IR2131PBF

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Power Management Integrated Circuits, or PMICs, are microchips designed to manage a wide range of different power systems. Among the many types of PMICs available for wide-ranging applications, Gate Drivers are widely used to boost and manage the performance of power systems. IR2131PBF is one such example of a Gate Driver application, specifically designed to control the current from Power MOSFETs and IGBTs.

IR2131PBF Overview

IR2131PBF is a high-speed, high-performance driver type product used to power the control terminal of Power MOSFETs and IGBTs used in DC-DC converters and variable speed motor drives. It is a dual-channel, non-isolated IC in a 16-pin DIP package and is powered by 12V VCC.

The IR2131PBF has a logic supply pin (12V VCC) and three complementary HIN, LIN and COM pins used to enable and control the output. It also has a enable/disable pin (E/D), a chip-enable pin (CE) and a logic supply pin (VSS) for additional control.

IR2131PBF Application Field

The IR2131PBF is most suitable for use in automotive, industrial, LED lighting, consumer, telecommunications and computer applications. It is particularly effective when combined with power MOSFETs and IGBTs in applications such as AC inverters, DC-DC converters, and brushless motor drives.

The device is also a great choice for power systems running at high frequencies (up to 20kHz) and those that require high noise immunity and high ESD protection. It can function efficiently in various environmental conditions and has a wide operating temperature range of -40 to 125°C.

IR2131PBF Working Principle

At its core, the IR2131PBF is a low-impedance gate driver with a low on-resistance and a high off-state current blocking capability. The device operates with input voltages ranging from 5V to 18V and can handle current levels up to 0.5A. It has an integrated protection circuit to protect against over-temperature, over-current, and under-voltage conditions.

The HIN and LIN pins act as independent logic outputs with controllable fall and rise times regulated by the on/off switch and output enable/disable inputs. Both HIN and LIN are enabled by applying a logic-level “ON” signal to the E/D pin. If both outputs are enabled, the output voltage supplied to the gate is a peak voltage of 15V and output current of 0.5A. The peak output current of 0.5A is limited to prevent damage to the gate.

The COM pin is used to provide the power-ground connection between the IGBT and the IC. It must be connected to the source of the switch, usually a negative voltage rail. This ensures that the drain and gate of the IGBT are at the same potential when the device is disabled, thus avoiding any discharge current.

Conclusion

The IR2131PBF is a low-impedance, high-performance gate driver designed to control the current from Power MOSFETs and IGBTs and is suitable for use in a wide variety of applications. It has a logic supply pin, and three complementary HIN, LIN and COM pins used to enable and control the output, with an integrated protection circuit to protect against damage. This device is an excellent choice for high-frequency power systems requiring high noise immunity and ESD protection.

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