Semiconductor Components Industries, LLC

Sanyo Electric Co., Ltd.

Mutsuki Niki

Yasuaki Hayashi

Hiroshi Saito

Keiji Amemiya

Kenichi Nakajima

Tsutomu Tanaka

Various embodiments of the present technology may provide methods and apparatus for a battery. The apparatus may enable/disable a protection circuit to prevent current leakage and discharging of the battery. The apparatus may comprise a control switch to enable/disable the protection circuit without an external power supply.

Methods and apparatus for a battery

A programmable battery protection system. Implementations may include a battery protection integrated circuit (IC) with an array of fuses, a plurality of latches coupled with the array of fuses, a plurality of MOSFETs coupled with the plurality of latches, and a plurality of resistors coupled in series and in parallel with each one of the plurality of MOSFETs. The IC may also include a comparator coupled with the plurality of resistors and with a battery control circuit. Whether any one of the array of fuses is open or closed (remains closed) may be set by a fuse trimming signal from the battery control circuit. A voltage supplied to the comparator by the plurality of resistors during operation may be one of a discharge overcurrent threshold voltage, a charge overcurrent threshold voltage, or a short current threshold voltage.

Programmable battery protection system and related methods

A programmable battery protection system. Implementations may include: a battery, only two field effect transistors (FETs) coupled with the battery, and a battery protection integrated circuit (IC) coupled with the FETs. The battery protection IC may include an array of fuses, a plurality of latches coupled with the array of fuses, and a comparator coupled with the plurality of latches. The array of fuses and the plurality of latches may be coupled with a fuse refresh circuit coupled with a trigger circuit where the fuse refresh circuit is configured to refresh the states of the plurality of latches using states of the array of fuses in response to receiving one of a power on signal and an operating trigger signal generated by the trigger circuit. The plurality of latches may be used to generate a threshold voltage that is provided to the comparator.

Automatically programmable battery protection system and related methods

A programmable battery protection system. Implementations may include: a battery and a battery protection integrated circuit (IC) coupled with the battery that includes a reference voltage circuit, a variable resistor circuit coupled with the reference voltage circuit, and only two field effect transistors (FETs) coupled with the overcurrent detection circuit and with the battery. The reference voltage circuit and the variable resistor circuit may be configured to cause a current sense signal of the system to vary substantially linearly with changes in a supply voltage of the system.

Battery protection system with reference voltage control system

A programmable battery protection system. Implementations may include: a battery, only two field effect transistors (FETs), and a battery protection integrated circuit (IC). The battery protection IC may include an array of fuses, first plurality of latches, second plurality of latches, and a comparator. The array of fuses, first plurality of latches, and second plurality of latches may be coupled with a fuse refresh circuit coupled with an analog trigger circuit and a logic trigger circuit. The fuse refresh circuit may be configured to refresh the states of the latches using states of the array of fuses in response to receiving an operating trigger signal generated by the analog trigger circuit or a logic trigger signal generated by the logic trigger circuit. The first plurality of latches may be used to generate a threshold voltage that is provided to the comparator.

In a VIF circuit for synchronously detecting a picture signal from an AM-modulated PIF signal, the accuracy of a picture signal to be demodulated is maintained even in a state of overmodulation. A comparator () determines whether the picture signal exceeds V, which is a state of overmodulation. In a period in which the signal is less than or equal to V, a switch circuit () inputs an output voltage of an APC filter () to a VCO (), and a PLL is formed. The PLL operates so as to lock onto the PIF signal, and reproduces a carrier wave. On the other hand, in a period in which the signal exceeds V, the switch circuit () inputs an output voltage Vof an SH circuit () to the VCO (). The SH circuit () holds the voltage of the APC filter () that is in a locked state in a horizontal synchronizing period and uses the voltage to control the VCO (), whereby free run and frequency drifting are minimized.

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Saitama, Japan

Mutsuki Niki