Power Forum Discussions

Hi all,

We would like to measure the phase margin at EVAL_TDA38740_3.3VOUT.

Could you please check if the attached method is correct?

If it is not correct, please tell me how to measure it.

If you have the phase margin of EVAL_TDA38740_3.3VOUT, please provide it for us.

Best regards,
MS

Hello,

TLF35584Q is a commonly used SBC , which frequently is combined with AURIX processors.

But I could not find a reference manual regarding configuration via SPI.

Many thanks for your support!

The DC-DC module that supplies power to the driver chip is normal, the IGBT module is F3L200R12W2H3_B11, and the driver chip selected is 1ED020I12-F2 , and The driver circuit is shown in the figure. When the upper voltage is 300v, 9 of the 12 driver chips are bad. After replacing the 9 new driver chip, power on, give the duty cycle, a single measurement of G1 and E1 output signal, (1) three of them only output is -8V, replace the regulator diode (such as: D7) can work normally. After replacing the 9 new driver chip, power on, give the duty cycle, a single measurement of G1 and E1 output signal, (1) three of them only output is -8V, replace the regulator diode (such as: D7) can work normally. (2) but some no output, measured the driver chip's left and right side of the circuit found that the OUT output resistor is broken, some resistors shorted. After re-soldering found that the chip began to get hot, the newly soldered resistors began to blacken. (3) There is also an output of about 1-2V output. May I ask the technician what is the reason for the above three situations? Why -8V is the diode bad. And what is the reason for the hot chip? The hot chip driven by the tube is T2/T3, T6/T7. are the middle IGBT, this is not a bad IGBT, because my DC port voltage in 300v, the middle IGBT voltage withstand value is in 450v, T1/T4 in 1200V.

smartconx_target@Q!w2e3r4t5y6u7i8o9p0||/t5/%E9%97%A8%E7%BA%A7%E9%A9%B1%E5%8A%A8%E5%99%A8/The-driver-chip-is-hot-and-still-hot-after-replacement-is-it-caused-by-a-damaged/td-p/740460

The DC-DC module that supplies power to the driver chip is normal, the IGBT module is F3L200R12W2H3_B11, and the driver chip selected is 1ED020I12-F2 , and the driver circuit is shown in the figure. When the upper voltage is 300v, 9 out of 12 driver chips are broken. After replacing the nine new driver chip, power on, give the duty cycle, a single measurement of G1 and E1 output signal, (1) three of them only output is -8V, replace the regulator diode (such as: D7) can work normally. (2) but some no output, measured the driver chip's left and right side of the circuit found that the OUT output resistor is broken, some resistors shorted. After re-soldering found that the chip began to heat, the newly welded resistors began to blacken. (3) There is also an output of about 1-2V output.

Can a technician tell me what is the reason for the above three conditions? Why -8v is the diode bad. What is the reason for the hot chip? The tubes driven by the hot chip are T2/T3,T6/T7. they are all intermediate IGBTs, is this a bad IGBT because my DC port voltage is at 300v, the voltage withstand value of the intermediate IGBTs is at 450v, and the T1/T4 is at 1200V.

smartconx_target@Q!w2e3r4t5y6u7i8o9p0||/t5/%E9%97%A8%E7%BA%A7%E9%A9%B1%E5%8A%A8%E5%99%A8/%E9%97%A8%E7%BA%A7%E4%BF%A1%E5%8F%B7IC%E5%8F%91%E7%83%AB-%E6%9B%B4%E6%8D%A2%E5%90%8E%E8%BF%98%E6%98%AF%E5%8F%91%E7%83%AB-%E5%91%A8%E5%9B%B4%E7%94%B5%E8%B7%AF%E6%B2%A1%E9%97%AE%E9%A2%98-%E6%98%AF%E4%B8%8D%E6%98%AFIGBT%E6%8D%9F%E5%9D%8F%E5%AF%BC%E8%87%B4%E7%9A%84/td-p/740451

Hi all,

We are evaluating EVAL_TDA38740_3.3VOUT.

Is the vout_ov_fault_limit valid when the disable_relative_ovp is “1”?

Best regards,
MS

Hi,

Our company recently bought a Hybrid Kit (Kit Hybridpack DSC S2) and we have run into the same issue in this thread https://community.infineon.com/t5/IGBT/Resolver-tracking-error/m-p/652943#M2327 .

It seems that this issue is resolved with a later software release 3.0.8 for the Hybrid Kit. From other threads including https://community.infineon.com/t5/IGBT/Hybrid-kit-software/m-p/614795#M2089 I have seen that I need to be granted the access to see the software for download in the Developer Center.

Could someone please grant me this access?

Many thanks,

Michael

Recently we need to develop a batch of IGBT devices with high overcurrent capability, but we have some questions about the maximum current limit in datasheet.
I know that the maximum current limit of IGBT is limited by the Latch current (which has been solved by the structure of the device), the bonding wire (about 15mil aluminum wire corresponding to 25A current) and the dissipation power, I guess the Ic, pulse in datasheet is mainly considered the dissipation power, but why is this value generally 3-4 times of the nominal value? In practice, we have found that IGBTs remain undamaged under short-term overcurrent of 5x or even 8x.

Understanding the SOA Curves in the Infineon Discrete IGBT datasheet