Part Number:ISO5852S
Dear sir,
ISO5852S design layout suggest to proceed with 4 layer pcb.
Due to urgency, we are planning to design the ISO5852S based inverter gate driver board based on two layer PCB.
What are the effects we Will face in the two layer PCB?
Shall we try with two layer pcb for inverter application or do we need to proceed with only 4 layer pcb. Kindly request to guide us to proceed further.
Thanking you.
Thanks & regards,
Rajasekaran.
Part Number:BQ25890
I am sure to a lot of people this will be a silly question, therefore it should be very quick and easy to answer (I hope) :)
I have the BQ25890 implemented into a design that has a 3V3 MCU connected directly to the I/O pins on the BQ25890 chip.
With a varying LiPo battery voltage of 3.2V - 4.2V, will the logic pins (STAT, INT, OTG etc) ever feed more than 3.3V into my MCU and damage it?
Or, do these pins only ever see a max of 1.8V internally when floating?
Thanks in advance for (hopefully) a simple confirmation!
Part Number:BQ25890
Hopefully a simple and easy to answer question but I want to be 100% clear:
If 5V is introduced onto the VSYS rail (from the charger) when the OTG is activated and producing 5V internal from the battery, what does the chip do?
-Prefer the incoming 5V?
-Block the incoming 5V?
-Shut-down the OTG?
Should I design some kind of filter for this to block the potential of incoming 5V or does the chip handle this with adequate safety?
Part Number:TPS2378
Hi Team,
Our customer can not get power when using TPS2378*2+UCC2897A connect with PoE switch(CISCO Catalyst 9407), and can get power if using PoE injector(POE-173 / PD-9501GR).
1. In previous thread, TI mention that there are only two ways to do UPOE. Through LLDP using a single signature PD or through Forced UPOE using a dual signature PD, so can I asume that CISCO's switch useing LLDP to do UPoE and that's why PD(TPS2378) can not get power?
2. follow question1, if not, then what should be the reason?
3. follow question1, if yes, then what can I do for CISCO's switch for geting power? Any setting to modify?
# The white paper of CISCO's switch for reference:
Best regards,
C.T.
Part Number:TPS3808
Would e2e "TPS3818 - pull-up resistor to Vdd" at https://e2e.ti.com/support/power-management/f/196/t/108036?tisearch=e2e-sitesearch&keymatch=TPS3808%20MR%20max%20internal%2090K%20resistor%20value also apply to TPS3808?
Part Number:BQ79606A-Q1
Hi TI team:
Do you provide libraries or sample code for the IC?
Thanks, Sebastian.-
Part Number:LMR16006
Hello!
Our DRV832xR uses an internal LMR16006X to provide a buck output in case the customer wants it.
Some customers buy the Buck included version but won't be using it at all.
I have been told by some that simply routing the SHDN to GND is enough, others have told me that all 6 pins of the buck should be routed to GND.
What is the official best way to keep the buck off/safe if the buck will never be used?
Regards.
-Adam
Part Number:BQ27GDK000EVM
What is the latest FW (firmware) image version for the GDK (not the EV2400 FW)?
Is it 4478.GDKFW_V1_06_INA220.txt?
2) and please provide a download link.
Thanks,
Corey
Part Number: BQ34Z100-G1
Tool/software: Code Composer Studio
we need complete training o BQ studio and solutions to directly communicate with the controller without using EVM
Part Number: BQ35100
What is the proper way to configure the VIN sensing for the battery voltage when the battery voltage is very high (say 300V). It is not clear what the effective input Z would be for the Vin pin (note the BAT pin has 8Mohm / 100kohm specs).
Please suggest a circuit (perhaps a buffer amp is required?) to allow sensing of a ~ 300V battery that does not draw excessive sensing current.
What are the timing requirements for sampling the Vin pin in the cases where Vin sensing would be switched on and off to reduce power draw?
Part Number: SN75453B
Hi Team,
From our understanding, the output stage on Figure 4 of the SN75453B datasheet is given by the open collector configuration which is tied to a reference voltage VS. However, the high level output voltage of the device is computed as VS – 6.5, in terms of mV.
Is the 6.5 value should be interpreted as mV? Or the high-level output voltage should be interpreted as V?
In addition, how do we accurately compute for the high level output voltage of the device? Our customer wants a high-level output voltage of 10V.
We would really appreciate your help.
Kind Regards,
Jejomar
Part Number: LMR62014
Hello TI;
We have some EVAL BOARDS (AN-2183 LMR62014/LMR64010 Demo Board) we have been testing with the LMR62014 to obtain a 12V output from a 3.5V to 8.5V input, so far it has worked fine, but we have some questions:
1- If our application is below 40mA can we use a different "D1" ? The idea would be to use one with less current capacity and cheaper, since we will never go farther than 50mA.
If this the case, does TI have some PN that could work for this?
2- If our application is below 40mA can we use a different "L1" ? The idea would be to use the smallest and cheapest inductor without sacrificing the performance.
3- The LMR62014 and the LMR64010 seems to be pretty similar.
3a - Why if the LMR64010 has lower power capacity is more expensive? Are there any performance difference or any other difference besides the Current?
3b- What is the lifecycle of these 2 devices any plans of any of these going EOL?
3c- Do you recommend anyone specially? If this is the case, why.
Please answer all questions.
Regards;
Luis
Regards;
Luis
Part Number: TPS55165-Q1
Hello TI;
We are using the TPS55165-Q1 to generate a 5V Rail from a 3.5 to 8.5V input and the following requirements:
The Power Supply PWA shall provide a 5VDC +/-5% supply rail with an operating range of 0 to 300 mA continuous current. |
The 5VDC voltage rail shall not have a voltage dip of more than 20% with an instantaneous output current of 600mA for 100uSec. |
Please answer the 4 questions written in the image attached.
Regards;
Luis
Part Number: LMZM23600V3EVM
Hello TI;
We will use the LMZM23600V3SILT or te LMZM23601V3SILT, to genereta a 3.3V Voltage Rail.
These are our main requirements:
Since we will be working under 200mA, we want to use the 500mA version (LMZM23600V3SILT).
The questions is can the LMZM23600V3SILT accomplish requirement number 2 above?
Regards;
Luis
Part Number: TPS92691
Hello,
I have designed and performed a low-side buck converter with the aid of TPS92691 part (schematic attached).
Vin = +18V to +26Vdc, Vnom = +24Vdc
Vo = 5Vdc (that is the Vf tipycal led value used as a load)
Io = +4.5Adc.
The fact is that after starting up process the led is not lighting and the converter seems to be off. I just see a few miliamperes in the input power supply.
I attach one capture of the oscilloscope, where Ch1 is U1-1 pin (Vcc), Ch2 is U1-2 pin (SS) and Ch3 is U1-12 pin (OVP).
Ch2 (SS) is cut after 75 ms aprox. and it starts to oscillate, the OVP signal is under 1,24V (Vov is almost 8V by design) and it is so far from the limit level.
I cannnot connect 24V to the input because after 10V the converter behaves in such a way and I cannot provide more than 0.7A to the power supply because of this issue.
I am providing either 1KHz pwm dimming signal, 5V or pullin-up with a resistor 100KOhm the PWM pin, which is the case of the capture I attached. The result is the same in both cases.
So, what is happening here? As the led voltage (Vf) is 5V and voltage input is just 10V I can't even see Vsw node operating and the converter seems to not operate really well. In fact i cannot state that the converter is really turned on.
Is there any other protection that is been activated and so this behaviour is justified? I checked the datasheet and saw OVP at starting up process but do not know if there is something else here.
Please, any idea? Could you help me please?
Regards,
Part Number: TPS61165-Q1
I want to find a backlight boost chip, 2A or more backlight boost constant current, preferably with TPS61165-Q1 P2P.
We are looking for the GaN FET driver under the following conditions.
Do you have the recommended IC?
Isolation rating : AC 1500Vrms
Operating voltage : 20V
Gate voltage : 20V
Output current : 2~4A
This IC has UVLO.
Best regards,
Takahiro Nishizawa
Part Number: LP5024
Tool/software: TI C/C++ Compiler
It is developing products using LP5024.
I'm making a driver by looking at the example file here, and I have a question and leave a message.
I'm looking for a way to turn off all or some LEDs after using the RGB LED. Can I use the LED_Global_Off located on DEVICE_CONFIG1 Register?
And how do you set it up when you want to express different colors out of 7 LEDs?
ex)
LP5024_Mode_Select_Normal();
LP5024_Device_Config1(0x3C);
LP5024_LED_CONFIG0(0x01);
LP5024_Bank_Brightness_Set(255);
LP5024_Bank_Color_Set(0,255,0);
LP5024_LED_CONFIG0(0x02);
LP5024_Bank_Brightness_Set(255);
LP5024_Bank_Color_Set(255,0,0);
LP5024_LED_CONFIG0(0x04);
LP5024_Bank_Brightness_Set(255);
LP5024_Bank_Color_Set(0,0,255);
..............
If there is an effective control method, I hope you can show sample reservation.
I wish you a happy day again.
Part Number: BQ40Z60
Hi Batt,
Which Synchronous Buck Controller is the most similar to which built in the bq40z60? Of course, among the TI product family.
The reason why I ask this is that I have struggled with the EMI of my bq40z60 board, where the buck part dominates the emission. So I am building a similar Buck controller board to diagnose the EMI.
Regards,
J.H.Kim
Part Number: LM27403
Hi TI expert,
We recently met an issue about bode plot test. The phase is abnormal when the load current is 3.5A and 7A from 1K-10K. We tried to adjust the zeros and poles. Still have not found a solution yet.
Has this issue been seen on LM27403 before? Please advise what may cause this.
Vin 12V
Vout 5V
Cout: 330uf/16mohm 2pcs
Lout: 2.2uH
Iout max:7A
Temperature: room temperature
Iout=7A:
Iout=0A
Schematic is as below.
Thanks,
Dora