SLDS272 September   2024 DRV81620-Q1

ADVANCE INFORMATION  

  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
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
      1. 6.5.1 SPI Timing Requirements
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Control Pins
        1. 7.3.1.1 Input Pins
        2. 7.3.1.2 nSLEEP Pin
      2. 7.3.2 Power Supply
        1. 7.3.2.1 Modes of Operation
          1. 7.3.2.1.1 Power-up
          2. 7.3.2.1.2 Sleep mode
          3. 7.3.2.1.3 Idle mode
          4. 7.3.2.1.4 Active mode
          5. 7.3.2.1.5 Limp Home mode
        2. 7.3.2.2 Reset condition
      3. 7.3.3 Power Stage
        1. 7.3.3.1 Switching Resistive Loads
        2. 7.3.3.2 Inductive Output Clamp
        3. 7.3.3.3 Maximum Load Inductance
        4. 7.3.3.4 Reverse Current Behavior
        5. 7.3.3.5 Switching Channels in parallel
        6. 7.3.3.6 Bulb Inrush Mode (BIM)
        7. 7.3.3.7 Integrated PWM Generator
      4. 7.3.4 Protection and Diagnostics
        1. 7.3.4.1 Undervoltage on VM
        2. 7.3.4.2 Overcurrent Protection
        3. 7.3.4.3 Over Temperature Protection
        4. 7.3.4.4 Over Temperature Warning
        5. 7.3.4.5 Over Temperature and Overcurrent Protection in Limp Home mode
        6. 7.3.4.6 Reverse Polarity Protection
        7. 7.3.4.7 Over Voltage Protection
        8. 7.3.4.8 Output Status Monitor
        9. 7.3.4.9 Open Load Detection in ON State
          1. 7.3.4.9.1 Open Load at ON - direct channel diagnosis
          2. 7.3.4.9.2 Open Load at ON - diagnosis loop
          3. 7.3.4.9.3 OLON bit
      5. 7.3.5 SPI Communication
        1. 7.3.5.1 SPI Signal Description
          1. 7.3.5.1.1 Chip Select (nSCS)
            1. 7.3.5.1.1.1 Logic high to logic low Transition
            2. 7.3.5.1.1.2 Logic low to logic high Transition
          2. 7.3.5.1.2 Serial Clock (SCLK)
          3. 7.3.5.1.3 Serial Input (SDI)
          4. 7.3.5.1.4 Serial Output (SDO)
        2. 7.3.5.2 Daisy Chain Capability
        3. 7.3.5.3 SPI Protocol
        4. 7.3.5.4 SPI Registers
          1. 7.3.5.4.1  Standard Diagnosis Register
          2. 7.3.5.4.2  Output control register
          3. 7.3.5.4.3  Bulb Inrush Mode Register
          4. 7.3.5.4.4  Input 0 Mapping Register
          5. 7.3.5.4.5  Input 1 Mapping Register
          6. 7.3.5.4.6  Input Status Monitor Register
          7. 7.3.5.4.7  Open Load Current Control Register
          8. 7.3.5.4.8  Output Status Monitor Register
          9. 7.3.5.4.9  Open Load at ON Register
          10. 7.3.5.4.10 EN_OLON Register
          11. 7.3.5.4.11 Configuration Register
          12. 7.3.5.4.12 Output Clear Latch Register
          13. 7.3.5.4.13 FPWM Register
          14. 7.3.5.4.14 PWM0 Configuration Register
          15. 7.3.5.4.15 PWM1 Configuration Register
          16. 7.3.5.4.16 PWM_OUT Register
          17. 7.3.5.4.17 MAP_PWM Register
          18. 7.3.5.4.18 Configuration 2 Register
  9. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Suggested External Components
    2. 8.2 Layout
      1. 8.2.1 Layout Guidelines
      2. 8.2.2 Package Footprint Compatibility
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information
    1. 10.1 Tape and Reel Information

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

7.3.1.1 Input Pins

The device has two input pins. Each input pin is connected by default to one channel (IN0 to channel 2, IN1 to channel 3). Input Mapping Registers MAP0 and MAP1 can be programmed to connect additional or different channels to each input pin, as shown in Figure 7-2. The signals driving the channels are an OR combination between EN register status, PWM generators (according to PWM generator Output Mapping status), IN0 and IN1 (according to Input Mapping registers status).

DRV81620-Q1 Input MappingFigure 7-2 Input Mapping

The logic level of the input pins can be monitored via the Input Status Monitor Register (INST). The Input Status Monitor is operational also when the device is in Limp Home mode. If one of the Input pins is set to logic high and the nSLEEP pin is set to logic low, the device switches into Limp Home mode and activates the channel mapped by default to the input pins.
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