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

Electrical Characteristics

TJ = -40°C to 125°C,  AC Supply = 120 VRMS/60 Hz, Cs = 1.0uF, CSCIN = 180uF, CS1 = 1.0 uF, CS2 = 2.2uF , CLDO_IN = 10 uF, CLDO_OUT =1.0 µF, IOUT = 1 mA (unless otherwise noted). Typical values are at TJ = 25°C
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
UVLOSCIN_RISING SCIN Voltage for Switch_Cap Stage to start-up LDO_OUT=5V 23
UVLOSCIN_RISING SCIN Voltage for Switch_Cap Stage to start-up LDO_OUT<=3.3V 17
UVLOSCIN_POR SCIN Power Off Threshold 7.8
LDO_INPOR LDO Power On Reset VLDO_IN Rising 3.9 V
LDO_INPOR LDO Power On Reset VLDO_IN Falling 3.5 V
ΔVOUT/ΔIOUT Load Regulation 0mA<=IOUT<+120mA 10 20 mV
VLDO_OUT DC Output Accuracy VLDO_OUT = 3.3V SCIN=19VDC 1 %
VLDO_OUT DC Output Accuracy VLDO_OUT = 3.3V ILOAD=60mA SCIN=19VDC -2 2 %
VLDO_OUT DC Output Accuracy VLDO_OUT = 3.3V ILOAD=120mA SCIN=19VDC -3 3 %
ICL Output Current Limit VLDO_OUT=0.9xVLDO_OUT(nom) 160 215 300 mA
IDD_SCIN Current into TPS7A78 SCIN pin No load, no PF/PG pullup current LDO_OUT=3.3V 280 µA
VRIPPLE LDO output Ripple VLDO_IN=5.6V, VLDO_OUT=5V, CLDO_OUT=1µF, CSC1=1uF, CSC2=2uF, ILOAD=10mA1 10 mV
PFD Power Failure Detection PFD Falling 1.18 1.208 1.24 V
Hysteresis 110 mV
PF OPen Drain Leakage 50 nA
IPF Power Fail Sink Current PF Pulled up to 5V with 100KΩ Resistor 0.05 mA
PFVOL Opendrain pulldown voltage 500uA pullup 0.2 V
PG Power Good Indication VLDO_OUT Rising 90.16 92 93.84 %VLDO_OUT
PG Hysteresis 2 %
PG Open Drain Leakage 50 nA
PGVOL Opendrain pulldown voltage 500uA pullup 0.2 V
IPG Power Good Sink Current PG Pulled up to 5V with 100KΩ Resistor 0.05 mA
TSD Thermal shutdown Temperature rising 162 ºC
Temperature falling 135