IC manufacturers (103)
- All manufacturers
Analog Devices
Infineon Technologies
Microchip
Onsemi
Renesas
ROHM
STMicroelectronics
Texas Instruments
- 3peak incorporated (35)
- Ablic (23)
- Acco Semiconductor (1)
- Advanced Power (4)
- Allegro Microsystems (100)
- Alpha & Omega Semiconductor (37)
- AnalogySemi (3)
- AnDAPT Inc (204)
- Anpec (13)
- AXElite (2)
- Backward (6)
- Bright Power Semiconductor (1)
- Broadcom (46)
- Cambridge GaN Devices (18)
- Chipanalog Micro (10)
- Cologne Chips (1)
- Convenient Power (1)
- Dialog Semiconductor (12)
- Diodes Incorporated (258)
- Divimath (8)
- Elmos AG (1)
- EPC (140)
- e-Peas Semiconductors (1)
- Eta Solutions Co. Ltd. (9)
- GaN Systems (8)
- GaNPower (3)
- Giantec (1)
- Gstek Wuxi (1)
- Helix Semiconductor (7)
- IKON (1)
- Indie Semiconductor (8)
- Innovision Semiconductor Inc (2)
- Intel (68)
- Inventchip Technology (3)
- ISSI (51)
- JoulWatt (20)
- KDPOF (3)
- Kinetic Technology (8)
- Lattice semiconductor Corporation (38)
- Littelfuse (1)
- Lumissil Microsystems (8)
- M3 Technology (M3Tek) (7)
- Macnica (22)
- Marvell Semiconductor (1)
- MaxLinear (181)
- Menlo Micro (1)
- MikroE (25)
- MindCet (2)
- Monolithic Power Systems (981)
- Navitas Semiconductor Inc (6)
- NewEdge Technologies, Inc. (1)
- Nexperia (267)
- Nisshinbo Micro Device Inc. (10)
- Novosense Micro (1)
- NXP (340)
- O2 Micro International Ltd (10)
- On Bright (7)
- Panasonic (2)
- PN Junction Semiconductor (2)
- Power Integrations (117)
- Powermat (1)
- Pulsiv (19)
- Qorvo (97)
- Realsil SuRealsil(tek) Microelectronics (1)
- Richtek (297)
- Sanken Electric Co., Ltd. (16)
- Sckipio (6)
- Semtech (86)
- SG-Micro (58)
- SiFive (2)
- Silanna Semiconductor (9)
- Silergy Corporation (34)
- Silicon Laboratory Inc. (108)
- Silicontent Technology (59)
- Silvertel (59)
- Skycore Semiconductors (1)
- Skyworks (33)
- Southchip (18)
- Summit Wireless (1)
- Tagore Tech (7)
- Taiwan Semiconductor (1)
- TDK Corporation (1)
- Tempo Semiconductor (1)
- Torex (37)
- Toshiba (27)
- Transphorm (21)
- TransSIP (2)
- Union (21)
- uPI Semiconductor (2)
- Valens Semiconductor (31)
- Wise Integration (3)
- Wolfspeed (23)
- Xilinx (22)
- XL Semiconductor (3)
- XYSemi (62)
Overview
| Topology | Flyback Converter |
| Input voltage | 37-57 V |
| Output 1 | 3.3 V / 6.8 A |
Description
Demonstration circuit 2046A-A is a PoE powered device(PD) with an isolated power supply using synchronousflyback topology, featuring the LT®4276 and ideal diodebridge controller (LT4321).The LT4276 provides IEEE802.3af (PoE, Type 1),IEEE802.3at (PoE+, Type 2), and LTPoE++™ PD interfacingand power supply control. When the PD is fully powered,the PD interface switches power over from the powersourcing equipment (PSE) to the switcher through anexternal, low resistance, high power N-channel FET. Thehighly integrated LT4276 controls a high power, smallsizedpower supply that utilizes a highly efficient flybacktopology with synchronous rectification. The LT4321provides further efficiency improvement by minimizingthe bridge losses.The DC2046A-A supplies a 3.3V output at up to 6.8A. Italso demonstrates the use of an optional auxiliary powersupply input of 48V. When present, the auxiliary supplybecomes the dominant supply over PoE to provide power.
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | Winding Style | Number of windings | L1(µH) | Zmax(Ω) | IR(mA) | RDC max.(Ω) | VR(V) | Version | VIN | VOut1(V) | IOut1(A) | L(µH) | n | VT(V (AC)) | Size | Vaux(V) | RDC 1(mΩ) | RDC 2(mΩ) | RDC 3(mΩ) | Mount | SamplesAvailability & Sample | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | SPECWE-SL5 SMT Common Mode Line Filter, bifilar, 2 | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-SL5 SMT Common Mode Line Filter | Winding Stylebifilar | Number of windings2 | Inductance [1]3300 µH | Maximum Impedance10000 Ω | Rated Current650 mA | DC Resistance [1]0.36 Ω | Rated Voltage80 V | VersionSMT | – | – | – | Inductance3300 µH | – | Insulation Test Voltage300 V (AC) | – | – | – | – | – | MountSMT | –Check availability | |||
 | SPECWE-PoE+ Power over Ethernet Plus Transformer, –, – | Simulation– | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PoE+ Power over Ethernet Plus Transformer | – | – | Inductance [1]38 µH | – | – | – | – | VersionCCM Flyback | Input Voltage 37 - 57 V (DC) | Output Voltage 13.3 V | Output Current 17.5 A | Inductance38 µH | Turns Ratio6.67:1:4 | Insulation Test Voltage1500 V (AC) | SizeEP13 | Auxiliary Voltage12.7 V | DC Resistance 1100 mΩ | DC Resistance 23 mΩ | DC Resistance 3182 mΩ | MountSMT | –Check availability |
| Expected Availability | Opening inventory | Quantity |
|---|---|---|
| Current Availability | – | – |