Rohm BD71837MWV Manuals

Rohm BD71837MWV Manuals

Manuals and User Guides for Rohm BD71837MWV. We have 1 Rohm BD71837MWV manual available for free PDF download: Design Manual

Rohm BD71837MWV Design Manual

Rohm BD71837MWV Design Manual (47 pages)

Brand: Rohm | Category: Motherboard | Size: 1 MB

Table of Contents

1 Introduction

1
- Table of Contents
  2
2 Revision History

4
3 Features

5
- Terminologies
  5
- Reference Documents
  5
- PMIC Futures
  6
4 General Design Considerations

7
5 Platform Power Delivery Guidelines

18
- Platform Power Delivery
  18
- General Layout Guideline
  20
  - Overall Component Placement
    20
  - Large Current Loop
    21
  - Power GND
    22
  - VSYS (Power Supply for BD71837MWV Analog Circuit)
    22
  - Other Signal Pattern Precautions
    22
  - Feedback Sense Lines
    22
  - AGND Layout
    23
- BUCK Convertors
  24
  - BUCK1 (Vdd_Soc)
    24
    
    Schematic Example
    24
    
    Schematic Checklist
    24
    
    Parts Placement for each Decoupling Capacitor
    25
  - Buck2 (Vdd_Arm)
    25
    
    Schematic Example
    25
    
    Schematic Checklist
    26
    
    Layout Example
    26
  - Buck3 (Vdd_Gpu)
    27
    
    Schematic Example
    27
    
    Schematic Checklist
    27
    
    Layout Example
    28
  - Buck4 (Vdd_Vpu)
    29
    
    Schematic Example
    29
    
    Schematic Checklist
    29
    
    Layout Example
    30
  - Buck5 (Vdd_Dram)
    30
    
    Schematic Example
    30
    
    Schematic Checklist
    31
    
    Layout Example
    32
  - Buck6 (Nvcc_3P3)
    32
    
    Schematic Example
    32
    
    Schematic Checklist
    33
    
    Layout Example
    33
  - Buck7 (Nvcc_1V8)
    34
    
    Schematic Example
    34
    
    Schematic Checklist
    34
    
    Layout Example
    35
  - Buck8 (Nvcc_Dram)
    36
    
    Schematic Example
    36
    
    Schematic Checklist
    36
    
    Layout Example
    37
- Ldos
  38
  - Ldo1 (Nvcc_Snvs)
    38
  - Ldo2 (Vdd_Snvs)
    38
  - Ldo3 (Vdda_1P8/Vdda_Dram)
    38
  - Ldo4 (Vdda_0P9)
    38
  - Ldo5 (1P8_Phy)
    38
  - Ldo6 (0P9_Phy)
    38
  - Ldo7 (3P3_Phy)
    38
  - Schematic Examples
    39
    
    Schematic Checklist
    39
- Load SW
  41
  - Muxsw (Nvcc_Sd2)
    41
    
    Schematic Examples
    41
    
    Schematic Checklist
    41
- Crystal Oscillator Driver
  42
  - Xin / Xout / C32K_Out
    42
    
    Schematic Examples
    42
    
    Schematic Checklist
    42
    
    Layout Example
    43
- Interfaces
  44
  - I2C
    44
  - System Control - Reset, Power, and Control Signals
    45
  - Misc
    46

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