TC7660EOA

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The TC7660EOA is a DC-DC switching regulator type Voltage Regulator, which belongs to the family of PMIC (Power Management Integrated Circuit). The device is designed to offer efficient, cost effective and fast switching regulator circuit solutions.

The TC7660EOA offers two main features – a regulated voltage output and a high switching frequency. The device does not require a snubber network in its system for assisting in delivering smooth switching. This helps cut down on external components that are needed for the single-stage controller.

The TC7660EOA can achieve a continuous output current up to 4A and a peak output current up to 14A. Its maximum input voltage can reach up to 40V, while its output voltage can be adjusted. The voltage adjustment range is ±5% of the output voltage. The switching frequency can be adjusted to any value between 500Hz and 1MHz.

The TC7660EOA also has an active current limit feature that allows users to precisely control the current under which it will operate. This helps to ensure the safety of the system by avoiding the potential danger of overcurrent. It also has the ability to detect fault events and take necessary and timely steps to protect the system.

The TC7660EOA have various applications, such as controlling motors and other inductive loads, as well as in automotive applications and portable electronic products. Its low quiescent current and wide operating temperature range make it a suitable choice for these power-sensitive applications.

Regarding its working principle, the TC7660EOA is an adjustable voltage step-down DC-DC regulator. When the input voltage is greater than the output voltage, the device will switch its internal MOSFET between the two nodes in a pulse width modulation (PWM) mode. This switching frequency is normally between 500Hz to 1MHz and its duty cycle is proportional to the output voltage difference, meaning the higher the difference, the higher the duty cycle.

The respective On and Off times, or duty cycles, determine the output voltage as a result of the inductors and capacitors contained in the switching regulator circuit. The MOSFET will be driven between two frequency divisions; the one transition from On to Off is called the slope compensation where a ramp voltage is formed across the inductor. The transition from Off to On is called the current limit feature as this regulates the peak current in the circuit.

In conclusion, the TC7660EOA is a type of efficient, low-cost and fast switching regulator circuit type PMIC, which can be applied in various applications. It works with the principle of adjusting the duty cycles of the internal MOSFET, which will determine the voltage output.

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