ZHCSLD2E may   2020  – july 2023 UCC28782

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 描述
  5. 4 Revision History
  6. 5 Device Comparison Table
  7. 6 Pin Configuration and Functions
    1.     Pin Functions
  8. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Typical Characteristics
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Detailed Pin Description
      1. 8.3.1  BUR Pin (Programmable Burst Mode)
      2. 8.3.2  FB Pin (Feedback Pin)
      3. 8.3.3  REF Pin (Internal 5-V Bias)
      4. 8.3.4  VDD Pin (Device Bias Supply)
      5. 8.3.5  P13 and SWS Pins
      6. 8.3.6  S13 Pin
      7. 8.3.7  IPC Pin (Intelligent Power Control Pin)
      8. 8.3.8  RUN Pin (Driver and Bias Source for Isolator)
      9. 8.3.9  PWMH and AGND Pins
      10. 8.3.10 PWML and PGND Pins
      11. 8.3.11 SET Pin
      12. 8.3.12 RTZ Pin (Sets Delay for Transition Time to Zero)
      13. 8.3.13 RDM Pin (Sets Synthesized Demagnetization Time for ZVS Tuning)
      14. 8.3.14 BIN, BSW, and BGND Pins
      15. 8.3.15 XCD Pin
      16. 8.3.16 CS, VS, and FLT Pins
    4. 8.4 Device Functional Modes
      1. 8.4.1  Adaptive ZVS Control with Auto-Tuning
      2. 8.4.2  Dead-Time Optimization
      3. 8.4.3  EMI Dither and Dither Fading Function
      4. 8.4.4  Control Law across Entire Load Range
      5. 8.4.5  Adaptive Amplitude Modulation (AAM)
      6. 8.4.6  Adaptive Burst Mode (ABM)
      7. 8.4.7  Low Power Mode (LPM)
      8. 8.4.8  First Standby Power Mode (SBP1)
      9. 8.4.9  Second Standby Power Mode (SBP2)
      10. 8.4.10 Startup Sequence
      11. 8.4.11 Survival Mode of VDD (INT_STOP)
      12. 8.4.12 Capacitor Voltage Balancing Function
      13. 8.4.13 Device Functional Modes for Bias Regulator Control
        1. 8.4.13.1 Mitigation of Switching Interaction with ACF Converter
        2. 8.4.13.2 Protection Functions for the Bias Regulator
        3. 8.4.13.3 BIN-Pin Related Protections
        4. 8.4.13.4 BSW-Pin Related Protections
      14. 8.4.14 System Fault Protections
        1. 8.4.14.1  Brown-In and Brown-Out
        2. 8.4.14.2  Output Over-Voltage Protection (OVP)
        3. 8.4.14.3  Input Over Voltage Protection (IOVP)
        4. 8.4.14.4  Over-Temperature Protection (OTP) on FLT Pin
        5. 8.4.14.5  Over-Temperature Protection (OTP) on CS Pin
        6. 8.4.14.6  Programmable Over-Power Protection (OPP)
        7. 8.4.14.7  Peak Power Limit (PPL)
        8. 8.4.14.8  Output Short-Circuit Protection (SCP)
        9. 8.4.14.9  Over-Current Protection (OCP)
        10. 8.4.14.10 External Shutdown
        11. 8.4.14.11 Internal Thermal Shutdown
      15. 8.4.15 Pin Open/Short Protections
        1. 8.4.15.1 Protections on CS pin Fault
        2. 8.4.15.2 Protections on P13 pin Fault
        3. 8.4.15.3 Protections on RDM and RTZ pin Faults
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application Circuit
      1. 9.2.1 Design Requirements for a 65-W USB-PD Adapter Application
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Input Bulk Capacitance and Minimum Bulk Voltage
        2. 9.2.2.2 Transformer Calculations
          1. 9.2.2.2.1 Primary-to-Secondary Turns Ratio (NPS)
          2. 9.2.2.2.2 Primary Magnetizing Inductance (LM)
          3. 9.2.2.2.3 Primary Winding Turns (NP)
          4. 9.2.2.2.4 Secondary Winding Turns (NS)
          5. 9.2.2.2.5 Auxiliary Winding Turns (NA)
          6. 9.2.2.2.6 Winding and Magnetic Core Materials
        3. 9.2.2.3 Clamp Capacitor Calculation
          1. 9.2.2.3.1 Primary-Resonance ACF
          2. 9.2.2.3.2 Secondary-Resonance ACF
        4. 9.2.2.4 Bleed-Resistor Calculation
        5. 9.2.2.5 Output Filter Calculation
        6. 9.2.2.6 Calculation of ZVS Sensing Network
        7. 9.2.2.7 Calculation of BUR Pin Resistances
        8. 9.2.2.8 Calculation of Compensation Network
      3. 9.2.3 Application Curves
  11. 10Power Supply Recommendations
  12. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1  General Considerations
      2. 11.1.2  RDM and RTZ Pins
      3. 11.1.3  SWS Pin
      4. 11.1.4  VS Pin
      5. 11.1.5  BUR Pin
      6. 11.1.6  FB Pin
      7. 11.1.7  CS Pin
      8. 11.1.8  BIN Pin
      9. 11.1.9  BSW Pin
      10. 11.1.10 AGND Pin
      11. 11.1.11 BGND Pin
      12. 11.1.12 PGND Pin
      13. 11.1.13 EP Thermal Pad
    2. 11.2 Layout Example
  13. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 支持资源
    4. 12.4 Trademarks
    5. 12.5 静电放电警告
    6. 12.6 术语表
  14. 13Mechanical, Packaging, and Orderable Information

9.2.1 Design Requirements for a 65-W USB-PD Adapter Application

Table 9-1 UCC28782 Electrical Performance Specifications for GaN FET(1)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
INPUT CHARACTERISTICS
VIN Input line voltage (RMS) 90 115 / 230 264 V
fLINE Input line frequency 47 50 / 60 63 Hz
PSTBY Input power at no-load,
VO = 5 V		 VIN = 230 VRMS, IO = 0 A 55 70 mW
VIN = 115 VRMS, IO = 0 A 45 70 mW
P0.25W Input power at 0.25-W load,
VO = 20 V		 VIN = 230 VRMS, PO = 250 mW 399 470 mW
VIN = 115 VRMS, PO = 250 mW 359 470 mW
OUTPUT CHARACTERISTICS
VO Output voltage, 20-V setting VIN = 90 to 264 VRMS, IO = 0 A to 3.25 A 19.95 V
Output voltage, 15-V setting VIN = 90 to 264 VRMS, IO = 0 A to 3 A 15.06
Output voltage, 9-V setting VIN = 90 to 264 VRMS, IO = 0 A to 3 A 9.05
Output voltage, 5-V setting VIN = 90 to 264 VRMS, IO = 0 A to 3 A 5.05
IO(FL) Full-load rated output current,
20-V setting		 VIN = 90 to 264 VRMS, VO = 20 V 3.25 A
IO(FL2) Full-load rated output current,
15-V, 9-V, 5-V settings		 VIN = 90 to 264 VRMS, VO = 15 V, 9 V, 5V 3.00 A
VO_pp Output ripple voltage, peak to peak
20-V setting		 VIN = 90 to 264 VRMS, IO = 0 A to 3.25 A 150 600 mVpp
Output ripple voltage, peak to peak
15-V setting		 VIN = 90 to 264 VRMS, IO = 0 A to 3 A 150 450
Output ripple voltage, peak to peak
9-V setting		 VIN = 90 to 264 VRMS, IO = 0 A to 3 A 150 300
Output ripple voltage, peak to peak
5-V setting		 VIN = 90 to 264 VRMS, IO = 0 A to 3 A 150 200
PO(OPP) Over-power protection threshold VIN = 90 to 264 VRMS 70 W
tOPP Over-power protection duration VIN = 90 to 264 VRMS, PO > PO(OPP) 160 ms
ΔVO Output voltage deviation during step-load transient VO = 20 V, IO step between 0 A to IO(FL) at 100 Hz -604 / +340 ±1000 mVpp
SYSTEM CHARACTERISTICS
ηFL_20 Full-load efficiency(3),
VO = 20 V		 VIN = 230 VRMS, IO = 3.25 A 94% 94.2%
VIN = 115 VRMS, IO = 3.25 A 94% 94.2%
VIN = 90 VRMS, IO = 3.25 A 93% 93.3%
ηavg_20 4-point average efficiency(2),
VO = 20 V		 VIN = 230 VRMS 89% 93.4%
VIN = 115 VRMS 89% 92.4%
η10%_20 Efficiency at 10% load,
VO = 20 V		 VIN = 230 VRMS, IO = 10% of IO(FL) 79% 83.8%
VIN = 115 VRMS, IO = 10% of IO(FL) 79% 89.0%
TAMB Ambient operating temperature range VIN = 90 to 264 VRMS, VO = 20 V, IO = 0 to 3.25 A 25°C
(1) The performance listed in this table is achieved using secondary-resonance and based on the test results from a single board.
(2) Average efficiency of four load points, IO = 100%, 75%, 50%, and 25% of IO(FL).
(3) Power loss from external cable is not included in efficiency results.