3results about How to "High output voltage accuracy" patented technology

The utility model discloses a single winding double output high -power power supply, including with the filter rectifier circuit of alternating current input connection, with the PFC circuit of filter rectifier circuit output connection, with the flyback two constant voltage output circuits of PFC circuit output connection. Flyback two constant voltage output circuit includes the integrated chip IC3 of setting between transformer TR2 primary side circuit and transformer TR2 secondary side winding, is provided with the pin 5 and pin 9 of being connected with transformer TR2 secondary side winding respectively on integrated chip IC3, pin 9 is connected through field effect transistor Q3 and with field effect transistor Q3 series connection setting's first output branch, and first output branch exports 15v voltage, pin 5 is connected through field effect transistor Q2 and with field effect transistor Q2 series connection setting's second output branch, and second output branch exports 12v voltage. The utility model discloses power supply second road output voltage power accuracy is at 3 5%, can satisfy the occasion of high output requirement.

This invention discloses a pulse output circuit and a high-voltage pulse power supply. The pulse output circuit includes: at least one output unit; each output unit includes two basic units, each basic unit including a power supply unit and a pulse network; each pulse network includes a bridge arm and an energy storage capacitor, the high-potential ends of which are connected to the positive output terminal of the corresponding power supply unit, and the low-potential ends of which are connected to the negative output terminal of the corresponding power supply unit. The midpoint of the first pulse network bridge arm is the positive output terminal of the corresponding output unit, the low-potential end of the first pulse network bridge arm is connected to the high-potential end of the second pulse network bridge arm, and the midpoint of the second pulse network bridge arm is the output terminal of the corresponding output unit; the positive output terminal of the first output unit is the positive output terminal of the pulse output circuit, the negative output terminal of the preceding output unit is connected to the positive output terminal of the following output unit, and the negative output terminal of the last output unit is the negative output terminal of the pulse output circuit. This invention can improve the accuracy of the pulse output voltage and eliminate pulse tailing.

The application discloses a band gap reference circuit and a chip, and the band gap reference circuit comprises a first MOS transistor, a first transistor, a second transistor, a first resistor, a second resistor, a third resistor, an amplifier and an adjustable resistor unit. Compared with a traditional band gap reference circuit structure, the circuit structure of the application is simple, the output voltage precision is high, the noise of a power supply and ground is well inhibited, the interference of a reference voltage caused by a large ground noise in a DCDC converter and the like can be well solved, and the application can be widely applied to a semiconductor integrated circuit as a high-performance reference circuit.