Smart Power Switches Forum Discussions

Hi,

First thank you in advance. I am interested in using the BTS500101TADATMA2 Power Switch in my power distribution application. It has a low Rds and seems to operate at 12V. The minimum nominal load current stated in the datasheet is 40A. I will be using this device at 12A or so. I can't find anything specific in the datasheet to tell me what the performance implications are. There is a Rds vs Tj plot with increasing current that starts at 20A which hints at maybe its not meant to operate at the current I need?

Please advise. 

Dear Sir,

Could you help to check the max resistance value for Rpd,as the recommended value is 47k.

Hi,

I am trying to create the footprint of the component (BSS316N) using the datasheet. 

My question is that I do not how to calculate the max length of the lead.

In the data we cannot see that value but in the document PG-SOT23-3-5 , we can see the minimum value 0.15mm

Anyone can help me to get this value?

Thanks,

dramos

Hello,

I need to switch 48Vdc 5A to two different loads.

There is not much space, so I thought a BTS6163 might be a space saving solution, because I don't need a separate MOSFET and I can switch it on and of by using only one I/O pin of the STM for each chanel.

Is my suggestion right or do you think there is an easyer way to fix my problem?

Hi Experts.

As shown in the figure below, I designed the application circuit for the BTS50085-1TMA and actually designed four of this circuit. There is one way when I set the Defrost_Fan_Out_Ctrl signal high there is no problem with the output 24V, when I set the Defrost_Fan_Out_Ctrl low there will be a 0.7V residual voltage at the output, is this situation normal? This seems to be a false voltage, when I change the 47K resistor at the output to a smaller one, the voltage will become very low. I measured the output voltage at cutoff in three other circuits and it is 0.37V. Is there a problem with this 0.7V? Thank you.

Hi,

May someone advise on Rsense on IS pin, well I noticed that IS(fault)= 4.4 ..10mA, so in case of an overload or short 2 GND conditions this pin will source const current max. 10mA. Now, when my Rsense=1.21k I could get on it 5.32..12.1V.

In the spec I could not have found any info about the IS volt limitations, only that IS is to Vs -> Figure 31.

My question - when Vs is BATT(13.5V) and IN0..IN4 are 5V compatible then IS volt I wished it was 5V compatible for MCU's ADC. So, I would need to lower the Rsense to ~500Oh.

Why spec says Rsense has to be at least 820Oh to limit power losses?

Regards

-Darek

I am trying to repair an automotive  Body control module with BTS5241G and BTS5234G smart hi side switches.

These IC's are unfortunately obsolete and not available . They are both P-DSO-20 packages.

PCB layout

BTS5030-2EKA  & BTS5045-2EKA have been suggested as alternatives  and appear to meet the power & voltage criteria as well as input signal levels. They are both PG-DSO-14 packages , which I can  accommodate  on the PCB as the outputs will line up. The original VBB Power supply on pins 1,10,11& 20  are omitted as the  power is now supplied via the metal cooling tab. the main difference is that the original ICs (BTS5241G and BTS5234G) have two sense diagnosis pins and a sense enable input. These are in use to provide feedback to the controller.

pin 5 IS1 O Diagnosis output signal channel 1
pin 6 IS2 O Diagnosis output signal channel 2
pin 8 SEN I Sense Enable input for channel 1&2

The replacements (BTS5030-2EKA  & BTS5045-2EKA) have a slightly different arrangement 

pin 3 DEN Diagnostic ENable; Digital signal to enable/disable the diagnosis of the device  (same as Sense Enable?)
pin 4 IS Sense; Sense current of the selected channel
pin 5 DSEL Diagnostic SELection; Digital signal to select the channel to be diagnosed.

 My questions are:

1) Is there any possibility of providing feedback on both channels without software changes?

2) Are there other more suitable hi side smart switches available?

All help would be very much appreciated . I am not a professional electronics engineer , but have a good working knowledge of the system.

BTS3011TEATMA1- How do we select the VOH min,VOH max,VOL min, and VOL max.These informations are not available in the datasheet.