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參數(shù)資料
| 型號： | TDA5145T |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 運動控制電子 |
| 英文描述： | Brushless DC motor drive circuit |
| 中文描述： | BRUSHLESS DC MOTOR CONTROLLER, 2.5 A, PDSO28 |
| 封裝： | PLASTIC, SOL-28 |
| 文件頁數(shù)： | 10/24頁 |
| 文件大小： | 249K |
| 代理商： | TDA5145T |
June 1994
10
Philips Semiconductors
Product specification
Brushless DC motor drive circuit
TDA5145
APPLICATION INFORMATION
(1) Value selected for 3 Hz start-up oscillator frequency.
Fig.7 Application diagram without use of the operational transconductance amplifier (OTA).
Introduction (see Fig.8)
Full-wave driving of a three phase motor requires three
push-pull output stages. In each of the six possible states
two outputs are active, one sourcing (H) and one sinking
(L). The third output presents a high impedance (Z) to the
motor, which enables measurement of the motor
back-EMF in the corresponding motor coil by the EMF
comparator at each output. The commutation logic is
responsible for control of the output transistors and
selection of the correct EMF comparator. In Table 1 the
sequence of the six possible states of the outputs has
been depicted.
The zero-crossing in the motor EMF (detected by the
comparator selected by the commutation logic) is used to
calculate the correct moment for the next commutation,
that is, the change to the next output state. The delay is
calculated (depending on the motor loading) by the
adaptive commutation delay block.
Because of high inductive loading the output stages
contain flyback diodes. The output stages are also
protected by a current limiting circuit and by thermal
protection of the six output transistors.
Table 1
Output states.
Note
1.
H = HIGH state;
L = LOW state;
Z = high-impedance OFF-state.
The detected zero-crossings are used to provide speed
information. The information has been made available on
the FG output pin. This is an open collector output and
provides an output signal with a frequency that is half the
commutation frequency.
The system will only function when the EMF voltage from
the motor is present. Therefore, a start oscillator is
STATE
MOT1
(1)
MOT2
(1)
MOT3
(1)
1
2
3
4
5
6
Z
H
H
Z
L
L
L
L
Z
H
H
Z
H
Z
L
L
Z
H
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA5145TS | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Brushless DC motor drive circuit |
| TDA5145TS/C1,518 | 功能描述:BLDC MOTOR CONTROLLER RoHS:是 類別:集成電路 (IC) >> PMIC - 電機和風(fēng)扇控制器，驅(qū)動器 系列:- 標準包裝:1 系列:- 應(yīng)用:直流電機驅(qū)動器，步進電機驅(qū)動器 評估套件:- 輸出數(shù):1 或 2 電流 - 輸出:750mA 電壓 - 負載:10 V ~ 40 V 電源電壓:4.5 V ~ 5.5 V 工作溫度:-20°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-BFSOP（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:24-SOP 包裝:Digi-Reel® 其它名稱:MTS62C19A-HS105DKR |
| TDA5146T | 制造商:NXP Semiconductors 功能描述: |
| TDA5147CH | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:12 V Voice Coil Motor VCM driver and spindle motor drive combination chip |
| TDA5147K | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:12 V Voice Coil Motor VCM driver and spindle motor drive combination chip |
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