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參數(shù)資料
| 型號(hào)： | THMC45 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類(lèi)： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, 0.25 A, PDSO8 |
| 封裝： | PLASTIC, HTSSOP-8 |
| 文件頁(yè)數(shù)： | 11/14頁(yè) |
| 文件大?。?/td> | 157K |
| 代理商： | THMC45 |
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PRODUCT PREVIEW documents contain information on new
products in the definition Phase. Characteristic data and other
data specifications are subject to change without notice. This
document is to be used for discussion only and should not be
used as the basis for any design.
thmc45.doc
Copyright
2000 Texas Instruments
!TI Strictly Private !
6
THMC45
SINGLE-PHASE 5VDC BRUSHLESS FAN DRIVER WITH SINGLE WIRE CONTROL INTERFACE
Product Preview
AC Electrical Characteristics
(VPWR = 12V, Ta = -30 to +80°C Unless Otherwise Noted)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
fPWM
Allowable PWM input
frequency
Allowable PWM input
frequency
TBD
25
TBD
kHz
tsleep
Time after no transitions on
PWM pin that device needs to
enter sleep state.
2ms
tpw
Tachometer signal pulse width
1
s
tdelay
Delay after rising edge of
PWM input for TACH signal to
appear
1s
tRD
Locked rotor detect delay time
1
s
tRETRY
Auto-Restart delay time
8
s
tDE-GLITCH
Time which Hall transition
must be valid in order for
commutation to occur
25
s
tIGNORE
Any Hall transition is ignored
(no commutation) for this time
AFTER tDE-GLITCH
200
s
tDEAD
PWM commutation dead time.
PWM drive is disabled for this
time after the tHALL de-glitch
time
TBD
ns
tPWM_DE-GLITCH
De-glitch time for PWM input
to prevent tach current pulses
from falsely triggering PWM
TBD
s
tf(OUT)
VOUT Output fall time
See Note 2
200
ns
tr(OUT)
VOUT Output rise time
See Note 2
200
ns
tPLH
Propagation time low to high
See Note 2
TBD
s
tPHL
Propagation time high to low
See Note 2
TBD
s
Note 2: For design purposes only, not production tested.
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