Part Number: BQ24103A
When the battery is fully charged, is there any residual current? Or is it off?
Also, can you please verify the following:
CELLS_FB=VCC
ISET1=5.23K
ISET2=10K
The sense resistor is 100mOhm
Any input is appreciated!
Thanks,
Jack
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BQ24103A: Battery Failures
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LM5109B: Library
Part Number: LM5109B
Where can I find the eagle model for this part?
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PMP20289: Question about Reference Design of High Frequency Resonant Converter Using High Voltage GaN Devices_LG TV
Part Number: PMP20289
Team,
There need your help about PMP20289.
There have some new questions about PMP20289 which is a 500W(400V – 12V/42A) high frequency resonant converter using high voltage GaN devices.
PMP20289
http://www.ti.com/tool/PMP20289
power : 500W
output : 12V 42A
Structure : primary side is LLC with GaN, Secondary side SR with FET (2mohm)
fo=370kHz, fs=400~500kHz (above)
resonant capacitor: MLCC 6* 8.2nF
separate trans structure : Lk 3.71uH ( separate inductor L = 2.05uH + tran Lk 1.66uH)
Lp =67.5uH ( 16 : 1)
Questions :
Q1 : Normally, MLCC vendor don’t provide current ripple specification. Which current specification of MLCC be used for calculation ?
Q2 : As we know, for high frequency, it should reduce inductor value or reduce capacitor value. For PMP20289, What’s the key reason about increase capacitor value significantly and reduce inductor ?
Dose this structure for SR stability due to high current(42A) in secondary side ?
Dose it like LLC bobbin structure (increasing primary side Lp value for reduce GaN temperature and decreasing Lk for SR stability) ?
Dose this structure for low output voltage application normally ?
Q3 : Why fs above fo ? (Secondary side have FET. If fs above fo, It seems there have higher switching loss. )
thanks,
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TPS62170-Q1: How is the variation of the switching frequency of 2.25MHz?
Part Number: TPS62170-Q1
Hello,
My customer would like to know the variation of the switching frequency of 2.25MHz when it works in fixed frequency mode. The datasheet doesn't show min/max of that, only 2.25MHz typical. Would you please tell me about it?
Best Regards,
Yoshikazu Kawasaki
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TPS61202: Current limit during softstart.
Part Number: TPS61202
Hi,
My customer has a question.
Datasheet of this device describes the current limit during soft start.
To ramp up the output voltage in a controlled way, the
average current limit is set to 400 mA and rises proportional to the increase of the output voltage.
What is the exact value of current limit at each output voltage? PLS provide the curve of current limit vs output voltage.
Best Regards, Taki
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TPS2359: Change Rsense to 4m Ohm, Rset to 800Ohm to use it for ILIMIT=19.85A, IFT = 25A.
Part Number: TPS2359
Hi Team
Customer wants to change the recommend setting in datasheet to a higher current use case:
Ilimit = 19.85A, IFT = 25A.
Use 0.004Ohm sense resistor, and Rset = 800Ohm.
Is their any risk?
Original schematic, plan to change R137 =0.004Ohm, R140 = 800Ohm.
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CCS/TMS320F280049: How to ensure the data inside the register of LIN_O_RD0 will not be cover?
Part Number: TMS320F280049
Tool/software: Code Composer Studio
Hi all：
I want to ask some questions about LIN communication with TMS320F280049. When i receive the messages from the master, I find the data of the register of LIN_O_RD0 will change. But the master always send the same data with the same ID.So my question is how to ensure the data inside the register of LIN_O_RD0 will not be cover.
void INIT_LIN(void)
{
Lin_Config();/
LIN_initModule(LINA_BASE);
LIN_setIDSlaveTask(LINA_BASE, 0x1);
LIN_enableInterrupt(LINA_BASE, LIN_INT_ID);
LIN_setInterruptLevel0(LINA_BASE, LIN_INT_ID);
LIN_enableGlobalInterrupt(LINA_BASE, LIN_INTERRUPT_LINE0);
LIN_clearGlobalInterruptStatus(LINA_BASE, LIN_INTERRUPT_LINE0);
}
interrupt void level0ISR(void)
{
LINpara.vectorOffset = LIN_getInterruptLine0Offset(LINA_BASE);
LIN_clearInterruptStatus(LINA_BASE, LIN_INT_ALL);
LIN_clearGlobalInterruptStatus(LINA_BASE, LIN_INTERRUPT_LINE0);
if(LINpara.level0Count==0)
{
LINpara.Rx_id=LIN_getRxIdentifier(LINA_BASE)&0x3f;
if(LINpara.Rx_id==0x3c)
{
LINpara.level0Count=1;
LIN_setRxMask(LINA_BASE, 0x00U);
LIN_setTxMask(LINA_BASE, 0x00U);
}
else if(LINpara.Rx_id==0x06)
{
LINpara.level0Count=1;
LIN_setRxMask(LINA_BASE, 0x00U);
LIN_setTxMask(LINA_BASE, 0x00U);
}
else if(LINpara.Rx_id==0x18)
{
LINpara.level0Count=1;
LIN_setRxMask(LINA_BASE, 0x00U);
LIN_setTxMask(LINA_BASE, 0x00U);
}
else if(LINpara.Rx_id==0x03)
{
LINpara.level0Count=1;
LIN_setRxMask(LINA_BASE, 0x00U);
LIN_setTxMask(LINA_BASE, 0x00U);
}
else
{}
}
Interrupt_clearACKGroup(INTERRUPT_ACK_GROUP8);
}
void LIN_TXProcess(void)
{
if(LINpara.level0Count==1)
{
switch(LINpara.Rx_id)
{
case 0x3C:
LIN_setFrameLength(LINA_BASE, 8);/
HVSC_0x3CRcvManage();
LIN_setRxMask(LINA_BASE, 0xFFU);
LIN_setTxMask(LINA_BASE, 0xFFU);
break;
case 0x06:
LIN_setFrameLength(LINA_BASE, 7);
CANBUSOFFPARA.OvertimeCntRX_06=0;
HVSC_0x06RcvManage();
LIN_setRxMask(LINA_BASE, 0xFFU);
LIN_setTxMask(LINA_BASE, 0xFFU);
break;
case 0x18:
LIN_setFrameLength(LINA_BASE, 1);
CANBUSOFFPARA.OvertimeCntRX_18=0;
HVSC_0x18RcvManage();
LIN_setRxMask(LINA_BASE, 0xFFU);
LIN_setTxMask(LINA_BASE, 0xFFU);
break;
default: break;
}
LINpara.level0Count=0;
} else{}
}
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LMG1210: Can we use this gate driver for 3-level flying capacitor buck
Part Number: LMG1210
Hi Jeff,
I am trying to simulate a 3-level flying cap buck with the LMG1210. I am not able to drive the topside MOSFET with it. Please find the attached simulation file. Is there any special configuration that is required to drive the top side MOSFETs (like level shifter). Can you please look in to this issue and help me in trouble shooting this.
Thanks
Srikamnth(Please visit the site to view this file)
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SN54AC74-SP: Propagation Delay Details
Part Number: SN54AC74-SP
Team,
The ranges listed for propagation delay on the datasheets of the SN54AC74-SP, the SN54HC32-SP, and the SN54HC132-SP are not quite as detailed as I’d like. Do you have production data you can share with me on these parts?
Thank you.
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Configure IMU ADIS16365 with SPI CS1 in Beaglebone black?
I am currently working with BBB to get data from adis16365 through spi but not able to make it work.adis16365 is of adis16400 family.
I have added the following configuration in am335x-boneblack.dts file.
spi0_pins_default: spi0_pins_default {
pinctrl-single,pins = <
AM33XX_IOPAD(0x950, PIN_OUTPUT_PULLUP | MUX_MODE0) /* P9_22 (A17) spi0_sclk SCLK */
AM33XX_IOPAD(0x958, PIN_INPUT_PULLUP | MUX_MODE0) /* P9_18 (B16) spi0_d1 MISO */
AM33XX_IOPAD(0x954, PIN_OUTPUT_PULLUP | MUX_MODE0) /* P9_21 (B17) spi0_d0 MOSI */
AM33XX_IOPAD(0x95c, PIN_OUTPUT_PULLUP | MUX_MODE0) /* P9_17 (A16) spi0_cs0 CS0 */
AM33XX_IOPAD(0x960, PIN_OUTPUT_PULLUP | MUX_MODE0) /* P9_16 (C15) spi0_cs1 CS1 */
>;
};
&spi0 {
pinctrl-names = "default";
pinctrl-0 = <&spi0_pins_default>;
status = "okay";
ti,spi-num-cs = <2>;
ti,pindir-d0-out-d1-in = <1>;
spidev@1 {
compatible = "adi,adis16400";
spi-max-frequency = <1000000>;
reg = <1>; //chipselect 1
spi-cpol = <1>;
spi-cpha = <1>;
};};I have also loaded the driver of adis16400 through the developer shell. The iio:device1 is visible in /sys/bus/iio/devices. Doing a 'ls' in this directory will list the following values.
root@beaglebone-yocto:/sys/bus/iio/devices/iio:device1# ls buffer in_magn_scale current_timestamp_clock in_magn_x_raw dev in_magn_y_raw in_accel_filter_low_pass_3db_frequency in_magn_z_raw in_accel_scale in_temp0_offset in_accel_x_calibbias in_temp0_raw in_accel_x_raw in_temp0_scale in_accel_y_calibbias in_voltage0_supply_raw in_accel_y_raw in_voltage0_supply_scale in_accel_z_calibbias in_voltage1_raw in_accel_z_raw in_voltage1_scale in_anglvel_filter_low_pass_3db_frequency name in_anglvel_scale of_node in_anglvel_x_calibbias power in_anglvel_x_raw sampling_frequency in_anglvel_y_calibbias scan_elements in_anglvel_y_raw subsystem in_anglvel_z_calibbias trigger in_anglvel_z_raw uevent in_magn_filter_low_pass_3db_frequency
But almost all of these values return 0. For instance,
root@beaglebone-yocto:/sys/bus/iio/devices/iio:device1# cat in_accel_x_raw 0
root@beaglebone-yocto:/sys/bus/iio/devices/iio:device1# cat in_anglvel_x_raw 0
I am also getting this error when I grep iio through dmesg:
root@beaglebone-yocto:~# dmesg | grep iio [ 11.084613] iio iio:device1: Device ID(16400) and product ID(0) do not match. [ 11.165153] iio iio:device1: adis16400: prod_id 0x0000 at CS1 (irq 0)
How can this be solved? Any help is highly appreciated.
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BQ79606A-Q1: Voltage and Temperature Calibration
Part Number: BQ79606A-Q1
Hi Team,
Just would like to confirm if EVM GUI can support voltage and temperature calibration or not.
Or is there any document to describe the calibrate step?
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DP83TC811EVM: DP83TC811EVM
Part Number: DP83TC811EVM
Hi, if possible, I would like to get the schematic drawing and the PCB drawing of the evaluation board that is written in the part number field.
I received a request from a customer to do a project with your DP83TC811 device and some other parts present in your project.
Our customer taken your evaluation board as example to be follow and I want satisfy his request.
Thanks and best regards.
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UCC21530: I'm having trouble simulating the output of the gate driver on Tina TI
Part Number: UCC21530
Hi,
I'm trying to simulate the UCC21530 SiC gate driver on Tina TI.
I set the circuit up as per the data sheet but my output is incorrect.
I couldn't figure out where the error lies.
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UCC29910A: - Deisgn issue for a 190 Vrms to 530 Vrms PFC buck converter with up to 70W (load variation during operation)
Part Number: UCC29910A
Dear support,
after some tests with the evaluation kit and the first design, which worked in generall, i have some questions and hopefully you can help me with this.
First of all, the initial project data:
- Vin: 190 Vrms up to 530V rms
- Vout: 150V
- Pout: 70W (load variation during operation)
- The design helper (sluc265a) was used
Major design changes du to the evaluation board:
- V_bulk measurment:
due to the high Voltage, the PNP transistor on its own is not an option. We are going with a differential amplifier and the second idea is a Voltage reduction (resistive or Emitter follower) in combination with a PNP transistor, like the referenced design.
Issues:
- V_bulk measuring with a differential amplifier .
I found some issues in the output stability and the PFC-Current at the AC-Voltage of 260-275VAC and 360-380VAC (Load: 20-60W). To me it looks like the „light load / Burst mode“ because some pulses are missing and than the device starting with the typical burst mode puls procedure (only with lower PFC inductance <= 300µH). Between 190-260VAC / 275- 360VAC and above 380V with 20W load it runs without any issue.
Is it possible that something in the logic, maybe in terms of measurment values will be switched inside the UCC29910A? Or is there any other explanation for this behavior?
It would be very helpful to me, if you provide some information about the needed accuracy and values for the Vbulk input (what kind of ripple is recommended etc.). Because in the simulation is no difference between the evaluation kit and our design, but if i use our design in the evaluation board, at some AC values the PCF-Buck can't hold the output (there is an Bulk-overload by 2-3V) and it starts using the "light load / burst mode" even with a 14W load. (Your reference design gets in "light load / burst mode" with a load lower than 4W). On the other operation points the output voltage is stable with different loads.
- Reducing the PFC inductor value
For the first device we used a smaller input range, wich allows us to use a higher PFC inductance. We haven’t seen any issue with this design, all issues startet with lowering the inductence for the higher input range.
@ 500µH
If we go with the higher inductence, the new design has no issuses. Of course we can‘t reach the 70W at lower input voltages.
@ 300µH
With 300µH we saw some issus at several AC-Voltages (see description in VBulk measureing)
@ smaller than 250µH
The PFC won‘t run stable
I saw that there is a saturation current in the PFC Choke at the reference board, we try to avoid that in the design. Is there a reason for the saturation current or is it needed?
3. UCC29910A sets the PFCDRV Pin to always high.
We found a operation Point where the UCC29910A sets the PFCDRV to always high until the bias Voltage drops.
We replaced the UCC29910A device several times but we ended up in this point again.(separated / external 10V bias)
If the fault gets "activated" and set to low, the UCC29910A will not react and the PFCDRV stays on high.
I couln'd find any description for that behavior in the documentation, can you provide some information about this issue and the conditions when this can take place?
If it is possible, i prefer a phone call or a E-Mail contact to exchange more details if needed.
Thank you for your effort in advance and best regards,
John Kock
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CCS/MSP430F5252: MSPBoot without TI RTOS paired with an application with TI RTOS
Part Number: MSP430F5252
Tool/software: Code Composer Studio
Hello,
I would like to create a custom bootloader (without TI RTOS) and use it with an application (with TI RTOS).
How can I do this ?
I would like to use the same link file (.cmd) with predefine to map the memory differently.
My issue is that I can't manage to compile an simple bootloader without the OS in the same project as my application using different build configuration.
I shouldn't need the .cfg file for a non RTOS bootloader right ? I can't change the output type to Executable in properties, I'm stuck with RTCS Application...
Thanks for your help
Clement
(TI RTOS version : tirtos_msp43x_2_20_00_06)
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CCS/F28M35H52C: How could I could enable a GPIO pin in M3 interrupt for timing measurement
Part Number: F28M35H52C
Tool/software: Code Composer Studio
Hello,
I have a F28M35xx controlCard and the docking station baseboard. My question is I would setup a GPIO pin to enable/disable in M3 interrupt to measure/confirm timing and could I do it? I do have some GPIO pins for LEDs and I could use one of them to measure timing for C28 ADC interrupt.
Thanks,
Yong
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DP83869EVM: In testing my ZCU102 eval board, the IP need an option to have 2ns tx skew add by PHY
Part Number: DP83869EVM
Hi All:
I am wondering if it is possible to add the 2ns skew via the PHY in my case. Or I have to figure something else to add the skew
Thanks,
CK
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BQ24161B: Unexpected behavior with a fully charged battery
Part Number: BQ24161B
I am seeing some unexpected with a few parts when I connect a charging source and the battery is already fully charged.
The battery charger will report that it's charging but there is no current going into the battery. Both the Status/Control register and the STAT output indicate charging.
This condition can persist up to several hours before the part recovers and reports not charging.
Not all parts do this, but we have a few that act like this, so it's not just one defective part.
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TPS2420: Offset current
Part Number: TPS2420
Hi Team,
Need your help on this. Our customer is measuring "offset current" in the 1μA to 2.5μA range in IMON. The measurements are done under load and no load conditions. The load conditions were from 1mA through to 1A, and the output was linear, however there is an offset.The offset current for IMON given on its datasheet is apparently a sinking current (due to the negative values).
He added that the offset can be cancelled through software. We just want to verify if this is indeed the offset current of the TPS2420 and not an abnormal behavior. Thank you for the help.
Kind Regards,
Jejomar
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TPS65987EVM: TPS65987EVM
Part Number: TPS65987EVM
I have just purchased the TPS65987EVM with FTDI chip and cannot get the unit to flash using the Application Customization Tool.
The error I keep receiving is:
Exception Encountered during SPI Flash to Device:No FTDI I2C channels (I2C_GetNumChannels) detected, exiting....
<type 'exceptions.Exception'>
In the Show Details I get:
Traceback (most recent call last):
File "dialogWindow.pyc", line 3393, in flash_device
File "hw_interface.pyc", line 187, in hw_open
Exception
Under the device manager I can see 4 USB Serial Com ports with no errors and the ports go away when I disconnect the usb cable so it appears the FTDI unit is connected.
I would appreciate any help I can get for this problem.
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