LM5100CSDX/NOPB

Introduction

The LM5100CSDX/NOPB is a triple-channel Gate Driver designed for driving high-current IGBTs or MOSFETs in power switching applications. This Driver is capable of delivering a logic level high-side-supply voltage, up to 15V, that is relevant to its application field. It features a very low stand-by current consumption and a low-saturation voltage, making it well-suited for use in power-device applications.

Application field

The LM5100CSDX/NOPB can be used in a wide range of applications. It is especially suited for driving power switching devices such as IGBTs and MOSFETs in motor drives, welding applications, and industrial motor control applications. It can also be used in power supplies, inverters, uninterruptable power supplies (UPSis), and other power applications.

Working principle

The LM5100CSDX/NOPB uses three gate-drivers to provide a triple-channel driver. It uses two internal power supplies, one low-side-supply (LSVDD) and one high-side-supply (HSVDD). The LSVDD provides the low-side gate-driver with an ensured switching voltage level as required for IGBTs and MOSFETs in the application. The LSVDD supplies the logic-level control signals to the low-side-gate-driver, and therefore opens and closes the switch.

The HSVDD supplies the high-side-gate-driver. The Gate Driver is designed to provide a logic-level high-side-supply voltage up to 15 V. Depending on the switching voltage requirements of the IGBTs or MOSFETs connected, the high-side-supply (HSVDD) can be configured to deliver either a logic-level or a floating-level voltage. The HSVDD voltage is also adjustable and can be externally set to any required voltage level up to 15 V.

The drivers are connected together using two external drivers. These drivers provide the LM5100CSDX/NOPB with a high-side logic-level driver and a low-side logic-level driver. The drivers are bidirectional, allowing the drivers to be used in either the open-drain or the push-pull configuration. The LM5100CSDX/NOPB is designed to operate within a wide range of input voltages (2.5V to 5.5V).

The LM5100CSDX/NOPB is compatible with a variety of control signals, such as pulse-width modulated (PWM) signals and sinusoidal pulse-density-modulated (SPDM) signals. The LM5100CSDX/NOPB can operate at temperatures ranging from –40°C to 125°C and can also operate at up to 100KHz of switching frequency.

Conclusion

The LM5100CSDX/NOPB is a triple-channel Gate Driver designed for driving high-current IGBTs or MOSFETs in power switching applications. It is especially suitable for high power applications and can operate with high switching frequencies up to 100KHz. The LM5100CSDX/NOPB is designed to operate over a wide range of input voltages, temperatures, and switching frequencies, making it an ideal choice for a wide range of power-switching application.