Comprehensive and precise monitoring! Dajiqun releases three channel, high-precision digital voltage and current monitoring chip TPA6290
TPA6290 product advantages
1.Wide voltage monitoring range
TPA6290 supports a wide common mode voltage range of 0V~36V, which can adapt to various power environments and ensure stable operation of the device under various conditions.
2. Flexible current and voltage measurement
TPA6290 is capable of monitoring three independent current and voltage channels, making it suitable for comprehensive monitoring of multi power systems, meeting complex application requirements, and reducing system costs. Support programmable conversion time and average calculation mode, which can be flexibly configured according to requirements to optimize system performance.
3. I2C and SMBus compatible interfaces
TPA6290 supports four programmable addresses, facilitating parallel use of multiple devices and enhancing system flexibility. Supports dual rate configuration of fast mode (1kHz-400kHz) and high-speed mode (1kHz-2.44MHz), which can adapt to various communication rate requirements. Integrate SMBus alarm response mechanism and timeout function, and implement response function to I ² C global reset instruction, effectively improving system reliability, compatibility, and protocol expansion capability.
4. Comprehensive alarm and monitoring functions
Support timing control (TC) alarm function, which can be used to verify the correctness of power timing and ensure the sequence and stability of system startup. Provide current, voltage, and power data for each channel for real-time monitoring and analysis. Supporting three individually configurable warning/critical alarm thresholds, the system can set alarm conditions according to specific needs, such as overcurrent, undervoltage, etc., to improve safety and reliability.
TPA6290 Product Features
• Number of channels
3-CH
• Wide dynamic range
• Power supply range: 2.7V~5.5V
• Voltage monitoring range: 0V~36V, fixed 8mV LSB (Least Significant Bit, the smallest analog voltage change that can be resolved
• by the analog-to-digital converter)
• Differential voltage input range: -163.84mV~+163.8mV, fixed 40uV LSB
• High precision
• ± 5uV (Typ) Shunt offset voltage, 0.1uV/℃ drift (Shunt offset test distribution refers to Figure 1, mean Shunt offset voltage is 1uV,
• typical Vos temperature drift is 0.1uV/℃, refer to Figure 2)
• ± 2mV (Typ) Bus offset voltage, 20uV/℃ drift
• 0.05% (Typ) gain error
• 13 bit ADC resolution
• I2C and SMBus compatible interfaces
• Flexible and independent configuration of bus voltage and shunt voltage conversion time
• Built in programmable threshold alarm function, triggering warning for abnormal current or power
• Encapsulation
• QFN4X4-16
• Wide working temperature range
• -40℃ to +125℃
Typical applications of TPA6290
TPA6290 can accurately monitor multiple power systems. The flexible current and voltage monitoring, as well as comprehensive alarm and monitoring functions, make TPA6290 widely applicable in various fields. Please refer to Figure 3 for a typical application schematic.
