LED driver selection

TPS61165 or TPS61500 for the high current Drivers.  TPS6106x or TPS6116x for the low current single string drivers.  TPS61150 or TPS6118x for the multi string drivers.

TPS61165 has no access to the gate of the fet, so how can you mitigate the switch - on spike?

the switch-on spike, -due to the charge-up of the boost schottky, is the worst thing in the EMC book

See http://focus.ti.com/lit/an/slyt340/slyt340.pdf  for explanation as to how the TPS61165 manages the switch on spike.

If you want access to the gate of the FET, you need to move to a controller with external FETS like the TPS40211.

hello ,

i  have avidly read that link many times myself.......but sadly it only makes reference to the TPS61161....it does not say that the dual slope method applies to TPS61165.

The TPS61165 datasheeet makes NO mention of dual slope switch on so you must assume it does not possess it.

The TPS61165  has the same switch driver as its other family members, the 60,61 and 70.

Thankyou Mr Falin,

Please could you tell if the TPS61500 also has dual slope switch on?, as described in the above article

Yes.  The TPS61500 also has the two step/dual slope switch turn on to reduce the higher frequency EMI spikes.