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Application Note

Three Methods to Power Automotive Infotainment andCluster Designs

Sydney Maurice
ABSTRACTThis application note describes the three methods for powering an automotive infotainment and cluster systemusing Texas Instruments' scalable Power Management Integrated Circuits (PMIC). The recommended power
design depends on the business case, time to market, and required deliverables for the project. These factors
determine whether a custom, catalog, or user-programmable design is most appropriate for the customer’sproject.
The first option for selecting a PMIC is a catalog programmed device. These PMICs are programmed andavailable on ti.com. For 7+ rail processors, TPS65219-Q1 powers systems with applications needing 3 Bucks
and 4 LDOs. For higher current applications requiring over 4A, the FlexPower portfolio (LP8732-Q1, LP8733-Q1,LP8752x-Q1, and LP8756x-Q1) offers configurability to maximize rail usage and size.
For projects requiring programmable settings that are different from available catalog PMICs, a custom
programmed device can be considered to meet the customer’s specifications. Custom programmed PMICsmust have a qualifying business case and at least six months before releasing the PMIC to market. TI will
support samples of the device prior to production for the customer to verify and change the settings as needed
to optimize the design for the use case. TPS65219-Q1 and the FlexPower product line are available for custom
programming for infotainment and cluster applications.
If a faster time to market is needed and an existing catalog PMIC does not meet the programming
requirements, the user-programmable TPS6521905-Q1 is available on ti.com. The companion user-friendly GUIand programming guide make using this device simple and accessible. TI’s best in class customer service isavailable to provide support in the programming process.

Table of Contents
1 Introduction.............................................................................................................................................................................22 PMICs Pre-Programmed for Target SoCs............................................................................................................................. 2
2.1 TPS65219-Q1: Pre-Programmed PMIC for 7+ Rail Processors........................................................................................ 2
2.2 LP8732-Q1, LP8733-Q1, LP8752X-Q1, LP8756X-Q1: Multi-Phase Configurable FlexPower PMICs for Processor
Attach....................................................................................................................................................................................43 Custom Programmed PMICs................................................................................................................................................. 64 TPS6521905-Q1: User-Programmable PMIC........................................................................................................................ 75 Summary................................................................................................................................................................................. 7
6 References.............................................................................................................................................................................. 7Trademarks
Sitara™ is a trademark of Texas Instruments.
All trademarks are the property of their respective owners.

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1Introduction

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1 Introduction
Complex and interactive infotainment products enhance the in-vehicle experience with real-time diagnostics
and engaging displays. Premium audio amplifiers, head units, and rear seat entertainment are a few of thefeatures that drive an integrated cabin experience. These sophisticated systems require reliable and optimized
power designs. Small, flexible, optimized power designs with accessible support minimize development timeand advance the system power technology. TIs' infotainment and cluster Power Management Integrated Circuit(PMIC) portfolio offers a range of configuration options to support requirements for powering an automotivesystem. Depending on the customer’s needs, TI offers three methods for providing customers with an optimized
power design: catalog, custom, or user-programmable devices.
Table 1-1. PMIC Power Designs Overview
Design Type
Business Case Required

Catalog Programmed

Custom Programmed

User-Programmable

NoYes

No

Factory Programmed

Yes

Yes

No

Availability

ti.comContact your local TI sales officeti.comUser Guides for selectprocessors

Custom Technical Reference
Manual available at release tomarket

NVM Programming guideNo

Yes: PPAP, Data sheet with POA,
Custom OTP topside marking

No

Design Resources Available
Custom Deliverables
Customizable NVM

NoYes

Yes

Time to Market

FastestFastFaster

Support Multiple System on aChipVaries

CustomYes

2 PMICs Pre-Programmed for Target SoCsMost infotainment and cluster designs do not require advanced integrated functional safety features, making
this application opportune for an optimized power design. For a variety of popular processors, user guides andreference designs are available on the Power for Embedded Systems tool for easy device selection and systemdesign using catalog orderable parts available on TI.com.

2.1 TPS65219-Q1: Pre-Programmed PMIC for 7+ Rail Processors
To power systems similar to AM62x Sitara™ processors, TPS65219-Q1 offers functional safety-capable features
without added overhead. Reference designs and technical reference manuals are available for easy set up. Withthe small 5x5mm package, TPS65219-Q1 has a compact footprint given the excellent powering capabilities. Forapplications requiring advanced functional safety with an ASIL-B target, consider selecting TPS65224-Q1, which
offers functionality with AM62x-Q1 plus advanced functional safety features.
TPS65219-Q1 has three buck converters and four low-dropout regulators optimized to support systems with up
to 14+ rails (2x TPS65219-Q1, 7 rails each). Buck1 has the ability to supply up to 3.5A core rail, and Buck2and Buck3 each support up to 2A. The default output voltages for each buck converter can be selected throughI2C interface. With the GPIO pin, multiple TPS65219-Q1 devices can be synchronized for access to additional
power rails. Safety features such as undervoltage sensing and temperature thresholds can be set to meet therequirements for the system.

2Three Methods to Power Automotive Infotainment and Cluster Designs
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PMICs Pre-Programmed for Target SoCs
VSYS (2.5 Vto 5 V)

PMIC33VSYS

Pushbutton(optional)

VSYS
PVIN_Bx
PVIN_LDOx

0.6 V – V, 3.5 A
BUCK10.6 V – V, 2 A
BUCK20.6 V – V, 2 A
BUCK30.6 V – V, 400 mA
LDO10.6 V – V, 400 mA
LDO21.2 V – V, 300 mA
LDO3LDO4 1.2 V – V, 300 mA

SCL
EN/PB/VSENSE SDAnINTnRSTOUT
VSEL_SD
GPIO
MODE/STBYGPO1RESETGPO2Figure 2-1. TPS65219-Q1 Simplified Schematic
Additionally, TPS65219-Q1 has multi-function pins to adjust to the desired mode. The EN/PB/VSENSE can beconfigured as a push-button, power-fail comparator input, or a device enable pin. The MODE/RESET pin can be
set to MODE for forcing the buck-converters into PWM or permit auto-entry in PFM-mode. The RESET function
can force a cold reset and sequence down all enabled rails. The MODE/STBY pin allows the PMIC to operate ina low power mode at light load. These pins are two of the several multi-function pins that make TPS65219-Q1
customizable. Settings can be tested quickly with the available TPS65219 EVM and accompanying user-friendlyGUI.
TPS65219-Q1 shares a GUI with the non-automotive version, TPS65219.

Figure 2-2. TPS65219-Q1 Graphical User Interface

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PMICs Pre-Programmed for Target SoCs

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Figure 2-3. TPS65219-Q1 Register Map

2.2 LP8732-Q1, LP8733-Q1, LP8752X-Q1, LP8756X-Q1: Multi-Phase Configurable FlexPowerPMICs for Processor Attach
The FlexPower product line (LP8732-Q1, LP8733-Q1, LP8752x-Q1, and LP8756x-Q1) is a second option for
flexible, optimized PMICs for processor attach. FlexPower devices offer automotive-grade features with multiphase configurability, making them designed for a variety of systems on a chip. FlexPower PMICs have thescalability of discrete components, as well as the sequencing and monitoring features of a PMIC. The scalability
enables all rails to be utilized strategically and optimized for a specific system.
With 2-4 buck converters per device, FlexPower PMICs are small and can be combined to expand their power
rail count to match the system’s exact requirements. Their flexible configurability allows for optimized regulator
usage. Additionally, I2C configurability allows programming of settings at start-up. FlexPower PMICs are an
optimized portfolio for reducing the power footprint and improving the board layout with helpful scalability andminimized device count.
Contact your local TI sales for additional support and resources.
Table 2-1. Key Infotainment and Cluster Processor Power Designs
Processor Vendor

Texas Instruments

4Processor Family

TI PMIC Design

Available Resources

SitaraAM62x-Q1

TPS65219-Q1••

Powering the AM62x with the TPS65219 PMIC
TPS65219-Q1 Product Folder

Sitara AM62A/P-Q1

TPS65224-Q1•TPS652224-Q1 Product Folder

Jacinto DRA78x

TPS65219-Q1•TPS65219-Q1 Product Folder

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PMICs Pre-Programmed for Target SoCs

Table 2-1. Key Infotainment and Cluster Processor Power Designs (continued)
Processor Vendor

Processor Family

TI PMIC Design

Available Resources

X9SP

LP87521-Q1
LP87562/3-Q1••

User Guide Pending
The Benefits of FlexPower PMIC Devices

X9P/U

LP87521/4-Q1
LP87561/2-Q1
LP8732-Q1••

Power Supply Design for SemiDrive X9P/X9U
The Benefits of FlexPower PMIC Devices•X9H

LP87523-Q1
LP87565-Q1•

Power Supply Design for SemiDrive X9H Using
LP875230C-Q1 and LP87565V-Q1
The Benefits of FlexPower PMIC Devices

SemiDrive

NXPRenesas

X9CC

LP87524-Q1
LP87565-Q1LP8732-Q1••User Guide Pending
The Benefits of FlexPower PMIC Devices

i.MX 8 / 9TPS65219-Q1
OrLP875640-Q1
LP8733-Q1••TPS65219-Q1 Product Folder
Power Supply Design for NXP i.MX 8 Using theLP875640- Q1 and LP8733-Q1

R-Car M3/W/N

LP87565-Q1
LP8732-Q1
LP87334A-Q1•

Power Supply Design for Renesas R-Car M3 Using
LP87565U-Q1, LP873245-Q1, and LP87334A-Q1

R-Car D3LP87524-Q1•LP8752x-Q1 Configuration Guide

R-Car H3LP87561-Q1
LP87562-Q1LP87524-Q1••

LP8756x-Q1 Configuration Guide
LP8752x-Q1 Configuration Guide

TCC8050/53

LP87563-Q1LP8733-Q1•LP8756x-Q1 Configuration Guide

TCC8059

LP87563-Q1
LP87524-Q1•LP8756x-Q1 Configuration Guide

TCC803xTPS65219-Q1
TPS65224-Q1
OrTPS6593-Q1•••

TPS65219-Q1 Product Folder
TPS652224-Q1 Product Folder
TPS6593-Q1 Product Folder

MT2712

TPS6593-Q1•TPS6593-Q1 Product Folder

MT2712P/S/H/E

LP87563-Q1
TPS65917-Q1•LP8756x-Q1 Configuration Guide

MT2712M

TPS65919-Q1LP8733-Q1•LP8733-Q1 and LP8732-Q1 Configuration Guide

MT2712C

TPS65919-Q1LP87522-Q1•LP8752x-Q1 Configuration Guide

AC8015

LP87522-Q1
LP8732-Q1•Power Supply Design for AC8015 Using LP87522EQ1and LP873244-Q1

AC8025

TPS6593-Q1•TPS6593-Q1 Product FolderTelechips

MediaTekAutoChips

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Custom Programmed PMICs

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3 Custom Programmed PMICs
If a PMIC with the customer’s desired configuration is not available in TI’s online catalog, a custom PMIC
programmed to meet the customer’s requirements can be proposed. Once the PMIC has been selected, thePMIC team can work with each customer to evaluate the business case and determine whether a custom design
can be supported. Upon confirmation, the customer can be provided with samples to refine their OTP settings.
The PMIC team can work with the customer throughout the design and evaluation process to provide samples
that meet the customer’s deadlines. The team can redefine the OTP for the correct definition to match thecustomer’s requirements.
After the OTP has been approved and finalized by the customer, the custom PMIC can be released to market in
4-6 months. The customer can receive a customer orderable production part number, a PPAP, and the ability toplace large quantity orders upon release.
Customers can contact a local TI sales office to work with a TI representative to support their project plan.
Redefine and sample
the OTP for the correct
defintion to meet thecustomer’srequirements.

PHASE 1PHASE 2

PHASE 3

PHASE 4

EVALUATION OF
EXISTING SOLUTIONS
Submit a business caseto your local TI Sales officefor the marketing teamto review, orconsider a user
programmablePMIC.

OTP / NVM DEFINITIONSAMPLE PHASE

RELEASE PHASE

Request samples
to test and refine
the OTP.
Lead time forsamples varies
based onQuantities.

RTM date is set basedon customer’s start ofproduction timeline.
OTP is finalized
6 months prior toRTM

The OTP is released
to market.
PPAP, production partnumber, and open
order entry for largequantites
are available.

Figure 3-1. Custom Programmed PMIC Design Process
Table 3-1. Infotainment and Cluster PMIC Specification Comparison

6GPN

LP8732-Q1

LP8733-Q1

LP8752x-Q1

LP8756x-Q1

TPS65219-Q1

TPS6521905-Q1

Buck1

2A

3A

4A

4A

3.5A

3.5A

Buck2

2A

3A

3A

4A

2A

2A

Buck3--

2A

4A

2A

2A

Buck4--

1A

4A

--

Multi-Phase Buck
Converters

Yes

Yes

Yes

Yes

No

No

Max Current per MultiPhase

4A

6A

10A

16A

--

LDO1/ LSW

0.3A

0.3A

--0.3A

0.3A

LDO2/ LSW

0.3A

0.3A--

0.3A

0.3A

LDO3/ LSW----0.4A

0.4A

LDO4/ LSW----0.4A

0.4A

I2C

Yes

Yes

Yes

Yes

Yes

Yes

Push/Enable Pin

No

No

NoNo

Yes

Yes

User-Programmable

No

NoNo

NoNo

Yes

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TPS6521905-Q1: User-Programmable PMIC

4 TPS6521905-Q1: User-Programmable PMICFor easy customization and rapid sample testing, a user-programmable PMIC with a generic OTP offers
excellent flexibility for the customer to change the power rail voltages and sequencing in minutes.
For infotainment applications, TPS6521905-Q1 captures the features of TPS65219-Q1 with the additional
capability of user programmability that allows changes to the system settings during the design process forfast prototyping. TPS6521905-Q1 empowers customers to use a blank OTP PMIC to create a custom programfor projects with a short timeline or without a large volume business case.
This user-programmable PMIC removes the need for external resistors, a microcontroller, or factory
programming. Instead, the PMIC can be programmed, and reprogrammed, using I2C communication to refine
the PMIC to meet the exact specifications desired. Rather than requiring new parts for every change to the PMIC
settings, a single chip can be reprogrammed to refine the settings needed for several applications. The user
programming guide supports rapid custom device generation that cuts down on development time and improves
accessibility to custom programmed settings.
The user-programmable PMIC TPS6521905-Q1 is a fast, flexible, and accessible device for a custom
infotainment PMIC.

5 SummaryCustom, catalog, and user-programmable PMICs provide options for powering infotainment and cluster systems.
FlexPower PMICs and TPS65219-Q1 have pre-programmed parts in TI’s catalog with many user guides
available to power popular processors. However, if an OTP part for the desired processor does not exist, acustom OTP can be created, dependent upon meeting business case requirements. If a custom OTP is not theright fit, TPS6521905-Q1 offers a user-programmable device available for any use case.
Regardless of the method of programming, TI’s PMIC portfolio has flexible, optimized devices available to meetthe requirements of infotainment and cluster applications.

6 References••••

Texas Instruments, Learn About TI's Automotive PMIC Portfolio and TPS65219-Q1 for Powering Sitara
AM62x-Q1.
Texas Instruments, TPS65219-Q1 Automotive Power Management Integrated Circuit (PMIC) for ARM®
Cortex®-A53 Processors.
Texas Instruments, The Benefits of FlexPower PMIC Devices, application brief.
Texas Instruments, TPS6521905-Q1 Automotive User-Programmable Integrated Power Management IC for
ARM Cortex - A53 Processors.

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