Interfacing The Msp430 And Tmp100 I2c Temperature Sensor

The IR3721 is a versatile power or current monitoring integrated circuit (IC) designed for low-voltage DC-DC converters. It monitors the inductor current in buck or multiphase converters by utilizing either a current sensing resistor or the inductor's winding resistance (DCR). The output (DI) is a pulse code modulated signal with a duty ratio that is proportional to the inductor current. An analog voltage proportional to power can be obtained by connecting VK to VO and incorporating an RC filter to the DI output. The IR3721 employs patent-pending TruePower technology to accurately capture highly dynamic power waveforms typical of microprocessor loads. This technology is developed by International Rectifier Corp.

The IR3721 integrated circuit is specifically designed to enhance the performance of low-voltage DC-DC converters by providing accurate monitoring of power and current. Its capability to monitor inductor current through various methods, including the use of a current sensing resistor or the inductor's DCR, allows for flexibility in circuit design. The pulse code modulated signal output (DI) serves as a vital feedback mechanism, enabling the system to adjust its operation based on the real-time inductor current.

To obtain an analog voltage that correlates with power consumption, the circuit designer can connect the VK pin to the VO pin. This connection facilitates the generation of an analog signal that reflects the power being processed by the converter. The addition of an RC filter to the DI output smooths the pulse code modulation signal, resulting in a stable analog voltage that can be utilized for further processing or monitoring.

The TruePower technology integrated into the IR3721 is particularly beneficial for applications involving microprocessors, which often experience rapid changes in power demand. This technology ensures that the power monitoring remains accurate even under dynamic load conditions, thus providing reliable performance in high-speed computing environments.

Overall, the IR3721 represents a significant advancement in power monitoring for DC-DC converters, offering features that enhance the efficiency and reliability of power management in electronic circuits. Its design accommodates various configurations, making it suitable for a wide range of applications, from consumer electronics to industrial systems.The IR3721 is a versatile power or current monitor IC for low-voltage DC-DC Converters The IR3721 monitors the inductor current in buck or multiphase converters using either a current sensing resistor or the inductors winding resistance (DCR). The output (DI) is a pulse code modulated signal whose duty ratio is proportional to the inductor current

. An Analog voltage that is proportional to power is realized by connecting VK to VO and connecting an RC Filter to DI. TM The IR3721 uses Patent Pending TruePower technology to accurately capture highly dynamic power waveforms typical of Microprocessor loads.

By International Rectifier Corp. 🔗 External reference