Switch driver, battery management system, and battery pack

A battery management system comprising:

• a main switch configured to allow or block power supply to a load;
• a main driver including a driving switch configured to drive the main switch;
• a sub-driver configured to apply a driving signal to the main driver through a plurality of switches to drive the driving switch of the main driver;
• and
• a processor configured to control an operation of the sub-driver by respectively applying an enable signal and a disable signal to a first switch and a second switch among the plurality of switches included in the sub-driver, wherein the enable signal is a signal for an operation of turning on the driving switch, and the disable signal is a signal for an operation of turning off the driving switch,
• wherein the sub-driver operates as a latch circuit configured to maintain a current state of the driving signal when a predefined latch condition is satisfied according to a state of the enable signal and a state of the disable signal.

A battery pack comprising:

• a main switch configured to allow or block an electrical connection between a first battery and a load;
• a main driver including a driving switch configured to drive the main switch by being turned on or off according to whether an electrical connection is made with the second battery;
• a sub-driver configured to apply a driving signal to the main driver through a plurality of switches to drive the driving switch of the main driver;
• and
• a processor configured to control an operation of the sub-driver by respectively applying an enable signal and a disable signal to a first switch and a second switch among the plurality of switches included in the sub-driver, wherein the enable signal is a signal for an operation of turning on the driving switch, and the disable signal is a signal for an operation of turning off the driving switch,
• wherein the sub-driver is configured to drive the driving switch by prioritizing the disable signal when the enable signal and the disable signal are at a mutually incompatible state.