Texas Instruments TPS650320-Q1 User manual

User’s Guide
TPS650320-Q1 EVM User's Guide
Table of Contents
1 Introduction.............................................................................................................................................................................2
2 EVM Configurations................................................................................................................................................................2
2.1 Requirements.....................................................................................................................................................................2
2.2 Operation Instructions........................................................................................................................................................ 3
2.3 Configuring the USB to I2C Adapter...................................................................................................................................3
2.4 Regulator Input Supplies and Features..............................................................................................................................3
2.5 Selecting the Logic Supply Voltage....................................................................................................................................5
3 Test Points...............................................................................................................................................................................6
3.1 Voltage Test Points.............................................................................................................................................................6
4 Graphical User Interface........................................................................................................................................................ 7
4.1 TPS650320-Q1 EVM Debugging....................................................................................................................................... 7
4.2 Navigating the GUI...........................................................................................................................................................10
4.3 Re-Program PMIC............................................................................................................................................................15
4.4 In-Circuit Programming.................................................................................................................................................... 16
5 Typical Performance Plots................................................................................................................................................... 18
5.1 Power Sequence Plots.....................................................................................................................................................18
5.2 Load Transient Plots........................................................................................................................................................ 18
5.3 Output Voltage Ripple Plots............................................................................................................................................. 19
5.4 Efficiency Plots.................................................................................................................................................................20
5.5 LDO Output Noise............................................................................................................................................................21
6 TPS650320-Q1 EVM Schematic........................................................................................................................................... 22
7 TPS650320-Q1 EVM PCB Layers.........................................................................................................................................23
8 TPS650320-Q1 EVM Bill of Materials.................................................................................................................................. 29
Trademarks
Windows® are registered trademarks of Microsoft Corporation.
macOS® and Mac® are registered trademarks of Apple Inc.
Linux® are registered trademarks of Linus Torvalds.
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All other trademarks are the property of their respective owners.
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TPS650320-Q1 EVM User's Guide 1
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1 Introduction
The TPS650320-Q1 device is a highly-integrated PMIC for automotive camera modules. This device combines
three step down converters and one low-dropout (LDO) regulator. The BUCK1 step-down converter has an input
voltage range up to 18.3 V for connections to power over coax. All converters operate in a forced fixed-
frequency PWM mode. The LDO can supply 300 mA and operate with an input voltage range from 2.2 V to 5.5
V. The step-down converters and the LDO have separate voltage inputs that enable maximum design and
sequencing flexibility.
2 EVM Configurations
The following sections outline how to configure the TPS650320-Q1 EVM for general experimentation.
Figure 2-1. TPS650320-Q1 EVM Top View
2.1 Requirements
• Computer with Windows®, macOS®, or Linux® operating system
• Camera PMIC GUI (Link Here)
• Micro-USB Cable
• TPS650320-Q1 EVM
• DC Power Supply (4.5 V to 19 V)
– Banana Cables for Power and GND
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2.2 Operation Instructions
1. Ensure that the USB to I2C Adapter is configured properly using the jumpers mentioned in Configuring the
USB to I2C Adapter. This will be the default configurations defined in the tables for most applications.
2. Configure regulator input supply rails for the expected application using the jumpers mentioned in Regulator
Input Supplies and Features. Take extra care not to exceed absolute maximum ratings when VSYS supplies
BUCK2, BUCK3, or the LDO.
3. Connect Micro-USB to a PC capable of loading the Camera PMIC GUI.
4. Connect VSYS to a power supply capable of supporting the application and enable the supply. Typical supply
voltage is 12 V. The PMIC will boot automatically as VSYS is applied.
5. The Buck 1 and Buck 2 regulators will power up automatically once a sufficient VSYS voltage is applied.
6. Set the SEQ switch (S1) to On to enable the Buck 3 and LDO regulators.
7. Load the Camera PMIC GUI and ensure the adapter has been recognized by the PC. Refer to TPS650320-
Q1 EVM Debugging if the GUI says Hardware not connected.
8. The GUI will attempt to read all registers and update the register map once the adapter is connected.
2.3 Configuring the USB to I2C Adapter
An onboard MCU acts as a USB adapter to the PMIC. This adapter allows I2C communication to the host PC as
well as GPIO assertion and monitoring. By default, the onboard adapter is powered by the USB cable through an
onboard dedicated 3.3 V LDO (U4). Additional configurations are allowed by reconfiguring jumpers J18 and J19,
shown in Table 2-1 and Table 2-2. The onboard adapter must have power applied through a valid configuration.
Table 2-1. Adapter Power Source (J18)
Selection Jumper Pin Adapter Supply Bus
Pin 1 (PMIC Buck 1 Output) Pin 2 (Adapter Input Supply Rail)
Pin 3 (PMIC LDO Output) Pin 4 (Adapter Input Supply Rail)
Pin 5 (Dedicated 3.3 V LDO Output - Default) Pin 6 (Adapter Input Supply Rail)
Table 2-2. Dedicated LDO Supply for Adapter (J19)
Selection Jumper Pin Dedicated 3.3 V LDO Supply Bus
Pin 1 (PMIC Buck 1 Output) Pin 2 (Dedicated 3.3 V LDO Input Rail)
Pin 3 (PMIC Buck 1 Input) Pin 4 (Dedicated 3.3 V LDO Input Rail)
Pin 5 (VBUS Rail - Default) Pin 6 (Dedicated 3.3 V LDO Input Rail)
The following Jumpers in Table 2-3 connect the USB adapter to PMIC functional pins. These can be
disconnected for flexibility.
Table 2-3. Adapter PMIC Connections
Jumper PMIC Pin
J20 nINT
J21 nRST
J22 SEQ
J23 GPIO
2.4 Regulator Input Supplies and Features
The four regulators on the TPS650320-Q1 EVM can be supplied with multiple supplies. The following tables
show the possible supply configurations in addition to key specifications and programmable features for each
regulator.
2.4.1 Buck 1 Input Supply
Table 2-4. Buck 1 Power Source (J33)
Selection Jumper Pin Buck1 Supply Bus
Pin 1 (VSYS - Default) Pin 2 (Buck 1 Input Supply Rail)
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2.4.2 Mid-Vin Buck1 Features
Table 2-5. Mid-Vin (Buck1) Features
Feature Specification
Input Voltage Range 4 V to 18.3 V
Operating Current Maximum of 800 mA
Current Limiting 1.5 A to 2.5 A
Status Monitoring UVLO, UV, HOT, OVP, SCG, and OCP
Over-Voltage Protection (OVP) VOUT = 109% to 115%
Short-Circuit Threshold (SCG) VOUT = 250 mV to 350 mV
Table 2-6. Mid-Vin (Buck1) Configurable Settings
Feature Configurable Range
Output Voltage 2.5 V to 4.0 V
PVIN_B1 UVLO Rising 3.64 V to 9.36 V
PVIN_B1 UVLO Falling 3.5 V to 9 V
Output Discharge Disabled, 125 Ω, 250 Ω, and 500 Ω
Sequencing Enable, Dependencies, and Fault RST
Sequence Delay (Off and On) 0 ms to 20 ms
Note: Over-voltage monitor settings are available for the TPS650331-Q1, TPS650332-Q1, and TPS650333-Q1.
2.4.3 Buck 2 Input Supply
Table 2-7. Buck 2 Power Source (J15)
Selection Jumper Pin Buck2 Supply Bus
Pin 1 (VSYS) Pin 2 (Buck 2 Input Supply Rail)
Pin 3 (Buck1 Output Rail - Default) Pin 4 (Buck 2 Input Supply Rail)
2.4.4 Buck 3 Input Supply
Table 2-8. Buck 3 Power Source (J16)
Selection Jumper Pin Buck3 Supply Bus
Pin 1 (VSYS) Pin 2 (Buck 3 Input Supply Rail)
Pin 3 (Buck1 Output Rail - Default) Pin 4 (Buck 3 Input Supply Rail)
2.4.5 Low-Vin Buck2 and Buck3 Features
Table 2-9. Low-Vin (Buck2 and Buck3) Features
Feature Specification
Input Voltage Range 2.5 V to 5.5 V
Operating Current Maximum of 600 mA
Current Limiting 1.2 A to 2.5 A
Status Monitoring UV, HOT, OVP, SCG, and OCP
Over-Voltage Protection (OVP) VOUT = 109% to 115%
Short-Circuit Threshold (SCG) VOUT = 250 mV to 350 mV
Table 2-10. Low-Vin (Buck2 and Buck3) Configurable Settings
Feature Configurable Range
Output Voltage 0.9 V to 1.9 V
Under-Voltage Flags (UV) VOUT = 94.5%, 95%, 95.5%, and 96%
Spread Spectrum Enable or Disable
Sequencing Enable, Dependencies, and Fault RST
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Table 2-10. Low-Vin (Buck2 and Buck3) Configurable Settings (continued)
Feature Configurable Range
Sequence Delay (Off and On) 0 ms to 20 ms
Note: Over-voltage monitor settings are available for the TPS650331-Q1, TPS650332-Q1, and TPS650333-Q1.
2.4.6 Low Noise LDO Input Supply
Table 2-11. PMIC LDO Power Source (J8)
Selection Jumper Pin PMIC LDO Supply Bus
Pin 1 (VSYS) Pin 2 (PMIC LDO Input Supply Rail)
Pin 3 (Buck1 Output Rail - Default) Pin 4 (PMIC LDO Input Supply Rail)
Pin 5 (Buck2 Output Rail) Pin 6 (PMIC LDO Input Supply Rail)
Pin 7 (Buck3 Output Rail) Pin 8 (PMIC LDO Input Supply Rail)
2.4.7 Low Noise LDO Features
Table 2-12. Low Noise LDO Features
Feature Specification
Input Voltage Range 2.5 V to 5.5 V
Operating Current Maximum of 150 mA or 300 mA
Current Limiting Minimum of 200 mA or 400 mA
Status Monitoring UV, HOT, OVP, SCG, and OCP
Over-Voltage Protection (OVP) VOUT = 109% to 115%
Short-Circuit Threshold (SCG) VOUT = 250 mV to 350 mV
Table 2-13. Low Noise LDO Configurable Settings
Feature Configurable Range
Output Voltage 1.8 V, or 2.7 V to 3.3 V
Under-Voltage Flags (UV) VOUT = 94.5%, 95%, 95.5%, and 96%
Load Switch Mode Enable or Disable
Current Limit 200 mA, 400 mA
Sequencing Enable, Dependencies, and Fault RST
Sequence Delay (Off and On) 0 ms to 20 ms
Note: Over-voltage monitor settings are available for the TPS650331-Q1, TPS650332-Q1, and TPS650333-Q1.
2.5 Selecting the Logic Supply Voltage
Table 2-14. VIO Power Source (J8)
Selection Jumper Pin VIO Supply Bus
Pin 1 (Buck1 Output Rail - Default) Pin 2 (VIO Input Supply Rail)
Pin 3 (Buck2 Output Rail) Pin 4 (VIO Input Supply Rail)
Pin 5 (Buck3 Output Rail) Pin 6 (VIO Input Supply Rail)
Pin 7 (PMIC LDO Output Rail) Pin 8 (VIO Input Supply Rail)
Pin 9 (Dedicated 3.3 V LDO) Pin 10 (VIO Input Supply Rail)
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3 Test Points
3.1 Voltage Test Points
The TPS650320-Q1 EVM contains 30 test points for various measurements. Trace assignments to the test
points are shown in Table 3-1. For reference, Figure 3-1 demonstrates the test point locations on the EVM.
Table 3-1. TPS650320-Q1 EVM Test Points
Test Point Number Associated Trace
TP1 SCL
TP2 VREG
TP4 Buck 1 Output
TP5 VBUS
TP6 SDA
TP7 V1P8_INT
TP9 PMIC LDO Input
TP10 SEQ
TP11 nRSTOUT
TP12 Buck 2 Output
TP13 Buck 2 Input
TP14 VIO
TP15 Buck 3 Output
TP16 Buck 3 Input
TP17 PMIC LDO Output
TP18 Buck 1 Input
TP19 GND
TP20 GND
TP21 USBD_N
TP22 GND
TP23 GND
TP24 VSYS
TP25 GND
TP26 GND
TP27 GND
TP28 GND
TP29 USBD_P
TP30 GND
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Figure 3-1. TPS650320-Q1 EVM Test Point Locations
4 Graphical User Interface
The Graphical User Interface (GUI) for the EVM can be found in the Gallery at TI DevTools. The GUI can be
operated through Google Chrome® or Mozilla Firefox® web browsers. To run the GUI in the browser, click the
thumbnail and follow the prompted instructions for first time installation. The GUI requires both a browser plugin
and the TI Cloud Agent software for access to the local USB ports. The GUI can also be downloaded for offline
operation by hovering over the downward arrow in the GUI thumbnail and selecting the desired platform –
Windows®, Mac®, or Linux®
4.1 TPS650320-Q1 EVM Debugging
Refer to to debug potential issues while using the TPS650320-Q1 EVM.
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Figure 4-1. TPS650320-Q1 EVM Debugging Flow Chart
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4.1.1 I2C Communication Port and Adapter Debugging
By default, the GUI will recognize two serial ports from the EVM adapter, but may not select the I2C bridge
automatically. Once the EVM is powered and the USB cable is connected to the computer, click the connect icon
at the bottom left of the GUI. If the bottom notification updates to Hardware Not Selected:
1. Click the Options menu at the top of the GUI, select Serial Port.
Figure 4-2. Opening Serial Port Options
2. Use the Ports dropdown to select the alternative interface.
Figure 4-3. Selecting an Alternate Port
After clicking OK, the GUI should connect to the device properly. If communication to the EVM is lost, most
issues can be resolved by pressing the nRST_MCU button (S3) on the EVM. Afterwards, further issues can be
diagnosed by confirming that MCU_IN (J18) is still present, and that the I2C pull-up domain is still active.
4.1.2 Updating MCU Firmware
If the EVM on-board MCU is showing up under the Device Manager with a Stellaris... title, the MCU firmware
needs to be updated to communicate with the GUI. One way to do this is with TI's free LM Flash Programmer
tool. Once the firmware is updated, the MCU should show up as ACCtrl... COM ports in the Device Manager.
1. Download the GUI source files from the Gallery. The EVM firmware is the .bin file located in the
install_image_TPS6503xx-Q1_GUI/TPS6503xx-Q1_GUI/app/firmware folder.
2. Open LM Flash Programmer with the EVM connected through USB.
3. Select USB DFU in the Configuration tab. The Stellaris device should show in the device list box after
refreshing.
4. Select the Program tab.
5. Browse to the .bin file downloaded from the GUI.
6. Leave all other settings as default.
7. Click Program.
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4.2 Navigating the GUI
The GUI contains the following five sections, selectable on the left side of the GUI or by clicking the Menu tab in
the top left corner.
• Home
• Block Diagram
• Registers
• Device Configuration
• Re-Program PMIC
4.2.1 Home
The Home section is the landing page of the GUI. Here the GUI presents an overview of the EVM and
Programming BoosterPack (BOOSTXL-TPS65033), and emphasize navigation to the remaining four sections
through the tiles on the bottom of the page.
Figure 4-4. TPS6503xx-Q1 GUI Home Screen
4.2.2 Block Diagram
The Block Diagram section displays the typical components and functional blocks of the PMIC. A block diagram
for the Programming BoosterPack is also shown.
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