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TPS653851A-Q1
SLVSF97 – JANUARY 2020
TPS653851A-Q1 Multirail Power Supply for Microcontrollers in Safety-Relevant
Applications
1 Device Overview
1.1
Features
1
• Qualified for Automotive Applications
• AEC-Q100 Qualified With the Following Results:
– Device Temperature Grade 0: –40°C to +150°C
Ambient Operating Temperature
– Device HBM ESD Classification Level 2
– Device CDM ESD Classification Level C4B
• Input Voltage Range
– 7 to 36-V for Initial Battery Power Up
– 4 to 36-V Full Functionality After Initial Battery
Power Up
– Minimum 2.3 V During Operation After Wake-up
• Supply Rails (With Internal FETs)
– 6-V Synchronous Buck-Boost Preregulator
– 5-V, 285-mA LDO (CAN, Peripherals or ADC
REF 1% accuracy with 20 to 120 mA load TJ ≤
150°C, 1.25% TJ > 150°C)
– 3.3-V or 5-V, 350-mA LDO (MCU)
TPS653851A-Q1.
– 2 LDOs Protected for Sensor Supply or
Peripherals
– 120 mA for Sensor Supply 1 (VSOUT1), 100
mA for Sensor Supply 2 (VSOUT2)
– Configurable Tracking Mode (Tracking Input
Pin), or 3.3-V or 5-V Fixed Output Voltage
– Short-to-Ground and Battery Protection
– Charge Pump: 6-V Minimum, 11-V Maximum
Above Battery Voltage
• Monitoring and Protection
– Independent Undervoltage and Overvoltage
Monitoring on All Regulator Outputs, Battery
Voltage, and Internal Supplies
– Voltage Monitoring Circuitry, Including
Independent Bandgap Reference, Supplied from
Separate Battery Voltage Input Pin
– Self-Check on All Voltage Monitoring (During
Power-Up and After Power-Up Initiated by
External MCU)
– All Supplies Protected With Current Limit and
Overtemperature Prewarning and Shutdown
1.2
•
• Microcontroller Interface
– Open and Close Window or Question-Answer
Watchdog Function
– Monitor for Functional Safety MCU Fault output
(PWM or level), MCU Error-Signal Monitor
– DIAGNOSTIC state for Performing Device SelfTests and System Diagnostics
– SAFE State for Device and System Protection
upon Detected System Failure
– Clock Monitor for Internal Oscillator
– Analog and Logic Built-In Self-Test
– CRC on Non-Volatile Memory as well as Device
and System Configuration Registers and SPI
Communications
– Reset Circuit for MCU
– Diagnostic Output Pin
• SPI With CRC on Command Plus Data
• Error Reporting Through SPI Registers for Errors
on System Level and Device Level
• Enable-Drive Output for Disabling External PowerStages on Any Detected System Failure
• Wake-up through IGN Pin (ignition) or CAN_WU
Pin (transceiver or other function)
• 48-Pin HTSSOP PowerPAD™ IC Package
Applications
Automotive Safety-Relevant Applications
•
Industrial Safety-Relevant Applications
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.
TPS653851A-Q1
SLVSF97 – JANUARY 2020
1.3
www.ti.com
Description
The TPS653851A-Q1 device is a multirail power supply designed to supply microcontrollers in safety
relevant applications, such as those found in the automotive industry. The device supports functional
safety microcontrollers with dual-core lockstep (LS) and other multi-core architectures.
The TPS653851A-Q1 device integrates multiple supply rails to power the MCU, CAN or FlexRay, and
external sensors. A buck-boost converter with internal FETs converts the input battery voltage between
2.3 V and 36 V to a 6-V preregulator output that supplies the other regulators. An integrated charge pump
provides an overdrive voltage for the internal regulators, and can also be used to drive an external NMOS
FET as reverse battery protection. The device supports wake-up from an ignition signal (IGN pin) or wakeup from a CAN transceiver or other signal (CAN_WU pin).
An independent voltage monitoring unit inside the device monitors undervoltage and overvoltage on all
internal supply rails and regulator outputs of the battery supply. Regulator current limits and temperature
protections are also implemented. The TPS653851A-Q1 device features a question-answer watchdog,
MCU error-signal monitor, clock monitoring on internal oscillator, self-check on clock monitor, cyclic
redundancy check (CRC) on non-volatile memory and SPI communication, a diagnostic output pin
allowing MCU to observe device internal analog and digital signals, a reset circuit for the MCU (NRES pin)
and a safing output (ENDRV pin) to disable external power-stages on any detected system-failure. The
device automatically runs a built-in self-test (BIST) at start up and the MCU may re-run the BIST during
system run time through software control if needed. A dedicated DIAGNOSTIC state allows the MCU to
check TPS653851A-Q1 functionality.
The TPS653851A-Q1 device also has an error reporting capability through the SPI register. The device
has separate status bits in the SPI register for each specific error on the system level or device level.
When the device detects a particular error condition, it sets the appropriate status bit and keeps this status
bit set until the MCU reads-out the SPI register in which this status bit was set. Based on which status bit
was set, the MCU can decide whether it must keep the system in a safe state or whether it can resume
with the operation of the system.
The TPS653851A-Q1 device is available in a 48-pin HTSSOP PowerPAD™ IC package.
Table 1-1. Device Information (1)
PART NUMBER
TPS653851A-Q1
(1)
2
PACKAGE
BODY SIZE
HTSSOP (48)
12.50 mm × 6.10 mm
For more information, see Section 4, Mechanical Packaging and Orderable Information.
Device Overview
Copyright © 2020, Texas Instruments Incorporated
Submit Documentation Feedback
Product Folder Links: TPS653851A-Q1
TPS653851A-Q1
www.ti.com
1.4
SLVSF97 – JANUARY 2020
Typical Application Diagram
Battery Voltage
(2.3 V to 36 V)
TPS65385xx-Q1
5V
CAN Interface
CAN wakeup
Multirail Power Supply
Ignition
EN
Voltage Monitor
FETs
3.3 V / 5 V
DRVOFF
ENDRV
RESET
Error Signal
Monitor
6 × PWM
3 × HS
NRES
ERROR
Dual-Core Lock-Step
Microcontroller
Watchdog
SPI
DIAG_OUT
M
Motor-Driver
(DRV320x)
3 × LS
SPI
SPI
DIAG_OUT
3.3 V, 5 V
Sensor 1
Sensor 2
Texas Instruments TPS653850A-Q1 TPS653851A-Q1 TPS653852A-Q1
TPS653853A-Q1 TPS653854A-Q1 Functional safety ASIL-D ASIL D
ISO26262 buck boost buck-boost 2MHz low power mode synchronous
AEC-Q100 grade-1 grade-0 grade 1 grade 0 SBC sensor supply tracking
efficiency pre-regulator, state machine window Q&A watchdog safe
state controller Build in self test BIST ABIST LBIST power management uC
µC Interface SPI
Infineon www.infineon.com IFX TLF35584 AURIX AURIXTM TC3xx TC39x
TC399 TC397 TC277 TC297 TC299 TC35 TC36 TC37 TC38
TLF35584 TLF35584QVVS2 TLF35584QVVS2 TLF35584QKVS1
TLF35584QKVS2 TLF35584QV VS1/VS2 TLF35584QK VS1/VS2 PRO-SIL
NXP nxp.com FS45 FS65 FS66 FS6600 FS84 FS85 MPC57xx PMC57
MPC574 MPC577 MPC56 MPC56xx SafeAssure
STM st.com SPC5 SPC5 P SPC56 SPC57 SPC58
Allegro MicroSystems A²-SIL A4412 ARG81400 ARG82800 ARG82801
Safety Microcontroller MCU
AUTOSAR
FMEA safety case Automotive motor control body chassis BMS Battery
Management system EPS Electric Power Steering Belt Starter Generator
xSG Traction Inverter Braking Electric Park Brake EPB DSG transmission
gear shifter transfer case engine management ADAS fusion body control
module ADAS domain controller, suspension, DC/DC, charger, gateway
HEV/EV
3.3 V / 5 V
Figure 1-1. Typical Application Diagram
Device Overview
Copyright © 2020, Texas Instruments Incorporated
Submit Documentation Feedback
Product Folder Links: TPS653851A-Q1
3
TPS653851A-Q1
SLVSF97 – JANUARY 2020
www.ti.com
Table of Contents
1
2
3
Device Overview ......................................... 1
3.2
Documentation Support
1.1
Features .............................................. 1
3.3
Receiving Notification of Documentation Updates ... 5
1.2
Applications ........................................... 1
3.4
Support Resources ................................... 5
1.3
Description ............................................ 2
3.5
Trademarks ........................................... 5
1.4
Typical Application Diagram .......................... 3
3.6
Electrostatic Discharge Caution ...................... 5
Revision History ......................................... 4
Device and Documentation Support ................. 5
3.7
Glossary .............................................. 5
3.1
4
Related Links ......................................... 5
..............................
5
Mechanical, Packaging, and Orderable
Information ................................................ 5
2 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
4
DATE
REVISION
NOTES
January 2020
*
Initial Release
Revision History
Copyright © 2020, Texas Instruments Incorporated
Submit Documentation Feedback
Product Folder Links: TPS653851A-Q1
TPS653851A-Q1
www.ti.com
SLVSF97 – JANUARY 2020
3 Device and Documentation Support
3.1
Related Links
The table below lists quick access links. Categories include technical documents, support and community
resources, tools and software, and quick access to order now.
3.2
3.2.1
Documentation Support
Related Documentation
For related documentation see the following:
• Texas instruments, DRV3201-Q1 3 Phase Motor Driver-IC for Automotive Safety Applications data
sheet
• Texas instruments, DRV3205-Q1 Three-Phase Automotive Gate Driver With Three Integrated Current
Shunt Amplifiers and Enhanced Protection, Diagnostics, and Monitoring data sheet
3.3
Receiving Notification of Documentation Updates
To receive notification of documentation updates, navigate to the device product folder on ti.com. In the
upper right corner, click on Alert me to register and receive a weekly digest of any product information that
has changed. For change details, review the revision history included in any revised document.
3.4
Support Resources
TI E2E™ support forums are an engineer's go-to source for fast, verified answers and design help —
straight from the experts. Search existing answers or ask your own question to get the quick design help
you need.
Linked content is provided "AS IS" by the respective contributors. They do not constitute TI specifications
and do not necessarily reflect TI's views; see TI's Terms of Use.
3.5
Trademarks
PowerPAD, E2E are trademarks of Texas Instruments.
3.6
Electrostatic Discharge Caution
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
3.7
Glossary
TI Glossary This glossary lists and explains terms, acronyms, and definitions.
4 Mechanical, Packaging, and Orderable Information
The following pages include mechanical, packaging, and orderable information. This information is the
most current data available for the designated devices. This data is subject to change without notice and
revision of this document. For browser-based versions of this data sheet, refer to the left-hand navigation.
Copyright © 2020, Texas Instruments Incorporated
Mechanical, Packaging, and Orderable Information
Submit Documentation Feedback
Product Folder Links: TPS653851A-Q1
5
PACKAGE OPTION ADDENDUM
www.ti.com
6-Feb-2020
PACKAGING INFORMATION
Orderable Device
Status
(1)
O3851AEDCARQ1
ACTIVE
Package Type Package Pins Package
Drawing
Qty
HTSSOP
DCA
48
2000
Eco Plan
Lead/Ball Finish
MSL Peak Temp
(2)
(6)
(3)
Green (RoHS
& no Sb/Br)
NIPDAU
Level-3-260C-168 HR
Op Temp (°C)
Device Marking
(4/5)
-40 to 150
O3851A
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of