SLUSC82B April   2017  – July 2026 UCC24630

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Timing Requirements
    7. 5.7 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Start Up and UVLO
      2. 6.3.2 Volt-Sec SR Driver On-Time Control
      3. 6.3.3 CCM Dead Time
      4. 6.3.4 Standby Operation
      5. 6.3.5 Pin Fault Protection
        1. 6.3.5.1 VPC Pin Overvoltage
        2. 6.3.5.2 VPC Pin Open
        3. 6.3.5.3 VSC Pin Open
        4. 6.3.5.4 TBLK Pin Open
        5. 6.3.5.5 VPC and VSC Short to Ground
        6. 6.3.5.6 TBLK Pin Short to Ground
    4. 6.4 Device Functional Modes
      1. 6.4.1 Start-Up
      2. 6.4.2 Normal Operation
      3. 6.4.3 Standby Operation
      4. 6.4.4 Conditions to Stop Operation
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 AC-to-DC Adapter, 19.5V, 65W
      2. 7.2.2 Design Requirements
      3. 7.2.3 Calculation of Component Values
        1. 7.2.3.1 VPC Input
        2. 7.2.3.2 VSC Input
        3. 7.2.3.3 TBLK Input
      4. 7.2.4 Application Curves
    3. 7.3 Best Design Practices
    4. 7.4 Power Supply Recommendations
    5. 7.5 Layout
      1. 7.5.1 Layout Guidelines
        1. 7.5.1.1 VDD Pin
        2. 7.5.1.2 VPC Pin
        3. 7.5.1.3 VSC Pin
        4. 7.5.1.4 GND Pin
        5. 7.5.1.5 TBLK Pin
        6. 7.5.1.6 DRV Pin
      2. 7.5.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Device Nomenclature
        1. 8.1.1.1 Definition of Terms
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

7.2.2 Design Requirements

For this design example, use the parameters listed in Table 7-1.

Table 7-1 Performance Specifications AC-to-DC Adapter 19V, 65W
PARAMETERTEST CONDITIONSMINNOMMAXUNIT
Input Characteristics
VACINInput voltage90115/230265V
fLINEFrequency4750/6064Hz
VAC(uvlo)Brownout voltageIOUT = IOUT(nom)80VRMS
VAC(run)Brownout recovery voltage90VRMS
IINInput currentVACIN = VACIN(min), IOUT = IOUT(nom)1.65A
Output Characteristics
VOUTOutput voltageVACIN = VACIN(min) to VACIN(max),
IOUT = 0 to IOUT(nom)		18.519.520.5V
IOUT(nom)Nominal output currentVACIN = VACIN(min) to VACIN(max)3.33A
IOUT(min)Minimum output currentVACIN = VACIN(min) to VACIN(max)0A
ΔVOUTOutput voltage rippleVACIN = VACIN(min) to VACIN(max),
IOUT = 0 to IOUT(nom)		500mV
POUTOutput powerVACIN = VACIN(min) to VACIN(max)65
System Characteristics
ηavgAverage efficiencyVACIN = VACIN(nom), IOUT = 25%, 50%, 75%, 100% of IOUT(nom)89%90%
ƞ10%10% Load efficiencyVACIN = VACIN(nom), IOUT = 10% of IOUT(nom)79%82%
PNLNo load powerVACIN = VACIN(nom), IOUT = 060120mW