MAX16962RATEA/V+T

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MAX16962RATEA/V+T is a high-efficiency, non-synchronous, step-up DC-to-DC switching regulator that can deliver up to 6A of output current. It is a member of the MAX16962 family of automotive power management products. The MAX16962RATEA/V+T integrates a 600V, 0.5 ohms power MOSFET, current-mode control, short-circuit protection, thermal overload protection and on-chip EMI filtering, while operating in a temperature range of -40 to +125°C.

The MAX16962RATEA/V+T can be used in a wide range of automotive applications, from supplying power to ECUs, sensors and other low-voltage microcontrollers to providing core supply voltages for system components such as FPGAs, DSPs and ASICs. It also features a wide input voltage range of 2.5V to 60V, making it ideal for automotive supply voltage applications.

The MAX16962RATEA/V+T offers superior efficiency, superior transient response and superb output accuracy over a wide load range. Its control loop has built-in line and load compensation, allowing for optimum control performance over a wide input and output voltage range. It has an adjustable switching frequency (400 kHz to 1 MHz) and can be programmed to achieve higher efficiency with average load using the maximum operating frequency of 1 MHz.

Application Field

The MAX16962RATEA/V+T is suitably applied for automotive ECUs, sensors, micro-controllers and other low-voltage applications. Other applications including providing a core supply voltage such as for FPGAs, DSPs and ASICs, Display, Battery Management Systems, Automotive Lighting Systems, Automotive Audio Systems, and Automotive Engine Control are also covered. Additionally, it is suitable for applications that use high-rate step-down regulator output such as automotive lighting systems and automotive audio systems.

Working Principle

The MAX16962RATEA/V+T features an open loop, current-mode control with integrated soft-start capability. An internal 0.5-ohm power MOSFET operates in voltage mode to program the output voltage. The MAX16962RATEA/V+T includes a PeS-IPM optimized for superior transient response and high efficiency at power levels up to 6A. The control loop of the MAX16962RATEA/V+T ensures fast response to line and load changes by incorporating a line and load compensation feature.

The MAX16962RATEA/V+T includes a voltage detector circuit with adjustable under-voltage (UV) and over-voltage (OV) trip points for controlling the power up and power-down sequence. Its OV and UV thresholds are programmable, allowing a designer to stay within their allocated pin count. The programmable OV and UV trip points support a wide range of start-up and shutdown conditions.

In the event of an internal or external fault, the MAX16962RATEA/V+T will deliver a pre-determined level of protection. Short-circuit protection is provided and is triggered when the output current exceeds its set point, which is programmable up to 10IOUT. Thermal shutdown is also provided and is activated when the die temperature reached its programmed trip point.

The MAX16962RATEA/V+T includes on-chip EMI filter circuitry built using low-cost, small-sized components that saves board space and improves EMI performance. It also includes a phase-shift PWM modulator circuit based on a cost-effective phase-shift PWM technique to prevent inrush current. This feature reduces EMI issues typically associated with synchronous converters.

Conclusion

The MAX16962RATEA/V+T is an ideal choice for a wide range of automotive applications. It provides superior efficiency, superior transient response and superb output accuracy over a wide load range. Its wide operating temperature range, short-circuit protection, thermal overload protection, and on-chip EMI filtering, combined with its wide input voltage range and programmable OV and UV trip points makes it an excellent choice for applications requiring a high-efficiency, non-synchronous step-up DC/DC switching regulator.

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