Power supplying apparatus having a detectable useful life

• US 9,197,123 B2
• Filed: 05/03/2013
• Issued: 11/24/2015
• Est. Priority Date: 12/07/2012
• Status: Expired due to Fees

• Current Assignee: Solum Co., Ltd.
• Original Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Inventors: Noh, Young Seung, Lee, Bo Mi
• Primary Examiner(s): Dole, Timothy J
• Assistant Examiner(s): JAMALI, ISHRAT F
• Application Number:
  US13/887,265
• Publication Number:
  US 20140160813A1
• Time in Patent Office: 935 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: G01R 31/40 Testing power supplies testing photovoltaic devices H02S50/10
• CPC Class Codes: H02M 1/32 Means for protecting converters other than automatic disconnection
• CPC Class Codes: H02M 3/33507 with automatic control of the output voltage or current, e.g. flyback converters H02M3/33561, H02M3/33569 take precedence

Abstract

There is provided a power supplying apparatus capable of determining whether to be normally operated by detecting whether a capacitor deteriorates with age based on a ripple voltage generated by switching of a primary side, the power supplying apparatus including a power supply unit switching input power to convert the input power into preset direct current (DC) power, a detecting unit setting a reference voltage based on the DC power of the power supply unit and comparing the reference voltage with a ripple voltage included in the DC power to detect a voltage level of the ripple voltage, and a controlling unit determining whether an abnormality has occurred according to a detection result of the detecting unit.

Claims

1. A power supplying apparatus comprising:

a power supply unit switching input power of a primary side to convert the input power into preset direct current (DC) power;

a detecting unit setting a reference voltage based on the DC power of the power supply unit and comparing the reference voltage with a ripple voltage included in the DC power to detect a voltage level of the ripple voltage in a secondary side insulated from the primary side; and

a controlling unit determining whether an abnormality has occurred according to a detection result of the detecting unit,

wherein the detecting unit includes;

a dividing resistor group dividing a voltage level of the DC power according to a preset resistance ratio;

first and second diodes transferring respective voltage levels divided by the dividing resistor group to different paths;

a first capacitor stabilizing the voltage level from the first diode; and

a comparator comparing the voltage level from the second diode input to a negative terminal thereof and the voltage level from the first diode input to a positive terminal thereof.

2. The power supplying apparatus of claim 1, wherein the power supply unit includes a smoothing unit having a capacitor smoothing the power generated by rectifying the input power.

3. The power supplying apparatus of claim 2, wherein the detecting unit detects the voltage level of the ripple voltage caused by the capacitor of the smoothing unit.

4. The power supplying apparatus of claim 1, wherein the detecting unit includes:

a first dividing resistor group dividing a voltage level of the DC power according to a first preset resistance ratio;

a second dividing resistor group dividing a voltage level of the DC power according to a second preset resistance ratio;

a first capacitor stabilizing the voltage level divided by the second dividing resistor group; and

a comparator comparing the divided voltage level transferred from the first dividing resistor group and input to a negative terminal thereof and the divided voltage level transferred from the second dividing resistor group and input to a positive terminal thereof.

5. The power supplying apparatus of claim 4, wherein the detecting unit further includes a second capacitor stabilizing the voltage level divided by the first dividing resistor group.

6. The power supplying apparatus of claim 5, wherein the first capacitor has capacitance higher than that of the second capacitor.

7. The power supplying apparatus of claim 1, wherein the detecting unit further includes a second capacitor stabilizing the voltage levels divided by the dividing resistor group.

8. The power supplying apparatus of claim 7, wherein the first capacitor has capacitance higher than that of the second capacitor.

9. The power supplying apparatus of claim 2, wherein the power supply unit includes:

a rectifying unit rectifying the input power;

a converting unit switching the power smoothed by the smoothing unit and transforming the switched power according to a preset turns ratio; and

a stabilizing unit stabilizing the transformed power from the converting unit to output the stabilized power.

10. The power supplying apparatus of claim 1, further comprising an outputting unit switching an output of the DC power on or off according to a control of the controlling unit.

11. The power supplying apparatus of claim 1, further comprising a display unit displaying whether the abnormality has occurred according to a control of the controlling unit.

12. A power supplying apparatus comprising:

a power supply unit including a smoothing unit having a capacitor smoothing power generated by rectifying input power of a primary side and switching the smoothed power to convert the smoothed power into preset DC power;

a detecting unit setting a reference voltage based on the DC power of the power supply unit and comparing the reference voltage with a ripple voltage included in the DC power by the capacitor of the smoothing unit to detect a voltage level of the ripple voltage in a secondary side insulated from the primary side; and

a controlling unit determining whether an abnormality has occurred according to a detection result of the detecting unit,

wherein the detecting unit includes;

a dividing resistor group dividing a voltage level of the DC power according to a preset resistance ratio;

first and second diodes transferring respective voltage levels divided by the dividing resistor group to different paths;

a first capacitor stabilizing the voltage level from the first diode; and

a comparator comparing the divided voltage level transferred from the first dividing resistor group and input to a negative terminal thereof and the divided voltage level transferred from the second dividing resistor group and input to a positive terminal thereof.

13. The power supplying apparatus of claim 12, wherein the detecting unit includes:

a first dividing resistor group dividing a voltage level of the DC power according to a first preset resistance ratio;

a second dividing resistor group dividing a voltage level of the DC power according to a second preset resistance ratio;

a first capacitor stabilizing the voltage level divided by the second dividing resistor group; and

a comparator comparing the divided voltage level transferred from the first dividing resistor group and input to a negative terminal thereof and the divided voltage level transferred from the second dividing resistor group and input to a positive terminal thereof.

14. The power supplying apparatus of claim 13, wherein the detecting unit further includes a second capacitor stabilizing the voltage level divided by the first dividing resistor group.

15. The power supplying apparatus of claim 14, wherein the first capacitor has capacitance higher than that of the second capacitor.

16. The power supplying apparatus of claim 12, wherein the detecting unit further includes a second capacitor stabilizing the voltage levels divided by the dividing resistor group.

17. The power supplying apparatus of claim 16, wherein the first capacitor has capacitance higher than that of the second capacitor.

18. The power supplying apparatus of claim 12, wherein the power supply unit includes:

a rectifying unit rectifying the input power;

a converting unit switching the power smoothed by the smoothing unit and transforming the switched power according to a preset turns ratio; and

a stabilizing unit stabilizing the transformed power from the converting unit to output the stabilized power.

19. The power supplying apparatus of claim 12, further comprising an outputting unit switching an output of the DC power on or off according to a control of the controlling unit.

20. The power supplying apparatus of claim 12, wherein further comprising a display unit displaying whether the abnormality has occurred according to a control of the controlling unit.