- 您现在的位置：买卖IC网 > PDF目录299014 > E-L8150TR (STMICROELECTRONICS) BRUSHLESS DC MOTOR CONTROLLER, PDSO28 PDF资料下载
参数资料
| 型号： | E-L8150TR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 运动控制电子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, PDSO28 |
| 封装： | LEAD FREE, SOP-28 |
| 文件页数： | 20/37页 |
| 文件大小： | 753K |
| 代理商： | E-L8150TR |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页当前第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页
Obsolete
Product(s)
- Obsolete
Product(s)
L8150
Precharge and hall effects filtering time description
Figure 17.
Startup sequence forced by FS comparator, supposing the motor rotating
too quickly
When the signal coming from the FS comparator has a falling edge, by default a zero-
crossing signal is generated and the logic waits for a Hall effect commutation and applies to
it a filtering time of TPRECHARGE = 400μsec. If the motor is rotating too quickly the next Hall
effect commutation happens before the filtering time is elapsed: this causes the reset of the
filter and, in consequence, a new count for the filter time of 400
μsec. Until the motor is
rotating too quickly no Hall effect commutation is acquired by the logic, thus the logic outputs
force high impedance condition.
Only when the motor speed becomes lower than the speed necessary to obtain a
Tel/6>400
μsec the Hall effect commutations are filtered and acquired.
If no Hall effect commutation is acquired during a period of TelMax/6, a precharge function
will be done.
Depending on the last filtered Hall effect codification present in the logic and, also, on the
Hall effect codification having a duration longer than 400
μsec (because the Hall effect
codifications filtered have to be consecutive), the Hall effect commutations filtered using a
filter time of 400usec could be two or, more probably, three.
After this Hall effect commutations the logic outputs start applying the right pattern to the
motor windings.
The motor rotation direction is irrelevant, in fact this can influence only the kind of pattern
applied after the two or three filtered Hall effect commutation.
●
Let's consider a startup sequence forced by FS-Comparator, supposing the motor
rotating slowly.
When the signal coming from the FS comparator has a falling edge, the logic waits for a Hall
effect commutation for a period of time equal to TelMAX/6. If no Hall effect commutation
happens during this time, the behaviour is the one described in the previous section, when a
startup sequence with motor stopped is described.
Let's suppose that during the counting period of TelMAX/6 a Hall effect commutation is
detected. This commutation is filtered using 400usec. Considering the hypothesis done,
starting from the Hall effect commutation detection, no more commutation will be detected
FS
ZC
HALL BUS
FILTER TIME
PHASES
PHASES EXCITED
TΔzc’’/576
TΔzc’
Tel
U
MOTOR ROTATING TOO FAST
400 us
TΔzc’’
400 us
TΔzc’/576
TΔzc’
400 us
相关PDF资料 |
PDF描述 |
|---|---|
| E-L9935013TR | STEPPER MOTOR CONTROLLER, 2.5 A, PDSO20 |
| E1L33-3BOA6-02 | T-1 SINGLE COLOR LED, BLUE, 3 mm |
| E1L35-3G0A7-02 | T-1 SINGLE COLOR LED, GREEN, 3 mm |
| E1L35-3G0A5-02 | T-1 SINGLE COLOR LED, GREEN, 3 mm |
| E1SAD20-32.6864MTR | QUARTZ CRYSTAL RESONATOR, 32.6864 MHz |
相关代理商/技术参数 |
参数描述 |
|---|---|
| EL815B1 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Technical Data Sheet Photocoupler |
| EL815M | 制造商:Everlight Electronics Co 功能描述:DARLINGTON, 4-PIN DIP, 0.4" LEAD SPACING OPTION - Rail/Tube |
| EL815M(TA)-V | 制造商:EVERLIGHT 制造商全称:Everlight Electronics Co., Ltd 功能描述:4 PIN DIP PHOTOTRANSISTOR |
| EL815M(TB)-V | 制造商:EVERLIGHT 制造商全称:Everlight Electronics Co., Ltd 功能描述:4 PIN DIP PHOTOTRANSISTOR |
| EL815M(TD)-V | 制造商:EVERLIGHT 制造商全称:Everlight Electronics Co., Ltd 功能描述:4 PIN DIP PHOTOTRANSISTOR |
发布紧急采购，3分钟左右您将得到回复。