S-8357G50MC-MJJT2U

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The S-8357G50MC-MJJT2U is a 3-Phase DC/DC Switching Controller for advanced switching-mode DC/DC power supply applications. It is specifically designed for automotive applications, featuring a wide input voltage range, a wide output voltage range, and an on-chip current-mode control with both periodic and aperiodic cycling. The S-8357G50MC-MJJT2U is ideal for a wide range of applications, including automotive battery management, motor drives and control, and power supplies for industrial control and instrumentation. As an added benefit, the S-8357G50MC-MJJT2U is designed to be pin-for-pin compatible with the popular S-8357G50MC-MBTX2U.

Application Field

The S-8357G50MC-MJJT2U is designed with automotive applications in mind, but its wide input voltage range, wide output voltage range, and on-chip current-mode control makes it a versatile and flexible solution for a wide range of other applications. It is suitable for high current and high frequency applications, for up to 1500V input voltage and up to 500V output voltage. It can be used for Buck, Boost, Buck-Boost and Three-Phase Inverting topologies, as well as for DC-DC converters requiring very fast transient response.

The S-8357G50MC-MJJT2U is suitable for battery management, motor drive and control, and power supplies for industrial control and instrumentation. It can also be used for communications, computer and networking applications, in which the wide output voltage range and precise voltage regulation are necessary. Additionally, the device is fully compatible with the majority of digital controllers found in the industry, making it an ideal choice.

Working Principle

The S-8357G50MC-MJJT2U operates by engaging a power switch on the input voltage side, and then switching the power MOSFET on the output side to regulate the output voltage. The device uses a periodic and aperiodic control technique to achieve fast transient response and precise voltage regulation. The periodic and aperiodic control techniques feature instantaneous peak current sampling, duty-cycle pulse width modulation, and slew rate control for smooth control of voltage and current.

The S-8357G50MC-MJJT2U also features an integrated on-chip high-voltage power switch, allowing for high-efficiency performance. The integrated power switch features a variable frequency switching capability and a wide operating temperature range. The device also includes several protections such as over-voltage protection, thermal protection, and over-current protection. These protections ensure that the device will not be damaged in the case of an event such as a short circuit.

Overall, the S-8357G50MC-MJJT2U is a highly versatile and reliable DC/DC switching controller designed to be used in advanced power supply applications. Its instantaneous peak current sampling, duty-cycle pulse width modulation, and slew rate control help ensure fast transient response and precise voltage regulation, while its integrated high-voltage power switch ensures high-efficiency performance. Its compatibility with digital controllers and its wide array of protective features make it an ideal choice for a wide range of applications.

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