MAX15012DASA+

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MAX15012DASA+ is a monolithic, high-current gate-driver IC used for driving power MOSFETs and IGBTs for high-power synchronous buck applications. It incorporates numerous features that are essential to satisfy the performance and size requirements of today’s high-current power conversion in automotive, medical, industrial, and consumer applications. The MAX15012DASA+ is ideal when used in combination with the latest 300V and 400V ICs, such as buck controllers, integrated PFC controllers, and LLC resonant controllers.

Application field of MAX15012DASA+

The MAX15012DASA+ features a plateau voltage drive scheme for superior noise immunity and low EMI, and it improves efficiency with a 0.5Ω integrated low RDS(ON) output MOSFET. The IC also includes a bootstrap diode, allowing the user to reduce design complexity and cost while handling high transient currents and improving device reliability. The MAX15012DASA+ also provides superior current-limit protection when used with PMOS devices and excellent drift stability over temperature. This makes it applicable in a wide range of high-power applications, including automotive, medical, industrial, and consumer systems. It can be used in synchronous buck converters, automotive systems, DC/DC converters, and high-current load switches.

Working Principle of MAX15012DASA+

The MAX15012DASA+ is capable of driving both an NMOS low-side FET and an N-Channel high-side FET, or an NMOS low-side FET and a PMOS high-side FET. The device is operated using a logic control signal. When the logic control signal (Logic_E) is low, the low-side FET is turned on and the high-side FET is turned off. When the logic is high, the low-side FET is off and the high-side FET is on. This allows the user to configure the device to operate in either buck mode or boost mode, depending on the application requirements.

The MAX15012DASA+ output stage is based on a plateau voltage drive scheme, which consists of two NMOS output transistors connected in a complementary manner, with a bootstrap diode in between. This allows the high-side FET to be driven at a constant voltage, while the low-side FET is driven at a constant current. This results in improved noise immunity, superior EMI performance, and faster rise and fall times as compared to traditional pulse-width modulation (PWM) solutions. Additionally, the plateau voltage drive scheme allows the user to configure the output stage for either a low-side or a high-side driver.

The MAX15012DASA+ features a 0.5Ω integrated low RDS(ON) output MOSFET. This allows the device to handle high transient currents, and it also significantly reduces design complexity, as the device can be used without external MOSFETs. Additionally, the device has excellent current-limit protection when used with PMOS devices and excellent drift stability over temperature, allowing it to operate reliably and efficiently in a wide range of applications.

In summary, the MAX15012DASA+ is a monolithic, high-current gate-driver IC used for driving power MOSFETs and IGBTs for high-current power management applications, including automotive, medical, industrial, and consumer systems. Its plateau voltage drive scheme provides superior noise immunity and low EMI, and its 0.5Ω integrated low RDS(ON) output MOSFET allows the device to handle high transient currents. Additionally, the device has excellent current-limit protection and drift stability over temperature, making it an ideal choice for high-power synchronous buck applications.

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