Fig. 1.
Leapfrog sampling and converting structure[7].
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| Citation: |
Qidong Zhang, Yintang Yang, Changchun Chai. 60 V tolerance full symmetrical switch for battery monitor IC[J]. Journal of Semiconductors, 2017, 38(6): 065002. doi: 10.1088/1674-4926/38/6/065002
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Q D Zhang, Y T Yang, C C Chai. 60 V tolerance full symmetrical switch for battery monitor IC[J]. J. Semicond., 2017, 38(6): 065002. doi: 10.1088/1674-4926/38/6/065002.
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60 V tolerance full symmetrical switch for battery monitor IC
DOI: 10.1088/1674-4926/38/6/065002
More Information
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Abstract
For stacked battery monitoring IC high speed and high precision voltage acquisition requirements, this paper introduces a kind of symmetrical type high voltage switch circuit. This kind of switch circuit uses the voltage following structure, which eliminates the leakage path of input signals. At the same time, this circuit adopts a high speed charge pump structure, in any case the input signal voltage is higher than the supply voltage, it can fast and accurately turn on high voltage MOS devices, and convert the battery voltage to an analog to digital converter. The proposed high voltage full symmetry switch has been implemented in a 0.18μm BCD process; simulated and measured results show that the proposed switch can always work properly regardless of the polarity of the voltage difference between the input signal ports and an input signal higher than the power supply.-
Keywords:
- BMS,
- BMI,
- symmetry,
- switch,
- high voltage
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References
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