ICE3B5065PBKSA1

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ICE3B5065PBKSA1 is an adjustable DC/DC synchronous buck converter with PSR (Primary Side Regulation) technology. It uses a proprietary boundary conduction mode with valley-fill method to implement primary regulation. The PSR technique eliminates the hassle of external opto-coupler, feedback loop and voltage sensing components, unlike traditional primary-side regulation solutions.

The application field of ICE3B5065PBKSA1 mainly in power supply design where outputs should be accurately regulated with high efficiency and fast transient response, such as LED driver, PoE application, industrial power supply, and telecom system. The power supply that uses ICE3B5065PBKSA1 can provide a wide input voltage range, typically from 9V to 72V. The output power can reach up to 50W. In addition, it features an automatic self-protection function to prevent over-current, over-temperature, and short-circuit protection.

The working principle of ICE3B5065PBKSA1 begins with the input current, which is reactively filtered, then rectified and stored in the input capacitor. The voltage stored in the input capacitor is then supplied to the MOSFETs, which cause them to rapidly convert the current into a PWM signal. This PWM signal is then sent to the resonant network, which is composed of the inductor, and resonant capacitor, to generate precise frequency steps, allowing the current to flow through the synchronous rectifiers, which then generate output power.

Finally, the output voltage is monitored by the PSR technology, which may vary with the temperatures, load current and other controlled parameters, and provide the precise regulation. PSR technology is capable of providing three times better regulation than traditional primary-side regulation solutions. This can ensure fast transient response and a stable, precise output voltage. All adjustments and features of ICE3B5065PBKSA1, such as frequency control, output current limit, and output voltage control are set by a simple Potentiometer.

In conclusion, the ICE3B5065PBKSA1 is an ideal solution for designers who require a highly efficient and accurate DC/DC synchronous buck converter with PSR technology, suitable for LED driver, PoE application, industrial power supply, and telecom system. The PSR technology allows for easy, precise regulation and dynamic compensation, removing all external opto-coupler, feedback loop and voltage sensing components, making the design shorter and simpler.

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