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Category: Power Management

Power management integrated circuits (power management ICs or PMICs or PMU as unit) are integrated circuits for power management. A power management integrated circuit (PMIC) is used to manage power on an electronic devices or in modules on devices that may have a range of voltages. Power management ICs are solid state devices that control the flow and direction of electrical power. A PMIC may include battery management, voltage regulation, and charging functions. Although PMIC refers to a wide range of chips (or modules in system-on-a-chip devices), most include several DC/DC converters or their control part. PMICs are frequently used to power small, battery-operated devices since the integration of multiple functions into a single chip results in more efficient use of space and system power. Functions commonly integrated into a PMIC include voltage converters and regulators, Battery Mangement ICs, battery fuel gauges, LDOs, Mosfets, IGBT, LED drivers, real-time clocks, power sequencers, and power control.

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Hash Engineers
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Hash Engineers
Asked: April 4, 2024In:
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How do microcontrollers optimize power consumption to extend battery life in battery-powered devices?

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  1. ellasmith

    Hello, Microcontrollers play a vital role in optimizing power consumption to extend battery life in battery-powered devices. Here are some common techniques used by microcontrollers to achieve power optimization: Sleep Modes Clock Management Peripheral Control Power Modes Interrupts and Event-DrivenRead more

    Hello,

    Microcontrollers play a vital role in optimizing power consumption to extend battery life in battery-powered devices. Here are some common techniques used by microcontrollers to achieve power optimization:

    • Sleep Modes
    • Clock Management
    • Peripheral Control
    • Power Modes
    • Interrupts and Event-Driven Programming
    • Optimized Code
    • Dynamic Voltage Scaling
    • Power Supply Optimization

    It’s important to note that the specific power optimization techniques available and their effectiveness can vary depending on the microcontroller’s architecture and features. Hope this is helpful for you.

    Thank You

    Ella

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janecarter
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janecarter
Asked: December 22, 2023In:
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Hello,Why there is no 480…..500 MHz variants of H5, like in the H7 range?Thank You

Hello,

Why there is no 480…..500 MHz variants of H5, like in the H7 range?

Thank You

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MHzpowerSTM32H5Variants
  1. sachinsharma

    Hello, STM32H7 can apply code from RAM too. Some version figures are in the data sheets to compare. STM32H750, 480 MHz 1027 DMIPS,2.14 DMIPS/ MHz( Dhrystone2.1) ADC up to3.6 MSPS STM32H503, 250 MHz 375 DMIPS (Dhrystone2.1) 1.5 DMIPS/ MHz (Drystone2.1) 1023 CoreMark  (4.092 CoreMark/ MHz) ADC up to 2Read more

    Hello,
    STM32H7 can apply code from RAM too.
    Some version figures are in the data sheets to compare.
    STM32H750, 480 MHz 1027 DMIPS,2.14 DMIPS/ MHz( Dhrystone2.1)
    ADC up to3.6 MSPS
    STM32H503, 250 MHz 375 DMIPS (Dhrystone2.1) 1.5 DMIPS/ MHz (Drystone2.1)
    1023 CoreMark  (4.092 CoreMark/ MHz)
    ADC up to 2.5 MSPS
    So. the CM33 core doesn’t automatically supply more bang for MHz.
    Thank You

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adrianbyrne
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adrianbyrne
Asked: December 12, 2023In:
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Hello,We’re presently running our TLE9180D31 3-phase bridge at 20kHz PWM frequency and would want to increase it but there’s no specification in the device datasheet for this parameter, is there any specification or application information anywhere differently about this parameter ...Read more

Hello,

We’re presently running our TLE9180D31 3-phase bridge at 20kHz PWM frequency and would want to increase it but there’s no specification in the device datasheet for this parameter, is there any specification or application information anywhere differently about this parameter or is this an Infineon apps engineer question?

Thanks,

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InfineonpowerpwmTLE9180D31TLE9180D31QKXUMA1
  1. Julian White

    Hi @Adrianbyrne, The maximum frequency depends on your external MOSFET, so this isn't a restriction for our device. The TLE9180D is typically designed for a maximum total gate charge of 300nC per output stage (20kHz). If PWM frequency, However, total gate charge or number of driver MOSFETs increasesRead more

    Hi adrianbyrne,
    The maximum frequency depends on your external MOSFET, so this isn’t a restriction for our device.
    The TLE9180D is typically designed for a maximum total gate charge of 300nC per output stage (20kHz).
    If PWM frequency, However, total gate charge or number of driver MOSFETs increases, it’s recommended to use a booster IC, for example: AUIRS08152S.
    Best Regards,
    Julian White

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jabirsheikh
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jabirsheikh
Asked: November 30, 2023In:
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Hello Volt Tech Community,We want to apply„ Difference Mode“ Infineon-AURIX_TC3xx_Part2- User Manual-v02_00-EN Page 1182And after on Result Register x, we want to activate„ Result Monitoring through Limit Checking“Infineon-AURIX_TC3xx_Part2-User Manual-v02_00- EN Page 1222Can you confirm that this will work? Is there ...Read more

Hello Volt Tech Community,

We want to apply„ Difference Mode“ Infineon-AURIX_TC3xx_Part2- User Manual-v02_00-EN Page 1182

And after on Result Register x, we want to activate„ Result Monitoring through Limit Checking“

Infineon-AURIX_TC3xx_Part2-User Manual-v02_00- EN Page 1222

Can you confirm that this will work? Is there anything unique to consider?

Thanks and Regards!

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EVADCInfineonMonitoring
  1. sachinsharma

    Hi @jabirsheikh, For limit-checking sludge, the hardware uses the original ADC output and not the output from the difference mode. As I understand from the description you need to do the limit checking for the Difference mode result which won't be possible because of this. Thank You Sachin Sharma

    Hi jabirsheikh,
    For limit-checking sludge, the hardware uses the original ADC output and not the output from the difference mode. As I understand from the description you need to do the limit checking for the Difference mode result which won’t be possible because of this.
    Thank You
    Sachin Sharma

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sachinsharma
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sachinsharma
Asked: November 9, 2023In:
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Hi, I’m using IGBT to control PMSM， for example, if the normal voltage of PMSM is 600V, and the current is 300A, How do I choose the IGBT category according to current and voltage? Thanks and regards! Sachin Sharma

Hi,
I’m using IGBT to control PMSM， for example, if the normal voltage of PMSM is 600V, and the current is 300A, How do I choose the IGBT category according to current and voltage?

Thanks and regards!

Sachin Sharma

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currentigbtpmsmvoltage
  1. ellasmith

    Hello, You choose an IGBT with abs maximum voltage of about 20 advanced than the expected collector-emitter voltage at the worst condition (you count your topology, switching voltage spikes, inputover-voltage). You choose the IGBT current rate according to Tj and power dispersion. Abs maximum currenRead more

    Hello,

    You choose an IGBT with abs maximum voltage of about 20 advanced than the expected collector-emitter voltage at the worst condition (you count your topology, switching voltage spikes, inputover-voltage). You choose the IGBT current rate according to Tj and power dispersion. Abs maximum current drops at advanced temperatures. So choose proper cooling, it might be you need to parallel devices to achieve advanced current. You also have to consider peak current so that it would survive.

    Keep in mind there are numerous other parameters you have to consider, for example, dynamic characteristics, ability to operate at short circuits (10us specified generally), and so on.

    Thank You

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royalbert867
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royalbert867
Asked: November 3, 2023In:
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Hello,I would thankful for some clarity on the expected bit order when writing to the configuration register of the LED1642GW.Whilst it’s easily proved that CFG 0 is the LSB, and CFG- 15 is the MSB of the serialized word, it ...Read more

Hello,

I would thankful for some clarity on the expected bit order when writing to the configuration register of the LED1642GW.

Whilst it’s easily proved that CFG 0 is the LSB, and CFG- 15 is the MSB of the serialized word, it isn’t clear to me whether data is expected as LSB or MSB first?

Section 8.8- PWM counter setting and brightness register (CFG- 15) Does still state” (first input bit of brightness word is MSB, 16th bit is LSB)”, with respect to brightness values, so I’d anticipate this to be widely the case? So. Big Endian?

Many Thanks

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brightnessdataLED1642GWregister
  1. John Rok

    Thе LED1642GW configuration rеgistеr follows a bit ordеr whеrе CFG 0 is thе lеast significant bit (LSB), and CFG 15 is thе most significant bit (MSB) in thе sеrializеd word. Howеvеr, it's crucial to notе that thе information doеsn't spеcify whеthеr thе data should bе prеsеntеd as LSB or MSB first. FRead more

    Thе LED1642GW configuration rеgistеr follows a bit ordеr whеrе CFG 0 is thе lеast significant bit (LSB), and CFG 15 is thе most significant bit (MSB) in thе sеrializеd word. Howеvеr, it’s crucial to notе that thе information doеsn’t spеcify whеthеr thе data should bе prеsеntеd as LSB or MSB first. For a comprеhеnsivе undеrstanding, consult thе LED1642GW documеntation for thе spеcific bit-ordеr rеquirеmеnts.

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nidhi singh
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nidhi singh
Asked: August 28, 2023In:
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Hi, I need help with the PDO2 output in STUSB4500. In spite of setting the PDO Number as 3 and configuring the PDO2 voltage and current values using the STSW- STUSB002 GUI, I can not get any voltage output at PDO2. ...Read more

Hi,

I need help with the PDO2 output in STUSB4500. In spite of setting the PDO Number as 3 and configuring the PDO2 voltage and current values using the STSW- STUSB002 GUI, I can not get any voltage output at PDO2. The status LED is also not glowing. But PDO1 and PDO3 are working OK.

However, I get the PDO2 voltage output, If I change the PDO Number to 2 with the same voltage and current configurations as over. The status LED also glows. So, this isn’t the problem of Source Matching. I’m unable to find out the reason why this is passing and how can I make all the 3 PDOs work easily.

Is there anything that I’m missing in making all the 3 PDOs work together?

Thank You

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ledpdo1pdo2pdo3pdosstusb002stusb4500voltage
  1. ashishgawade

    Hello I assume that you're using our STEVAL_ISC005V1 board and what you call 'PDO1' is Vsnk from the schematic. However, Vsnk lights are on for all PDOs selections. Whereas PDO2 is ON if PDO2 is selected and PDO3 if PDO3 is selected. Our algorithm always tries to select the highest voltage. If the cRead more

    Hello

    I assume that you’re using our STEVAL_ISC005V1 board and what you call ‘PDO1’ is Vsnk from the schematic.

    However, Vsnk lights are on for all PDOs selections. Whereas PDO2 is ON if PDO2 is selected and PDO3 if PDO3 is selected.

    Our algorithm always tries to select the highest voltage. If the charger is so that PDO3 can be selected, then PDO3 Vsink will light on,

    However, also PDO2 Vsnk will light ON. If the charger is smaller.

    Best regards

    Ashish Gawade

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Julian White
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Julian White
Asked: July 26, 2023In:
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Hi, Can anyone tell me how to design a 24vdc to 15vdc buck converter applying viper26ld? Thank You

Hi,

Can anyone tell me how to design a 24vdc to 15vdc buck converter applying viper26ld?

Thank You

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15vdc24vdcbuckviper26
  1. sachinsharma

    Hello, However, there are multiple devices for converting 24V to 15V, the recommendation only depends on the output current, If you want to stay with STMicroelectronics. You could e.g. have a look at the L6981 or the L6986. Regards Sachin Sharma

    Hello,

    However, there are multiple devices for converting 24V to 15V, the recommendation only depends on the output current, If you want to stay with STMicroelectronics. You could e.g. have a look at the L6981 or the L6986.

    Regards

    Sachin Sharma

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vikas Nagpal
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vikas Nagpal
Asked: July 18, 2023In:
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Hi Team, We’re looking for an automotive high-side switch with the below features. 1. VSS- 18V, Load current- 2A, PWM- 5KHz, No of channels- 2 Then we’re unable to get PWM support for devices. Please help us to get the device that’s available ...Read more

Hi Team,

We’re looking for an automotive high-side switch with the below features.

1. VSS- 18V, Load current- 2A, PWM- 5KHz, No of channels- 2

Then we’re unable to get PWM support for devices. Please help us to get the device that’s available with a maximum PWM frequency.

Thank You

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channelsdevicesfrequencyInfineonpwm
  1. ellasmith

    Hello, This series of products are designed for the one-time switch, so it is used for low frequency, if PWM is applied, we would recommend using lower than 300Hz, or for parts even <100Hz, you may relate to the ton/toff time of the part for details. Thank You

    Hello,

    This series of products are designed for the one-time switch, so it is used for low frequency, if PWM is applied, we would recommend using lower than 300Hz, or for parts even <100Hz, you may relate to the ton/toff time of the part for details.

    Thank You

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Julian White
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Julian White
Asked: July 14, 2023In:
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Hi, the datasheet of VNQ660SP doesn’t define whether the STATUS pin is Open Drain. It’s also easily defined in different chips like the VN330SP. In different words, we used many of the VNQ660SP on the same board and connected the STATUS ...Read more

Hi, the datasheet of VNQ660SP doesn’t define whether the STATUS pin is Open Drain. It’s also easily defined in different chips like the VN330SP.

In different words, we used many of the VNQ660SP on the same board and connected the STATUS pin. Is it ok?

Best regards,

Julian

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opendrainstatuspinvnq660sp
  1. nidhi singh

    Welcome @Julian, to the community! The VNQ660SP has been obsolete for a really long time, so there's no official documentation for it anymore. However, one could similarly conclude from the datasheet that the STATUS pin was an open drain output, because just an output voltage low was specified, If IRead more

    Welcome Julian White, to the community!

    The VNQ660SP has been obsolete for a really long time, so there’s no official documentation for it anymore.

    However, one could similarly conclude from the datasheet that the STATUS pin was an open drain output, because just an output voltage low was specified, If I remember rightly. In this respect, it should have been possible to connect STATUS as a Wired- OR.

    However, please mark this thread as answered by opting Accept as Solution, as also explained then, If the problem is answered. This will help other users find that answer faster.

    Good luck!

    Thank you

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