JAJS504K October   2009  – January 2022 DRV8824

PRODUCTION DATA  

  1. 1 特長
  2. 2 アプリケーション
  3. 3 概要
  4. 4 Revision History
  5. 5 Pin Configuration and 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 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 PWM Motor Drivers
      2. 7.3.2 Current Regulation
      3. 7.3.3 Decay Mode
      4. 7.3.4 Blanking Time
      5. 7.3.5 Microstepping Indexer
      6. 7.3.6 nRESET, nENBL and nSLEEP Operation
      7. 7.3.7 Protection Circuits
        1. 7.3.7.1 Overcurrent Protection (OCP)
        2. 7.3.7.2 Thermal Shutdown (TSD)
        3. 7.3.7.3 Undervoltage Lockout (UVLO)
    4. 7.4 Device Functional Modes
      1. 7.4.1 STEP/DIR Interface
      2. 7.4.2 Microstepping
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Stepper Motor Speed
        2. 8.2.2.2 Current Regulation
        3. 8.2.2.3 Decay Modes
      3. 8.2.3 Application Curves
        1.       Power Supply Recommendations
          1. 9.1 Bulk Capacitance
          2. 9.2 Power Supply and Logic Sequencing
  9. 9 Layout
    1. 9.1 Layout Guidelines
    2. 9.2 Layout Example
    3. 9.3 Thermal Considerations
    4. 9.4 Power Dissipation
    5. 9.5 Heatsinking
  10. 10Device and Documentation Support
    1. 10.1 Community Resources
    2. 10.2 Trademarks
  11. 11Mechanical, Packaging, and Orderable Information

パッケージ・オプション

デバイスごとのパッケージ図は、PDF版データシートをご参照ください。

メカニカル・データ（パッケージ｜ピン）
  • RHD|28
  • PWP|28
サーマルパッド・メカニカル・データ
発注情報

5 Pin Configuration and Functions

GUID-170198D5-24C8-4DB5-9DD4-D4071CDEB231-low.gifFigure 5-1 PWP Package28-Pin HTSSOPTop View
GUID-F206A221-BB1B-4122-A3A7-D82A55007B96-low.gifFigure 5-2 RHD Package28-Pin VQFNTop View
Table 5-1 Pin Functions
PIN I/O(1) DESCRIPTION EXTERNAL COMPONENTS OR CONNECTIONS
NAME PWP RHD
POWER AND GROUND
GND 14, 28 3, 17 — Device ground
VMA 4 7 — Bridge A power supply Connect to motor supply (8.2 to 45 V). Both pins must be connected to same supply, bypassed with a 0.1-µF capacitor to GND, and connected to appropriate bulk capacitance.
VMB 11 14 — Bridge B power supply
V3P3OUT 15 18 O 3.3-V regulator output Bypass to GND with a 0.47-μF 6.3-V ceramic capacitor. Can be used to supply VREF.
CP1 1 4 IO Charge pump flying capacitor Connect a 0.01-μF 50-V capacitor between CP1 and CP2.
CP2 2 5 IO Charge pump flying capacitor
VCP 3 6 IO High-side gate drive voltage Connect a 0.1-μF 16-V ceramic capacitor. A 1-MΩ resistor can be connected to VM to accelerate discharge of the VCP capacitor.
CONTROL
nENBL 21 24 I Enable input Logic high to disable device outputs and indexer operation, logic low to enable. Internal pulldown.
nSLEEP 17 20 I Sleep mode input Logic high to enable device, logic low to enter low-power sleep mode. Internal pulldown.
STEP 22 25 I Step input Rising edge causes the indexer to move one step. Internal pulldown.
DIR 20 23 I Direction input Level sets the direction of stepping. Internal pulldown.
MODE0 24 27 I Microstep mode 0 MODE0 through MODE2 set the step mode: full, 1/2, 1/4, 1/8/ 1/16, or 1/32 step. Internal pulldown.
MODE1 25 28 I Microstep mode 1
MODE2 26 1 I Microstep mode 2
DECAY 19 22 I Decay mode Low = slow decay, Open = mixed decay,
High = fast decay. Internal pulldown and pullup.
nRESET 16 19 I Reset input Active-low reset input initializes the indexer logic and disables the H-bridge outputs. Internal pulldown.
AVREF 12 15 I Bridge A current set reference input Reference voltage for winding current set. Normally AVREF and BVREF are connected to the same voltage. Can be connected to V3P3OUT.
BVREF 13 16 I Bridge B current set reference input
NC 23 26 — No connect Leave this pin unconnected.
STATUS
nHOME 27 2 OD Home position Logic low when at home state of step table
nFAULT 18 21 OD Fault Logic low when in fault condition (overtemperature, overcurrent)
OUTPUT
ISENA 6 9 IO Bridge A ground / Isense Connect to current sense resistor for bridge A.
ISENB 9 12 IO Bridge B ground / Isense Connect to current sense resistor for bridge B.
AOUT1 5 8 O Bridge A output 1 Connect to bipolar stepper motor winding A.
Positive current is AOUT1 → AOUT2
AOUT2 7 10 O Bridge A output 2
BOUT1 10 13 O Bridge B output 1 Connect to bipolar stepper motor winding B.
Positive current is BOUT1 → BOUT2
BOUT2 8 11 O Bridge B output 2
(1) Directions: I = input, O = output, OD = open-drain output, IO = input/output