looking for a DC-DC 12v boost converter

im looking for a DC DC boost converter for a car's battery ~10-15v to my laptops charger output (19v, 2.15A when charging). it doesn't make sense to use an inverter to: 12v DC -> 120V AC -> 19v.

im thinking:
Vin: 0-20v
Vout: 10-20V or so.
Aout: <=10A

i was looking at: LTC3786 Datasheet and Product Info | Analog Devices or TPS55340 data sheet, product information and support | TI.com or TPS61175 data sheet, product information and support | TI.com but all the ones i have seen use transformers. anyway around this, or to get it slimmed downed?

By transformers , do you mean inductors?
If so, its not possible to make a boost converter without an inductor or transformer.

ok, thanks. any tips in general?

These types of converters are quite common.
Heres an example.

They are tricky to build unless you can get the proper ferrites for the inductors,
so I wouldnt recommend building your own.

good info. id probably be better off doing something more universal like: 12V to 120V Inverter
then i can use anything 120v ac

Buy a universal laptop car power supply off the shelf. They are cheap, they work well, and they come with a guarantee. i.e., they're unlikely to blow up your laptop.