LM46001 - inverting DCDC and non inverting DCDC

Yang san,

Thank you for your reply.

Of course, we are sure that there is no problem about LM46001 with inverting and Non-inverting.
Our customer referred to your reference design.(www.ti.com/.../snva722b.pdf)
Based on it, we guess that the this preoblem is concerned with ground layout.

As our request, if the ±0.6V is added to LM46001’s SW pin, can't the LM46001 operate?
We need only this reply.

We need your help.

Kind regards,

Hirotaka Matsumoto

Yang san,

Thank you for your reply and your cooperation always.
What is the purpose of adding ±0.6V to the SW pin?
->At the first, our customer and we don't intend to add ±0.6V to the SW pin.
   However, according to DCDC converter operating, ±0.6V is added to the SW pin.
   So, we think it's concerned with ground layout.

And, the customer's layout drawing is confidential content, so we would like to send this data directly.
Could you let us know your E-mail address?
My E-mail address is the followings;
matsumoto-h@clv.macnica.co.jp

Kind regards,

Hirotaka Matsumoto

Akshay san

Thank you for your reply always.
Please refer to the following file.
20160209_LM46001.pdf

Originally, although inverting DCDC the SW increases +0.6V after immediately start up.  
We think it cause of the problem.(Layout or something)
So, if you have some advice, could you let us know?

Kind regards,

Hirotaka Matsimoto

Akshay san,

Thank you your prompt reply and your cooperation always.
Now, we are requesting to our customer to submit the layout.
When we get it, we will send it ASAP.

Kind regards,

Hirotaka Matsumoto