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300, which sets the board to output to approximately 519 mA. The

Fault Timer

is set to 4 ms. The LHI

Ref: LHi

box is not selected; therefore the reference for limp home is internal.

Figure 6-27. Example Limp Home Mode Settings

TPS92520EVM-133 Power UP and Operation

www.ti.com

TPS92520EVM-133 Dual 1.6-A Synchronous Buck LED Driver Evaluation
Module

SLUUCC4 – OCTOBER 2020

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Содержание TPS92520EVM-133

Страница 1: ...for LEDMCUEVM 132 Board 19 5 2 Step by Step Installation Instructions 19 5 3 Installation Error Recovery 29 5 4 Checking for Updates 30 6 TPS92520EVM 133 Power UP and Operation 34 6 1 MCU Control Wind...

Страница 2: ...d 41 Figure 6 13 Device Command Window 42 Figure 6 14 Devices Window After Watchdog is Disabled 43 Figure 6 15 Channel 1 Window Configurations Measurement and Fault Window 44 Figure 6 16 Analog Curren...

Страница 3: ...esent in the area where the TI HV EVM and its interface electronics are energized indicating operation of accessible high voltages may be present for the purpose of protecting inadvertent access d All...

Страница 4: ...with side shields or protect EVM in an adequate lucent plastic box with interlocks from accidental touch Limitation for safe use EVMs are not to be used as all or part of a production unit General Tex...

Страница 5: ...ation of the TPS92520 Q1 as dual synchronous buck constant current CC LED driver with the specifications listed in Table 2 1 For applications with a different input voltage range or different output v...

Страница 6: ...pins 2 to 4 connects VIN1 to VIN2 Jumpers from pin 1 to 2 and pin 3 to 4 connect VIN1 VIN2 and VIN all together this is the default configuration J6 SPI configuration J6 allow for the ability to setup...

Страница 7: ...es both channels in Limp home and standalone mode nFLT TP7 The nFLT test point can be used to monitor if a fault has occurrence in the TPS92520 Q1 When a fault occurs nFLT voltage level goes low Read...

Страница 8: ...ons Parameter Description Min Typ Max Units Input Characteristics Voltage VIN 4 5 50 65 V Maximum Input Current IIN 4 A Output Characteristics Output Voltage VOUT Maximum voltage configured by the out...

Страница 9: ...waveforms of the channel 1 and channel 2 of the TPS92520EVM 133 dual channel BUCK LED driver The switch node SW1 and SW2 of the two channels that are completely independent of each other SW1 and SW2...

Страница 10: ...at 50 duty cycle at 610 Hz PWM frequency The VLED waveform channel 2 of the osope and the ILED waveform channel 4 of the oscope shows the resulting undershoot and overshoot VIN 48 V VLED1 28 V ILED1 1...

Страница 11: ...the TPS92520EVM 133 schematic www ti com Schematic PCB Layout and Bill of Materials SLUUCC4 OCTOBER 2020 Submit Document Feedback TPS92520EVM 133 Dual 1 6 A Synchronous Buck LED Driver Evaluation Modu...

Страница 12: ...tic Page 1 Schematic PCB Layout and Bill of Materials www ti com 12 TPS92520EVM 133 Dual 1 6 A Synchronous Buck LED Driver Evaluation Module SLUUCC4 OCTOBER 2020 Submit Document Feedback Copyright 202...

Страница 13: ...ottom side of the TPS92520EVM 133 PCB layout The Inner layer 1 is a ground plane and there is no routing on this layer Figure 4 3 TPS92520EVM 133 Assembly Drawing www ti com Schematic PCB Layout and B...

Страница 14: ...Figure 4 5 TPS92520EVM 133 Inner Layer 1 Schematic PCB Layout and Bill of Materials www ti com 14 TPS92520EVM 133 Dual 1 6 A Synchronous Buck LED Driver Evaluation Module SLUUCC4 OCTOBER 2020 Submit D...

Страница 15: ...Bottom Layer and Bottom Overlay Bottom View www ti com Schematic PCB Layout and Bill of Materials SLUUCC4 OCTOBER 2020 Submit Document Feedback TPS92520EVM 133 Dual 1 6 A Synchronous Buck LED Driver...

Страница 16: ...F 10 V 5 X7R AEC Q200 Grade 1 0805 C0805C475J8RACAUTO Kemet D1 D2 2 75 V Diode Switching 75 V 0 15 A AEC Q101 SOD 323 1N4148WS 7 F Diodes Inc D3 1 24 V Diode TVS Uni 24 V 44 3 Vc AEC Q101 SMA SMA6T28...

Страница 17: ...5 k 1 0 1 W AEC Q200 Grade 0 0603 CRCW060316K5FKEA Vishay Dale R4 R17 2 23 2 k RES 23 2 k 1 0 1 W AEC Q200 Grade 0 0603 CRCW060323K2FKEA Vishay Dale R5 R11 R14 R18 R21 5 100 k RES 100 k 1 0 1 W AEC Q...

Страница 18: ...Keystone U1 1 4 5 to 65 V Input Dual 1 6 A Synchronous Buck LED Driver with SPI Control DAD0032A TPS92520QDADTQ1 Texas Instruments U2 1 300mA High Voltage Ultra Low Iq Low Dropout LDO Regulator DGN00...

Страница 19: ...icense terms and install in the recommended location Installation will take a few minutes as it may need to install Microsoft NET Framework If the installer asks if you wish to reboot after installing...

Страница 20: ...ext to install the evaluation software the UniFlash and the required XDS drivers Full installation for both Windows 10 and 7 are provided Software www ti com 20 TPS92520EVM 133 Dual 1 6 A Synchronous...

Страница 21: ...ramework 4 5 or higher exists on the computer the installation jumps to the XDS driver installation Figure 5 5 Setup Screen 5 A window appears indicating the completion of the NET Framework installati...

Страница 22: ...5 7 Setup Screen 7 Click the Next button to install the XDS driver Software www ti com 22 TPS92520EVM 133 Dual 1 6 A Synchronous Buck LED Driver Evaluation Module SLUUCC4 OCTOBER 2020 Submit Document...

Страница 23: ...cessary drivers for running the application In the next few steps as shown in Figure 5 9 Figure 5 10 and Figure 5 11 click Next to perform the installation Figure 5 9 Setup Screen 9 www ti com Softwar...

Страница 24: ...se agreement in Figure 5 10 Figure 5 11 Setup Screen 11 Software www ti com 24 TPS92520EVM 133 Dual 1 6 A Synchronous Buck LED Driver Evaluation Module SLUUCC4 OCTOBER 2020 Submit Document Feedback Co...

Страница 25: ...creen 12 Figure 5 13 Setup Screen 13 The screen showing the completion of the TI Emulators installation is shown in Figure 5 13 Click on Finish to move to the next step www ti com Software SLUUCC4 OCT...

Страница 26: ...ure 5 14 Figure 5 15 and Figure 5 16 click Next to proceed and start the installation Figure 5 14 Setup Screen 14 Figure 5 15 Setup Screen 15 Software www ti com 26 TPS92520EVM 133 Dual 1 6 A Synchron...

Страница 27: ...stallation is complete click Finish to launch the UniFlash and program the LaunchPad www ti com Software SLUUCC4 OCTOBER 2020 Submit Document Feedback TPS92520EVM 133 Dual 1 6 A Synchronous Buck LED D...

Страница 28: ...TPS92520 Q1 Evaluation Software Un check the Launch Application and click Finish Software www ti com 28 TPS92520EVM 133 Dual 1 6 A Synchronous Buck LED Driver Evaluation Module SLUUCC4 OCTOBER 2020 Su...

Страница 29: ...gnature enforcement The host computer restarts 10 Repeat the entire re installation process 11 A message appears informing that installing NET failed Close that window and continue 12 Double click Ins...

Страница 30: ...to the Help menu see Figure 5 20 Figure 5 20 Help Menu and Checking for Updates Click Check for Updates to run updater Figure 5 21 Update Screen 1 Click Yes to accept risks for accessing the Internet...

Страница 31: ...press the RESET_SW1 as seen in Figure 5 23 This places the MCU in Bootloader mode Step 1 Step 2 Figure 5 23 J15 Jumper and RESET_SW1 Switch for Bootloader Mode www ti com Software SLUUCC4 OCTOBER 2020...

Страница 32: ...32 must be changed from bootloader mode to normal mode This is accomplished by removing the shorting jumper from J15 then pressing the RESET_SW1 switch and wait 3 seconds to ensure device drivers relo...

Страница 33: ...Switch for Normal Mode Click the OK button to restart the GUI www ti com Software SLUUCC4 OCTOBER 2020 Submit Document Feedback TPS92520EVM 133 Dual 1 6 A Synchronous Buck LED Driver Evaluation Module...

Страница 34: ...133 board terminal J1 Connect a resistive or a current sink load such as LEDs or diodes to the output of the EVM terminal J2 The load should not exceed maximum output current of 1 6 A and the maximum...

Страница 35: ...the EVM selection option to select the TPS92520 EVM133 PSIL133 Figure 6 3 GUI Setup Screen 2 Select 0 for Desired Address which is the default jumper setting but can be changed Click on Add Device www...

Страница 36: ...ces see Figure 6 4 1 2 3 4 Figure 6 4 TPS92520 EVM133 GUI Start up Screen TPS92520EVM 133 Power UP and Operation www ti com 36 TPS92520EVM 133 Dual 1 6 A Synchronous Buck LED Driver Evaluation Module...

Страница 37: ...e MCU PWM 1 generator signals connects to PWM1 PF2 and PWM2 PF3 on the TPS92520EVM 133 board Therefore the PWM 1 button should be selected when using the external that is controlled by the LEDMCUEVM 1...

Страница 38: ...92520 Q1 exists perform the following steps as shown in Figure 6 7 1 Write the register address eleven 0x11h which is the CH1TON register in the Register Address box 0x11 2 Double click Send TPS92520E...

Страница 39: ...iated register address Click the check box next to Write Write the desired data in the box next to Write Data as shown in Figure 6 9 www ti com TPS92520EVM 133 Power UP and Operation SLUUCC4 OCTOBER 2...

Страница 40: ...dow Single click the En 520 No WD button The button should be selected whenever using the EVM for general operation unless standalone mode wants to be initiated at start up see Figure 6 11 Figure 6 11...

Страница 41: ...s the CMWEN bit see figure Figure 6 12 Figure 6 12 GUI After the En 520 No WD Button is Selected www ti com TPS92520EVM 133 Power UP and Operation SLUUCC4 OCTOBER 2020 Submit Document Feedback TPS9252...

Страница 42: ...e the output is off and no current is driving the LEDs and the voltage at the output is less than 2 45 V on the CSP pin which indicates a SHORT condition BSTUV fault indicates that the bootstrap suppl...

Страница 43: ...uency Limp Home mode 5VD measurements fault resets sleep mode and register reads Each channel window sets the LED current Analog Current switching frequency On Time the PWM duty cycle PWM PWM source I...

Страница 44: ...has a decimal value from 0 to 1023 which coincides with voltage from 0 to 2 45 V to the V I Converter see the LED Current Regulation and Error Amplifier section of the TPS92520 Q1 data sheet for addi...

Страница 45: ...Duty Cycle Slide Bar The Enable box set the CHxEN bit to 1 for that channel which means the associated channel is turned on see Figure 6 19 Figure 6 19 Channel Feature Selection Boxes The PWM Source...

Страница 46: ...reads the CHxOFFMIN bit and indicates if the maximum duty cycle of that channel has been reached The LSILIM box reads the CHxLSILM bit and indicates that the low side switch current limit fault has o...

Страница 47: ...it is a setpoint for the thermal warning limit that is defined in the TWLMT register If the Current Temp exceeds the TW Limit then the TW bit is set The Device window also shows the measured voltage o...

Страница 48: ...the TPS92520 Q1 to its factory default settings Figure 6 24 Internal PWM Frequency Set Point Sleep Mode Reading Registers and Limp Home Mode The Faults window see Figure 6 25 allow for the selection o...

Страница 49: ...shows a fault timer that is selectable in ms A check box sets whether the limp home mode reference point is generated from the LHxIADJ registers for each channel or if the input voltage at the LHI pin...

Страница 50: ...lected therefore the reference for limp home is internal Figure 6 27 Example Limp Home Mode Settings TPS92520EVM 133 Power UP and Operation www ti com 50 TPS92520EVM 133 Dual 1 6 A Synchronous Buck LE...

Страница 51: ...ther than TI b the nonconformity resulted from User s design specifications or instructions for such EVMs or improper system design or c User has not paid on time Testing and other quality control tec...

Страница 52: ...These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not in...

Страница 53: ...instructions set forth by Radio Law of Japan which includes but is not limited to the instructions below with respect to EVMs which for the avoidance of doubt are stated strictly for convenience and s...

Страница 54: ...any interfaces electronic and or mechanical between the EVM and any human body are designed with suitable isolation and means to safely limit accessible leakage currents to minimize the risk of electr...

Страница 55: ...R DAMAGES ARE CLAIMED THE EXISTENCE OF MORE THAN ONE CLAIM SHALL NOT ENLARGE OR EXTEND THIS LIMIT 9 Return Policy Except as otherwise provided TI does not offer any refunds returns or exchanges Furthe...

Страница 56: ...e resources are subject to change without notice TI grants you permission to use these resources only for development of an application that uses the TI products described in the resource Other reprod...

Страница 57: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Texas Instruments TPS92520EVM 133...

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