ZHCSGY8B October 2017 – July 2018 UCC21520-Q1
UNLESS OTHERWISE NOTED, this document contains PRODUCTION DATA.
- 1 特性
- 2 应用
- 3 说明
- 4 修订历史记录
- 5 Pin Configuration and Functions
-
6 Specifications
- 6.1 Absolute Maximum Ratings
- 6.2 ESD Ratings
- 6.3 Recommended Operating Conditions
- 6.4 Thermal Information
- 6.5 Power Ratings
- 6.6 Insulation Specifications
- 6.7 Safety-Related Certifications
- 6.8 Safety-Limiting Values
- 6.9 Electrical Characteristics
- 6.10 Switching Characteristics
- 6.11 Insulation Characteristics Curves
- 6.12 Typical Characteristics
- 7 Parameter Measurement Information
- 8 Detailed Description
-
9 Application and Implementation
- 9.1 Application Information
- 9.2
Typical Application
- 9.2.1 Design Requirements
- 9.2.2
Detailed Design Procedure
- 9.2.2.1 Designing INA/INB Input Filter
- 9.2.2.2 Select External Bootstrap Diode and its Series Resistor
- 9.2.2.3 Gate Driver Output Resistor
- 9.2.2.4 Estimate Gate Driver Power Loss
- 9.2.2.5 Estimating Junction Temperature
- 9.2.2.6 Selecting VCCI, VDDA/B Capacitor
- 9.2.2.7 Dead Time Setting Guidelines
- 9.2.2.8 Application Circuits with Output Stage Negative Bias
- 9.2.3 Application Curves
- 10Power Supply Recommendations
- 11Layout
- 12器件和文档支持
- 13机械、封装和可订购信息
11.2 Layout Example
Figure 44 shows a 2-layer PCB layout example with the signals and key components labeled.
Figure 44. Layout Example Figure 45 and Figure 46 shows top and bottom layer traces and copper.
NOTE
There are no PCB traces or copper between the primary and secondary side, which ensures isolation performance.
PCB traces between the high-side and low-side gate drivers in the output stage are increased to maximize the creepage distance for high-voltage operation, which will also minimize cross-talk between the switching node VSSA (SW), where high dv/dt may exist, and the low-side gate drive due to the parasitic capacitance coupling.
Figure 47 and Figure 48 are 3D layout pictures with top view and bottom views.
NOTE
The location of the PCB cutout between the primary side and secondary sides, which ensures isolation performance.
