High Side Gate Driver Circuit

Dual power supply.

High side gate driver circuit.

High side drivers could be automotive gate drivers gan eicedriver gate driver ics galvanic isolated gate driver 500 700v level shift gate driver eicedriver 1ed compact and µhvic gate driver ics. Contrary to low side the high side configuration of mosfet requires some external circuitry to turn it on. The fan7081 gf085 is a high side gate drive ic designed for high voltage and high s peed driving of mosfet or igbt which operates up to 600v. The following three methods are most commonly used to drive a mosfet as high side switch 1.

The high side drivers come with high side referenced output channels to control power devices like mosfets and igbts. A gate driver is a specially designed circuit that is used to drive the gate of mosfet or igbt in high side switching. On semiconductor s high voltage process and com mon mode noise cancellation technique provide stable opera tion in the high side driver under high dv dt noise circumstances. The mosfets were used as high side switches in the circuit.

In essence a gate driver consists of a level shifter in combination with an amplifier. For driving the mosfet in high side configuration ir2110 gate driver ic was used. Ir2110 is a high low side gate driver ic which is used with power mosfet and igbt. The designed high side driver was tested to observe its performance with respect to different gate input frequencies from 50hz up to 150khz using the mosfet irf730 as the switching device.

Due to the widespread use of igbts for motor control many manufacturers have developed gate driver products. Isolated drivers using high side bootstrap circuit signal isolation the input signals of u1 are isolated in figure 5 with the isolated gate driver ucc53xx. There are various methods for driving the high side mosfet. When using mosfet as a switch it can be connected in two switching modes high side switch and low side switch.

Using a single output gate driver for high side or low side drive 2 4 bootstrap bias supply with isolated high low side gate driver solution figure 5.