TL494CNG

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The TL494CNG is a pulse-width modulation (PWM) controller manufactured by Texas Instruments. It is used in a variety of applications including power supplies and motor controllers. The TL494CNG is classified as part of a family of PMIC (Power Management Integrated Circuit) Voltage Regulators, and in particular, DC DC Switching Controllers.

The TL494CNG is a synchronous buck output controller. It is designed to provide a current-mode control of two independent N-channel MOSFETs. It is comprised of two individual current-mode pulse width modulation (PWM) channels, each of which can provide up to 100mV of voltage resolution over its operating range. It also provides several protective features including under voltage lockout, over voltage lockout, current limit, and thermal shutdown.

The TL494CNG is ideal for switching power supplies, motor controllers and other applications where tight regulation and fast load transient response are required. It is powerful enough to provide up to 2A of Peak Output Current on each channel and incorporates internal dead-time control circuitry that allows for easy adjustment of the switching frequency ranging from 2kHz to 500kHz.

The TL494CNG is capable of operating both as a Buck or Buck-Boost controller. It provides a very compact solution due to its single-ended optimized gate drive, which eliminates the need for an external bias voltage. The device also incorporates several features to reduce electromagnetic interference, including spread-spectrum modulation, switching frequency synchronization, and synchronous rectification.

The TL494CNG comes in a small surface mount package that is ideal for high-density applications requiring tight regulation and fast response. The device is designed to operate optimally over a wide range of input voltages ranging from a minimum of 3V to a maximum of 32V, and a wide range of output voltages ranging from 0.8V to 28V. With these features, the TL494CNG can effectively meet the needs of a variety of different applications.

The TL494CNG works by first converting the input voltage to a pulse width modulated signal. The output impedance is controlled by the duty cycle of the input signal. This signal is then compared to the internal reference voltage, and the difference between the two is used to adjust the output power. The output power is regulated by adjusting the duty cycle of the PWM signal. This allows the device to have a wide range of voltage and current regulation capabilities.

The TL494CNG has several features that make it an ideal solution for regulating power in many applications. It is able to handle complex load switching requirements with fast transient response, and its dual-channel drive capability allows for a high efficiency operation. It also provides a wide range of circuit protection features, such as under voltage lockout, over voltage lockout, and current limit, which help to reduce the risk of damage to the circuit from electrical faults. Finally, the device’s spread-spectrum modulation and switching frequency synchronization reduce noise and improve EMI performance.

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