Description:3.3 V and 5 V Input Logic Compatible ; Extended Allowable Negative VS Swing to -9.8 V for Signal Propagation at VBS=15 V ; 3 Half-Bridge Gate Driver ; Built-in Shoot-Through Prevention Circuit for AllChannels with 270 ns Typical Dead Time ; Floating Channel for Bootstrap Operation to +600 V ; Built-in UVLO Functions for All Channels; Matched Propagation Delay Time Maximum: 50 ns ; Built-in Common Mode dv/dt Noise Canceling Circuit; Typically 350 mA / 650 mA Sourcing/Sinking Current Driving Capability for Al
A good PCB layout for the FAN7388MX involves keeping the input and output capacitors close to the IC, using a solid ground plane, and minimizing the length of the high-current paths. It's also recommended to use a shielded inductor and to keep the switching node (SW) away from sensitive analog circuits.
The inductor value depends on the input voltage, output voltage, and desired switching frequency. A good starting point is to use the inductor value calculation formula provided in the datasheet. Additionally, consider the inductor's saturation current, DC resistance, and core material when selecting an inductor.
The FAN7388MX is rated for operation from -40°C to 150°C (junction temperature). However, the maximum ambient temperature range depends on the specific application and the thermal design of the system. A good thermal design should ensure that the junction temperature remains within the specified range.
Yes, the FAN7388MX can be used in a synchronous rectification configuration. However, this requires additional external components and careful design consideration to ensure proper operation. It's recommended to consult the datasheet and application notes for more information.
To troubleshoot issues with the FAN7388MX, start by checking the PCB layout, component values, and soldering quality. Verify that the input and output capacitors are properly connected and that the inductor is suitable for the application. Use an oscilloscope to observe the switching node and output voltage waveforms, and consult the datasheet and application notes for guidance.
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FAN7388MX Overview
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