| 摘要 |
A cell protection system includes a charge control MOSFET 21, a charge current detection MOSFET 23, a discharge control MOSFET 20, a discharge current detection MOSFET 22, a charge current detection resistance 19, a discharge current detection resistance 16 and a control circuit. The MOSFET 23 has a drain and a gate common with the MOSFET 21. The MOSFET 20 has a drain common with the MOSFET 21. The MOSFET 22 has a drain and a gate common with the MOSFET 20. The resistances 19 and 16 are provided in correspondence to the MOSFETs 23 and 22, respectively. The control circuit generates a gate control signal for the MOSFETs 21 and 23 by using the resistance 19 and generates a gate control signal for the MOSFETs 20 and 22 by using the resistance 16. |
