DATASHEET SEARCH SITE | WWW.ALLDATASHEET.COM
Document overview
- Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 4
Technical content
1.2A Quad H-Bridge Motor Driver
DESCRIPTION
The PT2475 is a quad DMOS full -bridge driver capable of driving up to two stepper motors or four DC motors. Each full-bridge output is rated up to 1.2A and 36V. The PT2475 includes fixed off -time pulse width modulation (PWM) current regulators, along with 2-bit nonlinear DACs (digital -to-analog converters) that allow stepper motors to be controlled in full, half, and quarter steps, and DC motors in forward, reverse, and coast modes. The PWM current regulator uses mixed decay mode for reduced audible motor noise, increased step accuracy, and reduced power dissipation. Internal synchronous rectification control circuitry is provided to improve power dissipation during PWM operation. Protection features include thermal shutdown with hysteresis, under-voltage lockout (UVLO) and crossover current protection. Special power up sequencing is not required. FEATURE 36V output rating 4 full bridges Dual stepper motor driver High current outputs 3.3 and 5V compatible logic supply Synchronous rectification Internal under-voltage lockout (UVLO) Thermal shutdown circuitry Crossover-current protection Low profile QFN package APPLICATION Robotics Security monitoring, high-speed ball Engraving machine, laser cutting machine Scanner, copier BLOCK DIAGRAM PT2475Micro Processor VREF VDD 3.3V PHASE1 I01 I11 PHASE2 I02 I12 PHASE3 I03 I13 PHASE4 I04 I14 VREF1 VREF2 VREF3 VREF4 VDD 0.1uF 50V 0.1uF 50V VMOTRO 32V CP1 CP2 VCP VBB1 VBB2 OUT1A OUT1B OUT2A OUT2B SENSE1 SENSE2 SENSE3 SENSE4 OUT3A OUT3B OUT4A OUT4B RS1 RS2 RS3 RS4
V1.2 2 February 2019 APPLICATION CIRCUIT OSC CHARGE PUMP CP1 CP2 VCP VDD VBB1 Control Logic Bridge 1 and 2 PHASE1 I01 I11 PHASE2 I02 I12 SENSE1 ÷3VREF1 PWM Latch Blanking SENSE2 ÷3VREF2 PWM Latch Blanking Control Logic Bridge 1 and 2 PHASE3 I03 I13 PHASE4 I04 I14 SENSE3 ÷3VREF3 PWM Latch Blanking SENSE4 ÷3VREF4 PWM Latch Blanking GATE DRIVER OUT1A OUT1B SENSE1 OUT2A OUT2B SENSE2 VBB1 VBB1 DMOS FULL-BRIDGE 1 DMOS FULL-BRIDGE 2 GATE DRIVER VCP VCP SENSE1 SENSE2 DMON FULL-BRIDGE 3 DMON FULL-BRIDGE 4 OUT3A OUT3B VBB2 OUT4A OUT4B SENSE3 SENSE4 SENSE3 SENSE4 GND GND VBB2 0.1uF 50V 0.1uF 50V 100 uF 50V 0.22uF 50V
V1.2 3 February 2019 ORDER INFORMATION Valid Part Number Package Type Top Code PT2475-LQ 48 Pins, ELQFP PT2475-LQ PT2475 36 Pins, QFN PT2475 PIN CONFIGURATION I12 I11 GND VCP CP1 CP2 I01 I02 I03 PHASE1 PHASE2 GND VREF4 VREF3 VREF2 VREF1 VDD PHASE3 I04 OUT1A SENSE1 OUT1B VBB1 OUT2B SENSE2 OUT2A PHASE4 I13 OUT3A SENSE3 OUT3B VBB2 OUT4B SENSE4 OUT4A I14 PAD PAD NC NC OUT1A SENSE1 OUT1B VBB1 OUT2B SENSE2 OUT2A NC NC NC PHASE1 PHASE2 GND VREF4 VREF3 VREF2 VREF1 VDD PHASE3 NC PHASE4 I14 OUT3A SENSE3 OUT3B VBB2 OUT4B SENSE4 OUT4A NC NC NC NC NC I12 I11 GND VCP CP1 CP2 I01 I02 I03 I04 I13 NC QFN-36 ELQFP-48
V1.2 15 February 2019 IMPORTANT NOTICE Princeton Technology Corporation (PTC) reserves the right to make corrections, modifications, enhancements, improvements, and other changes to its products and to discontinue any product with out notice at any time. PTC cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a PTC product. No circuit patent licenses are implied. Princeton Technology Corp. 2F, 233-1, Baociao Road, Sindian Dist., New Taipei City 23145, Taiwan Tel : 886-2-66296288 Fax: 886-2-29174598 http://www.princeton.com.tw