SLUSBL5A
February 2015 – June 2019
UCC28730
PRODUCTION DATA.
1
Features
2
Applications
3
Description
Device Images
Simplified Schematic
Zero-Power Input Consumption at No-Load
4
Revision History
5
Pin Configuration and Functions
Pin Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
Timing Requirements
6.7
Switching Characteristics
6.8
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Detailed Pin Description
7.3.1.1
VDD (Device Bias Voltage Supply)
7.3.1.2
GND (Ground)
7.3.1.3
HV (High Voltage Startup)
7.3.1.4
DRV (Gate Drive)
7.3.1.5
CBC (Cable Compensation)
7.3.1.6
VS (Voltage Sense)
7.3.1.7
CS (Current Sense)
7.3.2
Primary-Side Regulation (PSR)
7.3.3
Primary-Side Constant Voltage Regulation
7.3.4
Primary-Side Constant Current Regulation
7.3.5
Wake-Up Detection and Function
7.3.6
Valley-Switching and Valley-Skipping
7.3.7
Startup Operation
7.3.8
Fault Protection
7.4
Device Functional Modes
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.2.1
Stand-By Power Estimate
8.2.2.2
Input Bulk Capacitance and Minimum Bulk Voltage
8.2.2.3
Transformer Turns Ratio, Inductance, Primary-Peak Current
8.2.2.4
Transformer Parameter Verification
8.2.2.5
Output Capacitance
8.2.2.6
VDD Capacitance, CVDD
8.2.2.7
VS Resistor Divider, Line Compensation, and Cable Compensation
8.2.2.8
VS Wake-Up Detection
8.2.3
Application Curves
8.3
Do's and Don'ts
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
11
Device and Documentation Support
11.1
Device Support
11.1.1
Development Support
11.1.2
Device Nomenclature
11.1.2.1
Capacitance Terms in Farads
11.1.2.2
Duty-Cycle Terms
11.1.2.3
Frequency Terms in Hertz
11.1.2.4
Current Terms in Amperes
11.1.2.5
Current and Voltage Scaling Terms
11.1.2.6
Transformer Terms
11.1.2.7
Power Terms in Watts
11.1.2.8
Resistance Terms in Ω
11.1.2.9
Timing Terms in Seconds
11.1.2.10
DC Voltage Terms in Volts
11.1.2.11
AC Voltage Terms in Volts
11.1.2.12
Efficiency Terms
11.2
Documentation Support
11.2.1
Related Documentation
11.3
Receiving Notification of Documentation Updates
11.4
Community Resources
11.5
Trademarks
11.6
Electrostatic Discharge Caution
11.7
Glossary
12
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
D|7
MPDS347D
Thermal pad, mechanical data (Package|Pins)
Orderable Information
slusbl5a_oa
slusbl5a_pm
6.2
ESD Ratings
VALUE
UNIT
V
(ESD)
Electrostatic discharge
Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001
(1)
±2000
V
Charged-device model (CDM), per JEDEC specification JESD22-C101
(2)
±500
(1)
JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
(2)
JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.