HIP4086AABZT

PMIC - Gate Drivers

A gate driver is an electronic circuit which is designed to interpret control signals and then respond by driving a high current power device. Gate drivers provide the necessary power to activate a power device such as a MOSFET or IGBT, so they can move to their active state and route power to a given load. Most gate drivers interpret some type of logic language; the most common being 1 to 4, which is used to create a pulse-width modulated waveform.

The HIP4086AABZT is a single-chip, high-performance gate drive which has been developed for application in buck converters. It includes a low-power startup circuit, high current capability and an adjustable soft-on/soft-off feature. The device features an integrated dual-channel output stage which allows for bidirectional control of external power FETs up to 6A, and is specifically designed to reduce or eliminate EMI figuration at high switching speeds.

Application Field of HIP4086AABZT

The HIP4086AABZT has found application in several types of power supplies, such as DC-DC and AC-DC converters, and it is ideal for use in high performance buck converters, buck-boost converters, and step-down converters. It is also suitable for applications such as high-quality audio and instrumentation amplifiers.

Because of its integrated driver functionality, the device is suitable for use in space-constrained environments and reduces the amount of components that need to be assembled on a PCB. Its operational frequency can be adjusted up to 600kHz, and it provides the user with an adjustable undervoltage lockout, soft-start, and holdup timer. The device is available in various package types, ranging from 8-pin DIP, SOIC-14 and DIP-14.

Working Principle of HIP4086AABZT

The HIP4086AABZT is a dual channel gate drive IC, with one output optimized for low-side driving and the other for high-side driving. The low-side channel effectively operates at a fixed voltage and powers up two low-side FETs, while the high side channel is adjustable with a programmable voltage from 0 to 16V. The high-side channel is able to adjust the orientation of the pass FET, allowing control of the current flow direction; this is useful in boosting applications where the current flows in a reverse direction.

The device operates when it receives a control signal, usually a logic level signal, this is then translated into electrical pulse train routed to the FETs (High side & low side). If the control signal is set to a low state, the FETs will turn off, if set to a high state they will switch on. The device also has adjustable parameters, such as input overvoltage protection and output undervoltage lockout, which help to provide safety and maintain stability in the circuit.

In conclusion, the HIP4086AABZT is a versatile, robust and highly adjustable gate driver which can be employed to drive FET in buck, boost and other types of power supplies. Its dual channel design provides for bidirectional control, while its adjustable parameters allow users to tailor the gate driver performance precisely to their needs.