Bridge synchronous rectifier
First Claim
1. A full-wave rectifier configured to convert an AC input toa DC output comprising;
- a first input terminal;
a second input terminal;
a first output terminal; and
a second output terminal;
wherein said full-wave rectifier further comprises;
a first half-wave rectifier comprising;
i. a first MOSFET device having a source terminal wired to said first output terminal, a drain terminal wired to said first input terminal, and a gate terminal;
ii. a fifth half-wave rectifier in parallel with said first MOSFET device, wired to the source terminal and the drain terminal of the first MOSFET device;
iii. a first current monitor configured to monitor a drain-current flowing through the drain terminal of the first MOSFET device and to send a gate signal to the gate terminal of the first MOSFET device such that the first MOSFET device is switched to its ON state when said drain-current exceeds a first threshold current and the first MOSFET device is switched to its OFF state when said drain-current falls below a second threshold current;
a second half-wave rectifier comprising;
i. a first MOSFET device having a source terminal wired to said first output terminal, a drain terminal wired to said first input terminal, and a gate terminal;
ii. a fifth half-wave rectifier in parallel with said first MOSFET device, wired to the source terminal and the drain terminal of the first MOSFET device;
iii. a first current monitor configured to monitor a drain-current flowing through the drain terminal of the first MOSFET device and to send a gate signal to the gate terminal of the first MOSFET device such that the first MOSFET device is switched to its ON state when said drain-current exceeds a first threshold current and the first MOSFET device is switched to its OFF state when said drain-current falls below a second threshold current;
a third half-wave rectifier having one anode wired to said first input terminal and one cathode wired to a second output terminal; and
a fourth half-wave rectifier having one anode wired to said second input terminal and one cathode wired to said second output terminal.
4 Assignments
0 Petitions
Accused Products
Abstract
A current-triggered synchro-rectifier comprising an electronic switch configured to be in its ON setting when the current flowing through its cathode exceeds a predetermined threshold. The electronic switch may include a half-wave rectifier wired to the source terminal and the drain terminal of a MOSFET device, and a current monitor configured to monitor the drain-current flowing through the drain terminal. The current monitor sends a gate signal to the gate terminal such that the MOSFET is switched to its ON state when the drain-current exceeds a first threshold current and the MOSFET is switched to its OFF state when the drain-current falls below a second threshold current. Usefully, the synchro-rectifier may be incorporated into a full-wave rectifier.
-
Citations
18 Claims
-
1. A full-wave rectifier configured to convert an AC input to
a DC output comprising; -
a first input terminal; a second input terminal; a first output terminal; and a second output terminal; wherein said full-wave rectifier further comprises; a first half-wave rectifier comprising; i. a first MOSFET device having a source terminal wired to said first output terminal, a drain terminal wired to said first input terminal, and a gate terminal; ii. a fifth half-wave rectifier in parallel with said first MOSFET device, wired to the source terminal and the drain terminal of the first MOSFET device; iii. a first current monitor configured to monitor a drain-current flowing through the drain terminal of the first MOSFET device and to send a gate signal to the gate terminal of the first MOSFET device such that the first MOSFET device is switched to its ON state when said drain-current exceeds a first threshold current and the first MOSFET device is switched to its OFF state when said drain-current falls below a second threshold current; a second half-wave rectifier comprising; i. a first MOSFET device having a source terminal wired to said first output terminal, a drain terminal wired to said first input terminal, and a gate terminal; ii. a fifth half-wave rectifier in parallel with said first MOSFET device, wired to the source terminal and the drain terminal of the first MOSFET device; iii. a first current monitor configured to monitor a drain-current flowing through the drain terminal of the first MOSFET device and to send a gate signal to the gate terminal of the first MOSFET device such that the first MOSFET device is switched to its ON state when said drain-current exceeds a first threshold current and the first MOSFET device is switched to its OFF state when said drain-current falls below a second threshold current; a third half-wave rectifier having one anode wired to said first input terminal and one cathode wired to a second output terminal; and a fourth half-wave rectifier having one anode wired to said second input terminal and one cathode wired to said second output terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
Specification