PI Introduces New Series Of AEC-Q100 Qualified Gate Drive ICs

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  • The SID11x2KQ is a single-channel IGBT and MOSFET driver in an ESOP package
  • This current is sufficient to drive IGBTs and MOSFETs up to 600 A (typical)
  • According to the company, the driver features additional features such as short-circuit protection (DESAT) and Advanced Soft Shut Down (ASSD)

Power Integrations has been working in gate-driver technologies for medium- and high-voltage inverter applications. They recently announced the launch of its automotive-qualified SID1181KQ SCALE-iDriver™ gate driver. The driver is intended to be used with 750 V-rated IGBTs. This new product seems to expand the company’s range of auto-qualified driver ICs.

The SID11x2KQ is a single-channel IGBT and MOSFET driver in an ESOP package. PI’s Fluxlink technology provides reinforced galvanic isolation to the device. The driver can provide an output current of up to 8A. This current is sufficient to drive IGBTs and MOSFETs
up to 600 A (typical). It can drive this amount of current load without using any additional active components.

Unipolar Isolated Voltage Source

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An external amplifier can be added with the driver. This amplifier can meet the gate drive requirements and exceeds the stand-alone capability of the SID11x2KQ. It also consists of a unipolar isolated voltage source. It provides the positive and negative voltages for controlling the gate voltages of the driver.

Supports Soft shut down feature

According to the company, the driver features additional features such as short-circuit protection (DESAT) and Advanced Soft Shut Down (ASSD). It also features an under-voltage lock-out (UVLO) for primary-side and secondary-side and rail-to-rail output. It provides a temperature and process compensated output impedance that guarantees safer
operations in harsh conditions.

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Works on Power Integration’s Fluxlink technology

The gate Controller (PWM and fault) signals are compatible with 5 V CMOS logic. It can also be adjusted to 15 V levels. It can be done using an external resistor divider. The device is claimed to be compact, efficient and robust. This new driver IC uses Power Integration’s FluxLink communications technology. It ensures system safety even during fault conditions.

Can replace optocouplers of the circuit

FluxLink technology dramatically improves the reliability and isolation capability of the new
AEC-Q100-qualified gate drivers. It replaces optocouplers and capacitive or silicon-based
inductively coupled solutions.

Michael Hornkamp, senior director of marketing for automotive gate-driver
products at Power Integrations talked about the product saying,

“The SCALE-driver family with FluxLink technology supports safe, cost-effective designs for a wide range of IGBT drivers for electric vehicle applications including powertrain, on-board chargers and charger stations, and other high-reliable drivers and inverters.”

Minimises external components

SCALE-driver ICs minimize the number of required external components. This eliminates the tantalum and electrolytic capacitors and simplifies the isolated power supply. These gate drivers also follow AEC-Q100 standards for automotive devices.

A simple two-layer PCB can be used for further increasing design simplicity and easing the supply-chain management. Power Integrations’ AEC-Q100-qualified SCALE-driver SID1181KQ gate drivers are available now, priced at $4.81 in 10,000-piece quantities. Technical information is available from the Power Integrations website.


 

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