SNVU695A June   2020  – January 2022 LP87702-Q1

 

  1. 1Introduction
  2. 2xWR Power Supply Requirements
    1. 2.1 Recommended Supply Voltage Requirements
    2. 2.2 Input Supply Current Requirements
    3. 2.3 Input Supply Ripple Requirements
  3. 3Power Solution
    1. 3.1 1.0 V and 1.8 V RF Rail LC Filters
  4. 4Measurements
  5. 5Schematic
  6. 6Bill of Materials
  7. 7Conclusion
  8. 8References
  9. 9Revision History

6 Bill of Materials

Table 6-1 shows the used components in this reference design with LP87702K-Q1, TPS62811-Q1, and LM61460-Q1 power tree.

Table 6-1 Bill of Materials
Item # Designator Quantity Value Part Number Manufacturer Description Package Reference
1 C1 1 47 µF EEE-FK1H470XP Panasonic CAP, AL, 47 uF, 50 V, ± 20%, 0.68 Ω, AEC-Q200 Grade 2, SMD SMT Radial D8
2 C2, C3 2 10 µF CGA5L1X7R1H106K160AC TDK CAP, CERM, 10 µF, 50 V,± 10%, X7R, AEC-Q200 Grade 1, 1206 1206
3 C4, C7 2 4.7 µF CGA5L3X7R1H475K160AE TDK CAP, CERM, 4.7 µF, 50 V,± 10%, X7R, AEC-Q200 Grade 1, 1206 1206
4 C5, C6 2 0.022 µF CGA3E2X7R2A223K080AA TDK CAP, CERM, 0.022 uF, 100 V, ± 10%, X7R, AEC-Q200 Grade 1, 0603 0603
5 C8 1 1000 pF GCM1885C1H102JA16D MuRata CAP, CERM, 1000 pF, 50 V,± 5%, C0G/NP0, AEC-Q200 Grade 1, 0603 0603
6 C9, C19, C25, C33, C48 5 1 µF GCM188R71C105KA64D MuRata CAP, CERM, 1 uF, 16 V, ± 10%, X7R, AEC-Q200 Grade 1, 0603 0603
7 C10, C11, C12, C13, C14, C15, C23 7 22 µF GCM31CR71A226KE02 MuRata CAP, CERM, 22 uF, 10 V, ± 10%, X7R, AEC-Q200 Grade 1, 1206 1206
8 C16 1 0.1 µF GCM155R71H104KE02D MuRata CAP, CERM, 0.1 uF, 50 V, ± 10%, X7R, AEC-Q200 Grade 1, 0402 0402
9 C17 1 1 µF GCM155C71A105KE38D MuRata CAP, CERM, 1 uF, 10 V, ± 10%, X7S, AEC-Q200 Grade 1, 0402 0402
10 C18, C44, C46, C47, C50, C52, C53 7 10 µF GCM21BR71A106KE22L MuRata CAP, CERM, 10 uF, 10 V, ± 10%, X7R, 0805 0805
11 C20 1 10 pF 06035A100JAT2A AVX CAP, CERM, 10 pF, 50 V, ± 5%, C0G/NP0, 0603 0603
12 C21 1 0.1 µF GCM155R71C104KA55D MuRata CAP, CERM, 0.1 uF, 16 V, ± 10%, X7R, 0402 0402
13 C22 1 10 pF GCM1555C1H100JA16D MuRata CAP, CERM, 10 pF, 50 V,± 5%, C0G/NP0, AEC-Q200 Grade 1, 0402 0402
14 C24, C32, C38 3 10 µF CL21B106KOQNNNE Samsung Electro-Mechanics CAP, CERM, 10 uF, 16 V, ± 10%, X7R, 0805 0805
15 C26, C27 2 22 µF GCM21BD70J226ME36L MuRata CAP, CERM, 22 uF, 6.3 V, ± 20%, X7T, AEC-Q200 Grade 1, 0805 0805
16 C28 1 10 µF GCM21BR70J106KE22L MuRata CAP, CERM, 10 uF, 6.3 V, ± 10%, X7R, AEC-Q200 Grade 1, 0805 0805
17 C29, C30, C34, C35 4 22 µF GCM31CR70J226KE23L MuRata CAP, CERM, 22 uF, 6.3 V, ± 10%, X7R, AEC-Q200 Grade 1, 1206 1206
18 C37 1 4700 pF GCM155R71H472KA37D MuRata CAP, CERM, 4700 pF, 50 V, ± 10%, X7R, AEC-Q200 Grade 1, 0402 0402
19 C39, C41, C42 3 0.1 µF 0402YC104KAT2A AVX CAP, CERM, 0.1 uF, 16 V, ± 10%, X7R, 0402 0402
20 C40 1 22 µF GRT21BR61E226ME13L MuRata CAP, CERM, 22 µF, 25 V,± 20%, X5R, AEC-Q200 Grade 3, 0805 0805
21 C43, C45, C49, C51 4 22 µF CGA5L1X7R0J226M160AC TDK CAP, CERM, 22 uF, 6.3 V, ± 10%, X7R, AEC-Q200 Grade 1, 1206 1206
22 C54, C55 2 390 pF CGA2B2C0G1H391J050BA TDK CAP, CERM, 390 pF, 50 V,± 5%, C0G/NP0, AEC-Q200 Grade 1, 0402 0402
23 L1 1 XEL5030-102MEB Coilcraft Inductor, Shielded, Composite, 1.0H, 16.9 A, 0.0084 Ω, AEC-Q200 Grade 1 SMT_5MM28_5MM48
24 L2 1 120 Ω BLM18KG121TH1D MuRata Ferrite Bead, 120 Ω at 100 MHz, 1.9 A, 0603 0603
25 L3, L4, L5 3 470 nH DFE252012PD-R47M MuRata Toko Inductor, Shielded, 470 nH, 4.7 A, 0.021 Ω, SMD 1008
26 L6 1 1 µH DFE252012PD-1R0M MuRata Toko Inductor, Shielded, 1 uH, 3.8 A, 0.035 Ω, AEC-Q200 Grade 1, SMD 1008
27 L7, L8, L9, L10 4 100 Ω MPZ2012S101A TDK Ferrite Bead, 100 Ω at 100 MHz, 4 A, 0805 0805
28 R1 1 255 kΩ CRCW0603255KFKEA Vishay-Dale RES, 255 k, 1%, 0.1 W, AEC-Q200 Grade 0, 0603 0603
29 R2, R11, R14, R18, R21, R23, R25, R26, R30, R31 10 0 Ω CRCW04020000Z0ED Vishay-Dale RES, 0, 5%, 0.063 W, AEC-Q200 Grade 0, 0402 0402
30 R3, R5, R6, R13 4 100 kΩ CRCW0402100KFKED Vishay-Dale RES, 100 k, 1%, 0.063 W, AEC-Q200 Grade 0, 0402 0402
31 R4, R16, R17 3 100 Ω CRCW0402100RFKED Vishay-Dale RES, 100, 1%, 0.063 W, AEC-Q200 Grade 0, 0402 0402
32 R7 1 43.2 kΩ CRCW040243K2FKED Vishay-Dale RES, 43.2 k, 1%, 0.063 W, AEC-Q200 Grade 0, 0402 0402
33 R8 1 1.00 kΩ CRCW04021K00FKED Vishay-Dale RES, 1.00 k, 1%, 0.063 W, AEC-Q200 Grade 0, 0402 0402
34 R9 1 5.90 kΩ CRCW04025K90FKED Vishay-Dale RES, 5.90 k, 1%, 0.063 W, AEC-Q200 Grade 0, 0402 0402
35 R10 1 10.0 kΩ CRCW040210K0FKED Vishay-Dale RES, 10.0 k, 1%, 0.063 W, AEC-Q200 Grade 0, 0402 0402
36 R12, R15 2 68.0 kΩ RC0603FR-0768KL Yageo RES, 68.0 k, 1%, 0.1 W, 0603 0603
37 R19, R20 2 3.3 kΩ CRCW04023K30JNED Vishay-Dale RES, 3.3 k, 5%, 0.063 W, AEC-Q200 Grade 0, 0402 0402
38 R22, R24, R27, R32 4 10 kΩ CRCW040210K0JNED Vishay-Dale RES, 10 k, 5%, 0.063 W, AEC-Q200 Grade 0, 0402 0402
39 R28, R29 2 3.83 Ω CRCW04023R83FKED Vishay-Dale RES, 3.83, 1%, 0.063 W, AEC-Q200 Grade 0, 0402 0402
40 U1 1 LM61460AASQRJRRQ1 Texas Instruments Automotive 6-A Low Noise Synchronous Buck Regulators, RJR0014A (VQFN-HR-14) RJR0014A
41 U2 1 TPS628110AQWRWYRQ1 Texas Instruments Automotive Low Input Voltage, Adjustable-Frequency Step-down Converter, RWY0009A (VQFN-HR-9) RWY0009A
42 U3 1 LP87702DRHBRQ1 Texas Instruments Boost and Dual Buck Regulators With Diagnostic Functions, RHB0032N (VQFN-32) RHB0032N
43 C31, C36 0 22 µF GCM31CR70J226KE23L MuRata CAP, CERM, 22 uF, 6.3 V, ± 10%, X7R, AEC-Q200 Grade 1, 1206 1206