Hi,

One of our power supply design for industrial application, we are planning to use  ICC80QSGXUMA1 as a flyback PWM controller. We are planning to use ROHM part BD7684FJ-LBE2 as an alternate for this controller.  We have seen that there is some diffrence in terms of  pin orientation & functions. The maximum operating frequency is seems diffrent like 500KHz for the Infineon part (ICC80QSGXUMA1) and 120KHz for ROHM part (BD7684FJ-LBE2). Whether the maximum frequency considered for the Infineon part is correct ( In graph it is mentioned as 110KHz frequency). Shall I consider this ROHM part as an alternate ? Kindly share your valuable comments.

Hi Nishanth-san,

Thank you for your reply.

We expect that neither iout_oc_fault_limit nor iout_oc_fault_response will operate when disable_digital_ocp=”0”.

Is this correct?

Best regards,
SM

Dear Experts:

There are two supply rails VDD and VIO for the TLE9104SH; the specified operation range in datasheet is:  VDD = 4.5 V to 5.5 V, VIO = 3 V to 5.5 V. It is not clear in datasheet, that if the supply voltage goes beyond the specified range, how would this device behave? For example, if the VDD goes below 4.5V or VIO goes below 3.3V, do you have the definition about the undervoltage behaviour for this device, can you provide 'VDD' and 'VIO' pin undervoltage threshold. Thanks a lot!

i was building a circuit, referring to the ICE2HS01G Datasheet. I was wondering if  it is Necessary for CL and SRD pin connections (as per Datasheet) for the minimum operation of the IC ? 

if Yes can you please provide a circuit diagram for the same.

Thank you in Advance.  

Hi Nishanth-san,

Thank you for your reply.

In the TDA38740 Register Map that we obtained, the default of lim_aocp_override_pin 0x5E[1] and ilim_docp_override_pin 0x5E[0] seem to be "0".

Can we consider these as "1", since this device is TDA38740-0000?

If so, should we consider the following as "1" , too?

・lcf_zero_override_pin(0x5E[2])

・vboot_override_pin(0x5E[3])

・ton_override_pin(0x5E[4])

・fccm_override_pin(0x5E[5])

・fovp_override_pin(0x5E[6])

・rovp_override_pin(0x5E[7])

Also, is AOCP(aocp_thresh_sel) operating when disable_digital_ocp=”0” and  lim_aocp_override_pin 0x5E[1]=“1”?

Best regards,
SM