A magnetic flowmeter for measuring a fluid flow, comprising: a flow tube assembly receiving the fluid flow and having a coil with first and second coil wires for receiving a coil current and responsively producing a magnetic field thereby generating an EMF in the fluid representative of a flow rate; an EMF sensor arranged to sense the EMF and generate an output indicating the flow rate; an H-bridge driver configured to apply a current supply signal to the coil and switch the direction of the current applied to the coil ; and a load leveling boost supply configured to provide power to the H-bridge driver and condition the input current (I IN ) from a DC source, wherein the load leveling boost supply is coupled to an input voltage (V IN ) and is configured to apply a voltage (V1) to the coil which is greater than an input voltage (V IN ), wherein the load leveling boost supply includes: a switch (SW1) configured to selectively couple an inductor (L1) to electrical ground and thereby generate the voltage (V1) which is greater than the input voltage (V IN ), wherein the H-bridge driver is connected to the voltage (V1), and a controller configured to sense the input current (I IN ) using a first current sensor through a first low pass filter and a current output (I Out ) of the H-bridge driver using a second sensor through a second low pass filter , wherein the controller is configured to compare signals of the first and second current sensor and control operation of the switch (SW1) to maintain the input current (I IN ) at a relatively constant level. a flow tube assembly receiving the fluid flow and having a coil with first and second coil wires for receiving a coil current and responsively producing a magnetic field thereby generating an EMF in the fluid representative of a flow rate; an EMF sensor arranged to sense the EMF and generate an output indicating the flow rate; an H-bridge driver configured to apply a current supply signal to the coil and switch the direction of the current applied to the coil ; and a load leveling boost supply configured to provide power to the H-bridge driver and condition the input current (I IN ) from a DC source, wherein the load leveling boost supply is coupled to an input voltage (V IN ) and is configured to apply a voltage (V1) to the coil which is greater than an input voltage (V IN ), wherein the load leveling boost supply includes: a switch (SW1) configured to selectively couple an inductor (L1) to electrical ground and thereby generate the voltage (V1) which is greater than the input voltage (V IN ), wherein the H-bridge driver is connected to the voltage (V1), and a controller configured to sense the input current (I IN ) using a first current sensor through a first low pass filter and a current output (I Out ) of the H-bridge driver using a second sensor through a second low pass filter , wherein the controller is configured to compare signals of the first and second current sensor and control operation of the switch (SW1) to maintain the input current (I IN ) at a relatively constant level. a switch (SW1) configured to selectively couple an inductor (L1) to electrical ground and thereby generate the voltage (V1) which is greater than the input voltage (V IN ), wherein the H-bridge driver is connected to the voltage (V1), and a controller configured to sense the input current (I IN ) using a first current sensor through a first low pass filter and a current output (I Out ) of the H-bridge driver using a second sensor through a second low pass filter , wherein the controller is configured to compare signals of the first and second current sensor and control operation of the switch (SW1) to maintain the input current (I IN ) at a relatively constant level. <EOS>