SNOSD81B September   2018  – January 2020

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Simplified Block Diagram
      2.      Switching Performance at >100 V/ns
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin Functions
  6. 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 Switching Characteristics
    7. 6.7 Typical Characteristics
  7. 7 Parameter Measurement Information
    1. 7.1 Switching Parameters
      1. 7.1.1 Turn-on Delays
      2. 7.1.2 Turn-off Delays
      3. 7.1.3 Drain Slew Rate
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Direct-Drive GaN Architecture
      2. 8.3.2 Internal Buck-Boost DC-DC Converter
      3. 8.3.3 Internal Auxiliary LDO
      4. 8.3.4 Start Up Sequence
      5. 8.3.5 R-C Decoupling for IN pin
      6. 8.3.6 Low Power Mode
      7. 8.3.7 Fault Detection
        1. 8.3.7.1 Over-current Protection
        2. 8.3.7.2 Over-Temperature Protection and UVLO
      8. 8.3.8 Drive Strength Adjustment
    4. 8.4 Safe Operation Area (SOA)
      1. 8.4.1 Repetitive SOA
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Slew Rate Selection
          1. 9.2.2.1.1 Startup and Slew Rate with Bootstrap High-Side Supply
        2. 9.2.2.2 Signal Level-Shifting
        3. 9.2.2.3 Buck-Boost Converter Design
    3. 9.3 Do's and Don'ts
  10. 10Power Supply Recommendations
    1. 10.1 Using an Isolated Power Supply
    2. 10.2 Using a Bootstrap Diode
      1. 10.2.1 Diode Selection
      2. 10.2.2 Managing the Bootstrap Voltage
      3. 10.2.3 Reliable Bootstrap Start-up
  11. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1 Power Loop Inductance
      2. 11.1.2 Signal Ground Connection
      3. 11.1.3 Bypass Capacitors
      4. 11.1.4 Switch-Node Capacitance
      5. 11.1.5 Signal Integrity
      6. 11.1.6 High-Voltage Spacing
      7. 11.1.7 Thermal Recommendations
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Third-Party Products Disclaimer
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 Receiving Notification of Documentation Updates
    4. 12.4 Community Resources
    5. 12.5 Trademarks
    6. 12.6 Electrostatic Discharge Caution
    7. 12.7 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

6.5 Electrical Characteristics

at Tj = 25 °C, 9.5 V < VDD < 18 V, LPM = 5 V, VNEG = -14 V (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
GaN POWER TRANSISTOR
RDS,ON On-state Resistance TJ = 25°C 57 mΩ
TJ = 125°C 100
VSD Third-quadrant mode source-drain voltage IN = 0 V, ISD = 0.1 A 3.95 V
IN = 0 V, ISD = 10 A 5.27
Coss GaN output capacitance IN = 0 V, VDS = 400 V, fSW = 250 kHz 89 pF
Coss,er Effective output capacitance, energy related IN = 0 V, VDS =0-400 V 119 pF
Coss,tr Effective output capacitance, time related ID = 5 A, IN = 0 V, VDS = 0-400 V 181 pF
Qrr Reverse recovery charge VR = 400 V, ISD = 5 A, dISD/dt = 1 A/ns 0 nC
IDSS Drain leakage current Vds=600V, TJ = 25°C 1 uA
IDSS Drain leakage current Vds=600V, TJ = 125°C 10 uA
DRIVER SUPPLY
IVDD,LPM Quiescent current, ultra-low-power mode VLPM = 0 V, VDD = 12 V 60 95 µA
IVDD,Q Quiescent current (average) Transistor held off; RDRV=40 kΩ 0.5 mA
transistor held on;RDRV=40 kΩ 0.5
IVDD,op Operating current VDD = 12 V, fSW = 500 KHz, RDRV=40 kΩ, 50% duty cycle 23 mA
V+5V 5V LDO output voltage VDD = 12 V 4.7 5.3 V
VNEG Negative Supply 20-mA load current -13.9 V
BUCK BOOST CONVERTER
IDCDC,PK Peak inductor current IOUT = 20 mA, VIN = 12 V, VOUT = -14 V 300 450 mA
ΔVNEG DC-DC output ripple voltage, pk-pk CNEG = 2.2 µF, IOUT = 20 mA 40 mV
DRIVER INPUT
VIH Input pin, LPM pin, logic high threshold 2.5 V
VIL Input pin, LPM pin, low threshold 0.8 V
VHYST Input pin, LPM pin, hysteresis 0.8 V
RIN,L Input pull-down resistance 150 kΩ
RLPM LPM pin pull-down resistance 150 kΩ
UNDERVOLTAGE LOCKOUT
VDD,(ON) VDD turnon threshold Turn-on voltage 9.1 V
VDD,(OFF) VDD turnoff threshold Turn-off voltage 8.5 V
ΔVDD,UVLO UVLO Hysteresis 550 mV
FAULT
Itrip Current Fault Trip Point 40.4 54 77.6 A
Ttrip Temperature Trip Point trip point 165 °C
TtripHys Temperature Trip Hysteresis 25 °C