NCV33163DWR2G

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NCV33163DWR2G, a family member of ON Semiconductor DC/DCvoltage regulators, is a high efficiency, low noise, cost-effective DC/DC switching regulator that can step down voltage to the desired output, while providing optimal performance to the application system.

NCV33163DWR2G is an ideal choice for applications that require an adjustable output voltage, high-efficiency conversion and thermal protection. It is also highly efficient due to its synchronous rectification, allowing a very low quiescent current drawn from the input voltage. The device operates at a fixed switching frequency.

Applications

NCV33163DWR2G is suitable for many of today\'s portable electronic applications, such as telecom infrastructure and medical imaging applications. These applications require a high-efficiency, high-reliability switching regulator that can easily be designed. In addition, the NCV33163DWR2G is also suitable for automotive applications that require radio-frequency interference (RFI) suppression.

Working Principle

The device shows a step-down function in order to adjust an output voltage from any given input voltage as required by the application. It operates by converting energy from an input voltage source to an output voltage. This process is accomplished through P-channel and N-channel MOSFETs in synchronous mode. The device is driven by an oscillator, the frequency of which is set through the Enable and EQ pins.

The device includes a voltage loop which constantly monitors the output voltage and adjusts that voltage to reach the desired value by controlling the On-time duty cycle of the switch. The duty cycle of the device is determined by programming the Enable and EQ pins. When the duty cycle is adjusted, the device produces the output voltage accordingly. The Enable pin comes in two different configurations, low and open.

The output voltage is regulated by an internal voltage reference. This voltage reference generates a regulated voltage for the feedback loop. When the output voltage is higher than the reference voltage, the duty cycle is shortened until the desired output voltage is achieved. Conversely, if the output voltage is lower than the reference voltage, the duty cycle is prolonged until the voltage falls within the specified tolerance range.

Conclusion

NCV33163DWR2G is a highly efficient, low-noise, cost-effective DC/DC switching device that can meet the needs of many applications in the telecommunication, medical and automotive industries. In addition, it operates at a fixed switching frequency and utilizes synchronous rectification to allow very low quiescent current drawn from the input voltage. The device exhibits an adjustable output voltage through the voltage loop and an internal voltage reference, which controls the duty cycle to achieve the desired output voltage.

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