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Home/Power Management

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.

volt.tech Latest Questions

nidhi singh
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nidhi singh
Asked: August 28, 2023In: Power Management

How to get output in PDO2 with 3 PDOs work together?

  • 0

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

Read less
ledpdo1pdo2pdo3pdosstusb002stusb4500voltage
  1. ashishgawade
    Added an answer on August 29, 2023 at 10:32 am

    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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Answer
Julian White
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Julian White
Asked: July 26, 2023In: Power Management

How to Design a 24VDC to 15VDC Buck Converter Applying Viper26?

  • 0

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

Read less
15vdc24vdcbuckviper26
  1. sachinsharma
    Added an answer on July 31, 2023 at 10:35 am

    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: Power Management

How to get PWM frequency support for devices?

  • 0

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

Read less
channelsdevicesfrequencyInfineonpwm
  1. ellasmith
    Added an answer on July 19, 2023 at 10:05 am

    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: Power Management

How to connected the STATUS pin in Open Drain – VNQ660SP?

  • 0

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

Read less
opendrainstatuspinvnq660sp
  1. nidhi singh
    Added an answer on July 17, 2023 at 11:14 am

    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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Answer
vikas Nagpal
  • 0
vikas Nagpal
Asked: July 4, 2023In: Power Management

What is specification of STSPIN32F0 or STSTPIN32F4?

  • 0

Hello Volt.Tech experts, Can STSPIN32F0 or STSTPIN32F4 to drive the SiC/ GaN mosfet by the specification of Rdson = 73mOhm, 650V and 26A? Thank You Vikas Nagpal

Hello Volt.Tech experts,

Can STSPIN32F0 or STSTPIN32F4 to drive the SiC/ GaN mosfet by the specification of Rdson = 73mOhm, 650V and 26A?

Thank You

Vikas Nagpal

Read less
driveganmosfetrdsonsicstspin32f0ststpin32f4
  1. Alex thomas
    Added an answer on July 5, 2023 at 10:26 am

    Hello @Vikas, The GaN FETs need specific gate drivers (e.g. STDRIVEG600). The STSPIN32G4 is suitable to manage motor supply voltage from 5.5 V to 75V. In the STSPIN32F0 family the part number STSPIN32F060x could be used. The driver has 20 V of maximum operating voltage and it isn't suitable to driveRead more

    Hello vikas Nagpal,

    The GaN FETs need specific gate drivers (e.g. STDRIVEG600).

    The STSPIN32G4 is suitable to manage motor supply voltage from 5.5 V to 75V.

    In the STSPIN32F0 family the part number STSPIN32F060x could be used.

    The driver has 20 V of maximum operating voltage and it isn’t suitable to drive negative voltage.

    However, you can apply them, If these characteristics are compatible with your SiCs.

    Thank You

    Alex Thomas

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Answer
ellasmith
  • 0
ellasmith
Asked: June 24, 2023In: Power Management

How to Check STM32WB Custom Board Power Consumption?

  • 0

Hello, I’m using the STM32WB custom board. How do I check power consumption in sleep mode on the custom board? Many Thank you in advance

Hello,

I’m using the STM32WB custom board. How do I check power consumption in sleep mode on the custom board?

Many Thank you in advance

Read less
boardconsumptionpowerstm32wb
  1. nidhi singh
    Added an answer on June 26, 2023 at 9:58 am

    Hello, To check power consumption in sleep mode on the STM32WB custom board, you can use a current measurement tool such as a multimeter or an oscilloscope with a current probe. Here are the basic steps to follow: Measure the current consumption of the board in active mode using the current measuremRead more

    Hello,

    To check power consumption in sleep mode on the STM32WB custom board, you can use a current measurement tool such as a multimeter or an oscilloscope with a current probe.

    Here are the basic steps to follow:

    1. Measure the current consumption of the board in active mode using the current measurement tool. This will give you a baseline current consumption value.
    2. Put the board into sleep mode using the appropriate power management functions. The specific functions will depend on the software development environment you are using (e.g. STM32CubeIDE, Keil, etc.), but they typically involve setting the appropriate bits in the power management registers.
    3. Measure the current consumption of the board in sleep mode using the current measurement tool.
    4. Compare the current consumption values in active and sleep modes to calculate the power savings achieved in sleep mode.

    Note that there are different levels of sleep modes, each with different levels of power savings and wake-up times. You should choose the sleep mode that provides the appropriate balance between power savings and wake-up time for your application.

    Also, keep in mind that the power consumption of the board may vary depending on the specific components and peripherals that are active or disabled during sleep mode. You may need to adjust the power management settings and repeat the measurements accordingly.

    Thank You

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Answer
sachinsharma
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sachinsharma
Asked: June 10, 2023In: Power Management

How GUI react properly with L9963E eval kit?

  • 0

Hello, So I just plugged in my Eval kit. I’ve 12V in the barrel jack and am connected to the USB to my pc. When I exchange to the applicable port, I can apply the eval kit GUI to connect and ...Read more

Hello,

So I just plugged in my Eval kit. I’ve 12V in the barrel jack and am connected to the USB to my pc. When I exchange to the applicable port, I can apply the eval kit GUI to connect and ask for the Firmware version. It responds to 1.6 which should be right. But also the coming move is to modify the ID assignment to 1 and look at the D13 LED to light up. This doesn’t be. Indeed more confusingly, I see the D5 led (TX) light up also the D4 led (RX) light up. Shouldn’t it be backward? Eventually, It says the Ack light should turn green when I press configure IDs but it stays red. Am I missing a step? is 12 V 1 amp not enough power for this board?

Thank you

Read less
evalguikitL9963Eledmanagementpowerusb
  1. nidhi singh
    Added an answer on June 12, 2023 at 10:43 am

    Hello, The X1 connector requires a 12V power force to power the low-voltage side of the board this includes the microcontroller. However, you also want to give power to the high-voltage side of the board (this includes the L9963E) in setup to power and give with the IC. Since you're just giving 12VRead more

    Hello,

    The X1 connector requires a 12V power force to power the low-voltage side of the board this includes the microcontroller. However, you also want to give power to the high-voltage side of the board (this includes the L9963E) in setup to power and give with the IC. Since you’re just giving 12V to the uC, the behavior you’re viewing is normal the uC acknowledges and replies with the FW version. Since the L9963E isn’t powered on, it can not communicate, and so the uC continues to poll staying for an SPI response.

    Please download the user manual available on our website and follow the muumuu configuration laid out in section 2.2, as well as the getting started companion( section 3). This will outline the way demanded to get the board up and streaming correctly. Specifically, supplying power to P2-> at a minimal P2- 15 (VBAT) and P2-9/23 (GND) should be connected to give 12V (or stack voltage) to the L9963E.

    Thank You

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Answer
vikas Nagpal
  • 0
vikas Nagpal
Asked: June 1, 2023In: Power Management

How to Enable Watchdog – TC 397 (automatic password sequencing)?

  • 0

Hello Volt Tech Team, Can anyone let me know how to enable and implement Automatic password sequencing which follows a pseudo-random sequence based on a 14-bit Fibonacci LFSR? Thank You

Hello Volt Tech Team,

Can anyone let me know how to enable and implement Automatic password sequencing which follows a pseudo-random sequence based on a 14-bit Fibonacci LFSR?

Thank You

Read less
fibonacciInfineonlfsrpasswordsequencingtc397watchdog
  1. ashishgawade
    Added an answer on June 2, 2023 at 11:23 am

    Hi, For enabling the automatic password sequencing you can write 1 to bit PAR of WDTCPUyCON1 (or WDTSCON1 for safety watchdog) Register. For example, if you want to enable automatic password sequencing for CPU0 you can do it like this (IfxScuWdt_getCpuWatchdogPassword()); = 1; (IfxScuWdt_getCpuWatchRead more

    Hi,

    For enabling the automatic password sequencing you can write 1 to bit PAR of WDTCPUyCON1 (or WDTSCON1 for safety watchdog) Register. For example, if you want to enable automatic password sequencing for CPU0 you can do it like this

    (IfxScuWdt_getCpuWatchdogPassword());
    = 1;
    (IfxScuWdt_getCpuWatchdogPassword());

    After enabling this point the password changes automatically after each password check and follows a pseudorandom sequence based upon a 14-bit Fibonacci LFSR with characteristic polynomial x14 x13 x12 x2 1 as you said. So each time you have to calculate the new password grounded on this sequence.

    Best Regards,

    Ashish

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Answer
ashishgawade
  • 0
ashishgawade
Asked: May 22, 2023In: Power Management

Class D Amplifier MOSFET from FDP51N25 TO IRF4332

  • 0

Dear All, We’ve made a class d system, based on IRS2092 CHIPSET. It’s an amp of 2000W system and we use MOSFET of Onsemi FDP51N25. We’re looking to change this to Infineon MOSFET with part number IRFB4332. Please suggest can it’s one to one ...Read more

Dear All,

We’ve made a class d system, based on IRS2092 CHIPSET.

It’s an amp of 2000W system and we use MOSFET of Onsemi FDP51N25.

We’re looking to change this to Infineon MOSFET with part number IRFB4332.

Please suggest can it’s one to one replacement from FDP51N25 TO IRF4332.

Thanks & Regards

Read less
amplifierchipsetfdp51n25Infineonirf4332mosfetonsemi
  1. vikas Nagpal
    Added an answer on May 24, 2023 at 10:16 am

    Hello, The IRFB4332 is a suitable replacement for the FDP51N25 MOSFET in your Class D amplifier system. Both MOSFETs are N- channel devices and have such voltage conditions, with a minimum VDS of 250V. The IRFB4332 has a just lower RDS (ON) value than the FDP51N25, which means it'll dissipate less pRead more

    Hello,

    The IRFB4332 is a suitable replacement for the FDP51N25 MOSFET in your Class D amplifier system. Both MOSFETs are N- channel devices and have such voltage conditions, with a minimum VDS of 250V.

    The IRFB4332 has a just lower RDS (ON) value than the FDP51N25, which means it’ll dissipate less power when conducting. This can potentially result in better effectiveness for your system.

    However, it’s important to note that the IRFB4332 has an advanced pulsed drain current (Id) level of 60A compared to the 51A level of the FDP51N25. This means that if your system operates at very high current levels, you may need to ensure that the IRFB4332 can manage the current without breaking its maximum levels.

    Overall, make sure to double-check the specifications and ensure that the MOSFET can manage the demands of your specific application.

    Thank You

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ashishgawade
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ashishgawade
Asked: May 8, 2023In: Power Management

Why STM2H747 Entering a Discovery Board Blank?

  • 0

Hello, I just entered my brand new stm32h747 discovery board, on power-up it does nothing just two LEDs light up, according to the user primer it should be preloaded with a demo. I checked in Cube Prog and it reports as blank. Is ...Read more

Hello,

I just entered my brand new stm32h747 discovery board, on power-up it does nothing just two LEDs light up, according to the user primer it should be preloaded with a demo.

I checked in Cube Prog and it reports as blank.

Is it possible that my device got damaged ever or it’s just not flashed? aren’t units tested before dispatching out?

Is this a common thing? I do not flash back ever entering a discovery board blank.

Thank You

Read less
boardcubeflashledspowerstm2h747
  1. vikas Nagpal
    Added an answer on May 9, 2023 at 10:38 am

    Hello, In actuality, the DISCOVERY is always delivered pre-programmed. Depending on where you got the board, a possible former owner may have canceled its flash. still, it shouldn't be a problem to reprogram the board and the external flash memory, as the collected demo can be set up on the STM32H74Read more

    Hello, In actuality, the DISCOVERY is always delivered pre-programmed. Depending on where you got the board, a possible former owner may have canceled its flash.

    still, it shouldn’t be a problem to reprogram the board and the external flash memory, as the collected demo can be set up on the STM32H747I–DISCO product website under Documentation> collected Demos, after unbarring in the subfolder STM32H747I-DISCO_demo/Binary.

    Does it answer your question?

    Regards

    Vikas Nagpal

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