MAX17500AEUB+

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Introduction to MAX17500AEUB+

The MAX17500AEUB+ is a high-efficiency, wide-input range Pulse Width Modulation (PWM) synchronous boost controller. It is designed to deliver efficient, low-noise performance from directly rectified AC power sources, such as wall adapters, battery banks, and fuel cell chargers. It features a wide, 3.2V to 60V input voltage range and adjustable output voltage up to 75V, as well as programmable output current limit and voltage accuracy. The MAX17500AEUB+ maximizes efficiency and system performance over a broad input voltage, input current, and output load range.

Application Field of MAX17500AEUB+

The MAX17500AEUB+ has a wide range of applications, including automotive forward lighting, LED backlighting and industrial power supplies. It is also suitable for charging 36V/48V/60V battery packs, as well as providing power to high-power load systems. The high-precision output voltage accuracy, adjustable switching frequency and integrated soft-start enable the MAX17500AEUB+ to be widely used in power supplies with stringent regulation requirements.

Working Principle of the MAX17500AEUB+

The MAX17500AEUB+ employs a Pulse Width Modulation (PWM) mode of operation. In this mode, a clock oscillator generates pulses whose pulse widths are being modulated by the device’s feedback control loop. By varying the ratio between the on-time and off-time of the pulses, the output voltage can be promptly adjusted to maintain the output voltage accuracy. A typical clock frequency of the MAX17500AEUB+ is 200kHz, allowing sufficient ripple attenuation on the output.

The internal control loop further improves the overall system performance. The loop includes the control algorithms, feedback compensation, slope compensation, soft-start, and input voltage/current monitor. The feedback loop adjusts the pulse width in order to regulate the output voltage. The slope compensation helps keep the loop stable at light or no load conditions. The programmable soft-start mechanism helps to gradually ramp up the output voltage at start-up, while the dynamic input voltage/current monitor helps to adjust the output voltage automatically depending on the input voltage.

Summary

The MAX17500AEUB+ is a high-efficiency, wide-input range Pulse Width Modulation (PWM) synchronous boost controller. It has a wide range of applications, including automotive forward lighting, LED backlighting, industrial power supplies, charging 36V/48V/60V battery packs, and providing power to high-power load systems. It operates in a PWM mode and has an adjustable switching frequency and integrated soft-start control, making it an ideal choice for power supplies with stringent regulation requirements.

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