Hi,
In User Guide (slvuba5.pdf ), U1 = TPS26624( latch off), U2 = TPS26625( Auto retry).
But, Customer test result was U1 = Auto retry, U2 = Latch off.
DS is typo?
Please see P7 Figure 3.
"J4 = 1-2 Position, Current Limit (800 mA) and Auto-Retry"
I think that J4 is compatible with U1(TPS26624 = Latch off). Why Auto-retry?
But this is match with the customer's evaluation.
What is correct?
As customers are confused, please tell us the correct information.
Best regards,
Hiroshi
Part Number:LM5170-Q1
Please see attached waveform.(Please visit the site to view this file)
Question1.
Ripple voltage become 1Vp-p at light load condition,is this thought to be due to diode emulation function?
Question2.
Can this part be disabled diode emulation function to reduce ripple voltage at light load?
Part Number:TPS63060
Hi,
We got a question from the customer about TPS63060.
Could you help us?
[Question]
Our customer want to reduce the capacitance of the output capacitor. If they can keep double pole of the output LC filter, can they use the output capacitor which is out of the recommended range?
ex. Recommended range: 1.0uH + 44uF (Fp=24kHz)
Out of recommended range: 2.2uH + 22uF (Fp=23kHz)
- Customer conditions -
Vin=3~5.5V
Vout=3.3V
Iout=1A
Best Regards,
tateo
Part Number:UCC256302
Hi Expert,
1. In open loop control mode, what's the specific requirement for FB pin series resisitors, since during debug, if the resistor is small, IC can't work. is it ralated to burst mode?
2. could we turn off burst mode by external circuit? if so, how to achieve?
Thanks!
Part Number:LMZ30606
Hello Team,
We have a problem in using LMZ30606:
We convert 5V to 3.3V by using this chip, and we found that there is no output.
At beginning we thought maybe the INH signal(as red block show) is wrong, and we cut this signal from source, there is still no output. And if we connect it to ground, output appears (although output is incorrect, only 1.35V).
While refer to datasheet, chip should be enabled with INH floating, cause internal pull-up exist.
So I want to confirm it from you, if this chip could be enabled while INH floating?
thanks,
Bell
Part Number:TPS763-Q1
Hi team
customer wants Vout = 5.7V at Max Iout 80mA with Vout deviation = +- 3.5%.
he will use TPS76301-Q1 for adjustable Vout.
D/S says Vout deviation = +- 3% for 5V <= Vout <= 1.5V at 100mA for entire temperature range as below.
My question is D/S also can ensure +- 3% for Vout = 5.7V at 100mA for entire temperature range ?
Part Number:BQ27426
Hi,
I read the application note
"bq27426 Gauging Design for Applications With 2-S Li-Ion Battery" http://www.ti.com/lit/an/slua857/slua857.pdf
It says that we can use an OPA to measure voltage of 2-S battery.
Then I think it can be applied to n-S battery(n>2) as long as we adjust the voltage divide ratio, right?
Are there any concern that we emphasize 2-S Li-Ion Battery?
Part Number:LM4040
Dear Sirs,
over a long time we design in your LM4040 shunt references.
For one application (ADC reference) we use your LM4040BIM3-2.5. The Load is a ADC refence input. VCC is approx 5,3V. The Rv is 2400 Ohms. parallel to the LM4040 we have a 1 µF capacitor.
In the last time we can observe an output voltage above the nominal tolerance. For the BIM the nominal tolerance is 0,2%. So we can measure by many of our LM4040 output voltage between 2,506 Vto 2,507 V.
This is over the naminal tolerance from 0,2%!
We measure with a calibrated Keithley 2016THD. Room temperature is between 22 - 25 °C.
Various new combination with other RV for Diode operrating current from 100 µA to 15 mA do not change this unaccuracy extremly.
What is the reason for this voltage divergence in the last time?
Thank you and best regards
Martin
Part Number:LM9036
Hello TI team,
I just wanted to know if this LDO regulator has a minimum output current value required to ensure stability and the correct working of regulation?
Thank you in advance for your support.
Best regards,
Yoann
Part Number:BQ25505
Hi teams,
Part Number:UC2825A-Q1
Hi team,
one of my customers has detected that IC PWM generator reaches quite high temperature at the moment of being powered.
In this application, the PWM generator is controlled by an analog setpoint supplied by our 28335 DSP. If they fix this setpoint to a very low analog value, they inhibit the PWM.
Even when it is not delivering the PWM pulses, whenever it is powered it reaches a temperature about 65ºC.
Is it a correct behavior?
if you need other info, please let me know.
Thanks a lot.
Best regards,
Massimiliano De Cristofaro
TI Staff Field Application Engineer - WEU
Part Number:TPS7A37
Hi,
My customer has a issue at TPS7A3701.
Input current has a ripple.
Customer used PSU as external power supply.
and he used 30cm cable and 15cm cable.
The input current ripple of using 15cm cable is bigger than 30cm.
Could you give me a advice of the cause, please?
I show detail of this issue to attached file.
(Please visit the site to view this file)
Best regards,
Shimizu
Part Number:TPS65910A3EVM-583
Hello,
Regarding to ILMAX register on TPS65910AA1, my customer is asking some question.
They use 600MHz(@OPP100) on AM3554, currently ILMAX register of VDD_MPU is configured to 1.0A(ILMAX = 0).
(According to datasheet table 5-10, VDD_MPU current is 600mA(max) at OPP100.)
(Question)
1) When MPU clock is change to 800MHz(@turbo), should VDD_MPU current need to change to 1.6A(ILMAX = 1)?
Because it is 800mA(max) at turbo mode on datasheet table 5-10.
2) At EEPROM mode, is ILMAX register configured to default value(ILMAX = 0 :1.0A)?
Regards,
Tao_2199
Part Number:TPS22810
Dear all,
Couold you teach the meaning of absolute max of MAX of Vout 'min(VIN + 0.3, 20)'?
My understanding is below,
> We need use the smaller value which 'VIN+0.3' or '20' dependingon the conditions.
> If VIN = 20V, this MAX rating is just 20V.
> If VIN = 10V, this MAX rating is 10.3V (10+0.3V).
> In detail, If VIN = 19.9, this MAX rating is 20V (not 20.2V).
Is my understanding correct?
Best regards,
Part Number:LM53601-Q1
Hi,
We got a question from the customer about LM53601-Q1.
Could you help us?
[Question]
How much is the maximum Enable input current? They don't need quarantee. They will use it as reference.
Best Regards,
tateo
Part Number:BQ24172
Hello
My Customer Request the IBIS Modeling Data for EMI simulation.
Please Let me send the Data.
Regards
Part Number:TPS65381A-Q1
Hi, team.
Please tell me the delay time from when an error is detected until ENDRV goes low.
Is it a logic delay only as shown in Fig.5-14?
Is there a part that is sampled and judged at a certain period?
Part Number:LM5117
Dear All,
We have designed DC-DC converter using LM5117 IC as per steps given in datasheet. But we are facing some issue while testing it.
Below attached is the schematic.
(Please visit the site to view this file)