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Forum Post: RE: Linear regulators
The voltage source is a small PSD5-36 type transformer 36VCT @ .35A and I'll wire it series with centertap to have two 18V outputs going to the regulators. I'll need 15V going to the crossovers.In the...
View ArticleForum Post: RE: BQ24650 6mA discharge current issue
For your information Charles, I modified the circuit to charge only one 4.2V Li-ion battery (see attachment) and I measured following conditions when the leakage happens -1. MPPSET voltage is set to...
View ArticleForum Post: RE: LM5104 issues
Hello Emanuele,Welcome to the Forum!When you say swing, do you mean you are seeing a 14Mz oscillation on the output? What is the inductance of your load? Does this swing increase or decrease with...
View ArticleForum Post: LDO for weighing scale for high precision applications
we wants to use LDO or reference circuitry nearby 5v for use with ads1232 for precision weighing scale.requiring minimum 19-20 stable bits and other application which is requiring 17-18 stable bits...
View ArticleForum Post: RE: TPS54620 maximum duty cycle
Hi John,Thanks, that answers my questions.Regards,Shareef
View ArticleForum Post: bq26200
Dear siri am working on Bq2019 and want to replace it with the BQ-26200 can you tell how to calculate the value of Rom and Ram file?RegardsTanvi Verma
View ArticleForum Post: RE: Exploiting LP3913 VIN1 input
R.,Have you had a chance to try out the LDOs as LILOs yet? Since they are not designed for this there might be a chance the input protections are not sufficiently isolated or robust enough guarding...
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Forum Post: tps65217B PMIC SYS pin output problem
Hi,We are using tps65217B PMIC for powering a custom board based on AM3352 .The design is not battery powered. The problem is after connecting 5V to the AC, PMIC is starting, The SYS pin output...
View ArticleForum Post: which is the better topology for 235Vdc/1A
Sir,please can anyone help me to choose the correct topology for 235Vdc/1A output.Input requirement is 230Vac +/- 20%And please suggest me some IC for good efficiency and price.I already work with...
View ArticleForum Post: RE: UC2906 charger issue
Technically a lead acid battery is considered dead if the voltage is below 10 V. At 1V there is probably damage to the plates. You may want to do a search for lead acid battery conditions and...
View ArticleForum Post: RE: BQ78412 unable to update values
Hello Bjoern,It is nice you get a new board. Please try not to touch voltage gain register this time since it is well calibrated while the chip is produced.If you have any question, please feel free to...
View ArticleForum Post: RE: Shut down of LM3481 not working
Hello Rob,We can help with your SEPIC design. The main factors to large power dissipation are:1) not enough heat sink on the board under the FET. 2) very high switching frequency. 3) chosen FET has...
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Forum Post: Not getting correct values in battery capacity fields
Using a primary 9.6V battery, I believe i have set all necessary values, and calibrated, how can it see 100% SOC and it only thinks I have 1maH of capacity when i connect the battery? I load the...
View ArticleForum Post: RE: how can I read data from bq34z100 I2C_write,I2C_read ?
Tom,4) Impedance Track must be enabled. Enter 21 <enter> in the Control field on the DataRAM screen.I don't see the Control Field in the DataRam screen. How to I enable IT? Do I need to do it...
View ArticleForum Post: TPS40400 Vdd=3.3V BP6=? (i.e. What are the MOSFET driver voltages?)
Hello,We are trying to determine the applicability/efficiency of the TPS40400 when Vin and Vdd are both tied to a 3.3V voltage rail. The data sheet (page 16) says BP6 is internally generated with a...
View ArticleWiki Page: TPS62090 and TPS62143 - Is prebias okay?
Original Question: For the TPS62090, I understand there is about 200-ohm resistor to GND during disable. Is it safe for the device if the output will have a DC prebias of about 2V during the disable...
View ArticleForum Post: RE: cable length between TLC 5940 chips
@John - Any way the LTC59711 can be daisy chain in lengths upto ~300-500ft for controlling multiple analog PWM servos?
View ArticleForum Post: RE: bq27510 and GaugeStudio
Hi Gustavo,There is a new software in the works called GDK (Gauge Development Kit). It is going replace auto-cycling, i.e. just one click will allow the user to run learning cycles, so it will ease the...
View ArticleForum Post: RE: PTN04050
Bnovus:In power modules there must never have an applied voltage to any Rset pin or other pins to power off the module. The module will be damaged when an external output voltage is applied to its...
View ArticleForum Post: RE: Metal object near the RX coil
Hi Piotr, Shielding the battery from the magnetic field is the best solution for your case. Thanks Tahar
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