SLVSHC8 May   2023 DRV8334-Q1

PRODMIX  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
    1. 4.1 Pin Functions 48-Pin DRV8334-Q1
  6. 5 Specification
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings Auto
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Timing Requirements
    7. 5.7 SPI Timing Diagrams
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Three BLDC Gate Drivers
        1. 6.3.1.1 PWM Control Modes
          1. 6.3.1.1.1 6x PWM Mode
          2. 6.3.1.1.2 3x PWM Mode with INLx enable control
          3. 6.3.1.1.3 3x PWM Mode with SPI enable control
          4. 6.3.1.1.4 1x PWM Mode
          5. 6.3.1.1.5 SPI Gate Drive Mode
        2. 6.3.1.2 Gate Drive Architecture
          1. 6.3.1.2.1 Bootstrap diode
          2. 6.3.1.2.2 GVDD Charge pump/LDO
          3. 6.3.1.2.3 VCP Trickle Charge pump
          4. 6.3.1.2.4 Gate Driver Output
          5. 6.3.1.2.5 Passive and Semi-active pull-down resistor
          6. 6.3.1.2.6 TDRIVE Gate Drive Timing Control
          7. 6.3.1.2.7 Propagation Delay
          8. 6.3.1.2.8 Deadtime and Cross-Conduction Prevention
      2. 6.3.2 Low-Side Current Sense Amplifiers
        1. 6.3.2.1 Unidirectional Current Sense Operation
        2. 6.3.2.2 Bidirectional Current Sense Operation
      3. 6.3.3 Gate Driver Shutdown
        1. 6.3.3.1 DRVOFF Gate Driver Shutdown
        2. 6.3.3.2 Gate Driver Shutdown Timing Sequence
      4. 6.3.4 Gate Driver Protective Circuits
        1. 6.3.4.1  PVDD Supply Undervoltage Warning (PVDD_UVW)
        2. 6.3.4.2  PVDD Supply Undervoltage Lockout (PVDD_UV)
        3. 6.3.4.3  PVDD Supply Overvoltage Fault (PVDD_OV)
        4. 6.3.4.4  GVDD Undervoltage Lockout (GVDD_UV)
        5. 6.3.4.5  GVDD Overvoltage Fault (GVDD_OV)
        6. 6.3.4.6  BST Undervoltage Lockout (BST_UV)
        7. 6.3.4.7  BST Overvoltage Fault (BST_OV)
        8. 6.3.4.8  VCP Undervoltage Fault (CP_OV)
        9. 6.3.4.9  VCP Overvoltage Fault (CP_OV)
        10. 6.3.4.10 VDRAIN Undervoltage Fault (VDRAIN_UV)
        11. 6.3.4.11 VDRAIN Overvoltage Fault (VDRAIN_OV)
        12. 6.3.4.12 MOSFET VGS Monitoring Protection
        13. 6.3.4.13 MOSFET VDS Overcurrent Protection (VDS_OCP)
        14. 6.3.4.14 VSENSE Overcurrent Protection (SEN_OCP)
        15. 6.3.4.15 Phase Comparators
        16. 6.3.4.16 Thermal Shutdown (OTSD)
        17. 6.3.4.17 Thermal Warning (OTW)
        18. 6.3.4.18 OTP CRC
        19. 6.3.4.19 SPI Watchdog Timer
        20. 6.3.4.20 Phase Diagnostic
    4. 6.4 Device Functional Modes
      1. 6.4.1 Gate Driver Functional Modes
        1. 6.4.1.1 Sleep Mode
        2. 6.4.1.2 Operating Mode
      2. 6.4.2 Device Power Up Sequence
    5. 6.5 Programming
      1. 6.5.1 SPI
      2. 6.5.2 SPI Format
      3. 6.5.3 SPI Format Diagrams
  8. 7 Register Maps
    1. 7.1 STATUS Registers
    2. 7.2 CONTROL Registers
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Typical Application with 48-pin package
        1. 8.2.1.1 External Components
      2. 8.2.2 Application Curves
    3. 8.3 Layout
      1. 8.3.1 Layout Guidelines
      2. 8.3.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Community Resources
    4. 9.4 Trademarks
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

8.2.1.1 External Components

External components lists the recommended external components. Note that the capacitances below are considered effective capacitances under nominal conditions. Consider the impact of DC derating when selecting these components.

Table 8-1 External Components (48-pin Package)
COMPONENT PIN1 PIN2 RECOMMENDED
RPVDD VBAT PVDD OPTIONAL: 1Ω (or smaller) series resistor
CPVDD PVDD GND 10μF ceramic capacitor rated for PVDD.
CGVDD GVDD GND 10μF ceramic capacitor rated for GVDD.
CCP_FLY CPH CPL 1.0μF ceramic capacitor rated for GVDD voltage
CCPT_FLY CPTH CPTL 1.0μF ceramic capacitor rated for GVDD voltage
CVCP VCP VDRAIN 1.0μF ceramic capacitor rated for VCP voltage
RnFAULT VCCIO nFAULT 10kΩ pulled up the MCU I/O power supply
CVREF VREF GND 0.1μF ceramic capacitor rated for VREF
CBULK VMOTOR GND 100μF - 1000μF rated for VMOTOR; Depending on system configuration
CVDRAIN VDRAIN GND 1μF rated for VDRAIN
CBST BSTx SHx 1.0μF, 20V ceramic capacitor between BSTx and SHx depending on the total gate charge of external MOSFET Qg. CBST > 20 X Qg / (VGHX-VSHx)
RBST BSTx SHx OPTIONAL: 2Ω series resistor between BSTx and SHx to help prevent CBST from being overcharged if big negative transient voltage is observed on SHx pin.
RG GHx, GLx Gate of external MOSFET OPTIONAL: 3Ω series resistor between GHx/GLx and Gate of external MOSFET.
RGS GHx, GLx Source of external MOSFET 100kΩ pull down resistor between GHx/GLx and Source of external MOSFET.
RSENSE SPx SNx 0.5mΩ Shunt resistor for current sense amplifier. System design parameter.
RSO MCU ADC SOx 160Ω for current sense amplifier output filter
CSO MCU ADC GND 470pF ceramic capacitor rated for AREF for current sense amplifier output filter
RSP, RSN SPx/SNx RSENSE OPTIONAL: 10Ω for current sense amplifier input filter.
CSPSN SPx SNx OPTIONAL: 1nF ceramic capacitor for current sense amplifier input filter.
CSP, CSN SPx/SNx GND OPTIONAL: 1nF ceramic capacitor for current sense amplifier input filter.