Efficient
Power Conversion advances the performance capability while lowering the cost of
off-the-shelf gallium nitride transistors with the introduction of the EPC2045
(7 mΩ, 100 V) and the EPC2047
(10 mΩ, 200 V) eGaN FETs. Applications for the EPC2045 include single stage 48 V
to load Open
Rack server architectures
, point-of-load
converters
, USB-C, and LiDAR.
Applications for the 200 V EPC2047 include wireless
charging
, multi-level ac/dc power supplies, robotics, and solar
micro inverters
.

 

Widening
the performance/cost gap with equivalent silicon power transistors, the 100 V, 7
mΩ EPC2045, cuts the die size in half compared to the prior-generation EPC2001C
eGaN FET. The 200 V, 10 mΩ EPC2047 eGaN FET also cuts the size in half so that
it is now about 15 times smaller than equivalently rated silicon MOSFETs. This
means that designers
don’t have to choose
between size and performance. The chip-scale packaging
of eGaN products handles thermal conditions far better than the plastic
packaged MOSFETs since the heat is dissipated directly to the environment with
chip-scale devices, whereas the heat from the MOSFET die is held within a plastic
package.

 

EPC-Gen-5-eGaN-Technology-LoRes2

 

 

 

GaN
process developments have significantly lower capacitance than their silicon
counterparts. This translates into lower gate drive losses and lower device
switching losses at higher frequencies for the same on-resistance and voltage
rating. In the case of the EPC2045, a 30% reduction in power loss with a 2.5
percentage points better efficiency than the best comparable MOSFET was
achieved in a 48 V to 5 V circuit operating at 500 kHz switching frequency.

 

The
performance, size, and cost improvement evidenced in these new products were
made possible by an innovative method of both reducing the electric fields in
the drain region during breakdown, and significantly reducing the number of
traps that could cause electrons to become inactive. 

 

Low volume pricing for the EPC2045 100 V, 7 mΩ product at
1K units is $2.66 each, and low volume pricing for the EPC2047 200 V, 25 mΩ product at 1K units is $4.63
each.  The development boards are priced at $118.25 each.