JPH06153391A - Power supply equipped with rising time control function - Google Patents

Abstract

PURPOSE:To provide a power supply equipped with a rising time control function for setting the rising time of output power supply arbitrarily. CONSTITUTION:A trigger input T1 is obtained from an output voltage V0 rising upon throw in of an input power supply 3 among a plurality of output power supplies 11, 12, 13. Upon elapse of time t1, output voltage V1 from the output power supply 11 is raised and a trigger input T2 is obtained. Upon elapse of time t2, output voltage V2 from the output power supply 12 is raised and a trigger input T3 is obtained. Upon elapse of time t3, the output power supply 13 is raised.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply device with a rise time control function, and is particularly useful when applied to an output power supply that supplies the power necessary for operating the equipment based on the power supplied from the input power supply. .

[0002]

2. Description of the Related Art A power supply device according to the related art, which is an output power supply for supplying electric power required for operation of equipment based on electric power supplied from an input power supply, is characterized by the characteristics of the power supply device itself after the input power supply is turned on. Has a fixed rise time.

FIG. 4 is a block diagram showing a power supply device of an electronic device which requires multiple power supplies according to the prior art. As shown in the figure, this power supply device I has two output power sources 1 and 2.
And is configured to supply the power necessary for operating the electronic device 4 based on the power supplied from the input power supply 3.

In the power supply device I, the logic system power supply of the electronic device 4 is first started up, the electronic device 4 is initialized, and then the power supply for the external output signal is started up.
It is necessary to prevent the operation of the electronic device 4 at the start-up from becoming unstable and prevent an unnecessary output signal from being output.

Therefore, in the prior art, for example, a switch 5 is interposed between the output power source 2 and the electronic device 4,
This switch 5 is configured to be controlled by the electronic device 4 via the control unit 6.

[0006]

In the above prior art, when the rise time of the output power supply 2 is controlled, by providing the switch 5 and the control unit 6 for the switch 5 outside the power supply device I, the required time and output power supply are controlled. The output of 2 is cut off. For this reason, the entire system becomes complicated and large-sized, and it is necessary to design the control unit 6 according to each electronic device 4.

SUMMARY OF THE INVENTION In view of the above-mentioned conventional technique, it is an object of the present invention to provide a power supply device with a rise time control function capable of arbitrarily setting the time until the output power supply rises.

[0008]

The structure of the present invention which achieves the above object is to provide a power supply device having a plurality of output power supplies for supplying the power necessary for the operation of the equipment based on the power supplied from the input power supply. And a regulator for adjusting the time from the supply of the trigger input for starting the output power supply to the rise of each output power supply.

[0009]

According to the present invention having the above-described structure, the output power supply is delayed with a delay from the time when the input power is turned on until the trigger input is supplied to the trigger input terminal and the time after the trigger input set by the regulator. Can be set up.

[0010]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1A is a block diagram showing a first embodiment of the present invention. The power supply device II according to the present invention corresponds to an input power supply and a three-channel output power supply.

As shown in the figure, the input power source 3 is connected to the output power sources 11, 12, and 13 of each channel, and its output voltage V ₀ is used as the trigger input T ₁ of the output power source 11. The output power source 11 is the regulator 14 after the input power source 3 is turned on.
Output voltage V after a delay of time t ₁ set by
₁ is configured to rise. The output power supply 12 is configured so that its output voltage V ₂ rises with a delay of a time t ₂ set by the regulator 15 using the rising of the output voltage V ₁ of the output power supply 11 as a trigger input T ₂ . The output power source 13 receives the output voltage V ₂ of the output power source 12 as a trigger input T ₃
The output voltage V ₃ rises after a delay of time t ₃ set by the regulator 16.

Thus, the output voltages V ₀ , V ₁ ,
V ₂ and V ₃ sequentially rise at the timing shown in FIG.

FIG. 2 shows the trigger inputs T _{1 to} T ₃ and the regulator 1.
It is a circuit diagram which shows the specific structural example which controls the rise time of the output power supplies 11-13 by 4-16. As shown in the figure, in this example, when the input power supply 3 is turned on, the output power supply 11
The output power supplies 11 to 13 are turned on in the insides of 13 to 13, and the outputs from the output power supplies 11 to 13 are cut off by the switch means. That is, the delay time t is used for the trigger inputs T _{1 to} T ₃ by using the time constant of the CR circuit including the variable resistor R and the capacitor C provided as the adjusters 14 to 16.
_{1 to} t ₃ are made, the photo coupler PC and the transistor T
_Turn on the switch means consisting of _r . Here, by adjusting the resistance value of the variable resistor R, the delay times t _{1 to} t
₃ can be set arbitrarily.

In the first embodiment, the input power source 3
The trigger input T ₁ is obtained at the output voltage V ₀ which rises at the same time when the power is turned on, and the output power supply 11 rises after the lapse of time t ₁ . Similarly, a trigger input T ₂ is obtained by the output voltage V ₁ of the output power supply 11, the output power supply 12 rises after a lapse of time t _{2, and} a trigger input T ₃ is obtained by the output voltage V ₂ of the output power supply 12. Then, the output power supply 13 starts up after the lapse of time t ₃ .

FIG. 3A is a block diagram showing a second embodiment of the present invention. The power supply device III according to this embodiment is also
Similar to the above-described embodiment, the three-channel output power supply corresponds to the input power supply.

As shown in the figure, in this embodiment, the input power supply 3 is connected to the output power supplies 11, 12 and 13 of the respective channels as in the previous embodiment, but the output voltage V ₀ thereof is
As a common trigger input T ₄ of the output power supplies 11 to 13, and adjusters 14, 15, 1 of the output power supplies 11 to 13 respectively.
At time t ₄ until the output voltages V ₁ , V ₂ and V ₃ rise at ₆ ,
It is configured to adjust t ₅ and t ₆ .

In the second embodiment, as shown in FIG.
As shown in, a trigger input T ₄ is obtained by the output voltage V ₀ rising at the same time when the input power supply 3 is turned on, and each output power supply 11
After the time t _{4 to} t ₆ specific to
Output voltage V ₁ ~V ₃ of to 13 will rise sequentially stand.

According to the present invention, the rise time of each output power supply can be freely set regardless of the number of channels of the output depending on the selection of the trigger input of each channel and the setting time of the adjuster. Needless to say, the input power supply 3 does not have to be one channel, and separate output power supplies may be connected to the output power supplies 11 to 13, respectively.
Furthermore, even if a power supply device with one input and one output is combined, a power supply device with one input and multiple outputs having the function related to the present invention for each output channel can be realized.

[0020]

As described above in detail with reference to the embodiments, according to the present invention, the timing for starting the output power supply can be freely set. That is, the rise of the output power supply can be controlled by the power supply device itself, and it is possible to achieve simplification and miniaturization of the entire system without providing a control means outside the power supply device.

[Brief description of drawings]

FIG. 1 is a block diagram showing a first embodiment of the present invention and waveform diagrams of respective parts thereof.

FIG. 2 is a circuit diagram showing details of an output power supply and a regulator of the above embodiment.

FIG. 3 is a block diagram showing a second embodiment of the present invention and waveform diagrams of respective parts thereof.

FIG. 4 is a block diagram showing a conventional technique.

[Explanation of symbols]

3 Input power supply 11, 12, 13 Output power supply 14, 15, 16 Regulator T ₁ , T ₂ , T ₃ , T ₄ Trigger input

Claims (1)

[Claims] 1. A power supply device having a plurality of output power supplies for supplying electric power necessary for operating the equipment based on the electric power supplied from the input power supply, from supply of a trigger input for starting each output power supply to each output power supply. A power supply device with a rise time control function, comprising: a regulator that adjusts the time until the rise of the vehicle.