Double chip power protector and battery-powered electronic product production circuit
A two-chip, protector technology, applied in emergency protection circuit devices, output power conversion devices, DC power input conversion to DC power output and other directions, can solve the problem of high cost, achieve low cost, low loss and simple application. Effect
Active Publication Date: 2015-09-02
SHANGHAI CHANGYUAN WAYON CIRCUIT PROTECTION CO LTD
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Problems solved by technology
The advantage of this integrated solution is that the peripheral circuit is simple, and the precise control of current and temperature can be realized; the disadvantage is that the control part and the power part share the semiconductor process, and when used in high voltage and high current applications, the cost is high
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[0035] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0036] The invention provides a double-chip power protector.
[0037] refer to image 3 , image 3 It is a schematic diagram of the module structure of an embodiment of the double-chip power protector of the present invention.
[0038] In this embodiment, the dual-chip power protector includes a voltage input terminal VIN, a voltage output terminal VOUT, a power switch chip 101 and a control circuit chip 102 .
[0039] Wherein, the control circuit chip 102 is configured to output a corresponding driving signal to the power switch chip Q1 according to the voltage of the voltage input terminal VIN, the current flowing through the power switch chip Q1, and the temperature of the control circuit chip 102. The control terminal of the switch chip 101 is used to control the switching action of the control circuit chip 101...
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The invention discloses a double chip power protector, comprising a voltage input end, a voltage output end, a power switch chip and a control circuit chip. The control circuit chip is used for outputting corresponding driving signals to a control end of the power switch chip according to voltage of the voltage input end, current flowing through the power switch chip and temperature of the control circuit chip, in order to control the on-off action of the control circuit chip and to achieve overvoltage, undervoltage, overtemperature and overcurrent protection control of the power switch chip. The power switch chip is used for carrying out connection and disconnection between the voltage input end and the voltage output end according to the driving signals output by the control circuit chip. The double chip power protector provided by the invention is advantaged by simple application, low cost and low loss.
Description
technical field [0001] The invention relates to the technical field of electronic fuse chips, in particular to a double-chip power protector and a battery-powered electronic product protection circuit. Background technique [0002] Fuses are widely used in protection circuits of automotive electronics and consumer electronics. The traditional electronic fuse fuses to protect the output when it is over-current. or overvoltage and other abnormal conditions, in order to achieve the purpose of protecting the output; and, it can be used as a control current source to realize hot swap and slow start between the input and output; at the same time, the electronic fuse circuit realizes The protection function can be restored automatically afterwards, which can avoid manual maintenance, and its cost is also low. [0003] Discrete hot-swappable control chip / electronic fuse technology is widely used in the protection circuit of electronic products. refer to figure 1 , figure 1 It i...
Claims
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IPC IPC(8): H02M3/156H02H7/10
Inventor 欧雪春顾怡峰陈伟李学宁
Owner SHANGHAI CHANGYUAN WAYON CIRCUIT PROTECTION CO LTD