參數(shù)資料
型號： TPIC43T02DAR
廠商： TEXAS INSTRUMENTS INC
元件分類： 運動控制電子
英文描述： BRUSHLESS DC MOTOR CONTROLLER, PDSO38
封裝： PLASTIC, TSSOP-38
文件頁數(shù)： 8/29頁
文件大小： 463K
代理商： TPIC43T02DAR
TPIC43T01, TPIC43T02
THREE-PHASE BRUSHLESS MOTOR RPM CONTROLLERS
SLIS098 – APRIL 2000
16
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PRINCIPLES OF OPERATION
Coast
Lock Detect
Range
f(FGSOUT)
(Motor RPM)
+5%
f(ref)
–5%
Figure 10. Coast Mode Operation
synchronous rectification mode (EEPROM address 0, bit 3, default = H for TPIC43T01, default = L for
TPIC43T02)
The TPIC43T01 is set up with synchronous rectification enabled. With synchronous rectification enabled
(EEPROM address 0, bit 3 = H), the complimentary LGx of the phase being pulse-width-modulated will turn ON
inversely to UGx during each PWM cycle. This provides a low resistance path through the low-side FET,
operating in inverse, for recirculating inductive current of the motor winding. This technique improves drive
efficiency over allowing the inductive energy to recirculate through the FET’s drain-body diode. Dead-time will
be controlled in each half-H between upper to lower and lower to upper transitions to prevent high current
conduction directly through the power FETs. During this dead-time, recirculation current, due to load inductance,
will occur in the lower FET body diode. After dead-time, the complimentary LGx will be turned on, thus reducing
power dissipation by using the lower FET in inverse to produce a lower voltage drop across
rDS(ON) than would
occur across VF of the FET drain-body diode (see Figure 11).
Sync Blanking
f(FG)
(Motor RPM)
+5%
fref
–5%
Synchronous
Rectification
Synchronous
Rectification
Lock Detect
Range
Figure 11. Synchronous Rectification/Coast Mode Operation
The TPIC43T02 is set up with synchronous rectification disabled. With synchronous rectification disabled
(EEPROM address 0, bit 3 = L), the complimentary LGx will stay low during the OFF time of UGx, and inductive
current will thus recirculate through the lower external FET drain-body diode for the duration of t(OFF).
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPIC44H01 制造商:TI 制造商全稱:Texas Instruments 功能描述:4-CHANNEL SERIAL AND PARALLEL HIGH-SIDE PRE-FET DRIVER
TPIC44H01DA 功能描述:功率驅(qū)動器IC 4ChSerial/ParallelHi SidePreFETDrvr RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube
TPIC44H01DAG4 功能描述:功率驅(qū)動器IC 4Ch Ser/Para High- Side Pre-FET Drvr RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube
TPIC44H01DAR 功能描述:功率驅(qū)動器IC 4Ch Ser/Para High- Side Pre-FET Drvr RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube
TPIC44H01DARG4 功能描述:功率驅(qū)動器IC 4Ch Ser/Para High- Side Pre-FET Drvr RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube
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