BD8163EFV-E2

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PMIC, or power management integrated circuit, is an electronic device that controls and monitors the power supply of an electronic system. Specialized PMICs are designed for specialized applications, such as the BD8163EFV-E2. In this article, we\'ll take a look at the application field and working principle of the BD8163EFV-E2.

Application Field

The BD8163EFV-E2 is a highly-integrated DC/DC converter with low-voltage bidirectional Buck-Boost Power Translator, which is developed to cover a wide range of applications including DC motor, battery powered embedded systems, wearables, and home appliances. It provides high efficiency, low quiescent current, and low noise.

The BD8163EFV-E2 has a high power conversion efficiency and a wide input voltage range. It has an operating input voltage range from 2.2 V to 5.5 V, with a minimum of 2.0 V and a maximum of 6.0 V. The VOUT-OVP (output over-voltage protection) is 3.2 V to 6.0 V. In addition, the switching frequency is variable from 750 kHz to 1500 kHz and the input over-voltage protection is up to 6.0 V.

The BD8163EFV-E2 also has programmable output voltage, where the output voltage can be adjusted from 0.9 V to 3.3 V. It also offers an output current monitoring, as well as over-current and over-voltage protection. It also features a shutdown protection, which is useful for much standby control.

Another key feature of the BD8163EFV-E2 is its current-mode control, which ensures fast system response. The device also provides a high resistor-adjustable current-mode switching frequency up to 3.2 MHz, when synchronized with an external clock. All this adds up to stable operation even at light loads.

Working principle

The working principle of the BD8163EFV-E2 is based on the buck-boost topology. As the name suggests, it combines the buck and boost converters, to create a converter that can both step up and step down the incoming voltage. The device has a low quiescent current of around 2.2 μA, and its low-noise performance is maintained when the device works in the active mode.

The BD8163EFV-E2 device has internal power MOSFETs, which are made of high quality N-channel MOSFETs on the high side, and P-channel MOSFETs on the low side. To control the voltage and current of the power supply, the device has a current-mode PWM controller. The PWM controller is responsible for controlling the switches on the high and low sides of the converter.

In the buck-mode operation, the device senses the output voltage using the voltage feedback loop. Using the voltage feedback loop, the PWM controller adjusts the duty cycle of the switches to keep the output voltage at the required level. In boost mode, the same feedback loop is used to sense the output voltage, and the PWM controller adjusts the duty cycle to keep the output voltage level as per the requirement.

The BD8163EFV-E2 also has internal protection circuits to protect the device from over-voltage and under-voltage conditions. It has under-voltage lockout and over-voltage protection circuits that protect the device from operating in unsafe conditions.

Conclusion

The BD8163EFV-E2 is a highly-integrated DC/DC converter with low-voltage bidirectional Buck-Boost Power Translator. It is suitable for a wide range of applications, including embedded systems, wearables, home appliances and DC motors. The device offers an operating input voltage range from 2.2 V to 5.5 V, with a minimum of 2.0 V and a maximum of 6.0 V. It has a programmable output voltage, an output current monitoring and over-voltage and over-current protection. In addition, the device features low-noise performance and high efficiency, due to its current-mode control and internal protection circuits.

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