JAJSGE0C
JANUARY 2014 – October 2018
TPS40425
PRODUCTION DATA.
1
特長
2
アプリケーション
3
概要
Device Images
3.1
アプリケーション概略図 (デュアル出力)
4
改訂履歴
5
Pin Configuration and Functions
Pin Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
Handling 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
Asynchronous Pulse Injection (API)
7.3.2
Adaptive Voltage Scaling (AVS)
7.3.3
Switching Frequency and Synchronization
7.3.4
Voltage Reference
7.3.5
Output Voltage and Remote Sensing Amplifier
7.3.6
Current Sensing and Temperature Sensing Modes
7.3.6.1
Non Smart-Power Operation
7.3.6.2
Smart-Power Operation.
7.3.7
Current Sensing
7.3.8
Temperature Sensing
7.3.9
Current Sharing
7.3.10
Linear Regulators
7.3.11
Power Sequence Between TPS40425 Device and Power Stage
7.3.12
PWM Signal
7.3.12.1
PWM Behavior During Soft-start Operation
7.3.13
Startup and Shutdown
7.3.14
Pre-Biased Output Start-up
7.3.15
PGOOD Indication
7.3.16
Overcurrent Protection
7.3.17
Overvoltage/Undervoltage Protection
7.3.18
Overtemperature Fault Protection
7.3.19
Input Undervoltage Lockout (UVLO)
7.3.20
Fault Communication
7.3.21
Fault Protection Summary
7.4
Device Functional Modes
7.5
Programming
7.5.1
Multi-Phase Applications
7.6
Register Maps
7.6.1
PMBus General Description
7.6.2
PMBus Functionality
7.6.2.1
PMBus Address
7.6.2.2
PMBus Connections
7.6.2.3
PMBus Data Format
7.6.2.4
PMBus Output Voltage Adjustment
7.6.2.4.1
No Margin Voltage
7.6.2.4.2
Margin High Voltage State
7.6.2.4.3
Margin Low State
7.6.3
Reading the Output Current
7.6.4
Soft-Start Time
7.6.5
Turn-On/Turn-Off Delay and Sequencing
7.7
Supported PMBus Commands
7.7.1
PAGE (00h)
7.7.2
OPERATION (01h)
7.7.3
ON_OFF_CONFIG (02h)
7.7.4
CLEAR_FAULTS (03h)
7.7.5
WRITE_PROTECT (10h)
7.7.6
STORE_USER_ALL (15h)
7.7.7
RESTORE_USER_ALL (16h)
7.7.8
CAPABILITY (19h)
7.7.9
VOUT_MODE (20h)
7.7.10
VIN_ON (35h)
7.7.11
VIN_OFF (36h)
7.7.12
IOUT_CAL_GAIN (38h)
7.7.13
IOUT_CAL_OFFSET (39h)
7.7.14
IOUT_OC_FAULT_LIMIT (46h)
7.7.15
IOUT_OC_FAULT_RESPONSE (47h)
7.7.16
IOUT_OC_WARN_LIMIT (4Ah)
7.7.17
OT_FAULT_LIMIT (4Fh)
7.7.18
OT_WARN_LIMIT (51h)
7.7.19
TON_RISE (61h)
7.7.20
STATUS_BYTE (78h)
7.7.21
STATUS_WORD (79h)
7.7.22
STATUS_VOUT (7Ah)
7.7.23
STATUS_IOUT (7Bh)
7.7.24
STATUS_TEMPERATURE (7Dh)
7.7.25
STATUS_CML (7Eh)
7.7.26
STATUS_MFR_SPECIFIC (80h)
7.7.27
READ_VOUT (8Bh)
7.7.28
READ_IOUT (8Ch)
7.7.29
READ_TEMPERATURE_2 (8Eh)
7.7.30
PMBus_REVISION (98h)
7.7.31
MFR_SPECIFIC_00 (D0h)
7.7.32
MFR_SPECIFIC_04 (VREF_TRIM) (D4h)
7.7.33
MFR_SPECIFIC_05 (STEP_VREF_MARGIN_HIGH) (D5h)
7.7.34
MFR_SPECIFIC_06 (STEP_VREF_MARGIN_LOW) (D6h)
7.7.35
MFR_SPECIFIC_07 (PCT_VOUT_FAULT_PG_LIMIT) (D7h)
7.7.36
MFR_SPECIFIC_08 (SEQUENCE_TON_TOFF_DELAY) (D8h)
7.7.37
MFR_SPECIFIC_16 (COMM_EEPROM_SPARE) (E0h)
7.7.38
MFR_SPECIFIC_21 (OPTIONS) (E5h)
7.7.39
MFR_SPECIFIC_22 (PWM_OSC_SELECT) (E6h)
7.7.40
MFR_SPECIFIC_23 (MASK SMBALERT) (E7h)
7.7.41
MFR_SPECIFIC_25 (AVS_CONFIG) (E9h)
7.7.42
MFR_SPECIFIC_26 (AVS_ADDRESS) (EAh)
7.7.43
MFR_SPECIFIC_27 (AVS_DAC_DEFAULT) (EBh)
7.7.44
MFR_SPECIFIC_28 (AVS_CLAMP_HI) (ECh)
7.7.45
MFR_SPECIFIC_29 (AVS_CLAMP_LO) (EDh)
7.7.46
MFR_SPECIFIC_30 (TEMP_OFFSET) (EEh)
7.7.47
MFR_SPECIFIC_32 (API_OPTIONS) (F0h)
7.7.48
MFR_SPECIFIC_44 (DEVICE_CODE) (FCh)
8
Applications and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Dual-Output Application
8.2.2
Design Requirements
8.2.3
Design Procedure
8.2.3.1
Switching Frequency Selection
8.2.3.2
Inductor Selection
8.2.3.3
Output Capacitor Selection
8.2.3.3.1
Output Voltage Deviation During Load Transient
8.2.3.3.2
Output Voltage Ripple
8.2.3.4
Input Capacitor Selection
8.2.3.5
VDD, BP5, BP3 Bypass Capacitor
8.2.3.6
R-C Snubber
8.2.3.7
Current and Temperature Sensor
8.2.3.8
Power Sequence Between the TPS40425 Device and Power Stage
8.2.3.9
Output Voltage Setting and Frequency Compensation Selection
8.2.3.10
Key PMBus Parameter Selection
8.2.3.10.1
MFR_SPECIFIC_21 (OPTIONS)
8.2.3.10.1.1
IOUT_CAL_GAIN
8.2.3.10.1.2
Enable and UVLO
8.2.3.10.1.3
Soft-Start Time
8.2.3.10.1.4
Overcurrent Threshold and Response
8.2.4
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.1.1
Layout Guidelines for TPS40425 Device
10.1.2
Layout Guidelines for Power Stage Device
10.2
Layout Example
11
デバイスおよびドキュメントのサポート
11.1
デバイス・サポート
11.1.1
開発サポート
11.1.1.1
Texas Instruments Fusion Digital Power Designer
11.1.1.2
TPS40kループ補償ツール
11.2
商標
11.3
静電気放電に関する注意事項
11.4
Glossary
12
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)
RHA|40
MPQF135D
サーマルパッド・メカニカル・データ
RHA|40
QFND115P
発注情報
jajsge0c_oa
jajsge0c_pm
2
アプリケーション
ワイヤレス・インフラストラクチャ
スイッチャ/ルータ・ネットワーク/サーバー/ストレージ