Dual LT 1054 voltage doubler: what do you think?

[Morocotopo]

Hi, I´m trying to make a 100 mA voltage doubler (9V to 18V) specifically for a Neovibe and a Polyphase. The way to go seems to be a dual LT1054 based one, supposedly each chip provides 50 mA and they can be parallelled, so...
I came up with this: what do you think? will it work? Is it that simple? If it is, why I haven´t seen this done before?  I want to show this to you people before frying my chips...

The single chip one works OK (see my other thread)
Main doubt: the chip has an OSC pin, to synchronize the osc freq with an external clock. If I run them in parallell, without synching them, will they work at all? will I get heterodyning? blue smoke?
So many doubts, so little time...

thanks for reading

Morocotopo

[markusw]

Hey Morcotopo,

I believe that it might be a good idea to synchronise the clocks. Otherwise, you probably might get noise problems due to heterodyning of the two clocks.
Maybe ask the technical support of Linear or TI. I could imagine that they have a working schem. 

Regards,

Markus