SLUS873C January 2009 – December 2016 UC1825A-SP
PRODUCTION DATA.
- 1 Features
- 2 Applications
- 3 Description
- 4 Revision History
- 5 Description (continued)
- 6 Pin Configuration and Functions
- 7 Specifications
- 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 Auxiliary Supply Voltage
- 9.2.2.2 Oscillator Frequency
- 9.2.2.3 Preliminary Considerations
- 9.2.2.4 Input Power
- 9.2.2.5 Primary Current
- 9.2.2.6 Sense Resistor R(s)
- 9.2.2.7 MOSFET DC Losses
- 9.2.2.8 Selection of Core Material
- 9.2.2.9 Main Transformer Design
- 9.2.2.10 Calculation of Transformer
- 9.2.2.11 Minimum Core Size
- 9.2.2.12 Core Loss Limited Conditions
- 9.2.2.13 Core Geometry Selection
- 9.2.2.14 Wire Size Selection
- 9.2.2.15 Calculate Secondary RMS Current
- 9.2.2.16 Transformer Assembly
- 9.2.2.17 Calculation of Winding Resistances and Losses
- 9.2.2.18 Transformer Power Losses
- 9.2.2.19 Output Section
- 9.2.2.20 UC1825A-SP PWM Control Section
- 9.2.2.21 Closing the Feedback Loop
- 9.2.2.22 Summary
- 9.2.3 Application Curves
- 10Power Supply Recommendations
- 11Layout
- 12Device and Documentation Support
- 13Mechanical, Packaging, and Orderable Information
封裝選項
機械數據 (封裝 | 引腳)
散熱焊盤機械數據 (封裝 | 引腳)
訂購信息
12 Device and Documentation Support
12.1 Device Support
12.1.1 Third-Party Products Disclaimer
TI'S PUBLICATION OF INFORMATION REGARDING THIRD-PARTY PRODUCTS OR SERVICES DOES NOT CONSTITUTE AN ENDORSEMENT REGARDING THE SUITABILITY OF SUCH PRODUCTS OR SERVICES OR A WARRANTY, REPRESENTATION OR ENDORSEMENT OF SUCH PRODUCTS OR SERVICES, EITHER ALONE OR IN COMBINATION WITH ANY TI PRODUCT OR SERVICE.
12.2 Documentation Support
12.3 Receiving Notification of Documentation Updates
To receive notification of documentation updates, navigate to the device product folder on ti.com. In the upper right corner, click on Alert me to register and receive a weekly digest of any product information that has changed. For change details, review the revision history included in any revised document.
12.4 Community Resources
The following links connect to TI community resources. Linked contents are provided "AS IS" by the respective contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of Use.
-
TI E2E™ Online Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaboration among engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and help solve problems with fellow engineers.
-
Design Support TI's Design Support Quickly find helpful E2E forums along with design support tools and contact information for technical support.
12.5 Trademarks
E2E is a trademark of Texas Instruments.
All other trademarks are the property of their respective owners.
12.6 Electrostatic Discharge Caution
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
12.7 Glossary
SLYZ022 — TI Glossary.
This glossary lists and explains terms, acronyms, and definitions.