Description:The ISL73847M is a synchronous buck controller that can operate as a single or dual-phase controller. It works with the ISL71441M (half-bridge GaN FET driver) to generate point-of-load voltage rails for commercial space applications.It accepts an input voltage range of 4.5V to 19V with a programmable PWM output switching frequency between 250kHz and 1.5MHz with a single resistor. The output can regulate a voltage upwards of 600mV and is limited on the top end by the minimum off time and selected switching f
The recommended PCB layout for optimal performance can be found in the ISL73847M30BZ evaluation board user manual or by contacting Renesas Electronics Corporation's technical support team. A good layout should minimize parasitic inductance and capacitance, and ensure good thermal dissipation.
The selection of input and output capacitors depends on the specific requirements of your application, such as the input voltage range, output voltage, and ripple current. Renesas provides guidelines for capacitor selection in the datasheet, but it's recommended to consult with a capacitor manufacturer or a Renesas FAE for specific recommendations.
The maximum operating temperature range for the ISL73847M30BZ is -40°C to +125°C, but it's recommended to derate the device's performance at higher temperatures to ensure reliability and longevity.
To ensure EMC in your design, follow good PCB layout practices, use shielding and filtering components as necessary, and consult with Renesas' EMC guidelines and application notes. It's also recommended to perform EMC testing and certification for your final product.
The recommended soldering process for the ISL73847M30BZ is a reflow soldering process with a peak temperature of 260°C. It's recommended to follow the soldering guidelines provided in the datasheet and to consult with a soldering expert if you're unsure about the process.
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ISL73847M30BZ Overview
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