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TPS61040: TPS61040 problem

Part Number: TPS61040
Other Parts Discussed in Thread: TLV61046, TPS61081

Hello, I am using the TPS61040 since 2004 to generate the 15 Vdc output from +5Vdc input.

It is working well.

Now I need to insert a resistive load, like a infrared lamp,  of about 200 mA.

The output voltage decrease until about 6 Vdc.

Why? Can you suggest to me a solution?

How can I work around to this trend?

Thank a lot you for your help.

Regards

Paolo.