BD8960NV-E2 Integrated Circuits (ICs)

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BD8960NV-E2 is a DC-DC Buck PWM controller IC with integrated built-in 5V voltage regulator, designed for efficient, low cost and low standby power consumption application. It integrates efficient PWM control with the practice of master-slave control structure, making BD8960NV-E2 well suited for low power applications. In addition, it also supports electronic load hot swap design.

Application Field

BD8960NV-E2 is commonly used in low power applications such as cell phones, digital cameras, and portable media players. It delivers a maximum output current up to 2A, making it ideal for small smps designs such as those used for Wi-Fi, Bluetooth, and GSM/GPRS modules. It also provides an ideal solution for portable applications that require low standby power consumption, such as game console and automotive applications.

Working Principle

BD8960NV-E2 features an advanced digital control architecture which enables smooth and precise operation in light load conditions while providing fast response to sudden load changes. The BD8960NV-E2 employs a master-slave control structure, with the master controlling the duty cycle and the slave controlling the voltage of the output stage. The voltage regulation loop can be either enabled or disabled, depending on the application requirements. The switching frequency can be dynamically adjusted to optimize efficiency in light load conditions.

The output voltage is set by a voltage reference voltage generated from the internal oscillator and DAC. The operating frequency of BD8960NV-E2 is automatically controlled by the internal two-stage PWM architecture. An additional standby function helps reduce standby power consumption. This feature is enabled when both the load current and the total output current drops below a certain threshold.

In addition, BD8960NV-E2 uses a proprietary dead-time control scheme which ensures that the switch transistors of the output stage are not being turned on simultaneously. This not only prevents current stress on the switch transistors but also helps improve efficiency and reduce switching noise. Furthermore, BD8960NV-E2 has built-in protection circuits that protect the device from abnormal operating conditions, such as an over current or over temperature condition.

Conclusion

BD8960NV-E2 is an DC-DC buck PWM controller IC with integrated 5V voltage regulator, suitable for low power applications such as cell phones, digital cameras, and portable media players. It features an advanced digital control architecture that uses a master-slave control structure with adjustable switching frequency, for efficient and fast response to sudden load changes. Its standby function helps reduce standby power consumption, and it is protected from abnormal operating conditions.

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