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Wide-voltage non-isolated AC-DC constant current driver and LED lighting equipment

A constant current driver, non-isolated technology, applied in the field of circuits, can solve the problems of disadvantageous resource saving, high cost, serious heat generation, etc.

Pending Publication Date: 2021-05-11
MOSO POWER SUPPLY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the single-stage constant current driver has a simple structure and low cost, its output voltage is narrow
Therefore, the industry generally chooses multi-level constant-current drivers, among which two-level constant-current drivers are more common. Although the output voltage of the two-level constant-current driver is relatively wide, the number of components is too large, the heating phenomenon is serious, and the cost is too high. Conducive to saving resources

Method used

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  • Wide-voltage non-isolated AC-DC constant current driver and LED lighting equipment
  • Wide-voltage non-isolated AC-DC constant current driver and LED lighting equipment
  • Wide-voltage non-isolated AC-DC constant current driver and LED lighting equipment

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Embodiment Construction

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0030] Please refer to Figure 1 to Figure 10 , a wide-voltage non-isolated AC-DC constant current driver provided in an embodiment of the present application, including a non-isolated PFC main converter 10, a PFC controller 30, and a DC-DC (direct current to direct current, DC-DC) auxiliary converter 20 and DC-DC controller 40.

[0031] Wherein, the non-isolated PFC main converter 10 includes a main conversion module 110 and a main output port, and the main conversion module 110 includes a main output module 111 and an auxiliary output module 112; the DC-DC auxiliary converter 20 includes an auxiliary input port and an auxiliary output port; The PFC controller 30 includes a main feedback port a1 and a main control port a3; the DC-DC controller 40 includes an auxiliary feed...

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Abstract

The invention discloses a wide-voltage non-isolated AC-DC constant current driver and LED lighting equipment. The wide-voltage non-isolated AC-DC constant current driver comprises a non-isolated PFC main converter, a PFC controller, a DC-DC auxiliary converter and a DC-DC controller. The non-isolated PFC main converter comprises a main conversion module and a main output port. The main conversion module comprises a main output module and an auxiliary output module. The DC-DC auxiliary converter comprises an auxiliary input port and an auxiliary output port; the PFC controller comprises a main feedback port; the DC-DC controller comprises an auxiliary feedback port; and the main output port and the auxiliary output port are connected in series to form a total output port. The auxiliary voltage of the auxiliary output module is controlled to be a constant value in a closed-loop mode, the total current of the total output port is controlled to be a constant value in a closed-loop mode, and when the total current is kept constant, the PFC controller can adjust the main voltage to enable the range of the total voltage to be wide.

Description

technical field [0001] The present application relates to the field of circuit technology, and in particular to a wide voltage non-isolated AC-DC (alternating current to direct current, AC-DC) constant current driver and a light emitting diode (light emitting diode, LED) lighting device. Background technique [0002] LEDs are used in lighting equipment, which has the advantages of wide color gamut, high brightness, large viewing angle, low power consumption, and long life. Therefore, LED lighting equipment is widely used in various lighting display fields. For example, more common securities trading and financial information display, airport flight dynamic information display, port and station passenger guidance information display, stadium information display, road traffic information display, power dispatching and vehicle dynamic tracking and other dispatching command center information display, shopping malls Display of business publicity information and advertising media...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B45/30H05B45/345H05B45/37H05B45/355H05B45/32
CPCH05B45/30H05B45/345H05B45/37H05B45/355H05B45/32
Inventor 胡炎申
Owner MOSO POWER SUPPLY TECH