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参数资料
| 型号： | L6258 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 运动控制电子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, 1.5 A, PDSO36 |
| 封装： | ROHS COMPLIANT, SOP-36 |
| 文件页数： | 5/32页 |
| 文件大小： | 364K |
| 代理商： | L6258 |
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L6258
Functional description
Doc ID 4588 Rev 10
13/32
2.3
Phase input ( PH )
The logic level applied to this input determines the direction of the current flowing in the
winding of the motor.
High level on the phase input causes the motor current flowing from OUT_A to OUT_B
through the load.
2.4
Triangular generator
This circuit generates the two triangular waves TRI_0 and TRI_180 internally used to
generate the duty cycle variation of the signals driving the output stage in bridge
configuration.
The frequency of the triangular wave defines the switching frequency of the output, and can
be adjusted by changing the capacitor connected at TR1_CAP pin:
where: K = 1.5 x 10-5
2.5
Charge pump circuit
To ensure the correct driving of the high side drivers a voltage higher than Vs is supplied on
the Vboot pin. This boostrap voltage is not needed for the low side power DMOS transistors
because their sources terminals are grounded. To produce this voltage a charge pump
method is used. It is made by using two external capacitors; one connected to the internal
oscillator (CP) and the other (Cboot) to storage the overvoltage needed for the driving the
gates of the high side DMOS. The value suggested for the capacitors are:
LHL
L
88.9
LL
H
92.1
LL
H
L
95.2
LL
L
H
98.4
LL
100
Table 5.
Current levels (continued)
I3
I2
I1
I0
Current level
% of IMAX
F
ref
K
C
----
=
Table 6.
Charge pump capacitor's values
Component name
Component's function
Value
Unit
Cboot
Storage capacitor
100
nF
CP
Pump capacitor
10
nF
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相关代理商/技术参数 |
参数描述 |
|---|---|
| L6258_07 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:PWM controlled high current DMOS universal motor driver |
| L6258A | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Stepper Motor Controller/Driver |
| L6258E | 功能描述:马达/运动/点火控制器和驱动器 Dual Full Bridge 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 |
| L6258E_07 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:PWM controlled high current DMOS universal motor driver |
| L6258EA | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:PWM controlled high current DMOS universal motor driver |
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