LM5060-Q1: LM5060-Q1

REDDY Y

Intellectual 880 points

Part Number: LM5060-Q1
Other Parts Discussed in Thread: STRIKE, LM5060

Driver IC field failure analysis.pdfAttached detailed failure analysis report

over 6 years ago

0 Rakesh over 6 years ago

TI__Guru** 107111 points

Hi Ram,

What is the load capacitance and startup load? input voltage ?
The schematic is not readable in that attachment. Can you send me again.

Best Regards,
Rakesh

0 REDDY Y over 6 years ago in reply to Rakesh

Intellectual 880 points

There is no capacitive load

output of this section is going to Vehicle Motor Controller ECU

input is max 58V

as i mentioned in earlier document i have more doubt on negetive ESD strike and PACK+ or PACK-

and IC can only withstand -0.3V . Let me know how to protect IC from ngetive ESD strikes. if i use TVS DIODE it will clamp upto max 0.6V only2101.01.05.00 SCU SCH.pdf

0 Rakesh over 6 years ago in reply to REDDY Y

TI__Guru** 107111 points

Hi Ram,

How BOOT_OUT and VIN connections are related ?

5.0SMDJ70CA breaks down at 77.80V (min), which is above the abs max voltage of LM5060. you would need to go for 5.0SMDJ54CA to protect device during positive voltage transients. Do you expect D15 to protect.

During -ve voltage transients also 5.0SMDJ70CA only breaks at -77.80V and allows negative voltage to LM5060 device. To avoid damage to LM5060, you can use diode in VIN path (like D1 in figure 39 in the LM5060 datasheet).

I would like to learn on the tests you performed on this module before placing in the field.

Best Regards,
Rakesh

0 REDDY Y over 6 years ago in reply to Rakesh

Intellectual 880 points

4162.2101.01.05.00 SCU SCH.pdf

0 Rakesh over 6 years ago in reply to REDDY Y

TI__Guru** 107111 points

Thanks!
Do you expect negative transient voltages in the field. ? Can you share your system validation test results to look at.

Best Regards,
Rakesh

0 REDDY Y over 6 years ago in reply to Rakesh

Intellectual 880 points

ESD could be anything like positive or negative strike.

I didn't understand what you are expecting from system level test results.

Please call me on this +91-9848131024. We'll discuss

0 REDDY Y over 6 years ago in reply to REDDY Y

Intellectual 880 points

LM5060 Pins	Impedance wrt GND
LM5060 Pins	Faulty Board	Working Board
SENSE/pin1	225k	0.58M
VIN/2	88k	129K
OVP/3	65.7k	65.8K
UVLO/4	65k	64.8K
EN/5	110k	110K
GND/6	0R	0R
TIMER/7	0.8M	0.93M
nPGD/8	5.1R	10K
OUT/9	156K	36.8K
GATE/10	9.87M	10M

Please find the Impedance values on Faulty board vs Working board FYR

0 Rakesh over 6 years ago in reply to REDDY Y

TI__Guru** 107111 points

Hi Ram,

Did you conduct surge tests on the system? Can you share the results

Best Regards,
Rakesh

0 REDDY Y over 6 years ago in reply to Rakesh

Intellectual 880 points

please share your email .. i will send you the results

0 Rakesh over 6 years ago in reply to REDDY Y

TI__Guru** 107111 points

Hi Rami,

I have received your results.
I am taking the discussion forward through email so please close this thread.

Best Regards,
Rakesh

Power management

Power management forum

LM5060-Q1: LM5060-Q1