SNVA870A March   2019  – April  2020 LM25143 , LM25143-Q1 , LM5143 , LM5143-Q1 , LM5143A-Q1

 

  1.   LM5143-Q1 4-phase Buck Regulator Design for Automotive ADAS Applications
    1.     Trademarks
    2. 1 High Density Reference Design Description
      1. 1.1 Typical Applications
      2. 1.2 Features and Electrical Performance
    3. 2 Design Specifications
    4. 3 Application Circuit Diagram
    5. 4 Photo
    6. 5 Test Data and Performance Curves
      1. 5.1 Conversion Efficiency
    7. 6 EVM Documentation
      1. 6.1 Schematic
      2. 6.2 Bill of Materials
      3. 6.3 PCB Layout
    8. 7 Device and Documentation Support
      1. 7.1 Device Support
        1. 7.1.1 Development Support
      2. 7.2 Documentation Support
        1. 7.2.1 Related Documentation
          1. 7.2.1.1 PCB Layout Resources
          2. 7.2.1.2 Thermal Design Resources
  2.   Revision History

6.2 Bill of Materials

Table 3. Bill of Materials

COUNT REF DES DESCRIPTION PART NUMBER MFR
1 C1 Capacitor, Ceramic, 0.1μF, 100 V, X7R, 0603
12 C2, C4, C6, C7, C17, C18, C19, C20, C55, C56, C57, C58 Capacitor, Ceramic, 10 μF, 50 V, X7R, 1210, AEC-Q200 UMJ325KB7106KMHT Taiyo Yuden
CNA6P1X7R1H106K250AE TDK
Capacitor, Ceramic, 10 μF, 50 V, X7R, 1206, AEC-Q200 CGA5L1X7R1H106K160AC TDK
1 C3 Capacitor, Ceramic, 1 μF, 100 V, X7R, 1206, AEC-Q200 YFF31AH2A105M TDK
1 C5 Capacitor, Aluminum, 100 μF, 50 V, AEC-Q200 EEE-FC1H101P Panasonic
2 C8, C46 Capacitor, Ceramic, 0.47 μF, 100 V, X7R, 0805 Std Std
2 C9, C47 Capacitor, Ceramic, 0.47 μF, 16 V, X7R, 0805 Std Std
6 C10, C11, C12, C48, C49, C50 Capacitor, Ceramic, 2.2 μF, 16 V, X7R, 0603 Std Std
16 C13, C14, C15, C16, C21, C22, C23, C24, C51, C52, C53, C54, C59, C60, C61, C62 Capacitor, Ceramic, 0.01 μF, 100 V, X7R, 0603 GRM188R72A103KA01D Murata
9 C25, C26, C29, C38, C42, C63, C64, C67, C76 Capacitor, Ceramic, 0.1 μF, 25 V, X7R, 0603 Std Std
16 C30, C31, C32, C33, C34, C35, C36, C37, C68, C69, C70, C71, C72, C73, C74, C75 Capacitor, Ceramic, 47 μF, 6.3 V, X7R, 1210, AEC-Q200 CGA6P1X7S0J476M250AC TDK
JMK325B7476KMHTR Taiyo Yuden
GCM32ER70J476KE19L Murata
4 C39, C40, C77, C78 Capacitor, Ceramic, 33 pF, 100 V, C0G, 5%, 0603 Std Std
1 C41 Capacitor, Ceramic, 15 pF, 50 V, C0G, 5%, 0603 Std Std
2 C43, C79 Capacitor, Ceramic, 0.22 μF, 16 V, X7R, 0603 Std Std
1 C44 Capacitor, Ceramic, 0.01 μF, 25 V, X7R, 0603 Std Std
1 C45 Capacitor, Ceramic, 1 nF, 50 V, X7R, 10%, 0603 Std Std
4 D1, D2, D3, D4 Schottky Diode, 60 V, 1 A, SOD-323 PMEG6010CEJ Nexperia
0 H1, H2, H11, H12 Surface Mount Shield, 29.4-mm × 18.5-mm, Height: 7 mm BMI-S-205-F Laird
0 H7, H8, H17, H18 Shield Cover, 29.4-mm × 18.5-mm BMI-S-205-C Laird
2 J1, J3 Test Point Slotted, 0.118", TH 1040 Keystone
1 J2 Header, 2.54 mm, 10×1, Au, TH PBC10SABN Sullins
4 J4, J5, J6, J7 Terminal screw, vertical, snap-in PC Screw Terminal Keystone
1 L1 Inductor, 0.6 µH, 3 mΩ typ, 36 A Isat, 7.5-mm × 7.5-mm typ, 72 MHz SRF, AEC-Q200 XAL7030-601 Coilcraft
1 L2 Inductor, 0.26 µH, 2.16 mΩ typ, 31 A Isat, 5.48-mm × 5.28-mm typ, 117 MHz SRF, AEC-Q200 XEL5030-261 Coilcraft
4 L4, L5, L6, L7 Inductor, 0.68 μH, 4.8 mΩ typ, 25 A, 2.8 mm typ, AEC-Q200 744373460068 Würth Electronik
Inductor, 0.68 μH, 4.5 mΩ typ, 22 A, 2.8 mm typ, AEC-Q200 VCMV063T-R68MN2T Cyntec
8 Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8 MOSFET, N-Channel, 40 V, 5.7 mΩ, AEC-Q101 IPC50N04S5L5R5 Infineon
1 R2 Resistor, Chip, 1 Ω, 1/4 W, 5%, 1206 Std Std
6 R9, R12, R19, R35, R36, R43 Resistor, Chip, 0 Ω, 1/10 W, 1%, 0603 Std Std
4 R5, R6, R31, R32 Resistor, Chip, 7 mΩ, 1 W, 1%, 0508, AEC-Q200 KRL2012M-R007-F-T1 Susumu
4 R10, R11, R36, R37 Resistor, Chip, 49.9 Ω, 1/10 W, 1%, 0603 Std Std
1 R25 Resistor, Chip, 20 kΩ, 1/10 W, 1%, 0603 Std Std
8 R17, R18, R20, R21, R22, R23, R24, R28 Resistor, Chip, 100 kΩ, 1/16 W, 1%, 0603 Std Std
1 R26 Resistor, Chip, 22.1 kΩ, 1/10 W, 1%, 0603 Std Std
2 R27, R44 Resistor, Chip, 10 kΩ, 1/10 W, 1%, 0603 Std Std
4 TP1, TP2, TP3, TP4 Test Point, Miniature, SMT 5015 Keystone
1 U1 IC, LM5143-Q1, 65-V Dual Synchronous Buck Controller, VQFNP-40 LM5143QRGWRQ1 TI
1 PCB1 PCB, FR4, 6 layer, 2 oz, 105-mm x 75-mm PCB –