《步进电机驱动深度解析》由会员分享，可在线阅读，更多相关《步进电机驱动深度解析（57页珍藏版）》请在金锄头文库上搜索。
1、TI Spins Motors Smarter Safer Greener DRV8x Products Deep Diving DRV8x系列產品之深度解析系列產品之深度解析 TANG Zhao 唐釗 Motor Application Team 馬達應用團隊 Texas Instruments 德州儀器 September 2012 二零一二年九月 Selective Disclosure What Can DRV8x Do DRV8x 可實現什麼可實現什麼 Stepper Motor Driver 步步進馬達驅動進馬達驅動 1 8V 60V 0 12A High Count Steppi
2、ng Indexer 高細分微步進索引 Current Regulation Control 電流調節 控制 Brushed DC Motor Driver 有刷有刷DC馬達驅動馬達驅動 1 8V 60V 0 24A Inrush Current Stall protection 突波電流 堵轉保護 3 Phase BLDC Motor Driver 三相三相BLDC馬達馬達 驅動驅動 8V 60V 0 13A Integrated current sense amps buck 整合電流感應放大器 降壓 Pre drivers More with external reference ful
3、l half quarter and eighth step Up to 1 32 with indexer More with external reference Current Regulation Fixed off time More configurable Fixed frequency Fewer passives Fixed off time More configurable Fixed frequency Fewer passives Protection OCP OTS UVLO cross conduction OCP OTS UVLO cross conductio
4、n OCP OTS UVLO cross conduction OCP OTS UVLO cross conduction Package s 28 HTSSOP P2P with DRV8811 28 HTSSOP P2P with DRV8824 28 HTSSOP P2P with DRV8818 28 HTSSOP P2P with DRV8825 Cost 2 40 2 40 1 80 1 65 Roadmap Selective Disclosure DRV8837 vs Competition Specifications TI DRV8837 Allegro A3903 All
5、egro A3906 On Semi Sanyo LV8417CS Motor Type Brushed DC Single H Bridge Brushed DC Single H Bridge Stepper or Brushed Dual H Bridge Brushed DC Single H Bridge Motor Supply Voltage1 8 To 11V3 to 5 5V2 5 to 9V2 0 to 10 5V Dual Supply SupportYesNoNoYes RMS Current1 8A500mA 2A when outputs are parallele
6、d 1A Peak Current1 8A500mA 2 5A when outputs are paralleled 2 0A 100ms 3 8A 10ms RDSON LS HS 280m 1 45 570m outputs paralleled 270m Sleep Current Max 120nA 5V500nA500nA 5V1uA Control I FPWMPWMPWMPWM Inrush current protection NoNo Yes Itrip 0 2 Rs No On Chip Voltage Regulation No Yes Output 4 x VREF
7、R1 R1 R2 NoNo Protection Short circuit thermal UVP No short circuitNo short circuit No short circuit Package 8 Pin WSON 2 x 2mm 4mm2 8 Pin DFN 2 x 2mm 4mm2 20 Pin QFN 4 x 4mm 16mm2 9 ball 1 47 x 1 47mm 2 16mm2 Pricing 1k Units 0 45 0 45 0 80 1 75 Selective Disclosure Who Major Asian Toy Manufacture
8、What DRV8837 Where Aileron Flaps Rudder control Volume 1Mu Where We Won How We Won MCU Success Stories DRV8837 Remote Control Airplane Toys We knocked out a low cost discrete solution due to significant board space savings that helped reduce airplane size and weight extended battery life due to low
9、RDSON low sleep current and aggressive pricing DRV8837 Selective Disclosure DRV8xDRV8x vs vs Discretes Discretes DRV8835 Fully protected 20 x smaller Cost competitive DRV8x wins on size protection embedded intelligence and cost competitiveness 3 Amps out of 2 x 3mm package And And Don t forget Don t forget Assembly Cost Assembly Cost Selective Disclosure DRV8x Motor KitsDRV8x Motor Kits DRV8301 HC C2 KIT DRV8312 C2 KIT DRV8412 C2 KIT DRV8825EVM DRV8833EVM BLDCBLDC MSP430 Stellaris C2000 FOCFOC DK LM3S DRV8312
