SLVSH22A May   2024  – September 2025 DRV8000-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings Auto
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information RGZ package
    5. 6.5 Electrical Characteristics
    6. 6.6 Timing Requirements
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 External Components
    4. 7.4 Feature Description
      1. 7.4.1 Heater MOSFET Driver
        1. 7.4.1.1 Heater MOSFET Driver Control
        2. 7.4.1.2 Heater MOSFET Driver Protection
          1. 7.4.1.2.1 Heater SH_HS Internal Diode
          2. 7.4.1.2.2 Heater MOSFET VDS Overcurrent Protection (HEAT_VDS)
          3. 7.4.1.2.3 Heater MOSFET Open Load Detection
      2. 7.4.2 High-Side Drivers
        1. 7.4.2.1 High-side Driver Control
          1. 7.4.2.1.1 High-side Driver PWM Generator
          2. 7.4.2.1.2 Constant Current Mode
          3. 7.4.2.1.3 OUTx HS ITRIP Behavior
          4. 7.4.2.1.4 High-side Drivers - Parallel Outputs
        2. 7.4.2.2 High-side Driver Protection Circuits
          1. 7.4.2.2.1 High-side Drivers Internal Diode
          2. 7.4.2.2.2 High-side Driver Short-circuit Protection
          3. 7.4.2.2.3 High-side Driver Overcurrent Protection
          4. 7.4.2.2.4 High-side Driver Open Load Detection
      3. 7.4.3 Electrochromic Glass Driver
        1. 7.4.3.1 Electrochromic Driver Control
        2. 7.4.3.2 Electrochromic Driver Protection
      4. 7.4.4 Half-bridge Drivers
        1. 7.4.4.1 Half-bridge Control
        2. 7.4.4.2 OUT1 and OUT2 High-side Driver Mode
        3. 7.4.4.3 Half-bridge Register Control
        4. 7.4.4.4 Half-Bridge ITRIP Regulation
        5. 7.4.4.5 Half-bridge Protection and Diagnostics
          1. 7.4.4.5.1 Half-Bridge Off-State Diagnostics (OLP)
          2. 7.4.4.5.2 Half-bridge Open Load Detection
          3. 7.4.4.5.3 Half-Bridge Overcurrent Protection
      5. 7.4.5 Gate Drivers
        1. 7.4.5.1 Input PWM Modes
          1. 7.4.5.1.1 Half-Bridge Control
          2. 7.4.5.1.2 H-Bridge Control
          3. 7.4.5.1.3 DRVOFF - Gate Driver Shutoff Pin
        2. 7.4.5.2 Smart Gate Driver - Functional Block Diagram
          1. 7.4.5.2.1  Smart Gate Driver
          2. 7.4.5.2.2  Functional Block Diagram
          3. 7.4.5.2.3  Slew Rate Control (IDRIVE)
          4. 7.4.5.2.4  Gate Driver State Machine (TDRIVE)
            1. 7.4.5.2.4.1 tDRIVE Calculation Example
          5. 7.4.5.2.5  Propagation Delay Reduction (PDR)
          6. 7.4.5.2.6  PDR Pre-Charge/Pre-Discharge Control Loop Operation Details
          7. 7.4.5.2.7  PDR Post-Charge/Post-Discharge Control Loop Operation Details
            1. 7.4.5.2.7.1 PDR Post-Charge/Post-Discharge Setup
          8. 7.4.5.2.8  Detecting Drive and Freewheel MOSFET
          9. 7.4.5.2.9  Automatic Duty Cycle Compensation (DCC)
          10. 7.4.5.2.10 Closed Loop Slew Time Control (STC)
            1. 7.4.5.2.10.1 STC Control Loop Setup
        3. 7.4.5.3 Tripler (Double-Stage) Charge Pump
        4. 7.4.5.4 Wide Common Mode Differential Current Shunt Amplifier
        5. 7.4.5.5 Gate Driver Protection Circuits
          1. 7.4.5.5.1 MOSFET VDS Overcurrent Protection (VDS_OCP)
          2. 7.4.5.5.2 Gate Driver Fault (VGS_GDF)
          3. 7.4.5.5.3 Offline Short-circuit and Open Load Detection (OOL and OSC)
      6. 7.4.6 Sense Output (IPROPI)
      7. 7.4.7 Protection Circuits
        1. 7.4.7.1 Fault Reset (CLR_FLT)
        2. 7.4.7.2 DVDD Logic Supply Power on Reset (DVDD_POR)
        3. 7.4.7.3 PVDD Supply Undervoltage Monitor (PVDD_UV)
        4. 7.4.7.4 PVDD Supply Overvoltage Monitor (PVDD_OV)
        5. 7.4.7.5 VCP Charge Pump Undervoltage Lockout (VCP_UV)
        6. 7.4.7.6 Thermal Clusters
        7. 7.4.7.7 Watchdog Timer
        8. 7.4.7.8 Fault Detection and Response Summary Table
    5. 7.5 Programming
      1. 7.5.1 Serial Peripheral Interface (SPI)
      2. 7.5.2 SPI Format
      3. 7.5.3 Timing Diagrams
  9. 8  DRV8000-Q1 Register Map
    1. 8.1 DRV8000-Q1_STATUS Registers
    2. 8.2 DRV8000-Q1_CNFG Registers
    3. 8.3 DRV8000-Q1_CTRL Registers
  10. 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 IDRIVE Calculation Example
        2. 9.2.2.2 tDRIVE Calculation Example
        3. 9.2.2.3 Maximum PWM Switching Frequency
        4. 9.2.2.4 Current Shunt Amplifier Configuration
    3. 9.3 Initialization Setup
    4. 9.4 Power Supply Recommendations
      1. 9.4.1 Bulk Capacitance Sizing
    5. 9.5 Layout
      1. 9.5.1 Layout Guidelines
      2. 9.5.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Receiving Notification of Documentation Updates
    2. 10.2 Support Resources
    3. 10.3 Trademarks
    4. 10.4 Electrostatic Discharge Caution
    5. 10.5 Glossary
  12. 11Pre-Production Revision History
  13. 12Mechanical, Packaging, and Orderable Information
    1. 12.1 Package Option Addendum
    2. 12.2 Tape and Reel Information

7.4.6 Sense Output (IPROPI)

The device features an output for current sensing, VPVDD monitoring, and die temperature on the IPROPI pin. This information can be used for status or regulation of loads (on OUTx), check die temperature, or to provide local motor suppy voltage. These integrated features eliminate the need for multiple external sense resistors or sense circuitry, reducing system size, cost and complexity.

The load currents are sensed by using a shunt-less high-side current mirror topology. The IPROPI output current is a fixed ratio AIPROPI of the instantaneous current of the enabled driver (OUTx). The thermal cluster outputs come from the corresponding zones temperature sensing circuits. The local motor supply PVDD sense and temperature sense is converted to a current output on IPROPI pin through the IPROPI resistor allowing scalable output voltage for 5V and 3.3V ADC pins.

For any IPROPI sense output, the maximum value of the selected scale (load current, voltage, or temperature) is represented by the maximum IPROPI output current of 2mA. For example, if OUT5 IPROPI is selected while driving an 8A load (the minimum driver OCP), the expected IPROPI output current is 2mA. If the load current is slightly higher than the minimum driver OCP, the IPROPI output current cannot be verified to follow the IPROPI current sense ratio, and in some cases OCP shutdown can occur.

Bit IPROPI_SEL defines which of the outputs is multiplexed to the IPROPI pin, the control values shown in the table below:

Table 7-44 IPROPI_SEL Options
IPROPI_SEL Output
00000b No output
00001b OUT1 Current Sense
00010b OUT2 Current Sense
00011b OUT3 Current Sense
00100b OUT4 Current Sense
00101b OUT5 Current Sense
00110b OUT6 Current Sense
00111b OUT7 Current Sense
01000b OUT8 Current Sense
01001b OUT9 Current Sense
01010b OUT10 Current Sense
01011b OUT11 Current Sense
01100b OUT12 Current Sense
01101b RSVD
01110b RSVD
01111b RSVD
10000b VPVDD Sense Nominal Range (5V - 22V)
10001b Thermal Cluster 1
10010 Thermal Cluster 2
10011 Thermal Cluster 3
10100 Thermal Cluster 4
10101 VPVDD Sense High Range (20V - 32V)

The IPROPI pin is a multipurpose pin which can also be used as second PWM pin control input option for half-bridges, therefore the IPROPI/PWM2 pin mode is controlled with bit IPROPI_MODE in register IC_CTRL.

The diagram below shows the simple block diagram for the selectable IPROPI output:

DRV8000-Q1 IPROPI Output Circuit Figure 7-32 IPROPI Output Circuit

IPROPI Reset, Blank and Settling Times: When selecting between IPROPI output options from the above table, using the IPROPI_SEL bit, the IPROPI output first resets to 0V within 5.5μs. This reset occurs for any IPROPI output selection or transition. To prevent false readouts, the signal on IPROPI is blanked after switching on any driver or sense output until the circuitry settles, roughly 60μs for High-side driver.

Current (IOUTx) Sense: For current output, the IPROPI output analog current is scaled by AIPROPI as follows:

Equation 3. IIPROPI = IOUTX / AIPROPI

PVDD Sense: For PVDD voltage sense output, there are two ranges:

  • Nominal Range: 5V - 22V, where IPROPI output current is VPVDD/11,000
  • High Range: 20V - 32V, where IPROPI output current is VPVDD/16,500

For example:

  • IPROPI_SEL is selected for Nominal PVDD Range 1 (IPROPI_SEL = 10000b)
  • VPVDD is 13.5V
  • IIPROPI = 1.2mA

PVDD Sense Fault Behavior: The IPROPI PVDD voltage sense output is valid and available when VPVDD is above the PVDD UV threshold, and when VDVDD is above the minimum recommended operating voltage.

If VPVDD is above the PVDD OV threshold, PVDD sense output is still supported. However, the nominal range (5V-22V) IPROPI PVDD sense output cannot be verified above VPVDD > 22V. The High range IPROPI PVDD sense output ratio of 1/16,500 is valid within 20V to 32V, but cannot be verified above VPVDD of 32V.

The faults where PVDD sense is unavailable:

  • Charge Pump Undervoltage (VCP_UV)
  • Thermal Shutdown when configured for global shutdown (default)

Temperature Sense Output: The IPROPI output also provides current representation of any single of the four thermal cluster temperature. This is intended for use in testing and evaluation, but not during device run-time.

The maximum internal temperature at which IPROPI output current is available is 195°C, at which point the IPROPI output current is 1.94mA. The IPROPI current output is scaled according to the temperature range -40°C to 195°C. The equation for the IPROPI output current is:

IIPROPI = α + β×t

where α is offset roughly equal to 1.49mA, β is 2.32μA/°C, and 't' is temperature. To convert back to temperature, solving for temperature yields:

t = (IIPROPI - α)/β

In terms of the voltage generated on RIPROPI:

t = ([VIPROPI/RIPROPI] - α)/β

For example, when the cluster temperature is 0°C, the IPROPI output current is 1.49mA. At 145°C, the IPROPI output current is 1.83mA.

The IPROPI pin must connect to ground through an external resistor (RIPROPI) generate the proportional voltage VIPROPI. This allows for the IPROPI current to be measured as a voltage-drop across the RIPROPI resistor in the application so that the full range of the controller ADC is utilized.

When selecting the IPROPI resistance value, note the maximum operating IPROPI output voltage of 4.7V. This value considers a 10% output error of IPROPI drives the IPROPI output voltage to 5.3V at a maximum sense value (maximum load current of a driver, for example). To stay below this voltage, use a resistance value of less than 2.35kΩ, as 2mA by 2.35kΩ is roughly 4.7V. If an MCU voltage of 3.3V is required, the resistance to stay below the MCU absolute maximum voltage, considering this 10% output error of IPROPI.