MEZS84801A

mEZS84801A 48V, 12W, PoE Power Supply, IEEE 802.3af Compliant FEATURES     Do-It-Yourself Option Available Power Derating     37V to 57V PSE Input 12V Output Voltage 1A Load Current No Optocoupler Feedback Over-Current Protection Over-Temperature Protection Over-Voltage Protection Minimal External Components ORDERING INFORMATION Part Number Input Voltage (V) MEZS84801A 37 - 57 Output Voltage Output Current (V) (A) 12 1 Efficiency Up to 85% VIN = 48V, VOUT = 12V Natural Convection ELECTRICAL CHARACTERISTICS Input Voltage Range VIN Continuous Output Voltage Set Accuracy Output Voltage Ripple Efficiency vs. Load Current VIN = 37V, 48V, and 57V, VOUT = 12V 37V to 57V ±4% (Typ.) IOUT = 1A 180mV (Typ.) Line Regulation ±0.5% (Typ.) Load Regulation ±0.2% (Typ.) Efficiency IOUT = 1A, Include Input Bridge 84.5% Switching Frequency IOUT = 1A 140kHz (Typ.) Minimum Output Current 10mA Operating Temperature Range 0 to 85°C Start-Up Time VIN on to VOUT Regulated 110ms (Typ.) Calculated MTBF MIL-HDBK-217F 4185x103 hrs NOTE: All electrical characteristics are tested under 25°C ambient temperature, VIN = 3.3V unless otherwise noted. mEZS84801A Rev. 1.0 www.MonolithicPower.com 3/1/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. Preliminary Specifications Subject to Change © 2017 MPS. All Rights Reserved. 1 mEZS84801A 48V, 12W, PoE Power Supply, IEEE 802.3af Compliant DO-IT-YOURSELF SCHEMATIC J1 CR1 VDD T1 CR2 749020010A VSS J2 VDD C1A, C1B, C1C, C1D 2.2μFX4 DET C5 0.1μF VDD D3 R4 10kΩ VSS VOUT D2 PG R6 41.2Ω D1 T2 SW T2P J3 C4 10nF FB2 R5 24.9kΩ C6 1nF R1 56.2kΩ D4 R2 20kΩ R8 1kΩ C2A 22μF R7 20Ω C2B 22μF C2C 220μF J4 FB1 CLASS VSS FTY C7 1000pF VCC ILIM AGND RTN GND AUX MODE R3 52.3kΩ C3 1μF PRODUCT PACKAGE AND DIMENSIONS TOP VIEW SIDE VIEW Pin Designation Function J1 VIN PSE Lan Input 1~2 VIN Bridge One Input 3~4 VIN Bridge Two Input 5 ~ 12 Signal Output Lan Signal Output 13 ~ 14 VOUT Output Voltage 15 ~ 16 GND Output Ground 17 ~ 18 VDD Input Voltage after Bridge 19 ~ 20 VSS Input Ground after Bridge BOTTOM VIEW NOTE: Contact factory for different sizes of the boards (Quantity >2k). For more information, Gerber files, and PCB layout, please contact mEZsupport@monolithicpower.com mEZS84801A Rev. 1.0 www.MonolithicPower.com 3/1/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. Preliminary Specifications Subject to Change © 2017 MPS. All Rights Reserved. 2 mEZS84801A 48V, 12W, PoE Power Supply, IEEE 802.3af Compliant BILL OF MATERIALS Item 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Qty RefDes 4 C1A, C1B, C1C, C1D 2 C2A,C2B 1 C2C 1 C3 1 C4 1 C5 1 C6 1 C7 1 R1 1 R2 1 R3 1 R4 1 R5 1 R6 1 R7 Value 2.2μF 22μF 220μF 1μF 10nF 0.1μF 1nF 1nF 56.2kΩ 20kΩ 52.3kΩ 10kΩ 24.9kΩ 41.2 20 Description Ceramic Cap., 100V, X7R Ceramic Cap., 25V, X7R Tantalum Cap, 16V Ceramic Cap., 10V, X7R Ceramic Cap., 100V, X7R Ceramic Cap., 100V, X7R Ceramic Cap., 100V, X7R Ceramic Cap., 2000V, X7R Film Res, 1% Film Res, 1% Film Res, 1% Film Res, 1% Film Res, 1% Film Res, 1% Film Res, 1% Film Res, 1% 16 1 R8 1kΩ 17 1 D1 SBR8U60P5 18 1 D2 BAV21 19 1 D3 SMAJ58A 20 1 D4 1N4148 21 1 T1 22 1 T2 23 1 J1 24 1 J2 25 2 J3,J4 26 2 CR1, CR2 HD01-T 27 1 U1 MP8007 Package Manufacturer Manufacturer P/N 1210 muRata GRM32ER72A225KA35L 1210 muRata GRM32ER71E226KE15L Solid SMD Mouser T491D227K016ZT7280 603 muRata GRM188R71A105KA61D 805 muRata GRM21BR72A103KA01L 1206 Murata GRM319R72A104KA01D 603 muRata GRM188R72A102KA01D 1808 muRata GR442QR73D102KW01L 603 ROYAL RC0603FR-0756K2L 603 ROYAL RC0603FR-0720KL 603 ROYAL RC0603FR-0752K3L 1206 ROYAL RC1206FR-0710KL 603 ROYAL RC0603FR-0724K9L 603 ROYAL RC0603FR-0741R2L 805 ROYAL RC0805FR-0720RL 603 ROYAL RC0603FR-071KL POWERDI5 Diodes SBR8U60P5-13 SOD-123 Diodes BAV21W-7-F TVS SMA Littlefuse SMAJ58A Switching Diode, 75V, 250mW SOD-323 Diodes 1N4148WS-7-F SMD Wurth 749020010A Wurth 750316206 Wurth 615 008 140 121 8A, 60V, Super Barrier Rectifier Switching Diode, 200V, 200mW 749020010A LAN-Transformer WE-LAN Np:Ns:Na = 22:10:6, DIP Lp = 47.4μH, Core = EE13 RJ Jack / Signal Line EMI/RFI RJ45-8N4-B Filters 6 TRMN BRD/CBLE RJ45-TAB GRND 8-Pin Block Inductor 12-Pin Jack, 100mil Clearance 47.4μH 4-Pin Jack, 100mil Clearance 0.8A Surface-Mounted Glass Passivated Bridge Rectifier IEEE 802.3af/at Compatible PoE Power Device Interface with 13W Primary-Side Regulated Flyback or Buck Converter Wurth Wurth MiniDIP Diodes Inc HD01-T QFN-28 MPS MP8007 mEZS84801A Rev. 1.0 www.MonolithicPower.com 3/1/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. Preliminary Specifications Subject to Change © 2017 MPS. All Rights Reserved. 3