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Demonstration circuit 1823A features the ideal diode bridge controller LT®4320 suitable for applications that require high current AC to DC full-wave rectification or DC polarity correction.
The LT4320 drives four N-channel MOSFETs to perform full-wave rectification functionally similar to a diode bridge but with much lower power dissipation. This topology eases thermal design, and increases usable output voltage. In addition, an all N-channel topology has benefits over a P-channel topology such as a wider selection of MOSFETs, lower cost, lower RDS(ON), and smaller footprint.
Only a few essential components are required to operate the LT4320 as an ideal diode bridge: four N-channel MOSFETs, a bypass ceramic capacitor, and an AC smoothing capacitor (CLOAD). The DC1823A includes four very low RDSON N-channel MOSFETs (2.5mΩ typical) to support high current applications. When an AC voltage source is used, the onboard CLOAD (C2) capacitor allows for up to 1.5A of average output current. Add additional CLOAD capacitance to support higher current AC applications. A unidirectional TVS (D1) is included to protect the application from brief overvoltage events up to the part rating. A footprint for bidirectional TVS (D3) is also included and is recommended for electrically harsh conditions.
Manufacturer | Analog Devices Inc. |
---|---|
Category | Power Management |
Sub-Category | Ideal Bridge Controller |
Eval Board Part Number | DC1823A-ND |
Eval Board Supplier | Analog Devices Inc. |
Eval Board |
Board not Stocked
|
Current Out |
1.5 A (AC)
30 A (DC) |
Voltage In |
9 ~ 40 VDC
12 ~ 24 VAC |
Features |
Over Voltage Protection
Short Circuit Protection Under Voltage Protection, Brown-Out |
Quiescent Current [Typical] |
1.5 mA
|
Component Count + Extras |
7 + 17
|
Application / Target Market |
PoE, Power Over Ethernet
Power: Auxiliary Power Supply Power: Industrial Power Security IP Camera |
Design Author |
Linear Technology
|
Quiescent Current [Maximum] |
- Not Given
|
Main I.C. Base Part |
LT4320IDD
|
Date Created By Author | 2013-04 |
Date Added To Library | 2013-11 |
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Orders are typically delivered to China within 4 days depending on location.
Free delivery to China on orders of $100 USD or more. A delivery charge of $30 USD will be billed on all orders less than $100 USD.
CPT if prepay and add, FCA Thief River Falls if billing to a shipper account as defined by INCOTERMS 2010
Customer is responsible for all applicable duties, tariffs, brokerage fees and taxes
Credit account for qualified institutions and businesses
Payment in Advance by Wire Transfer
More Products From Fully Authorized Partners
Average Time to Ship 1-3 Days, extra ship charges may apply. Please see product page, cart, and checkout for actual ship speed.
Incoterms: CPT (Duty, customs, and applicable VAT/Tax due at time of delivery)
For more information visit Help & Support
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