JAJSGR0F
December 2010 – December 2018
TPS51916
PRODUCTION DATA.
1
特長
2
アプリケーション
3
概要
アプリケーション概略
4
改訂履歴
5
概要(続き)
6
Pin Configuration and Functions
Pin Functions
7
Specifications
7.1
Absolute Maximum Ratings
7.2
ESD Ratings
7.3
Recommended Operating Conditions
7.4
Thermal Information
7.5
Electrical Characteristics
7.6
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
VDDQ Switch Mode Power Supply Control
8.3.2
VREF and REFIN, VDDQ Output Voltage
8.3.3
Soft-Start and Powergood
8.3.4
Power State Control
8.3.5
Discharge Control
8.3.6
VTT and VTTREF
8.3.7
VDDQ Overvoltage and Undervoltage Protection
8.3.8
VDDQ Out-of-Bound Operation
8.3.9
VDDQ Overcurrent Protection
8.3.10
VTT Overcurrent Protection
8.3.11
V5IN Undervoltage Lockout Protection
8.3.12
Thermal Shutdown
8.4
Device Functional Modes
8.4.1
MODE Pin Configuration
8.4.2
D-CAP™ Mode
8.5
D-CAP2™ Mode Operation
9
Application and Implementation
9.1
Application Information
9.1.1
DDR3, D-CAP™ 400-kHz Application with Tracking Discharge
9.1.1.1
Design Requirements
9.1.1.2
Detailed Design Procedure
9.1.1.2.1
1. Determine the value of R1 AND R2
9.1.1.2.2
2. Choose the inductor
9.1.1.2.3
3. Choose the OCL setting resistance, RTRIP
9.1.1.2.4
Choose the output capacitors
9.1.1.3
Application Curves
9.1.2
DDR3, DCAP-2 500-kHz Application, with Tracking Discharge
9.1.2.1
Design Requirements
9.1.2.2
Detailed Design Procedure
9.1.2.2.1
Select Mode and Switching Frequency
9.1.2.2.2
Determine output capacitance
9.1.2.3
Application Curves
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
デバイスおよびドキュメントのサポート
12.1
ドキュメントの更新通知を受け取る方法
12.2
コミュニティ・リソース
12.3
商標
12.4
静電気放電に関する注意事項
12.5
Glossary
13
メカニカル、パッケージ、および注文情報
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)
RUK|20
MPQF220D
サーマルパッド・メカニカル・データ
RUK|20
QFND191D
発注情報
jajsgr0f_oa
7.6
Typical Characteristics
Figure 1.
V5IN Supply Current vs Junction Temperature
Figure 3.
VLDOIN Supply Current vs Junction Temperature
Figure 5.
OVP/UVP Threshold vs Junction Temperature
Figure 7.
VTT Discharge Current vs Junction Temperature
Figure 9.
Switching Frequency vs Input Voltage
Figure 11.
Switching Frequency vs Input Voltage
Figure 13.
Switching Frequency vs Load Current
Figure 15.
Switching Frequency vs Load Current
Figure 17.
Line Regulation
Figure 19.
VTTREF Load Regulation
Figure 21.
VTT Load Regulation
Figure 23.
VTT Load Regulation
Figure 25.
1.5-V Load Transient Response
Figure 27.
1.5-V Startup Waveforms
Figure 29.
1.5-V Soft-Stop Waveforms (Tracking Discharge)
Figure 31.
VDDQ Bode Plot
Figure 33.
VTT Bode Plot (Source)
Figure 2.
V5IN Shutdown Current vs Junction Temperature
Figure 4.
Current Sense Current vs Junction Temperature
Figure 6.
VDDQSNS Discharge Current vs Junction Temperature
Figure 8.
Switching Frequency vs Input Voltage
Figure 10.
Switching Frequency vs Input Voltage
Figure 12.
Switching Frequency vs Load Current
Figure 14.
Switching Frequency vs Load Current
Figure 16.
Load Regulation
Figure 18.
VTTREF Load Regulation
Figure 20.
VTTREF Load Regulation
Figure 22.
VTT Load Regulation
Figure 24.
Efficiency
Figure 26.
VTT Load Transient Response
Figure 28.
1.5-V Startup Waveforms (0.5-V Pre-Biased)
Figure 30.
1.5-V Soft-Stop Waveforms (Non-Tracking Discharge)
Figure 32.
VTT Bode Plot (Sink)