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TPS53647 4-Phase, D-CAP+, Step-Down, Buck Controller with NVM and PMBus™ Interface for ASIC Power and High-Current Point-of-Load
SLUSC39B
June 2015 – February 2017
TPS53647
PRODUCTION DATA.
CONTENTS
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TPS53647 4-Phase, D-CAP+, Step-Down, Buck Controller with NVM and PMBus™ Interface for ASIC Power and High-Current Point-of-Load
1
Features
2
Applications
3
Description
4
Revision History
5
Pin Configuration and 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
I/O Timing Requirements
6.7
Switching Characteristics
6.8
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
V3R3 LDO
7.3.2
PWM Operation
7.3.3
Current Sense and IMON Calculation
7.3.4
Setting the Load-Line (DROOP)
7.3.5
Load Transitions
7.3.6
Overshoot Reduction (OSR)
7.3.7
Undershoot Reduction (USR)
7.3.8
AutoBalance™ Current Sharing
7.3.9
Phase Overlap
7.3.10
VID
7.3.11
PWM and SKIP Signals
7.3.12
TSEN (Thermal Sense) Pin
7.3.13
RESET Function
7.3.14
Input UVLO
7.3.15
V5 Pin Undervoltage Lockout (UVLO)
7.3.16
Output Undervoltage Protection (UVP)
7.3.17
Overvoltage Protection (OVP)
7.3.18
Overcurrent Limit (OCL) and Overcurrent Protection (OCP)
7.3.19
Over Temperature Protection (OTP)
7.3.20
VR_HOT and VR_FAULT Indication
7.4
Device Functional Modes
7.5
Programming
7.5.1
User Selections
7.5.1.1
Switching Frequency
7.5.1.2
IMAX Information
7.5.1.3
Boot Voltage
7.5.1.4
Per-Phase Overcurrent Limit (OCL) Level
7.5.1.5
Overshoot Reduction (OSR) and Undershoot Reduction (USR) Levels
7.5.1.6
Slew Rate Selection
7.5.1.7
Mode Selections
7.5.1.8
Soft Start Slew Rate and PMBus Addresses
7.5.1.9
Ramp Selection
7.5.1.10
Maximum Active Phase Numbers
7.5.1.11
Pinstrap Mode Settings
7.5.1.12
NVM Default Settings
7.5.1.13
4-Phase Application
7.5.2
Supported Protections and Fault Reports
7.5.3
Supported PMBus Address and Commands Summary
7.5.3.1
Address Selection
7.5.3.2
Commands Summary
7.6
Register Maps
7.6.1
PMBus Description
7.6.1.1
PMBus General
7.6.1.2
PMBus Connections
7.6.1.3
Supported Data Formats
7.6.1.4
PMBus Command Format
7.6.2
PMBus Functionality
7.6.2.1
PMBus Address
7.6.2.2
Pin Strap Settings
7.6.2.3
Supported PMBus Commands
7.6.2.3.1
OPERATION (01h)
7.6.2.3.2
ON_OFF_CONFIG (02h)
7.6.2.3.3
CLEAR_FAULTS (03h)
7.6.2.3.4
WRITE_PROTECT (10h)
7.6.2.3.5
STORE_DEFAULT_ALL (11h)
7.6.2.3.6
RESTORE_DEFAULT_ALL (12h)
7.6.2.3.7
CAPABILITY (19h)
7.6.2.3.8
VOUT_MODE (20h)
7.6.2.3.9
VOUT_COMMAND (21h)
7.6.2.3.10
VOUT_MAX (24h)
7.6.2.3.11
VOUT_MARGIN_HIGH (25h)
7.6.2.3.12
VOUT_MARGIN_LOW (26h)
7.6.2.3.13
IOUT_CAL_OFFSET (39h)
7.6.2.3.14
VOUT_OV_FAULT_RESPONSE (41h)
7.6.2.3.15
VOUT_UV_FAULT_RESPONSE (45h)
7.6.2.3.16
IOUT_OC_FAULT_LIMIT (46h)
7.6.2.3.17
IOUT_OC_FAULT_RESPONSE (47h)
7.6.2.3.18
IOUT_OC_WARN_LIMIT (4Ah)
7.6.2.3.19
OT_FAULT_LIMIT (4Fh)
7.6.2.3.20
OT_FAULT_RESPONSE (50h)
7.6.2.3.21
OT_WARN_LIMIT (51h)
7.6.2.3.22
VIN_OV_FAULT_LIMIT (55h)
7.6.2.3.23
IIN_OC_FAULT_LIMIT (5Bh)
7.6.2.3.24
IIN_OC_FAULT_RESPONSE (5Ch)
7.6.2.3.25
IIN_OC_WARN_LIMIT (5Dh)
7.6.2.3.26
STATUS_BYTE (78h)
7.6.2.3.27
STATUS_WORD (79h)
7.6.2.3.28
STATUS_VOUT (7Ah)
7.6.2.3.29
STATUS_IOUT (7Bh)
7.6.2.3.30
STATUS_INPUT (7Ch)
7.6.2.3.31
STATUS_TEMPERATURE (7Dh)
7.6.2.3.32
STATUS_CML (7Eh)
7.6.2.3.33
STATUS_MFR_SPECIFIC (80h)
7.6.2.3.34
READ_VIN (88h)
7.6.2.3.35
READ_IIN (89h)
7.6.2.3.36
READ_VOUT (8Bh)
7.6.2.3.37
READ_IOUT (8Ch)
7.6.2.3.38
READ_TEMPERATURE_1 (8Dh)
7.6.2.3.39
READ_POUT (96h)
7.6.2.3.40
READ_PIN (97h)
7.6.2.3.41
PMBus_REVISION (98h)
7.6.2.3.42
MFR_ID (99h)
7.6.2.3.43
MFR_MODEL (9Ah)
7.6.2.3.44
MFR_REVISION (9Bh)
7.6.2.3.45
MFR_DATE (9Dh)
7.6.2.3.46
MFR_VOUT_MIN (A4h)
7.6.2.3.47
MFR_SPECIFIC_00 (Per-Phase Overcurrent Limit) (D0h)
7.6.2.3.48
MFR_SPECIFIC_01 (Telemetry Averaging Time) (D1h)
7.6.2.3.49
MFR_SPECIFIC_04 (Read VOUT) (D4h)
7.6.2.3.50
MFR_SPECIFIC_05 (VOUT Trim) (D5h)
7.6.2.3.51
MFR_SPECIFIC_07 (Additional Function Bits) (D7h)
7.6.2.3.52
MFR_SPECIFIC_08 (Droop) (D8h)
7.6.2.3.53
MFR_SPECIFIC_09 (OSR/USR) (D9h)
7.6.2.3.54
MFR_SPECIFIC_10 (Maximum Operating Current) (DAh)
7.6.2.3.55
MFR_SPECIFIC_11 (VBOOT) (DBh)
7.6.2.3.56
MFR_SPECIFIC_12 (Switching Frequency and TRISE) (DCh)
7.6.2.3.57
MFR_SPECIFIC_13 (Slew Rate and Other Operation Modes) (DDh)
7.6.2.3.58
MFR_SPECIFIC_14 (Ramp Height) (DEh)
7.6.2.3.59
MFR_SPECIFIC_15 (Dynamic Phase Shedding Thresholds) (DFh)
7.6.2.3.60
MFR_SPECIFIC_16 (VIN UVLO) (E0h)
7.6.2.3.61
MFR_SPECIFIC_20 (Maximum Operational Phase Number) (E4h)
7.6.2.3.62
MFR_SPECIFIC_22 ( VOUT_UV_FAULT_threshold) (E6h)
7.6.2.3.63
MFR_SPECIFIC_44 (DEVICE_CODE) (FCh)
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.2.1
Select the Switching Frequency
8.2.2.2
Set the Maximum Output Current (IMAX)
8.2.2.3
Select the Soft-Start Slew Rate
8.2.2.4
Select the Operation Mode
8.2.2.5
Choose Inductor
8.2.2.6
Select the Per-Phase Valley Current Limit And Ramp Level
8.2.2.7
Set the Load-Line
8.2.2.8
Set the BOOT Voltage
8.2.2.9
Set OSR/USR Thresholds to Improve Load Transient Performance
8.2.2.10
Digital Current Monitor (IMON) Gain and Filter Setting
8.2.2.11
Compensation Design
8.2.2.12
Set PMBus Addresses
8.2.2.13
Programming the Device with the PMBus
8.2.3
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.1.1
Schematic Review Checklist
10.1.2
PCB Design Guidelines
10.1.2.1
Layer Stack-up, 8-Layer PCB as example
10.1.2.2
Current Sensing Lines
10.1.2.3
Feedback Voltage Sensing Lines
10.1.2.4
PWM Lines
10.1.2.5
Power Chain Symmetry
10.1.2.6
Placing Analog Signal Components
10.1.2.7
Grounding Recommendations
10.1.2.8
TI Smart Power Stage CSD95372BQ5MC
10.1.2.8.1
Electrical Performance
10.1.2.8.2
Thermal Performance
10.1.2.8.3
Sensing Performance
10.1.2.9
Power Delivery and Power Density
10.2
Layout Example
11
Device and Documentation Support
11.1
Device Support
11.1.1
Third-Party Products Disclaimer
11.1.2
Development Support
11.2
Documentation Support
11.2.1
Related Documentation
11.3
Receiving Notification of Documentation Updates
11.4
Community Resources
11.5
Trademarks
11.6
Electrostatic Discharge Caution
11.7
Glossary
12
Mechanical, Packaging, and Orderable Information
IMPORTANT NOTICE
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）
RTA|40
MPQF134A
サーマルパッド・メカニカル・データ
RTA|40
QFND055H
発注情報
slusc39b_oa
slusc39b_pm
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