UCC3806N

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High-efficiency, low-noise power conversion solutions for DC/DC applications can be found with the UCC3806N, a 5.5V synchronous buck controller. This device enables DC/DC conversions in notebook power, peripheral, and telecom applications. In addition to preserving load transients, the UCC3806N is designed to reduce output noise and deliver high efficiency.

First, the UCC3806N simulates a transformer in a full-bridge configuration as the primary side and a center-tapped baseplate capacitor as the secondary side. The device then operates in a synchronous rectification mode with a pulse that has a duty cycle proportional to the output current. This technique delivers efficiency and preserves the output transients. In contrast to the PWM mode, the output current of the UCC3806N can be controlled with a linear regulator. Thus, the UCC3806N can provide stable, low-noise operation. This can be especially beneficial for notebook, peripheral, and telecom applications.

The UCC3806N is designed to meet the requirements of notebook, peripheral, and telecom applications with an integrated high/low-side driver, two linear drivers, a temperature warning system, and other features. The device features a 5.5V output voltage range, 1.1A peak current, an efficiency that reaches up to 92%, and a 20MHz PWM frequency. Furthermore, the UCC3806N integrates several safety features including a current limit, an inductor fault protection, and a temperature warning system. All of these features are designed to provide reliable and stable operation, even in challenging electrical environments.

The UCC3806N also includes a digital soft-start and a soft-stop function. These functions reduce the inrush current and the output voltage glitches when the device is enabled or disabled. Additionally, the UCC3806N includes an asynchronous bulk capacitor discharge circuit which allows the output voltage to be discharged even when the device is not enabled. This feature ensures that there is no residual charge left on the output capacitor when the device is switched off. The device also includes several other features specifically designed to ensure a smooth transition between the different operating modes.

In summary, the UCC3806N is a versatile DC/DC switching controller ideal for notebook, peripheral, and telecom applications. It offers a high degree of efficiency and preserves output transients. The UCC3806N also integrates a host of features optimized for reliable, high-efficiency operation. It integrates a 5.5V output voltage range, 1.1A peak current, a high/low-side driver, two linear drivers, a temperature warning system, a digital soft-start and a soft-stop function, and an asynchronous bulk capacitor discharge circuit.

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