SLVSET1 August   2018 DRV8873

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Simplified Schematic
  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 SPI Timing Requirements
    7. 6.7 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Bridge Control
        1. 7.3.1.1 Control Modes
        2. 7.3.1.2 Half-Bridge Operation
        3. 7.3.1.3 Internal Current Sense and Current Regulation
        4. 7.3.1.4 Slew-Rate Control
        5. 7.3.1.5 Dead Time
        6. 7.3.1.6 Propagation Delay
        7. 7.3.1.7 nFAULT Pin
        8. 7.3.1.8 nSLEEP as SDO Reference
      2. 7.3.2 Motor Driver Protection Circuits
        1. 7.3.2.1 VM Undervoltage Lockout (UVLO)
        2. 7.3.2.2 VCP Undervoltage Lockout (CPUV)
        3. 7.3.2.3 Overcurrent Protection (OCP)
          1. 7.3.2.3.1 Latched Shutdown (OCP_MODE = 00b)
          2. 7.3.2.3.2 Automatic Retry (OCP_MODE = 01b)
          3. 7.3.2.3.3 Report Only (OCP_MODE = 10b)
          4. 7.3.2.3.4 Disabled (OCP_MODE = 11b)
        4. 7.3.2.4 Open-Load Detection (OLD)
          1. 7.3.2.4.1 Open-Load Detection in Passive Mode (OLP)
          2. 7.3.2.4.2 Open-Load Detection in Active Mode (OLA)
        5. 7.3.2.5 Thermal Shutdown (TSD)
          1. 7.3.2.5.1 Latched Shutdown (TSD_MODE = 0b)
          2. 7.3.2.5.2 Automatic Recovery (TSD_MODE = 1b)
        6. 7.3.2.6 Thermal Warning (OTW)
      3. 7.3.3 Hardware Interface
        1. 7.3.3.1 MODE (Tri-Level Input)
        2. 7.3.3.2 Slew Rate
    4. 7.4 Device Functional Modes
      1. 7.4.1 Motor Driver Functional Modes
        1. 7.4.1.1 Sleep Mode (nSLEEP = 0)
        2. 7.4.1.2 Disable Mode (nSLEEP = 1, DISABLE = 1)
        3. 7.4.1.3 Operating Mode (nSLEEP = 1, DISABLE = 0)
        4. 7.4.1.4 nSLEEP Reset Pulse
    5. 7.5 Programming
      1. 7.5.1 Serial Peripheral Interface (SPI) Communication
        1. 7.5.1.1 SPI Format
        2. 7.5.1.2 SPI for a Single Slave Device
        3. 7.5.1.3 SPI for Multiple Slave Devices in Parallel Configuration
        4. 7.5.1.4 SPI for Multiple Slave Devices in Daisy Chain Configuration
    6. 7.6 Register Maps
      1. 7.6.1 Status Registers
        1. 7.6.1.1 FAULT Status Register Name (address = 0x00)
          1. Table 21. FAULT Status Register Field Descriptions
        2. 7.6.1.2 DIAG Status Register Name (address = 0x01)
          1. Table 22. DIAG Status Register Field Descriptions
      2. 7.6.2 Control Registers
        1. 7.6.2.1 IC1 Control Register (address = 0x02)
          1. Table 24. IC1 Control Register Field Descriptions
        2. 7.6.2.2 IC2 Control Register (address = 0x03)
          1. Table 25. IC2 Control Register Field Descriptions
        3. 7.6.2.3 IC3 Control Register (address = 0x04)
          1. Table 26. IC3 Control Register Field Descriptions
        4. 7.6.2.4 IC4 Control Register (address = 0x05)
          1. Table 27. IC4 Control Register Field Descriptions
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
        1. 8.2.1.1 Motor Voltage
        2. 8.2.1.2 Drive Current and Power Dissipation
        3. 8.2.1.3 Sense Resistor
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Thermal Considerations
        2. 8.2.2.2 Heatsinking
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
    1. 9.1 Bulk Capacitance Sizing
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information
    1. 12.1 Package Option Addendum
      1. 12.1.1 Packaging Information
      2. 12.1.2 Tape and Reel Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

5 Pin Configuration and Functions

DRV8873H PWP PowerPAD Package
24-Pin HTSSOP
Top View
DRV8873S PWP PowerPAD Package
24-Pin HTSSOP
Top View

Pin Functions

PIN TYPE(1) DESCRIPTION
NAME NO.
DRV8873H DRV8873S
CPH 22 22 PWR Charge pump switching node. Connect a X7R capacitor with a value of 47 nF between the CPH and CPL pins.
CPL 23 23 PWR Charge pump switching node. Connect a X7R capacitor with a value of 47 nF between the CPH and CPL pins.
DVDD 1 1 PWR Digital regulator. This pin is the 5-V internal digital-supply regulator. Bypass this pin to GND with a 6.3-V, 1-µF ceramic capacitor.
EN/IN1 7 7 I Control Inputs. For details, see the Control Modes section. This pin has an internal pulldown resistor to GND.
DISABLE 9 9 I Bridge disable input. A logic high on this pin disables the H-bridge Hi-Z. Internal pullup to DVDD.
GND 24 24 PWR Ground pin
IPROPI1 10 10 O High-side FET current. The analog current proportional to the current flowing in the half bridge.
IPROPI2 12 12 O High-side FET current. The analog current proportional to the current flowing in the half bridge.
nITRIP 5 — I Internal current-regulation control pin (ITRIP). To enable the ITRIP feature, do not connect this pin (or tie it to GND). To disable the ITRIP feature, connect this pin to the DVDD pin.
nOL 6 — I Open-load diagnostic control pin. To run the open-load diagnostic at power up, tie it to ground. Connect it to DVDD, open-load diagnostic will be disabled.
MODE 3 — I Input mode pin. Sets the PH/EN, PWM, or independent-PWM mode.
OUT1 18 18 O Half-bridge output 1. Connect this pin to the motor or load.
OUT1 19 19 O Half-bridge output 1. Connect this pin to the motor or load.
OUT2 14 14 O Half-bridge output 2. Connect this pin to the motor or load.
OUT2 15 15 O Half-bridge output 2. Connect this pin to the motor or load.
PH/IN2 8 8 I Control inputs. For details, see the Control Modes section. This pin has an internal pulldown resistor to GND.
SCLK — 5 I Serial clock input. Serial data is shifted out and captured on the corresponding rising and falling edge on this pin.
SDI — 4 I Serial data input. Data is captured on the falling edge of the SCLK pin.
SDO — 3 PP Serial data output. Data is shifted out on the rising edge of the SCLK pin. This is a push-pull output.
SR 4 — I Slew rate adjust. This pin sets the slew rate of the H-bridge outputs.
SRC 16 16 O Power FET source. Tie this pin to GND through a low-impedance path.
SRC 17 17 O Power FET source. Tie this pin to GND through a low-impedance path.
VCP 21 21 PWR Charge pump output. Connect a 16-V, 1-µF ceramic capacitor from this pin to the VM supply.
VM 13 13 PWR Power supply. This pin is the motor supply voltage. Bypass this pin to GND with a 0.1-µF ceramic capacitor and a bulk capacitor.
VM 20 20 PWR Power supply. This pin is the motor supply voltage. Bypass this pin to GND with a 0.1-µF ceramic capacitor and a bulk capacitor.
nFAULT 2 2 OD Fault indication pin. This pin is pulled logic low with a fault condition. This open-drain output requires an external pullup resistor.
nSCS — 6 I Serial chip select. An active low on this pin enables the serial interface communications. Internal pullup to nSLEEP.
nSLEEP 11 11 I Sleep input. To enter a low-power sleep mode, set this pin logic low.
(1) I = input, O = output, PWR = power, NC = no connect, OD = open-drain output, PP = push-pull output