Description:The iW1760B improves on the performance of Renesas' iW1760 AC/DC controller by reducing the output voltage ripple to 1% on a 12V output voltage, increasing the Vcc input voltage range up to 25V and increasing robustness with extra protection features. The iW1760B meets the US DoE’s external power supply standard and the EU’s Code of Conduct, Version 5, Tier 2 standard by offering no-load power consumption of < 50mW while complying with active mode minimum efficiency requirements.The iW1760B also incorporate
Renesas provides a recommended PCB layout guide in their application note (R01AN4461EJ0100) which includes thermal design considerations, such as thermal vias, copper pours, and component placement, to ensure optimal thermal performance.
The IW1760B-00 has a built-in overcurrent protection (OCP) feature, but it's not enabled by default. To implement OCP, you need to set the OCP threshold using the I2C interface and enable the OCP function by setting the appropriate register bits. Refer to the datasheet and application notes for detailed instructions.
According to Renesas, the maximum allowed voltage on the VCC pin during power-up and power-down sequences is 6.5V. Exceeding this voltage may damage the device. It's essential to ensure that the power supply voltage ramps up and down slowly to prevent voltage overshoots.
To troubleshoot I2C interface issues, use a logic analyzer or oscilloscope to monitor the SCL and SDA lines. Check for proper clock frequency, signal integrity, and slave address recognition. Also, ensure that the I2C bus is not overloaded and that there are no conflicts with other devices on the bus.
The recommended operating temperature range for the IW1760B-00 is -40°C to 125°C. However, the device can operate up to 150°C for short periods during power-up and power-down sequences. Always check the datasheet and application notes for specific temperature-related guidelines.
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IW1760B-00 Overview
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