PMC (PCI Mezzanine Card) drive circuit

Abstract

The invention discloses a PMC (PCI Mezzanine Card) drive circuit, which comprises a power battery pack, an MOS (Metal Oxide Semiconductor), a main control detecting circuit, a logic circuit and a negative pole output interface, wherein the power battery pack is directly connected with the main control detecting circuit and outputs as well as is provided with an LDO (Low Dropout Regulator) and the input end of an overcurrent short-circuit detecting circuit is connected with the power battery pack, the logic circuit is respectively connected with the LDO, the overcurrent short circuit detecting circuit and the output end of the main control detecting circuit, the output end of the logic circuit is directly connected with the MOS and outputs through the negative pole output interface. The PMC drive circuit is used for solving the phenomenon of burn out of short circuiting of multiple strings of power protection circuits and ensuring that a lithium battery and a lithium battery pack are not damaged under various use conditions. During overcurrent and short-circuiting, circuit control speed is increased and circuit drive capacity is increased from 5 times to 10 times. The PMC drive circuit is suitable for all power battery protection circuits, has a wide application range, and ensures that circuit parameters are set flexibly because various parameters are freely regulated.

Description

technical field [0001] The invention relates to the technical field of integrated circuits, in particular to a PMC drive circuit. Background technique [0002] The protection circuit of traditional lithium batteries and lithium battery packs usually uses the main control circuit to implement protection in the form of an overcurrent circuit, but the overcurrent circuit part is not separated separately, but one of the main control circuit units is used to realize overcurrent and short circuit. detection. The MOS is directly controlled by the main control detection circuit. Since the output drive current of the main control detection circuit is relatively small, it is difficult to drive more MOSs on the current power protection board. In short circuit or overcurrent, the circuit cannot be shut down, resulting in poor circuit control. Flexible, easily damaged or burned. Contents of the invention [0003] Aiming at the defects of the existing traditional technology, the prese...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the defects of the existing traditional technology, the present invention provides a PMC drive circuit, which is used to solve the phenomenon of short-circuit burning of multiple strings of power protection circuits, and to ensure that lithium batteries and lithium battery packs are not damaged under various usage conditions

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