I am providing 5V input to the V+ and getting proper square wave of 0 to 5V on OUT. IC used is LTC6990. I have kept my fmaster 200kH ie Rset=250k. When I use parallel resonating circuit of 11uH inductor and 57nF of Capacitor i am getting around 100mA of current and 0.8V of voltage across resonant ckt. When i arrange in series combination i get 50mA of current and 4V approx. I want to transmit enough voltage and current on the receiver side to charge the battery at around 30mA. I am using LTC4124 as reciever IC.
I have experimented with two configurations for the LC resonant circuit:
-
Parallel Resonance (11 µH inductor + 57 nF capacitor):
- Result: I measured around 100mA of current but only 0.8V across the resonant circuit.
-
Series Resonance (11 µH inductor + 57 nF capacitor):
- Result: The current dropped to 50mA, but the voltage increased to around 4V.
Goal:
I want to transmit enough voltage and current to the receiver side (using the LTC4124 as the receiver IC) of 4.5V and 125mA across receiving inductor. Currently, I'm not achieving the desired current and voltage levels across the receiver inductor.
I have attached the simulation results of transmitter below.