Part Number:TPS65320-Q1
Hi team,
Could you please help to check if it is OK to use 680K and 133K for FB2 resistor divider? Since customer wants to lower the Iq.
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TPS65320-Q1: FB2 Resistor for TPS65320-Q1
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TPS40007: Can TPS40007 support 3.8V input 2.8V/18.8A output?
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BQ24296M: BQ24296MRGER SGS Report
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TPS65261-1: Minimum duty
Part Number:TPS65261-1
Hi team.
Customer did test as the below.
1. Initial condition
- Input voltage : 12V
- output voltage : 0.85V(no Load)
2. Test content
- Duty check(@13.2 Vin) : 9.2%
- Increase input voltate (15.6Vin) -> Onput voltate increase 0.93V
- Increase input voltate (16.5Vin) -> Occur switch hunting
Customer asked two question as the below.
1. Minimum duty of TPS65216-1 .
2. Recommend solution about problem that output voltage increase and switching hunting when input voltage rise.
Please check and reply.
Thank you.
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TPS61029: Using TPL5111EVM to test TPS61029 embedded on board *** URGENT ***
Part Number:TPS61029
Hi Support,
Pin 1 - EN – directly connected with Vin 1.8V ~ 2.4V, without 10K pull up resistor.
Pin 8 –PS – disable Power saving mode, Pull up 10K with Vin : 1.8V ~ 2.4V.
Result :
VIN :2V, ILOAD: No Load VOUT : 4.47V
VIN :2V, ILOAD: 500mA VOUT : 3.66V
VIN :2V, ILOAD: 550mA VOUT : 3.29V
VIN :2V, ILOAD: 600mA VOUT : 2.98V
This is not our expected result. We need the load current aroud 800mA above @ 3.80V.
In addition, could you advise the efficiency vs output current for TPS61029? This is not found in the datasheet.
Thanks.
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TPS53318: Need to review TPS53318 SCH
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TDA 2xx power distribute level in SOC modules
Hi sir，
We are under development on TDA platform. I want to know that:
1)the power distribute level in SOC modules,such as CPU\GPU\DSP\EVE\IPU.
2) how to enable frequency scaling? I see from the shell that:
cat /sys/devices/system/cpu/cpu0/cpufreq# cat scaling_available_frequencies/scaling_available_frequencies ----->1000000
cat /sys/devices/system/cpu/cpu0/cpufreq# cat scaling_available_frequencies/scaling_cur_freq ----->1000000
cat /sys/devices/system/cpu/cpu0/cpufreq# cat scaling_available_frequencies/scaling_min_freq ----->1000000
cat /sys/devices/system/cpu/cpu0/cpufreq# cat scaling_available_frequencies/scaling_max_freq ----->1000000
cat /sys/devices/system/cpu/cpu0/cpufreq# cat scaling_available_frequencies/scaling_available_governors --->conservative userspace powersave ondemand performance
cat /sys/devices/system/cpu/cpu0/cpufreq# cat scaling_available_frequencies/scaling_governor --->ondemand
So from above ,we can see that there is only one frequency to adjust. Why?
Thank you!
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Asking for power switch solution with soft-start and current limit adjustable function
Hi Team,
Do we have power switch with soft-start and current limit adjustable function?
volteage is 5V~12V.
current is 2.5A
BR,
SHH
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UC2846: UC2846N DC-DC Full-Bridge reference design
Part Number:UC2846
My customer needs UC2846N DC-DC Full-Bridge reference design,please help,thanks.
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LM25119: low voltage with no load , 700mS delay when 20amp load applied.
Part Number:LM25119
Hello.
I am having a coulpe of issues with the LM25119.
I am only using 1ch from the chip for now and have disabled CH2.
Running at 50khz Vin18V , Vout 12V. Max output current 25amps.
Issue 1 - I power up the reg with no load, and the Vout is 4volts. And the FET is getting pulses very slowy. Once you connect a load (400mA) the reg come to life and Vout is 12V.
Issue 2 - With reg running a light load, When I connect a 20amp load , Vout drops down to 4volts and after approx 700mS the reg kicks back into life and supply's 12V and 20amps.
Has anyone come across these issues before?
Regards
Steven
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UCD3138: Questions of CLA PID output
Part Number:UCD3138
Hi ,
There is no DPWM output if the YN is valuable and yn clam high was set by 94%,where can I check if there is something wrong in my code ?
Can you give me some suggestions ? thanks.
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Non-isolated AC to DC
Hi Sir,
Can you please suggest a transformer less design for which is not a using bridge rectifier for our application ?
We are looking for +15V/1A Non-isolated AC/DC power supply. Using Webench I am not able to get non-isolated designs(No transformer used). Can you please help us with it. Below are our requirements:
- Input - 85V to 265V AC
- Frequency of AC input - 50Hz
- Output(Non-Isolated) - 15V, 0.8A to1A
- Application - Metering
Also, We are using PMP10833 15Vout, 1Aout, AC-DC Buck Converter Reference Design for our application.
For metering we will be taking Line(Phase) of the input AC as a reference ground. It seems to be not possible here as bridge rectifier is used. So please let us know how could we use the power supply for metering applications ? or can we use a simple diode + cap for AC-DC conversion instead of the bridge rectifier ?
Eagerly waiting for your response.
Regards,
Kamesh Lakhwani
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LM2941C: Current limiting
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TPS50601A-SP: Industrial Grade Equivalent
Part Number:TPS50601A-SP
Dear Sir,
Is there any industrial grade equivalent part for TPS50601A-SP availabe to check the basic electrical performance?
Regards,
Nesh
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WEBENCH®工具/ BQ78350-R1： BQ78350 after shutdown and restart, the SOH was updated from 100% to 78%. Is there any way for him to remember the remaining capacity and SOH after shutdown?
Part Number:BQ78350-R1
Tool/software: WEBENCH® Design Tools
BQ78350 after shutdown and restart, the SOH was updated from 100% to 78%. Is there any way for him to remember the remaining capacity and SOH after shutdown?
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BQ76PL455A-Q1: BQ76PL455 GUI
Part Number:BQ76PL455A-Q1
I am using EM1402 evaluation board and trying to connect through USB to the PC to watch out for GUI, but as I connect the USB to PC, It shows "cannot open COMP port'. What are the requirements to just connect, the EM1402 to the GUI.
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TPS4H000-Q1: Load current
Part Number:TPS4H000-Q1
Hi team,
My customer is evaluating the TPS4H000-Q1. Could you support the following questions?
1. The d/s states that the recommended nominal DC load current is 0.75A(max). Is it acceptable to satisfy 0.75 A with average current or RSM current(not DC)? If it's ok, how much current does the device can handle? I believe that the device can handle the current within the limits of current limit(ICL) and TSD.
2. Could you let me know the current limit response time? Is it 1us(typ)?
Regards,
Yamaguchi
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UCC28722: Need +15V/1A Non-Isolated AC/DC Converter for Metering applications
Part Number:UCC28722
Hi,
We are looking for +15V/1A Non-isolated AC/DC power supply. Using Webench I am not able to get non-isolated designs(No transformer used). Can you please help us with it. Below are our requirements:
- Input - 85V(min) to 440(max) AC
- Frequency of AC input - 50Hz
- Output(Non-Isolated) - 15V, 0.8A to1A
- Application - Metering
Also, We are using PMP10833 15Vout, 1Aout, AC-DC Buck Converter Reference Design for our application. Below is the link for the same:
For metering we will be taking Line(Phase) of the input AC as a reference ground. It seems to be not possible here as bridge rectifier is used. So please let us know how could we use the power supply for metering applications ? or can we use a simple diode + cap for AC-DC conversion instead of the bridge rectifier ?
Or please suggest us alternate using UCC28722
Eagerly waiting for your response.
Regards,
Kamesh Lakhwani
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TPS7H1101-SP: Thermal Vias Soldering.
Part Number:TPS7H1101-SP
Hello
The customer asked if they should remove the gold plating of the Thermal Vias when soldering.
Is there a reference for this part?
Regards.
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LM2775-Q1: Capacitor recommendation when Iout=10mA
Part Number:LM2775-Q1
Hello all,
Can you recommend the charge pump capacitance when the output current is 10mAtyp? Of course, capacitor of low-ESR and small temperature degrading and small DC bias degrading will be used.
Regards,
RYO
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