TPS51220A: About slope compensation in current mode

Tsukui Yusuke

Guru 21930 points

Part Number: TPS51220A

Hi,

Could you tell me about TPS51220A internal slope compensation?
Please tell me the slope of the ramp waveform to be superimposed.
Customers need that information for design optimization.

Best Regards,
Yusuke / Japan Disty

over 7 years ago

0 Edwin Zang over 7 years ago

TI__Expert 6425 points

hello Yusuke,
The slope compensation circuit is constant in internal IC. we couldn't change the parameters.
You can follow the calculate tool to design the circuit.

best regards.
edwin

0 Jason Wang (BSR-MV) over 7 years ago

TI__Genius 9550 points

Tsukui,
This is an old device, so it is hard to support the internal parameters. We'd like to review customer's schematic/layout when complete.

0 Tsukui Yusuke over 7 years ago in reply to Jason Wang (BSR-MV)

Guru 21930 points

Jason-san, Edwin-san,

Thank you for you response.
”The slope compensation circuit is constant in internal IC” is exactly what I want.

Could you tell me the fixed value entered in the calculation sheet?
Or Could you examine the internal circuit information(internal parameters)?

I appreciate that this may be a difficult request.
However, that information is necessary for D-in.

Currently, customers are gathering information for the next design.
Therefore, there is no concrete circuit information yet.

My e-mail is : tsukui-y@clv.macnica.co.jp

Best Regards,
Yusuke / Japan Disty

0 Edwin Zang over 7 years ago in reply to Tsukui Yusuke

TI__Expert 6425 points

Hi Yusuke,

I'll test the value for you. I'll give you feedback ASAP.

best regards.

edwin.

0 Tsukui Yusuke over 7 years ago in reply to Edwin Zang

Guru 21930 points

Edwin-san,

Thank you for your kind support.
I look forward to your reply.

Best Regards,
Yusuke / Japan Disty

0 Edwin Zang over 7 years ago in reply to Edwin Zang

TI__Expert 6425 points

hello Yusuke,

the slope is 1e8A/s.
you can refer it to design.

best regards.
edwin.

0 Tsukui Yusuke over 7 years ago in reply to Edwin Zang

Guru 21930 points

Edwin-san,

Thank you for dealing with this matter.
I will report it to customers.
I would appreciate it if you could reply to my further contact.

Best Regards,
Yusuke / Japan Disty

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TPS51220A: About slope compensation in current mode