參數(shù)資料
型號： L6238SQA
廠商： 意法半導(dǎo)體
英文描述： 12V SENSORLESS SPINDLE MOTOR CONTROLLER
中文描述： 12V的無傳感器主軸電機(jī)控制器
文件頁數(shù)： 10/31頁
文件大小： 324K
代理商： L6238SQA
After the next align time-out 192/Falign), the con-
troller enters the Go mode, were the sequencer
again double increments the output phase upon
detectionof the motor’s Bemf.
The align time-out may be optimized for the appli-
cation by changing the Faling reference fre-
quency.
A Watch-Dog Timer protectionfeature is built into
the control logic to monitor the Falign pin for a
clocking signal. This circuitry, shown in Figure 2-3
will prevent start up the device if the Falign clock
is not present.
Without this feature, the output would remain in
the first phase under high current conditions, if
the clockwere not present.
If the external sequencer is used to provide start
up, the system clock may be tied to the Falign pin
to satisfy the requirements of the Watch-Dog
Timer.
2.3 Resynchronization
If power is momentarily lost, the sequencer can
automatically resynchronize to the monitored
STATE = 1
DRIVERS OFF
PERIOD STOP
DELAY STOP
MASK STOP
SEQLNC=1 &
OUTENA=0
RUN/BRK=X
INT. START-UP DISABLED
MIN. CLOCK DELAY
LOAD MIN. DELAY
LOAD MIN. MASK***
RUN/BRK=1 &
OUTENA=1
DRIVERS ON
PERIOD COUNT
DELAY COUNT
STATE=STATE+1*
MASK COUNT
MASK COUNT
SEQINC=0
SEQINC=1
LOAD DELAY=PERIOD
RESET PERIOD
PERIOD COUNT
DELAY COUNT**
BEMF
BEMF
SEQINC=0
SEQINC=1
RUN/BRAKE=1
RUN/BRAKE=0
FROM ANY STATE
DRIVERS OFF
MIN CLOCK DELAY
LOAD MIN MASK***
PERIOD STOP
DELAY COUNT
STATE=STATE+1
MASK COUNT
LOAD MIN. DELAY
LOAD MIN. MASK***
DELAY COUNT
STATE=STATE+1
MASK COUNT
BEMF
STATE=STATE+1
SEQINC=1
RETURN TO
PREVIOUS STATE
(CHANGING SEQINC=1)
BEMF
FROM ANY STATE
WITH SEQ_INC=0
* VALIDIF SEQINC=0, AND DELAY TIMES OUT
** CLOCK DELAY=F(TDLY_[2:0])
WHEN BEMF PERIOD <3.3ms @ 10MHz
(SPEED >12.7HzFOR 8 POLES)
STATE=STATE+2
CHECK FOR Zc
BEMF
DRIVERS OFF
STATE=STATE+1
MIN CLOCK DELAY
LOAD MIN DELAY
LOAD MAX MASK
DELAY COUNT
STATE=STATE+1
MASK COUNT
OUTENA=1
OUTENA=1
OUTENA=1
DRIVERS OFF
MIN CLOCK DELAY
PERIOD STOP
DRIVERS ON
PERIOD STOP
DELAY STOP
MASK STOP
STATE=STATE+2
STATE=STATE+1
LOAD DELAY=MIN
LOAD MASK=MAX
PERIOD COUNT
DELAY COUNT
STATE=STATE+1
MASK COUNT
BEMF
LOAD DELAY=MIN
LOAD MASK=MIN
RESET PERIOD
PERIOD COUNT
DELAY COUNT*
STATE=STATE+1
MASK COUNT
2
21
SYS_CLK
2
21
SYS_CLK
DRIVERS OFF
RUN/BRK=0
DRIVERS OFF
RUN/BRK=0
DRIVERS ON
LOAD DELAY=PERIOD
LOAD MASK=PERIOD
RESET PERIOD
PERIOD COUNT
DELAY COUNT*
STATE=STATE+1
MASK COUNT
DRIVERS OFF
MIN CLOCK DELAY
PERIOD STOP
OUTENA=0
BEMF
MONO=0**
BEMF
OUTENA=1
OUTENA=1
BEMF
ALIGN &
GO MODE
RESYNCHRONIZATION
MODE
RUN
MODE
* CLOCK DELAY=F(TDLY [2:0] WHEN BEMF PERIOD <3.3ms @ 10MHz(SPEED>12.7Hz FOR 8 POLES)
BEMF: BEMF RISING WITH PNSLOPE=1 OR BEMF FALLING WITH PNSLOPE=0
BEMF1: BEMF RISINGWITH PNSLOPE=0 OR BEMF FALLING WITHPNSLOPE=1
**MONO=0 WHEN FREQ(BEMF)=2*FREQ(PHASE)
***MIN MASK=192/SYS_CLK(I.E. WITHSYS_CLK=10MHz,MIN MASK=19.2
μ
s)
D95IN280
192/FALIGN
64/FALIGN
OUTENA=0
2
21
SYS_CLK
OUTENA=0
OUTENA=1
BEMF
POR=0
FROM ANY STATE
(FOR IS GENERATED INTERNALLY
BY MONITORING VLOGIC)
Figure 2-1
L6238S
10/31
相關(guān)PDF資料
PDF描述
L6238SQT 12V SENSORLESS SPINDLE MOTOR CONTROLLER
L6327 6 / 4 CHANNEL VOLTAGE SENSE GMR PREAMPLIFIER
L6332 6 / 4 CHANNEL VOLTAGE SENSE GMR PREAMPLIFIER
L6353D SMART DRIVER FOR POWER MOS & IGBT
L6363 PRML READ/WRITE CHANNEL
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
L6238SQT 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:12V SENSORLESS SPINDLE MOTOR CONTROLLER
L6239 制造商:未知廠家 制造商全稱:未知廠家 功能描述:
L623C 制造商:未知廠家 制造商全稱:未知廠家 功能描述:THYRISTOR MODULE|BRIDGE|HALF-CNTLD|CA|280V V(RRM)|46A I(T)
L623F 制造商:未知廠家 制造商全稱:未知廠家 功能描述:THYRISTOR MODULE|BRIDGE|HALF-CNTLD|CA|280V V(RRM)|46A I(T)
L624 制造商:CRYDOM 制造商全稱:Crydom Inc., 功能描述:Power Modules
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報(bào)價(jià)

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*