ISL6526IR

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The ISL6526IR is a DC-to-DC controller specifically designed for use in military, aerospace, and other applications that require high reliability. It offers a wide range of operating parameters, including an adjustable output voltage, an adjustable current limiting, and a soft-start feature. Additionally, the device provides a wide operating temperature range of -55 to +125 ℃. The device utilizes a low-side switching topology and is capable of operation up to 200V. With adjustable current-limit and soft-start features, and excellent EMI performance, this device is ideal for applications requiring reliable, high-performance DC-to-DC conversion.

ISL6526IR Application Field

The ISL6526IR controller is suitable for applications that require high reliability over a wide temperature range (-55 to +125 ℃). Examples of such applications include:

• To generate a regulated output voltage from a low voltage, high current source
• To boost unused lock-in voltage from a low voltage, high current source
• To generate a negative voltage from a positive voltage
• To operate as a single-phase buck-boost converter
• To operate as a dual-phase buck-boost converter
• To operate as a flyback converter
• To operate as a current mode boost converter
• To regulate an output voltage with an adjustable current limit
• To provide power to solid-state relays
• To convert a low voltage energy source to a higher voltage energy source

The device can be used in military, aerospace, and other applications that require high reliability, as well as in industrial, automotive, and telecommunications applications. It is also suitable for use in medical devices, renewable energy systems, and other applications where high efficiency and performance are critical.

ISL6526IR Working Principle

The ISL6526IR controller is a high-performance, current-mode, low-side, single- phase buck-boost, or dual phase buck-boost DC-to-DC converter. The device uses a low-side topology for improved efficiency in high power applications. The device senses the input voltage and open-end current and adjusts the switching frequency and output voltage to maintain the desired output voltage and regulated current. The device allows an adjustable output voltage and adjustable current limit.

The device includes a programmable soft-start feature that allows the output voltage to ramp up gradually to avoid over-current and output transients. The device also includes an adjustable over-current protection (OCP) feature that limits the output current to a safe level in the event of an over-current condition. The device also has an adjustable over temperature protection (OTP) feature that shuts down the device in the event of an over temperature condition.

The device has an efficient pulse-width modulation (PWM) control stage that allows for a wide range of switching frequencies from 5 kHz to 200 kHz. The device achieves high efficiency across a wide range of switch ratios. The device has excellent EMI performance and provides a low noise power supply with low output ripple voltage.

In addition to these features, the device also includes a range of protection features, such as over-voltage protection (OVP), under-voltage protection (UVP), and over-temperature protection (OTP). The device offers a high power density solution in a very small package.

In summary, the ISL6526IR controller is a high-performance and reliable DC-to-DC switching controller specifically designed for use in military, aerospace, and other applications that require high reliability and performance. It offers an adjustable output voltage, adjustable current limiting, and soft-start features for improved safety, efficiency, and output voltage regulation. The device has a wide operating temperature range and provides excellent EMI performance.

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