CN-224231833-U - Narrow pulse current source and testing arrangement

CN224231833UCN 224231833 UCN224231833 UCN 224231833UCN-224231833-U

Abstract

The utility model discloses a narrow pulse current source and a testing device. The power supply comprises a switch power supply module, a first voltage reducing module, a second voltage reducing module, a first voltage stabilizing module, a pulse signal generating module and a signal regulating module, wherein the output end of the switch power supply module is electrically connected with the power end of the signal regulating module through the first voltage reducing module and the first voltage stabilizing module, the output end of the switch power supply module is electrically connected with the input end of the pulse signal generating module through the first voltage reducing module and the second voltage stabilizing module, the output end of the pulse signal generating module is electrically connected with the input end of the signal regulating module, the output end of the signal regulating module is electrically connected with a load to be tested, the output end of the switch power supply module is also electrically connected with the voltage regulating end of the signal regulating module through the second voltage reducing module, the allowable minimum pulse width of the signal regulating module is a preset pulse width, and the voltage value of the voltage regulating end of the signal regulating module is larger than the highest voltage of the input end of the signal regulating module.

Inventors

YANG XU
LIN MUNAN
HUANG WEILING
ZENG LEI
QI XIN
YANG RENJUN

Assignees

散裂中子源科学中心
中国科学院高能物理研究所

Dates

Publication Date: 20260512
Application Date: 20250429

Claims (10)

1. The narrow pulse current source is characterized by comprising a switching power supply module, a first voltage reduction module, a second voltage reduction module, a first voltage stabilization module, a second voltage stabilization module, a pulse signal generation module and a signal regulation module; The output end of the switching power supply module is electrically connected with the input end of the first voltage stabilizing module through the first voltage reducing module; the output end of the first voltage stabilizing module is electrically connected with the power end of the signal adjusting module; The output end of the switching power supply module is also electrically connected with the input end of the second voltage stabilizing module through the first voltage reducing module, the output end of the second voltage stabilizing module is electrically connected with the input end of the pulse signal generating module, the output end of the pulse signal generating module is electrically connected with the input end of the signal regulating module, the output end of the signal regulating module is electrically connected with a load to be tested, and the output end of the switching power supply module is also electrically connected with the voltage regulating end of the signal regulating module through the second voltage reducing module; The voltage value of the voltage regulating end of the signal regulating module is larger than the highest voltage of the input end of the signal regulating module.
2. The narrow pulse current source of claim 1, wherein the signal conditioning module comprises an isolated drive unit and a power conditioning output unit; The power end of the isolation driving unit is used as the power end of the signal adjusting module and is electrically connected with the output end of the first voltage stabilizing module; The input end of the isolation driving unit is used as the input end of the signal adjusting module and is electrically connected with the output end of the pulse signal generating module; The output end of the second voltage reduction module is electrically connected with the voltage regulation end of the power regulation output unit, and the voltage regulation end of the power regulation output unit is used as the voltage regulation end of the signal regulation module; the output end of the power regulation output unit is electrically connected with a load to be tested; The voltage value of the voltage regulating end of the power regulating output unit is larger than the highest voltage of the input end of the power regulating output unit.
3. The narrow pulse current source according to claim 2, wherein the isolation driving unit comprises an isolation driving chip, wherein an input voltage source of the isolation driving chip is electrically connected with an output end of the first voltage stabilizing module; the first input end of the isolation driving chip is electrically connected with the output end of the pulse signal generating module; the second input end of the isolation driving chip is grounded; The output voltage source of the isolation driving chip is electrically connected with the second voltage reduction module; and the output end of the isolation driving chip is electrically connected with the input end of the power regulation output unit.
4. The narrow pulse current source of claim 3 wherein the power regulated output unit comprises a push-pull circuit comprising a first transistor and a second transistor; the control end of the first triode is connected with the control end of the second triode and is electrically connected with the output end of the isolation driving chip; The second end of the first triode is electrically connected with the first end of the second triode and is electrically connected with a load to be tested, and the second end of the second triode is grounded.
5. The narrow pulse current source of claim 4, wherein the push-pull circuit further comprises a first resistor, a zener diode, and a second resistor; The first end of the first resistor is electrically connected with the second end of the first triode, the second end of the first resistor is electrically connected with the load to be tested, the first end of the zener diode is electrically connected with the first end of the first resistor, the second end of the zener diode is electrically connected with the first end of the second resistor, and the second end of the second resistor is electrically connected with the second end of the first resistor; The second end of the second resistor is also electrically connected with the clamping end of the isolation driving chip.
6. The narrow pulse current source of claim 4, wherein the push-pull circuit further comprises a first capacitor, a second capacitor and a third capacitor; The first end of the first capacitor is electrically connected with the first end of the first triode, the second end of the first capacitor is electrically connected with the second end of the second triode and grounded, the first end of the second capacitor is electrically connected with the first voltage dropping module, the second end of the second capacitor is grounded, the first end of the third capacitor is electrically connected with the first voltage dropping module, and the second end of the third capacitor is grounded.
7. The narrow pulse current source according to claim 4, wherein the isolation driving unit further comprises a third resistor and a fourth capacitor, wherein the first input end of the isolation driving chip is further electrically connected with the output end of the pulse signal generating module through the third resistor; The input voltage source of the isolation driving chip is electrically connected with the first end of the fourth capacitor, and the second end of the fourth capacitor is grounded.
8. The narrow pulse current source of claim 1, further comprising a pulse adjustable module, wherein the pulse adjustable module is coupled to the pulse signal generation module.
9. The narrow pulse current source according to claim 3, wherein the model of the isolation driving chip comprises BM61S41RFV-C.
10. A test device comprising a narrow pulse current source as claimed in any one of claims 1 to 9 and a load to be tested.

Description

Narrow pulse current source and testing arrangement Technical Field The embodiment of the utility model relates to the technical field of current sources, in particular to a narrow pulse current source and a testing device. Background The narrow pulse current source is a circuit capable of outputting high-precision and rapid rising/falling transient current pulses (the pulse width is usually in the nanosecond to microsecond level), and has the core characteristics of narrow time width, high amplitude precision and rapid dynamic response of the current pulses, and is widely applied to scenes needing precise transient current driving. Such as biomedical applications in the laser and optoelectronics fields. In the prior art, the pulse width of the narrow pulse current source is larger than the pulse width difference of the theoretical universal application of various load test requirements, and the amplitude of the narrow pulse current source cannot reach the amplitude of the theoretical universal application of various load test requirements, so that the narrow pulse current source has low test precision, small selectivity and cannot reach the load test requirements. Disclosure of utility model The utility model provides a narrow pulse current source and a testing device, which are used for realizing high-precision testing of each load and realizing low-cost design. In a first aspect, an embodiment of the present utility model provides a narrow pulse current source, where the power source includes a switching power module, a first voltage reduction module, a second voltage reduction module, a first voltage stabilizing module, a second voltage stabilizing module, a pulse signal generating module, and a signal adjusting module; The output end of the switching power supply module is electrically connected with the input end of the first voltage stabilizing module through the first voltage reducing module; the output end of the first voltage stabilizing module is electrically connected with the power end of the signal adjusting module; The output end of the switching power supply module is also electrically connected with the input end of the second voltage stabilizing module through the first voltage reducing module, the output end of the second voltage stabilizing module is electrically connected with the input end of the pulse signal generating module, the output end of the pulse signal generating module is electrically connected with the input end of the signal regulating module, the output end of the signal regulating module is electrically connected with a load to be tested, and the output end of the switching power supply module is also electrically connected with the voltage regulating end of the signal regulating module through the second voltage reducing module; The voltage value of the voltage regulating end of the signal regulating module is larger than the highest voltage of the input end of the signal regulating module. Optionally, the signal adjusting module comprises an isolation driving unit and a power adjusting output unit; The power end of the isolation driving unit is used as the power end of the signal adjusting module and is electrically connected with the output end of the first voltage stabilizing module; The input end of the isolation driving unit is used as the input end of the signal adjusting module and is electrically connected with the output end of the pulse signal generating module; The output end of the second voltage reduction module is electrically connected with the voltage regulation end of the power regulation output unit, and the voltage regulation end of the power regulation output unit is used as the voltage regulation end of the signal regulation module; the output end of the power regulation output unit is electrically connected with a load to be tested; The voltage value of the voltage regulating end of the power regulating output unit is larger than the highest voltage of the input end of the power regulating output unit. Optionally, the isolation driving unit comprises an isolation driving chip, wherein an input voltage source of the isolation driving chip is electrically connected with the output end of the first voltage stabilizing module; the first input end of the isolation driving chip is electrically connected with the output end of the pulse generation module; the second input end of the isolation driving chip is grounded; The output voltage source of the isolation driving chip is electrically connected with the second voltage reduction module; and the output end of the isolation driving chip is electrically connected with the input end of the power regulation output unit. Optionally, the power regulation output unit comprises a push-pull circuit, wherein the push-pull circuit comprises a first triode and a second triode; the control end of the first triode is connected with the control end of the second triode and is electrically connected with the output end