Forum Post: RE: tps53624 shut itself off at high current usage
Really appreciate your quick response, John!Yes, lowering the 5Vin to 4.8V is my concernt too, though the spec range for this 5Vin is +/-10%. The only thing I still don't get it is like you said, it...
View ArticleForum Post: TPS23756 in Non-PoE Application
I am adapting the TPS23756EVM design to a non-PoE, 12V-only application. The high-voltage capability of this design reduces the need for surge protection in automotive power applications, which can...
View ArticleForum Post: RE: TPS65910A3(1) Wrong Voltages
I found something else interesting. I disconnected VRTC from the CPU on the CPU side and did a quick power up. The voltage jumped to the usual 2.6-2.7V but when I turned the power supply off, the...
View ArticleForum Post: RE: LM26484 Datasheet Discrepencies
Hi Ken,Thank you for your input and deligent observations:1. It meant to be sinking capability and you are absolute correct as it is open drain sourcing is dependent on one's external pull up limiting...
View ArticleForum Post: RE: LMZ12010 maximum soldering temperature?
Thanks for your help, Jimmy! We'll try soldering again with our spare IC and a hot plate.Maybe you could update the data sheet to remove "easy hand soldering"
View ArticleForum Post: RE: BQ24725 issues
I solved the problem adding 0.047uF capacitor between BTST ( pin 17) and PHASE(pin 19)
View ArticleForum Post: LMZ10501 pre-biased output behavior
What is the behavior of the LMZ10501 in the presence of voltage on its output during start-up?Does it sink current or has any other troubling behavior?
View ArticleForum Post: LED3402EVAL dimension
Dear sir,Our customer asked us about LM3402EVAL board diminsion.Could you please kindly let us know the dimension of LM3402EVAL? Best regards,Hiroaki TanikosiKTL Corporation
View ArticleForum Post: RE: TPS3813K33
Hello Darwin,I have made the measurement for the WDI, the signal is correct, that means that the value is always at 0 until the first rising edge done at 120ms by the CPU software.There is no...
View ArticleForum Post: RE: LM3481 shut down not working
Hello,there isalready a solution tothe problem?regards,SteffenKuhrt
View ArticleForum Post: RE: LM3478 voltage characteristic (incl. oscilloscope pictures)
Hi Steffen,Cin is so high because WEBENCH calculates conservatively under the assumption of a slow input source. It sizes Cin to be able to handle providing the full input current for one switching...
View ArticleForum Post: RE: LED3402EVAL dimension
(Please visit the site to view this file) Find attached the board dimensions
View ArticleForum Post: RE: LM3466 dimmer option
2 different part numbers in the same thread therefore I will retract the previuos post and get a recommended dimmer for thr LM3448 EVM (230 VAC)
View ArticleForum Post: RE: Vol(output level low) of power-good in LM26420
The open-drain outputs for the PG1 and PG2 signals on the LM26420 need to be better specified. An Rds(on) of 1K ohm is extremely high. I am skeptical about this number. Usually open-drain outputs...
View ArticleForum Post: MC79L05 LDO Question
This is maybe a really stupid question, but... Suppose I wire the COMMON pin to +12 V, and the INPUT to my system GND, do I get -5 V (WRT system GND) at the OUTPUT pin?Thanks
View ArticleForum Post: RE: BASIC CONCEPTS OF LOOP COMPENSATION
The basic criteria of phase margin, gain margin and loop stability is covered in any number of basic texts and is covered in detail in specific control loop theory texts.Basically a circuit would be...
View ArticleForum Post: RE: UCD9222 programmer
Most customers load the UCD92xx configuration after assembly onto their system boards, all configuration methods are listed in the document referenced previously..TI does not offer boards to support...
View ArticleForum Post: RE: Quick question about the MC34063
So I built up a buck regulator circuit with the mc34063 on a breadboard and was hoping to get a second opinion on my calculations. My hand calculations are attached and these are the values i'm using...
View ArticleForum Post: RE: TPS65910A3(1) Wrong Voltages
One more piece of info, if I ground PWRHOLD and turn the PMIC off, VRTC drops to the expected 1.8V. As soon as I release it VRTC jumps back to 2.3V and VDIG1 goes up to 2.6.This is driving me crazy!
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