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参数资料
| 型号： | THMC41DR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 运动控制电子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, 1.5 A, PDSO14 |
| 封装： | PLASTIC, SOP-14 |
| 文件页数： | 4/19页 |
| 文件大小： | 300K |
| 代理商： | THMC41DR |
THMC40, THMC41
VARIABLE SPEED 12-VDC BRUSHLESS FAN MOTOR DRIVERS
SLIS097 – MARCH 2000
12
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
locked rotor protection
An internal digital timer monitors the output of the Hall sensor amplifier. When a change in commutation state
is not observed within one second (typical with 2200 pF COSC), the VOUT, PHA, and PHB outputs are disabled
for eight seconds (typical with 2200 pF COSC). After the outputs have been disabled for eight seconds (typical
with 2200 pF COSC), the THMC40 and THMC41 re-enable the VOUT, PHA, and PHB outputs to automatically
restart the motor after a locked rotor condition. If the locked rotor condition still exists, the above process repeats
itself until the condition is removed, or the THMC40 and THMC41 are powered down (see Figure 9).
NOTE:
The locked rotor detection time and auto-retry time are proportional to the PWM frequency, and
therefore to the value of COSC. With a COSC value of 2200 pF, the PWM frequency is typically
22.7 kHz, locked rotor detection time is typically one second, and auto-retry time is typically
eight seconds.
1s
Hall Sensor
Comparator
Output
1s
8s
VOUT, PHA and
PHB Output
Enable
RD Output
(THMC41)
Tach Output
(THMC40)
Figure 9. Typical Locked Rotor Protection Timing Waveforms
相关PDF资料 |
PDF描述 |
|---|---|
| THMC40DR | BRUSHLESS DC MOTOR CONTROLLER, 1.5 A, PDSO14 |
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| THS7002CPWP | SPECIALTY ANALOG CIRCUIT, PDSO28 |
| THS7002IPWP | SPECIALTY ANALOG CIRCUIT, PDSO28 |
| THS7001IPWP | SPECIALTY ANALOG CIRCUIT, PDSO20 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| THMC41SOPD | 制造商:TI 制造商全称:Texas Instruments 功能描述:VARIABLE SPEED 12-VDC BRUSHLESS FAN MOTOR DRIVERS |
| THMC45 | 制造商:TI 制造商全称:Texas Instruments 功能描述:5-V AND 3.3-V DC BRUSHLESS FAN MOTOR DRIVER WITH SINGLE WIRE CONTOL |
| THMC50 | 制造商:TI 制造商全称:Texas Instruments 功能描述:REMOTE/LOCAL TEMPERATURE MONITOR AND FAN CONTROLLER WITH SMBus INTERFACE |
| THMC50DBQR | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| THMC50SSOPDBQ | 制造商:TI 制造商全称:Texas Instruments 功能描述:REMOTE/LOCAL TEMPERATURE MONITOR AND FAN CONTROLLER WITH SMBus INTERFACE |
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