JAJSJY9A
May 2020 – June 2021
TPS543820E
PRODUCTION DATA
1
特長
2
アプリケーション
3
概要
4
Revision History
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
VIN Pins and VIN UVLO
7.3.2
Enable and Adjustable UVLO
7.3.3
Adjusting the Output Voltage
7.3.4
Switching Frequency Selection
7.3.5
Switching Frequency Synchronization to an External Clock
7.3.5.1
Internal PWM Oscillator Frequency
7.3.5.2
Loss of Synchronization
7.3.5.3
Interfacing the SYNC/FSEL Pin
7.3.6
Ramp Amplitude Selection
7.3.7
Soft Start and Prebiased Output Start-up
7.3.8
Mode Pin
7.3.9
Power Good (PGOOD)
7.3.10
Current Protection
7.3.10.1
Positive Inductor Current Protection
7.3.10.2
Negative Inductor Current Protection
7.3.11
Output Overvoltage and Undervoltage Protection
7.3.12
Overtemperature Protection
7.3.13
Output Voltage Discharge
7.4
Device Functional Modes
7.4.1
Forced Continuous-Conduction Mode
7.4.2
Discontinuous Conduction Mode during Soft Start
8
Application and Implementation
8.1
Application Information
8.2
Typical Applications
8.2.1
1.0-V Output, 1-MHz Application
8.2.1.1
Design Requirements
8.2.1.2
Detailed Design Procedure
8.2.1.2.1
Switching Frequency
8.2.1.2.2
Output Inductor Selection
8.2.1.2.3
Output Capacitor
8.2.1.2.4
Input Capacitor
8.2.1.2.5
Adjustable Undervoltage Lockout
8.2.1.2.6
Output Voltage Resistors Selection
8.2.1.2.7
Bootstrap Capacitor Selection
8.2.1.2.8
BP5 Capacitor Selection
8.2.1.2.9
PGOOD Pullup Resistor
8.2.1.2.10
Current Limit Selection
8.2.1.2.11
Soft-Start Time Selection
8.2.1.2.12
Ramp Selection and Control Loop Stability
8.2.1.2.13
MODE Pin
8.2.1.3
Application Curves
8.2.2
1.0-V Output, 1.5-MHz Application
8.2.2.1
Design Requirements
8.2.2.2
Detailed Design Procedure
8.2.2.3
Application Curves
8.2.3
3.3-V Output, 1.0-MHz Application
8.2.3.1
Design Requirements
8.2.3.2
Detailed Design Procedure
8.2.3.3
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
10.2.1
Thermal Performance
11
Device and Documentation Support
11.1
Receiving Notification of Documentation Updates
11.2
サポート・リソース
11.3
Trademarks
11.4
Electrostatic Discharge Caution
11.5
Glossary
12
Mechanical, Packaging, and Orderable Information
パッケージ・オプション
メカニカル・データ(パッケージ|ピン)
RPY|14
MPQF567B
サーマルパッド・メカニカル・データ
発注情報
jajsjy9a_oa
jajsjy9a_pm
8.2.3.3
Application Curves
Figure 8-31
Efficiency
Figure 8-33
Load Regulation
V
IN
= 12 V
I
OUT
= 0 A
Figure 8-35
Output Ripple – No Load
V
IN
= 12 V
I
OUT(DC)
= 1.5 A
I
STEP
= 3 A at 1A/µs
Figure 8-32
Load Transient
V
IN
= 12 V
R
OUT
= 1.1 Ω
Figure 8-34
Bode Plot
V
IN
= 12 V
I
OUT
= 6 A
Figure 8-36
Output Ripple – 6-A Load