Management IC Design for Display Systems

C.–J. Yen

5

slide10

Introduction

Block Diagram of Power Supplies in DSC Display Panel

Power-Management IC Design for Display Systems

C.–J. Yen

6

slide11

Outline

  • Introduction
  • Linear Regulator
  • Charge Pump
  • DC-DC Converter
  • Conclusion
slide12

Linear Regulator

IC Design Considerations of Voltage Regulators

Power-Management IC Design for Display Systems

C.–J. Yen

7

slide13

Linear Regulator

Concept of Linear Regulator

Power-Management IC Design for Display Systems

C.–J. Yen

8

slide14

Linear Regulator

Working Principle and Power Efficiency

Power-Management IC Design for Display Systems

C.–J. Yen

9

slide15

Linear Regulator

Load Transient Response

Power-Management IC Design for Display Systems

C.–J. Yen

10

slide16

Linear Regulator

Load Transient Response (cont’d)

Power-Management IC Design for Display Systems

C.–J. Yen

11

slide17

Linear Regulator

Power-Supply Rejection Ratio

Power-Management IC Design for Display Systems

C.–J. Yen

12

slide18

Linear Regulator

Stability and Compensation

Power-Management IC Design for Display Systems

C.–J. Yen

13

slide19

Linear Regulator

Circuit Implementation

Power-Management IC Design for Display Systems

C.–J. Yen

14

slide20

Linear Regulator

A Four-Stage Single-Ended Amplifier

Power-Management IC Design for Display Systems

C.–J. Yen

15

slide21

Linear Regulator

AC Compensation

Power-Management IC Design for Display Systems

C.–J. Yen

16

slide22

Linear Regulator

AC Compensation (cont’d)

Power-Management IC Design for Display Systems

C.–J. Yen

17

slide23

Linear Regulator

Dynamic Bias

Power-Management IC Design for Display Systems

C.–J. Yen

18

slide24

Linear Regulator

Second Stage

Power-Management IC Design for Display Systems

C.–J. Yen

19

slide25

Linear Regulator

Third Stage

Power-Management IC Design for Display Systems

C.–J. Yen

20

slide26

Linear Regulator

Fourth Stage

Power-Management IC Design for Display Systems

C.–J. Yen

21

slide27

Linear Regulator

Measured Performance

Power-Management IC Design for Display Systems

C.–J. Yen

22

slide28

Linear Regulator

Current-Mode Low Dropout Regulator

Power-Management IC Design for Display Systems

C.–J. Yen

23

slide29

Linear Regulator

Dropout Tracking Circuit

Power-Management IC Design for Display Systems

C.–J. Yen

24

slide30

Linear Regulator

Dropout Tracking Circuit (cont’d)

Power-Management IC Design for Display Systems

C.–J. Yen

25

slide31

Linear Regulator

AC Analysis

Power-Management IC Design for Display Systems

C.–J. Yen

26

slide32

Linear Regulator

AC Analysis (cont’d)

Power-Management IC Design for Display Systems

C.–J. Yen

27

slide33

Linear Regulator

Measured Dropout vs. ILOAD

Power-Management IC Design for Display Systems

C.–J. Yen

28

slide34

Linear Regulator

Output Voltage Ripple

Power-Management IC Design for Display Systems

C.–J. Yen

29

slide35

Linear Regulator

Efficiency

Power-Management IC Design for Display Systems

C.–J. Yen

30

slide36

Linear Regulator

Load Transient

Power-Management IC Design for Display Systems

C.–J. Yen

31

slide37

Outline

  • Introduction
  • Linear Regulator
  • Charge Pump
  • DC-DC Converter
  • Conclusion
slide38

Charge Pump

Operating Principle of Voltage Doubler

Power-Management IC Design for Display Systems

C.–J. Yen

32

slide39

Charge Pump

Operating Principle of Negative Charge Pump (X-1)

Power-Management IC Design for Display Systems

C.–J. Yen

33

slide40

Charge Pump

Charge Pump for Generating Arbitrary Voltages

Power-Management IC Design for Display Systems

C.–J. Yen

34

slide41

Charge Pump

Charge Pump for Generating Arbitrary Voltages (cont’d)

Power-Management IC Design for Display Systems

C.–J. Yen

35

slide42

Charge Pump

Charge Pump for Generating Arbitrary Voltages (cont’d)

Power-Management IC Design for Display Systems

C.–J. Yen

36

slide43

Charge Pump

Multi-Output Charge Pump

Power-Management IC Design for Display Systems

C.–J. Yen

37

slide44

Charge Pump

Multi-Output Charge Pump (cont’d)

Power-Management IC Design for Display Systems

C.–J. Yen

38

slide45

Charge Pump

PN-Junction Forward Bias in Charge Pump

Power-Management IC Design for Display Systems

C.–J. Yen

39

slide46

Charge Pump

Switched-Body Technique

Power-Management IC Design for Display Systems

C.–J. Yen

40

slide47

Charge Pump

Switching Frequency vs. Output Voltage Ripple

Power-Management IC Design for Display Systems

C.–J. Yen

41

slide48

Charge Pump

Switching-Frequency Selector for Charge Pump

Power-Management IC Design for Display Systems

C.–J. Yen

42

slide49

Charge Pump

Load Detector

Power-Management IC Design for Display Systems

C.–J. Yen

43

slide50

Charge Pump

Load Current Detecting

Power-Management IC Design for Display Systems

C.–J. Yen

44

slide51

Charge Pump

Output Voltage Detecting

Power-Management IC Design for Display Systems

C.–J. Yen

45

slide52

Charge Pump

Clamp Circuit for Charge Pump

Power-Management IC Design for Display Systems

C.–J. Yen

46

slide53

Charge Pump

Output-Regulating Charge Pump

Power-Management IC Design for Display Systems

C.–J. Yen

47

slide54

Charge Pump

Input-Regulating Charge Pump

Power-Management IC Design for Display Systems

C.–J. Yen

48

slide55

Outline

  • Introduction
  • Linear Regulator
  • Charge Pump
  • DC-DC Converter
  • Conclusion
slide56

DC-DC Converter

Basic Topologies of Switched-Mode DC-DC Converters

Power-Management IC Design for Display Systems

C.–J. Yen

49

slide57

DC-DC Converter

Operation Principle of Switching Regulator

Power-Management IC Design for Display Systems

C.–J. Yen

50

slide58

DC-DC Converter

Asynchronous vs. Synchronous Switched-Mode Regulator

Power-Management IC Design for Display Systems

C.–J. Yen

51

slide59

DC-DC Converter

CCM vs. DCM Operation

Power-Management IC Design for Display Systems

C.–J. Yen

52

slide60

DC-DC Converter

Efficiency as a Function of MOS Switch Resistance

Power-Management IC Design for Display Systems

C.–J. Yen

53

slide61

DC-DC Converter

Efficiency as a Function of MOS Switch Resistance (cont’d)

Power-Management IC Design for Display Systems

C.–J. Yen

54

slide62

DC-DC Converter

Efficiency as a Function of MOS Switch Resistance (cont’d)

Power-Management IC Design for Display Systems

C.–J. Yen

55

slide63

DC-DC Converter

Dead-Time Control

Power-Management IC Design for Display Systems

C.–J. Yen

56

slide64

DC-DC Converter

Voltage Comparator Design

Power-Management IC Design for Display Systems

C.–J. Yen

57

slide65

DC-DC Converter

PWM Control

Power-Management IC Design for Display Systems

C.–J. Yen

58

slide66

DC-DC Converter

Sawtooth Voltage Generator

Power-Management IC Design for Display Systems

C.–J. Yen

59

slide67

DC-DC Converter

Closed-Loop Gain of a PWM Buck Converter

Power-Management IC Design for Display Systems

C.–J. Yen

60

slide68

DC-DC Converter

Poles and Zeros Implementation

Power-Management IC Design for Display Systems

C.–J. Yen

61

slide69

DC-DC Converter

Startup with Current Limiting

Power-Management IC Design for Display Systems

C.–J. Yen

62

slide70

DC-DC Converter

A PWM Buck Converter with End-Point Prediction

Power-Management IC Design for Display Systems

C.–J. Yen

63

slide71

DC-DC Converter

Tracking Speed of Buck Converter

Power-Management IC Design for Display Systems

C.–J. Yen

64

slide72

DC-DC Converter

Method of End-Point Prediction

Power-Management IC Design for Display Systems

C.–J. Yen

65

slide73

DC-DC Converter

Loop Gain

Power-Management IC Design for Display Systems

C.–J. Yen

66

slide74

DC-DC Converter

Voltage-Controlled Output

Power-Management IC Design for Display Systems

C.–J. Yen

67

slide75

DC-DC Converter

Voltage Summation Circuit

Power-Management IC Design for Display Systems

C.–J. Yen

68

slide76

DC-DC Converter

Over Current Protection Circuit

Power-Management IC Design for Display Systems

C.–J. Yen

69

slide77

DC-DC Converter

Experimental Results (I)

Power-Management IC Design for Display Systems

C.–J. Yen

70

slide78

DC-DC Converter

Experimental Results (II)

Power-Management IC Design for Display Systems

C.–J. Yen

71

slide79

DC-DC Converter

Experimental Results (III)

Power-Management IC Design for Display Systems

C.–J. Yen

72

slide80

Outline

  • Introduction
  • Linear Regulator
  • Charge Pump
  • DC-DC Converter
  • Conclusion
slide81

Conclusion

  • Low Cost
  • Smaller Size
  • High Performance
  • Standardization
  • Integration
  • Circuit Technology

What is the Customer’s Want

Power-Management IC Design for Display Systems

C.–J. Yen

73

slide82

Conclusion

Challenges to Display Power-Management IC

■Chip Area

■Switching Noise

■Output Accuracy

■Temperature Effect

■Protections

■Process

■Patents

Power-Management IC Design for Display Systems

C.–J. Yen

74

slide83

Conclusion

■Highly Integrated

■Circuit Technology

■System Know-How

■Process Development

■Market Share

Customer

New

Now

Now

New

Technology

Prospects of Power-Management IC for Display Systems

Power-Management IC Design for Display Systems

C.–J. Yen

75

slide84

Thank You !

www.novatek.com.tw