Title:
CHARGE/DISCHARGE CONTROL CIRCUIT AND CHARGING TYPE POWER SUPPLY DEVICE
Document Type and Number:
Japanese Patent JP2011072177
Kind Code:
A
Abstract:
To provide a charge/discharge control circuit and a charging type power supply device which include an intermediate terminal disconnection detection circuit having low current consumption.
In the charge/discharge control circuit, a constant current circuit serving as an intermediate terminal disconnection detection circuit is provided to a terminal to which secondary batteries are connected, and includes a depletion type metal oxide semiconductor (MOS) transistor and a resistor connected between a gate terminal and a source terminal of the depletion type MOS transistor.
Inventors:
SANO KAZUSUKE
SAKAMOTO WATARU
SAKAMOTO WATARU
Application Number:
JP2010151543A
Publication Date:
April 07, 2011
Filing Date:
July 02, 2010
Export Citation:
Assignee:
SEIKO INSTR INC
International Classes:
H02J7/00; H01M2/10; H01M10/44; H02J7/02
Domestic Patent References:
| JPH08308115A | 1996-11-22 | |||
| JPS63202231A | 1988-08-22 | |||
| JPH08308115A | 1996-11-22 | |||
| JPS63202231A | 1988-08-22 |
Attorney, Agent or Firm:
Kentaro Kuhara
Noriaki Uchino
Nobuyuki Kimura
Noriaki Uchino
Nobuyuki Kimura