SLPS665 March   2018 CSD86356Q5D

PRODUCTION DATA.  

  1. 1Features
  2. 2Applications
  3. 3Description
    1.     Top View
      1.      Device Images
  4. 4Revision History
  5. 5Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 Recommended Operating Conditions
    3. 5.3 Thermal Information
    4. 5.4 Power Block Performance
    5. 5.5 Electrical Characteristics – Q1 Control FET
    6. 5.6 Electrical Characteristics – Q2 Sync FET
    7. 5.7 Typical Power Block Device Characteristics
    8. 5.8 Typical Power Block MOSFET Characteristics
  6. 6Application and Implementation
    1. 6.1 Application Information
      1. 6.1.1 Equivalent System Performance
        1. 6.1.1.1 Comparison of RDS(ON) vs ZDS(ON)
      2. 6.1.2 Power Loss Curves
      3. 6.1.3 Safe Operating Area (SOA) Curves
      4. 6.1.4 Normalized Curves
    2. 6.2 Typical Application
      1. 6.2.1 Design Example: Calculating Power Loss and SOA
      2. 6.2.2 Operating Conditions
        1. 6.2.2.1 Calculating Power Loss
        2. 6.2.2.2 Calculating SOA Adjustments
  7. 7Layout
    1. 7.1 Recommended Schematic Overview
    2. 7.2 Recommended PCB Design Overview
      1. 7.2.1 Electrical Performance
      2. 7.2.2 Thermal Performance
  8. 8Device and Documentation Support
    1. 8.1 Receiving Notification of Documentation Updates
    2. 8.2 Community Resources
    3. 8.3 Trademarks
    4. 8.4 Electrostatic Discharge Caution
    5. 8.5 Glossary
  9. 9Mechanical, Packaging, and Orderable Information
    1. 9.1 Q5D Package Dimensions
    2. 9.2 Pin Configuration
    3. 9.3 Land Pattern Recommendation
    4. 9.4 Stencil Recommendation

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.2.2 Thermal Performance

The power block has the ability to utilize the GND planes as the primary thermal path. As such, the use of thermal vias is an effective way to pull away heat from the device and into the system board. Concerns of solder voids and manufacturability problems can be addressed by the use of three basic tactics to minimize the amount of solder attach that will wick down the via barrel:

  • Intentionally space out the vias from each other to avoid a cluster of holes in a given area.
  • Use the smallest drill size allowed in your design. The examples in Figure 33 and Figure 34 use vias with a 10-mil drill hole and a 16-mil capture pad.
  • Tent the opposite side of the via with solder-mask.

In the end, the number and drill size of the thermal vias should align with the end user’s PCB design rules and manufacturing capabilities.

CSD86356Q5D Top.gifFigure 33. Recommended PCB Layout (Top Down View)
CSD86356Q5D Bottom.gifFigure 34. Recommended PCB Layout (Bottom View) (1)
1. The yellow box on Figure 34 signifies an approximate location of the power block on the upper layer.