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TPS53647 Datasheet Preview

TPS53647 Datasheet

4-Phase D-CAP+ Step-Down Buck Controller

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TPS53647
SLUSC39B – JUNE 2015 – REVISED FEBRUARY 2017
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
1 8-bit Selectable BOOT Voltage via Pinstrap or
NVM: 0.5 V to 2.5 V (down to 5-mV Step)
• 1-, 2-, 3-, or 4- Phase Operation
• PMBus™ System Interface for Telemetry of
Voltage, Current, Power, Temperature, and Fault
Conditions
• 1.8-V and 3.3-V PMBus Bias Compatible
• Fault Reporting: Output Voltage, Output Current,
and Temperature
• Configurable with Non-Volatile Memory (NVM) or
Resistor Pinstrap
• 16 Levels of Programmable OCP with Pinstrap or
NVM
• Fast Transient with DCAP+™Control
• Optimized Efficiency at Light and Heavy Loads
• Support Pre-Bias Startup
• Phase Current Imbalance Detection and
Reporting
• 8 Independent Levels of Overshoot Reduction
(OSR) and Undershoot Reduction (USR)
• Driverless Configuration for Efficient High-
Frequency Switching
• Fully Compatible with CSD95372BQ5MC
NexFET™ Power Stage
• Accurate, Adjustable Voltage Positioning
• 300-kHz to 1-MHz Frequency Selections with
Closed-loop Frequency Control
• Patented AutoBalance™ Phase Balancing
• Uses TI’s Fusion Digital Power Designer GUI
• Dynamic Phase Shedding with Programmable
Current Threshold
• Conversion Voltage Range: 4.5 V to 17 V
• Small, 6 mm × 6 mm, 40-Pin, QFN, PowerPAD™
Package
2 Applications
• Application-Specific Integrated Circuit (ASIC)
Power in Communications Equipment
• High Density Power Solutions
• Server Power
• Smart Power Systems
3 Description
The TPS53647 is a high-current, multi-phase, step-
down controller. The device offers built-in non volatile
memory (NVM) and PMBus interface. It is compatible
with the NexFET power stages (CSD95372BQ5MC).
The TPS53647 provides 8-bit BOOT voltage selection
covering output voltage from 0.5 V to 2.5 V, with
steps as small as 5 mV, which is ideal for high
current application with accurate output voltage
setting. Advanced control features such as D-CAP+
architecture with undershoot reduction (USR) and
overshoot reduction (OSR) provide fast transient
response, lowest output capacitance, and high
efficiency. The TPS53647 also provides novel phase
interleaving strategy and dynamic phase shedding for
efficiency improvement at light loads. In addition, the
TPS53647 supports the PMBus communication
interface with systems for telemetry of voltage,
current, power, temperature, and fault conditions.
Some of the configurations can be programmed by
pinstrap or PMBus and stored in non-volatile memory
to minimize the external component count.
The TPS53647 is offered in a space saving, thermally
enhanced 40-pin QFN package and is rated to
operate from –40°C to 125°C.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS53647
QFN (40)
6.00 mm × 6.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Simplified Schematic
TPS53647
PWM1
CSP1
Power
Stage
PMBus
PWM2
CSP2
Power
Stage
PWM4
CSP4
Power
Stage
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.




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TPS53647 Datasheet Preview

TPS53647 Datasheet

4-Phase D-CAP+ Step-Down Buck Controller

No Preview Available !

TPS53647
SLUSC39B – JUNE 2015 – REVISED FEBRUARY 2017
4 Revision History
www.ti.com
Changes from Revision A (September 2016) to Revision B
Page
• Updated V3R3 LDO section ................................................................................................................................................. 18
• Added temperature default value VR_HOT and VR_FAULT Indication section ................................................................. 30
• Corrected factory default value of VOUT_OV_FAULT_RESPONSE command in Table 7 ................................................. 38
• Corrected factory default value of VIN_OV_FAULT_LIMIT command in Table 7................................................................ 38
• Corrected factory default value of MFR_ID command in Table 7 ........................................................................................ 39
• Corrected factory default value of MFR_SPECIFIC_44 command in Table 7 ..................................................................... 40
Changes from Original (June 2015) to Revision A
Page
• Updated the VADDR-TRISE condition of the PADDR specification in the Electrical Characteristics table from "1.647 V" to
"1.615 V" ................................................................................................................................................................................ 8
• Updated the VOCL-R condition of the IOCLx specification in the Electrical Characteristics table from "0.8 V" to "0.85 V" ........ 9
• Updated the VOCL-R condition of the IOCLx specification in the Electrical Characteristics table from "1.0 V" to "0.95 V" ........ 9
• Updated the VOCL-R condition of the VRAMP specification in the Electrical Characteristics table to "±50 mV" ........................ 9
• Updated the VSLEW-MODE condition of the VMODE specification in the Electrical Characteristics table from " 1.647 V with
±20 mV tolerance" to "1.615 V with ±10 mV tolerance" ...................................................................................................... 11
• Updated the VO-USR condition of the VUSR specification in the Electrical Characteristics table from " VO-USR 1.55 V
(USR OFF)" to "1.55 V VO-USR 1.6 V " ........................................................................................................................... 11
• Updated the VVBOOT (B7B6B5B4) condition of the VBOOT specification in the Electrical Characteristics table from "
1.647 V with ±20 mV tolerance" to "1.615 V with ±10 mV tolerance" ................................................................................. 12
• Clarified the READ_VIN (88h) section.................................................................................................................................. 69
• Corrected typographical error in READ_VOUT (8Bh) section.............................................................................................. 71
• Clarified the READ_IOUT (8Ch) section .............................................................................................................................. 71
• Clarified the READ_TEMPERATURE_1 (8Dh) section........................................................................................................ 72
• Clarified the READ_POUT (96h) section.............................................................................................................................. 73
• Clarified the READ_POUT (96h) section.............................................................................................................................. 74
• Clarified the MFR_SPECIFIC_04 (Read VOUT) (D4h) section ........................................................................................... 78
• Updated the MFR_SPECIFIC_14 (Ramp Height) (DEh) section ......................................................................................... 86
• Clarified the Set the Load-Line section ................................................................................................................................ 97
• Updated Table 79 ................................................................................................................................................................. 97
• Updated Table 82 ................................................................................................................................................................ 98
• Added Receiving Notification of Documentation Updates section ..................................................................................... 114
• Added Community Resources section ............................................................................................................................... 114
2 Submit Documentation Feedback
Product Folder Links: TPS53647
Copyright © 2015–2017, Texas Instruments Incorporated


Part Number TPS53647
Description 4-Phase D-CAP+ Step-Down Buck Controller
Maker etcTI
Total Page 30 Pages
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