Integrated Battery Voltage Sensor with High Voltage Isolation, a Battery Voltage Sensing System and Methods Therefor
First Claim
1. A battery sensor comprising:
- a voltage sensor configured to sample a voltage of a battery; and
a buffer in electrical communication with the voltage sensor and configured for scaling the sampled battery voltage and outputting a voltage signal proportional to the sampled battery voltage;
wherein the voltage sensor is further configured for isolating the buffer from the battery.
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Accused Products
Abstract
An integrated circuit battery sensor and system thereof are provided. The battery sensor includes a voltage sensor configured to sample a voyage of a battery and a buffer in electrical communication with the voltage sensor and configured for scaling the sampled battery voltage and outputting a voltage signal proportional to the sampled battery voltage; wherein the voltage sensor is further configured for isolating the buffer from the battery. The voltage sensor includes a first capacitor coupled to a positive potential terminal of the battery and a second capacitor coupled to a negative potential terminal of the battery. The battery sensor includes a first die including a first and second input terminal configured for coupling to the positive and negative potential terminals of the battery; and a second die including the voltage sensor, wherein the first and second die are electrically isolated from each other.
35 Citations
34 Claims
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1. A battery sensor comprising:
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a voltage sensor configured to sample a voltage of a battery; and a buffer in electrical communication with the voltage sensor and configured for scaling the sampled battery voltage and outputting a voltage signal proportional to the sampled battery voltage; wherein the voltage sensor is further configured for isolating the buffer from the battery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An integrated circuit for sensing a voltage of a battery comprising:
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a first die including a first input terminal configured for coupling to a positive potential terminal of the battery and a second input terminal configured for coupling to a negative potential terminal of the battery; and a second die including a voltage sensor configured to sample a voltage of the battery, the voltage sensor being in electrical communication with the first and second input terminals, wherein the first and second die are electrically isolated from each other. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A system for sensing a battery comprising:
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a battery including at least one cell having a first positive potential terminal and a second negative potential terminal; at least one battery sensor coupled to the first and second terminals of the at least one cell, the at least one battery sensor includes a single terminal for outputting a voltage representative of a voltage sampled across the first and second terminals; an analog-to-digital converter coupled to the single terminal of the at least one battery sensor configured for outputting a digital representation of the sampled voltage; and a controller configured to receive the digital representation of the sampled voltage and for generating an enable signal for controlling a sample and hold function of the at least one battery sensor. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34)
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Specification