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参数资料
| 型号： | ZXBM1016ST20TA |
| 厂商： | Diodes Inc |
| 文件页数： | 7/12页 |
| 文件大小： | 0K |
| 描述： | IC MOTOR CTRLR 1PH TSSOP20 |
| 标准包装： | 1 |
| 应用： | DC 电机驱动器，无刷（BLDC） |
| 输出数： | 1 |
| 电源电压： | 6.7 V ~ 18 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 20-TSSOP |
| 包装： | 标准包装 |
| 产品目录页面： | 1479 (CN2011-ZH PDF) |
| 其它名称： | ZXBM1016ST20DKR |
ZXBM1016
SPD - Speed control input
The voltage applied to the SPD pin provides control over the fan motor speed by varying the Pulse
Width Modulated (PWM) drive ratio at the Ph1Lo and Ph2Lo outputs. The input voltage range for
the control signal is 3V to 1V, representing 0% to 100% drive respectively.
If variable speed control is not required this pin can be left with an external potential divider to
set a fixed speed or tied through a 10k
resistor to ground to provide full speed i.e. 100% PWM
drive.
The advantage of a fixed potential divider is that the benefit of the current limit and tail-end
current control can be achieved. Neither function will operate with the pin tied directly to ground.
If full speed with current limit and tail-end current control is required then connect the SPD pin
ground through a 10k
resistor with a 0.1 F capacitor in parallel. This capacitor is used for the
tail-end current control shaping.
If required this pin can also be used as an enable pin. The application of a voltage >3.0V will force
the PWM drive fully off, in effect disabling the drive.
S MIN - Minimum speed threshold voltage
A voltage can be set on this pin using a potential divider between the ThRef and Gnd. This voltage
is monitored by the SPD pin such that the SPD voltage cannot rise above the S MIN voltage. As a
higher voltage on the SPD pin represents a lower speed it therefore restricts the lower speed
range of the motor. If this feature is not required the pin is left tied to ThRef so no minimum speed
will be set.
If the fan is being controlled from an external voltage source and the minimum speed feature is
required then a 10k
resistor should be placed in series with the external control voltage and the
SPD pin.
C LCK - Locked rotor and run mode timing capacitor
The C LCK pin will have a capacitor connected to ground. It is a dual function pin providing timing
whilst running and when in the lock condition.
When a motor is running under normal conditions this pin provides a triangular waveform related
to the speed of the motor. This waveform is used by the tail-end current control circuit to
determine the end of the commutation cycle.
If the fan stops rotating for any reason then this pin takes on the conventional operation of a
Locked Rotor monitor. In this condition and after the motor has stopped, a predetermined time
(T OFF ) will elapse during which the motor will not be driven. After this delay the circuitry uses a
defined period (T ON ) to attempt to re-enable the output drive by going through a start-up routine
in an attempt to re-start the fan. This cycle of (T OFF ) and (T ON ) will be repeated indefinitely or until
the fan re-starts.
The cycle of (T OFF ) and (T ON ) is also used to start the fan from power-up and so this pin forms a
start-up function in conjunction with the current monitor circuit described towards the end of this
section.
The time period of (T OFF ) and (T ON ) is determined by the value of capacitor applied to the C LCK
pin. Any selection of the value will need consideration when in the run and lock modes. Typically
a 0.47 F will provide for most applications.
? Zetex Semiconductors plc 2007
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ZXBM1016ST20TC | 功能描述:马达/运动/点火控制器和驱动器 SINGLE PHSE PRE-DRVR W/TAIL END CURR CTRL RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
| ZXBM1017 | 制造商:ZETEX 制造商全称:ZETEX 功能描述:VARIABLE SPEED SINGLE- PHASE BLDC MOTOR CONTROLLER |
| ZXBM1017_07 | 制造商:ZETEX 制造商全称:ZETEX 功能描述:VARIABLE SPEED SINGLE- PHASE BLDC MOTOR CONTROLLER |
| ZXBM1017ST20TC | 功能描述:马达/运动/点火控制器和驱动器 1-PHASE BLDC Motor Controller RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
| ZXBM1021 | 制造商:DIODES 制造商全称:Diodes Incorporated 功能描述:SINGLE PHASE VARIABLE SPEED MOTOR CONTROL PRE-DRIVER |
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