Low-cost omnidirectional fully-compatible driving device

The invention discloses a low-cost omnidirectional fully-compatible driving device. A voltage monitoring unit is used for detecting the upper-end voltage of a switch K103 and transmitting the detected voltage to a high-frequency constant-current control IC (Integrated Circuit); the high-frequency constant-current control IC is used for judging whether to make the K103 enter high-frequency BUCK PWM (Pulse-Width Modulation) or enter a current-limiting running mode according to a voltage value output by the voltage monitoring unit and the detected current value of the switch K103; a current-limiting constant-current unit is used for the peak current of a monitoring resistor R to flow through, and is used for entering a current-limiting constant-current mode through the switch K103; and an intelligent control unit is used for realizing time sequence control of K101 through a delta time delay method by means of current on the voltage monitoring unit and the resistor R and a signal provided by the current-limiting constant-current unit. The low-cost omnidirectional fully-compatible driving device can be compatible under the situation of not damaging a lamp tube or a ballast, and four types of compatibility, namely, inductive compatibility, coupling electronic compatibility, ordinary electronic compatibility and preheating electronic compatibility, and full compatibility with direct input of mains supply are realized.