E-UC3842BD1013TR

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The E-UC3842BD1013TR is a PMIC - AC DC Converters, Offline Switchers. It is a monolithic power integrated circuit which performs switched mode power conversion with active power factor correction (PFC). It is designed to deliver varied output power over a wide input voltage and operating temperature range. It provides cost-effective solution for AC-DC applications by combining off-line PFC and multi-mode power supply control.

The E-UC3842BD1013TR is ideally suited for high power applications such as desktop PC power supplies, consumer electronics, and industrial applications. It supports input voltage range from 85 VAC - 265 VAC. Furthermore, no external start-up resistor is required as the device operates from an internal power switch.

The E-UC3842BD1013TR is a high-performance, power factor corrected, single-stage AC/DC converter with low standby power. It provides a current mode control approach that enables fast transient response and excellent control of output voltage ripple. It has robust thermal protection circuitry and free-wheeling diodes that provide protection in overloads and short circuits.

The working principle of the E-UC3842BD1013TR includes the following steps:

• Detect input power from the rectified AC voltage and drive the internal power switch on and off;
• Generate a constant frequency pulse width modulated (PWM) output voltage to the inactive half-bridge;
• Drive active power factor corrector (APFC) outputs to adjust the input current to match the input AC voltage;
• Control the feedback voltage to regulate the output voltage and provide power factor correction.

The E-UC3842BD1013TR offers wide range of features to enable efficient operation with low EMI:

• ±8% typical voltage regulation accuracy;
• Input power factor correction greater than 0.9;
• On/Off soft-start;
• Automatic restart after overvoltage or no-load operation;
• Output overvoltage protection
• Output over current protection;
• Thermal shutdown and over temperature protection;
• Current limit protection with hiccup mode;
• Short-circuit protection with latch shutdown.

In terms of application fields, the E-UC3842BD1013TR can be used in desktop PCs, laptops and portable, computer motherboards, microprocessor based appliances and industrial applications. The product is designed to be highly reliable and efficient, and it has passed qualification and safety certification according to applicable standards.

In conclusion, the E-UC3842BD1013TR is a versatile power supply and AC-DC switching solution with wide input voltage range and multiple protection features. It is ideally suited for desktop, laptop and server applications, providing both power factor correction and high efficiency in a compact board-space package.

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