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Overview
| Topology | Other Topology |
| IC revision | 1.0 |
Description
A galvanically-isolated AC-DC power converter is widely used in most power supply applications including battery charger, mobile and laptop adaptors, and server power supplies. The converter takes the power from the AC input mains (grid), processes it internally, and feeds it to the load with DC voltage as per the specification. The power train mainly consists of a non-isolated AC-DC front-end converter, which is followed by an isolated DC-DC converter. The latter uses a High-Frequency (HF) transformer, which provides the necessary galvanic isolation between the input (AC side) and the final DC output. There are many topology options for both the AC-DC and DC-DC converter stages. In this reference design, we have used a Totem-Pole PFC (TPPFC) topology for the front-end AC-DC converter, and an LLC resonant converter topology for the second-stage DC-DC converter. The TPPFC takes the power from the grid and internally generates a stable 400V DC bus, which the LLC stage uses as its input. The LLC resonant converter processes itand outputs a 20V regulated DC voltage across its output terminals. The use of Tagore Technology’s Superior GaN FETs, TP44100SG and TP44200SG, have helped achieve higherpower conversion efficiency in comparison to power converters using Si MOSFETs.
Typical applications
- Charger
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Tol. C | Size | Qmin. | DF(%) | RISO | Ceramic Type | Fl(mm) | Packaging | IR(mA) | IR 2(mA) | ISAT(mA) | RDC(mΩ) | fres(MHz) | Type | Endurance(h) | IRIPPLE(mA) | Z(mΩ) | ILeak(µA) | Ø D(mm) | IR(A) | L(mH) | RDC max.(mΩ) | VR(V (DC)) | VT(V (AC)) | Material | L(mm) | W(mm) | H(mm) | Mount | SamplesAvailability & Sample | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | SPECWCAP-CSMH Mid and High Voltage, 1 µF, ±10% | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSMH Mid and High Voltage | Capacitance1 µF | Capacitance±10% | Size2220 | – | Dissipation Factor2.5 % | Insulation Resistance0.1 GΩ | Ceramic TypeX7R Class II | Pad Dimension0.85 mm | Packaging7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Rated Voltage630 V (DC) | – | – | Length5.7 mm | Width5 mm | Height2.8 mm | – | –Check availability | |||
 | SPECWCAP-ASLI Aluminum Electrolytic Capacitors, 100 µF, ±20% | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-ASLI Aluminum Electrolytic Capacitors | Capacitance100 µF | Capacitance±20% | Size6.3 x 7.7 | – | Dissipation Factor14 % | Insulation Resistance1 MΩ | – | – | Packaging15" Tape & Reel | – | – | – | – | – | – | Endurance 2000 | Ripple Current300 mA | Impedance380 mΩ | Leakage Current35 µA | Diameter6.3 mm | – | – | – | Rated Voltage35 V (DC) | – | – | Length7.7 mm | Width6.6 mm | – | MountV-Chip SMT | –Check availability | |||
 | SPECWE-CMBNC Common Mode Power Line Choke Nanocrystalline, –, – | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CMBNC Common Mode Power Line Choke Nanocrystalline | – | – | SizeL | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Rated Current3.5 A | Inductance35 mH | DC Resistance80 mΩ | Rated Voltage300 V (DC) | Insulation Test Voltage2100 V (AC) | MaterialNanocrystalline | Length27.5 mm | Width18 mm | Height32 mm | MountTHT | –Check availability | |||
 | SPECWE-CMB HC Common Mode Power Line Choke, –, – | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CMB HC Common Mode Power Line Choke | – | – | SizeType S | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Rated Current6.5 A | Inductance0.45 mH | DC Resistance10 mΩ | Rated Voltage250 V (DC) | Insulation Test Voltage1500 V (AC) | MaterialMnZn | Length18.5 mm | Width14.5 mm | Height22 mm | MountTHT | –Check availability | |||
 | SPECWE-FI Leaded Toroidal Line Choke, –, – | Simulation– | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-FI Leaded Toroidal Line Choke | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Rated Current5.4 A | Inductance0.15 mH | DC Resistance42 mΩ | – | – | – | Length26 mm | Width13 mm | – | MountTHT | –Check availability | ||
 | SPECWE-PMI Power Multilayer Inductor, –, – | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PMI Power Multilayer Inductor | – | – | Size0805 | Q-Factor [1]25 | – | – | – | – | – | Rated Current600 mA | Rated Current 2850 mA | Saturation Current250 mA | DC Resistance250 mΩ | Self Resonant Frequency30 MHz | TypeLow RDC | – | – | – | – | – | – | Inductance0.0047 mH | DC Resistance312.5 mΩ | – | – | – | Length2 mm | Width1.2 mm | Height1 mm | MountSMT | –Check availability |
Availability Forecast
WE item number Packaging unitsLead time
––– weeks
| Expected Availability | Opening inventory | Quantity |
|---|---|---|
| Current Availability | – | – |
There is no forecast for this quantity request.
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