SBVS343 March   2019 TPS7A78

ADVANCE INFORMATION for pre-production products; subject to change without notice.  

  1. Features
  2. Applications
    1.     Typical Schematic
  3. Description
  4. Revision History
  5. Pin Configuration and Functions
    1.     Pin Functions
  6. Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Timing Requirements
    7. 6.7 Typical Characteristics
  7. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Active Bridge Control
      2. 7.3.2 Full Bridge (FB) and Half Bridge Configurations
      3. 7.3.3 4 to 1 Switch Capacitor Voltage Reduction
      4. 7.3.4 VLDO_IN Overvoltage Protection
      5. 7.3.5 Dropout Voltage Regulation
      6. 7.3.6 Current Limit
      7. 7.3.7 Programmable Power-Fail Detection
      8. 7.3.8 Power-Good (PG) Detection
      9. 7.3.9 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Normal Operation: AC Input mode
      2. 7.4.2 Dropout Mode
      3. 7.4.3 Disabled Mode
      4. 7.4.4 Normal Operation: DC Input mode
  8. Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Recommended Capacitor Types
      2. 8.1.2 Cap-Drop Capacitor CS
      3. 8.1.3 Surge Resistor RS
      4. 8.1.4 Input and Output Capacitors Requirements
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curves
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Receiving Notification of Documentation Updates
    2. 11.2 Community Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

パッケージ・オプション

メカニカル・データ(パッケージ|ピン)
発注情報

Typical Characteristics

at operating temperature TJ = 25°C, AC supply = 120 VRMS/60 Hz, bridge configuration = full-bridge, CS = 1.0 µF, CSCIN = 180 µF, CSC1 = 1.0 µF, CSC2 = 2.2 µF, CLDO_IN = 10 µF, CLDO_OUT = 1.0 µF, and IOUT = 1 mA (unless otherwise noted)
TPS7A78 D001-SBVS343-01.gif
FB configuration, CS = 47 nF
Figure 1. Startup vs Drop-Cap CS
TPS7A78 D005-SBVS343-01.gif
FB configuration, CS = 150 nF
Figure 3. Startup vs Drop-Cap CS
TPS7A78 D007-SBVS343-01.gif
VLDO_OUT = 3.3 V, IOUT 1 mA – 120 mA (1A/µs slew)
Figure 5. Load Transient
TPS7A78 D010-SBVS343-01.gif
Figure 7. Dropout vs IOUT with DC Supply for 5.0 V
TPS7A78 D004-SBVS343-01.gif
FB configuration, CS = 100 nF
Figure 2. Startup vs Drop-Cap CS
TPS7A78 D006-SBVS343-01.gif
FB configuration, CS = 330 nF
Figure 4. Startup vs Drop-Cap CS
TPS7A78 D008-SBVS343-01.gif
VLDO_OUT = 5.0 V, IOUT 1 mA – 120 mA (1A/µs slew)
Figure 6. Load Transient