MAX77950 can work as TX. MAX77950(TX) + MAX77950(RX) should work in PeerPower mode only.
On the EVkit, we can get about 1.5W with 5V in and we can get >5W with 6V input. The limit is usually the overcurrent event on the transmit side will turn off output power. Setting the current limit high or limiting the power on the receiver will keep it in a functional state.