Power supplying method and apparatus and a system using the same
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G06F-001/00
H02H-003/00
출원번호
US-0125487
(2005-05-10)
등록번호
US-7401237
(2008-07-15)
우선권정보
JP-2004-141206(2004-05-11)
발명자
/ 주소
Hara,Kentaroh
출원인 / 주소
Ricoh Company, Ltd.
대리인 / 주소
Cooper & Dunham, LLP
인용정보
피인용 횟수 :
3인용 특허 :
17
초록▼
An apparatus includes at least one load, a control circuit, and a power supplying apparatus including a control-use power supply part, at least one load-use-power supply part, and a power supply control part. The control-use power supply part supplies first electric power to the control circuit, an
An apparatus includes at least one load, a control circuit, and a power supplying apparatus including a control-use power supply part, at least one load-use-power supply part, and a power supply control part. The control-use power supply part supplies first electric power to the control circuit, and stops supplying the first electric power and outputs a first detection signal when detecting a first abnormal operation state. The at least one load-use power supply part supplies second electric power to the respective at least one load, and stops supplying the second electric power and outputs a second detection signal when detecting a second abnormal operation state. The power supply control part causes the control-use power supply part to stop supplying the first electric power according to the first detection signal, and causes the at least one load-use power supply part to stop supplying the second electric power according to the second detection signal.
대표청구항▼
What is claimed is: 1. A system comprising: at least one load configured to perform a predetermined function; a control circuit configured to control an operation of the at least one load; and a power supplying apparatus comprising: a control-use power supply part configured to supply first electri
What is claimed is: 1. A system comprising: at least one load configured to perform a predetermined function; a control circuit configured to control an operation of the at least one load; and a power supplying apparatus comprising: a control-use power supply part configured to supply first electric power to the control circuit, to detect a first abnormal operation state, and to stop supplying the first electric power and to output a first abnormality detection signal upon detection of the first abnormal operation state; at least one load-use power supply part configured to supply second electric power to the respective at least one load, to detect a second abnormal operation state, and to stop supplying the second electric power and to output a second abnormality detection signal upon detection of the second abnormal operation state; and a power supply control part configured to cause the control-use power supply part to enter a sleep mode a predetermined first period of time after receipt of the first abnormality detection signal, and to cause the at least one load-use power supply part to stop supplying the second electric power upon receipt of the second abnormality detection signal. 2. A system comprising: at least one load configured to perform a predetermined function; a control circuit configured to control an operation of the at least one load; and a power supplying apparatus comprising: a control-use power supply part configured to supply first electric power to the control circuit, to detect a first abnormal operation state, and to stop supplying the first electric power and to output a first abnormality detection signal upon detection of the first abnormal operation state; at least one load-use power supply part configured to supply second electric power to the respective at least one load, to detect a second abnormal operation state, and to stop supplying the second electric power and to output a second abnormality detection signal upon detection of the second abnormal operation state; and a power supply control part configured to cause the at least one load-use power supply part to stop supplying the second electric power to the respective at least one load and to cause the control-use power supply part to enter into a sleep mode upon receipt of the first abnormality detection signal, and to cause one of the at least one load-use power supply part to enter into a sleep mode upon receipt of the second abnormality detection signal. 3. The system as described in claim 2, wherein the control-use power supply part outputs the first abnormality detection signal when continuously detecting the first abnormal operation state for at least a first predetermined time, and the at least one load-use power supply part outputs the second abnormality detection signal when continuously detecting the second abnormal operation state for at least the first predetermined time. 4. The system as described in claim 2, wherein the power supply control part causes the control-use power supply part to resume supplying the first electric power upon elapse of a second predetermined time after receipt of the first abnormality detection signal, and the power supply control part causes the at least one load-use power supply part to resume supplying the second electric power upon elapse of the second predetermined time after receipt of the second abnormality detection signal. 5. The system as described in claim 2, wherein the first abnormal operation state is an overcurrent state in which a first output current output from the control-use power supply part exceeds a first predetermined value, and the second abnormal operation state is another overcurrent state in which a second output current output from the at least one load-use power supply part exceeds a second predetermined value. 6. The system as described in claim 2, wherein each of the control-use power supply part and the at least one load-use power supply part includes a switching regulator. 7. The system as described in claim 2, wherein at least one of the at least one load includes an output power amplifier. 8. The system as described in claim 7, further comprising: a bias voltage generation part configured to supply a predetermined bias voltage to the output power amplifier, wherein the power supply control part stops an operation of the bias voltage generation part upon receipt of the second abnormality detection signal output from the at least one load-use power supply part which supplies third electric power to the output power amplifier. 9. The system as described in claim 8, wherein the control-use power supply part, the at least one load-use power supply part, the power supply control part, and the bias voltage generation part are integrated into a semiconductor device of a single chip. 10. A system comprising: at least one load means for performing a predetermined function; control means for controlling an operation of the at least one load means; and power supplying means comprising: control-use power supply means for supplying first electric power to the control means, to detect a first abnormal operation state, and to stop supplying the first electric power and to output a first abnormality detection signal upon detection of the first abnormal operation state; at least one load-use power supply means for supplying second electric power to the respective at least one load means, to detect a second abnormal operation state, and to stop supplying the second electric power and to output a second abnormality detection signal upon detection of the second abnormal operation state; and power supply control means for causing the at least one load-use power supply means to stop supplying the second electric power to the respective at least one land means and to cause the control-use power supply means to enter into a sleep mode upon receipt of the first abnormality detection signal, and in cause one of the at least one load-use power supply means to enter into a sleep mode upon receipt of the second abnormality detection signal. 11. The system as described in claim 10, wherein the control-use power supply means outputs the first abnormality detection signal when continuously detecting the first abnormal operation state for at least a first predetermined time, and the at least one load-use power supply means outputs the second abnormality detection signal when continuously detecting the second abnormal operation state for at least the first predetermined time. 12. The system as described in claim 10, wherein the power supply control means causes the control-use power supply means to resume supplying the first electric power upon elapse of a second predetermined time after receipt of the first abnormality detection signal, and the power supply control means causes the at least one load-use power supply means to resume supplying the second electric power upon elapse of the second predetermined time after receipt of the second abnormality detection signal. 13. The system as described in claim 10, wherein the first abnormal operation stare is an overcurrent state in which a first output current output from the control-use power supply means exceeds a first predetermined value, and the second abnormal operation stare is another overcurrent state in which a second output current output from the at least one load-use power supply means exceeds a second predetermined value. 14. The system as described in claim 10, wherein each of the control-use power supply means and the at least one load-use power supply means includes a switching regulator. 15. The system as described in claim 10, wherein at least one of the at least one load means includes an output power amplifier. 16. The system as described in claim 15, further comprising: bias voltage generation means for supplying a predetermined bias voltage to the output power amplifier, wherein the power supply control means stops an operation of the bias voltage generation means upon receipt of the second abnormality detection signal output from the at least one load-use power supply means which supplies third electric power to the output power amplifier. 17. The system as described in claim 16, wherein the control-use power supply means, the at least one load-use power supply means, the power supply control means, and the bias voltage generation means are integrated into a semiconductor device of a single chip. 18. A power supplying method for supplying a plurality of electric powers to respective function blocks, the power supplying method comprising; providing at least one load configured to perform a predetermined function, a control circuit configured to control an operation of the at least one load, and a power supplying apparatus; providing the power supplying apparatus with a control-use power supply part, at least one load-use power supply part, and a power supply control part; causing the control-use power supply part to supply first electric power to the control circuit; causing the control-use power supply part to detect a first abnormal operation state; causing the control-use power supply part to stop supplying the first electric power and to output a first abnormality detection signal upon detection of the first abnormal operation state; causing the at least one load-use power supply part to supply second electric power to the respective at least one load; causing the at least one load-use power supply part to detect a second abnormal operation state; causing the at least one load-use power supply part to stop supplying the second electric power and to output a second abnormality detection signal upon detection of the second abnormal operation state; causing the power supply control part to cause the at least one load-use power supply part to stop supplying the second electric power to die respective at least one load and to cause the control-use power supply part to enter into a sleep mode upon receipt of the first abnormality detection signal; and causing one of the at least one load-use power supply part to enter into a sleep mode upon receipt of the second abnormality detection signal. 19. The power supplying method as described in claim 18, further comprising causing the control-use power supply part to output the first abnormality detection signal when continuously detecting the first abnormal operation state for at least a first predetermined time; and causing the at least one load-use power supply part to output the second abnormality detection signal when continuously detecting the second abnormal operation stare for at least the first predetermined time. 20. The power supplying method as described in claim 18, further comprising: causing the power supply control part to cause the control-use power supply part to resume supplying the first electric power upon elapse of a second predetermined time after receipt of the first abnormality detection signal; and causing the power supply control part to cause the at least one load-use power supply part to resume supplying the second electric power upon elapse of the second predetermined time after receipt of the second abnormality detection signal. 21. The power supplying method as described in claim 18, wherein the first abnormal operation state is an overcurrent state in which a first output current output from the control-use power supply part exceeds a first predetermined value, and the second abnormal operation state is another overcurrent state in which a second output current output from the at least one load-use power supply part exceeds a second predetermined value. 22. The power supplying method as described in claim 18, further comprising including a switching regulator in each of the control-use power supply part and the at least one load-use power supply part. 23. The power supplying method as described in claim 18, further comprising including an output power amplifier in at least one of the at least one load. 24. The power supplying method as described in claim 23, further comprising: providing a bias voltage generation part configured to supply a predetermined bias voltage to the output power amplifier; and causing the power supply control part to stop an operation of the bias voltage generation part upon receipt of the second abnormality detection signal output from the at least one load-use power supply part which supplies third electric power to the output power amplifier. 25. The power supplying method as described in claim 24, further comprising integrating the control-use power supply part, the at least one load-use power supply part, the power supply control part, and the bias voltage generation part into a semiconductor device of a single chip. 26. A mobile phone comprising: at least one load configured to perform a predetermined function; a control circuit configured to control an operation of the at least one load; and a power supplying apparatus comprising: a control-use power supply part configured to supply first electric power to the control circuit, to detect a first abnormal operation state, and to stop supplying the first electric power and to output a first abnormality detection signal upon detection of the first abnormal operation state; at least one load-use power supply part configured to supply second electric power to the respective at least one load, to detect a second abnormal operation state, and to stop supplying the second electric power and to output a second abnormality detection signal upon detection of the second abnormal operation state; and a power supply control part configured to cause the at least one load-use power supply part to stop supplying the second electric power to the respective at least one load and to cause the control-use power supply part to enter into a sleep mode upon receipt of the first abnormality detection signal, and to cause one of the at least one load-use power supply part to enter into a sleep mode upon receipt of the second abnormality detection signal. 27. A power supplying apparatus for supplying electric power to at least one load performing a predetermined function and a control circuit controlling an operation of the at least one load, the power supplying apparatus comprising: a control-use power supply part configured to supply first electric power to the control circuit, to detect a first abnormal operation state, and to stop supplying the first electric power and to output a first abnormality detection signal upon detection of the first abnormal operation state; at least one load-use power supply part configured to supply second electric power to the respective at least one load, to detect a second abnormal operation state, and to stop supplying the second electric power and to output a second abnormality detection signal upon detection of the second abnormal operation state; and a power supply control part configured to cause the at least one load-use power supply part to stop supplying the second electric power to the respective at least one load and to cause the control-use power supply part to enter into a sleep mode upon receipt of the first abnormality detection signal, and to cause one of the at least one load-use power supply part to enter into a sleep mode upon receipt of the second abnormality detection signal.
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이 특허에 인용된 특허 (17)
Venditto ; Jr. Joseph G. (Perkasie PA) Detweiler James P. (Lansdale PA), Apparatus and method for protecting electronic circuitry from damage.
Silverstein Robert A. (Hudson MA) Taylor William A. (Bolton MA), Current mode switching power supply overload protection circuit with false fault condition screening.
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