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Silanna Semiconductor delivers efficient family of DC-DC convertors

Silanna Semiconductor has launched their newest family of wide voltage, high-frequency point of load converters targeting USB-PD applications.

The SZPL3102A/3103A family of two DC-DC converters (Buck Regulators) operate up to 2MHz, delivering wide input and output range converters that support up to 24VDC input in a tiny 3mm X 3mm QFN.

According to the company, the SZPL3102A and SZPL3103A have unique features that optimise their performance in USB port power supply applications. Extremely low operating power dissipation enables very low no-load power that is an important specification for regulatory certification. In addition, the SZPL3102A contains a momentary internal feedback path that allows for clean and well controlled start-up operation until external USB-PD controllers can bias themselves and take over control of the output voltage.

Silanna has incorporated internal and external Resistor Divider flexibility for custom design support. The SZPL3102 Includes a momentary internal FB Resistor Divider that allows time for some PD controllers to power up and take smooth control.

The SZPL3103 has been designed to allow for an external FB Resistor divider for stand-alone operation and co-operation with other USB port controllers using an external divider network.

Key Features:
• Optimal for USB PD and Fast Charging
• 18W, 27W, 45W up to 65W PD-ports
• Up to 2 MHz Switching Frequency for Compact Designs
• 3.3V to 21V Output at 3.25A (covers USB-PD 3.0 and PPS applications)
• 8V to 27V Input
• Dual Input LDOs (VIN and VOUT) for Product Bias Optimizes Overall Efficiency
• Space saving 3mm x 3mm QFN package

Neil Tyler

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