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TPS23753A: PMP7355 design issue, 20hz saw tooth output on no load
Part Number:TPS23753AHi,I have implemented a PMP7355 design on a custom board, which connects to a TPS65217C PMIC chip, and the LED connected to the SYS output pin flashes for about 50ms once.Scoping...
View ArticleTPS23753AEVM-004: Q2 part substitution
Part Number:TPS23753AEVM-004Hi,Reading the users guide for the TPS23753AEVM-004 board, I am looking at validating the operation at 5V under 10W load, with a 12V AUX input.First, I will change the...
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External super cap for switching regulator
The capacitor is connected in the following fashion:The value of C1 is 100mF and is rated at 5V (A super-capacitor) with an ESR of 1.25 ohms @ 1kHz. Kindly help us understand how this capacitor will...
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TPS55010: Questions of TPS55010
Part Number:TPS55010Hi everyone,I have some questions as follows , thanks.Q1 : IC is TPS55010 , what value is this I-HSCL ?Q2 : Whether below calculate can used with above calculate portion ?...
View ArticleBQ25601: bq25601 soldering reflow condition
Part Number:BQ25601Hi team Is bq25601(WQFN) acceptable bellows reflow condition and how many times is OK ? *Peak temp :245deg at 20 to 40 sec*Max Peak temp : 260deg 5sec* How many times is acceptable...
View ArticleBQ27426: bq27426 soldering reflow condition
Part Number:BQ27426Hi Is bq27426(CSP) acceptable bellows reflow condition and how many times is OK . *Peak temp :245deg at 20 to 40 sec*Max Peak temp : 260deg 5sec * How many times is acceptable do...
View ArticleRequest TPS53688RSBR(QFN40) programming spec. and programming circuit.
Hi,I want to design a programming tool and software support TPS53688RSBR(QFN40) device.Please help to provide TPS53688RSBR(QFN40) programming specification and the basic programming circuit.Regards.Peter
View ArticleRequest TPS53820RWZR(QFN35) programming spec. and programming circuit..
Hi,I want to design a programming tool and software support TPS53820RWZR(QFN35) device.Please help to provide TPS53820RWZR(QFN35) programming specification and the basic programming circuit.Regards.Peter
View ArticleTPS65381A-Q1: Reading back SAFETY_CHECK_CTRL register after LBIST/ABIST
Part Number:TPS65381A-Q1Hi, My customer is using TPS65381A-Q1 + TMS570x. He reported strange behavior when reading back SAFETY_CHECK_CTRL register in TPS65381A-Q1. Suppose LBIST and ABIST are finished...
View ArticleTPS62175: TPS62175
Part Number:TPS62175Hi,When I tie "Sleep" pin on TPS62175DQC ICs to GND, I do expect to see a drop in current delivery to the output, but my circuit is still capable of providing 500+ mA regardless of...
View ArticleUC1525A: difference with UC1527A
Part Number:UC1525AHi team,I notice the difference between UC1525A and UC1527A is that in UC1527A the output stage uses a OR logic while in UC1525A it is NOR logic, which means the output of the two...
View ArticleTPS65381A-Q1: WD_RST_EN in SAFETY_FUNC_CFG register
Part Number:TPS65381A-Q1Hi, My customer is using TPS65381A-Q1 + TMS570x. Now he is trying to test the case when TPS65381A-Q1 watchdog timer reset happens. So WD_RST_EN is set to 1 in SAFETY_FUNC_CFG...
View ArticleTPS65381A-Q1: TPS65381A-Q1: SPI WD stop
Part Number:TPS65381A-Q1Hi Sir： I want to Boot-loader the MCU Program, then I can not give a WD to TPS65381-Q1. It will reset the MCU.What should I do to Complete the Boot-loader。when I...
View ArticleUCC27524A: ucc28180
Part Number:UCC27524ADear jef, Already we are developed the TIDA-00779 fixed PFC system and tested 2.5kW Load, In that we replaced the UCC27531 into UCC27524A and PFC ON/OFF and Relay...
View ArticleUC3845: Application
Part Number:UC3845I am designing a 300W single switch forward DC-DC converter with reset winding. I am using UC3845 current mode PWM controller. I am confused with the following things:1. In the...
View ArticleTPS62743: Need a PN recommendation for >6v input, Iq
Part Number:TPS62743Hi,Please recommend a PN which can support >6V input[4 AAA] and 1uA Iq, 400mA Iout and 3.6v output. thanks.
View ArticleTPS54331: Current-Limit Threshold vs Input Voltage
Part Number:TPS54331Hi,in datasheet Figure8.Current-Limit Threshold @ Tj=-40C is lower than 25C and 150C. Why?I think ideally as long as the temperature increase, the current-limit threshold should...
View ArticleUCC28911: Coufirmation of circuit and waveform
Part Number:UCC28911Dear Specialists,My customer is evaluating UCC28911 and the result is good. He has a request of confirming circuit and waveform.I would be grateful if you could advise.Could you...
View ArticleBQ27220: Charge and Discharge Current of BQ27220
Part Number:BQ27220Dear sir:Sir, I have a question. How about Charge and Discharge Current of BQ27220,The specifications are not written.thanks
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CSD19536KTT: There is a voltage surge when the lower MOS in the half bridge...
Part Number:CSD19536KTTThe following is the schematic design of our customer.The current requirements of M- are 350A for 5 seconds、275A for 5 minutes or 125A for 1 hour.As the following picture shows,...
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