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参数资料
| 型号： | MC33395DWB |
| 厂商： | MOTOROLA INC |
| 元件分类： | 运动控制电子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, PDSO32 |
| 封装： | PLASTIC, SOIC-32 |
| 文件页数： | 3/16页 |
| 文件大小： | 351K |
| 代理商： | MC33395DWB |
MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA
33395
11
Note that the drivers are disabled during an overtemperature
or overvoltage fault. A flip-flop keeps the drive off until the
following PWM cycle. This prevents erratic operation during
fault conditions. The current limit circuit also uses a flip-flop for
latching the drive off until the following PWM cycle.
Note PWM must be toggled after POR, Thermal Limit, or
overvoltage faults to re-enable the gate drivers.
VGDH
The VGDH terminal is used to provide a gate drive signal to a
reverse battery protection MOSFET. If reverse battery
protection is desired, VIGN would be applied to the source of an
external MOSFET, and the drain of the MOSFET would then
deliver a "protected" supply voltage (VIGNP) to the three phase
array of external MOSFETs as well as the supply voltage to the
VIGNP terminal of the IC.
In a reverse polarity event (e.g., an erroneous installation of
the system battery), the VGDH signal will not be supplied to the
external protection MOSFET, and the MOSFET will remain off
and thus prevent reverse polarity from being applied to the load
and the VIGNP supply terminal of the IC.
High-Side Gate Drive Circuits
Outputs GDH1, GDH2, and GDH3 provide the elevated drive
voltage to the high-side external MOSFETs (HS1, HS2, and
the peak currents required to turn ON and hold ON the high-
side MOSFETs, as well as turn OFF the MOSFETs. These gate
drive circuits are powered from an internal charge pump, and
therefore compensate for voltage dropped across the load that
is reflected to the source-gate circuits of the high-side
MOSFETs.
Low-Side Gate Drive Circuits
Outputs GDL1, GDL2, and GDL3 provide the drive voltage to
the low-side external MOSFETs (LS1, LS2, and LS3; see
Figure 3). These gate drive outputs supply the peak currents
required to turn ON and hold ON the low-side MOSFETs, as
well as turn OFF the MOSFETs.
VDD Fuse
The VDD supply of the 33395 IC has an internal fuse, which
will blow and set all outputs of the device to OFF, if the VDD
voltage exceeds that stated in the maximum rating section of
the data sheet. When this fuse blows, the device is permanently
disabled.
ISENS Inputs
The +Isens and -Isens terminals are inputs to the internal
current sense comparator. In a typical application, these would
receive a a low-pass filtered voltage derived from a current
sense resistor placed in series with the ground return of the
three-phase output bridge. When triggered by the comparator,
the CL (current limit) bit of the internal error register is set, and
the output gate drive pairs (i.e., GDH1 and GDL1, GDH2 and
GDL2, GDH3 and GDL3), are controlled such that current will
cease flowing through the load (refer to Table 1, Truth Table,
Overtemperature and Overvoltage Shutdown
Circuits
Internal monitoring is provided for both over temperature
conditions and over voltage conditions. When any of these
conditions presents itself to the IC, the corresponding internally
set bits of the error register are set, and the output gate drive
pairs (i.e., GDH1 and GDL1, GDH2 and GDL2, GDH3 and
GDL3), are controlled such that current will cease flowing
through the load (refer to Table 1).
LSE and HSE Input Circuits
The low-side enable input terminals (LSE1, LSE2, LSE3)
and high-side enable input terminals (HSE1, HSE2, HSE3) form
the input pairs (HSE1 and LSE1, HSE2 and LSE2, HSE3 and
LSE3) which set the logic states of the output gate drive pairs
(i.e., GDH1 and GDL1, GDH2 and GDL2, GDH3 and GDL3) in
accordance with the logic set forth in the Truth Table (page 12).
Typically these inputs are supplied from an MCU or DSP to
provide the phasing of the currents applied to a brushless dc
motor's stator coils via the output MOSFET pairs.
PWM Input
The pulse width modulation input provides a single input
terminal to accomplish PWM modulation of the output pairs in
accordance with the states of the Mode 0 and Mode 1 inputs as
set forth in the Truth Table (page 12).
Mode Selection Inputs
The mode selection inputs (Mode 0 and Mode 1) determine
the PWM implementation of the output pairs in accordance with
the logic set forth in the Truth Table (page 12). PWM'ing can
thus be set to occur either on the high-side MOSFETs or the
low-side MOSFETs, or can be set to occur on both the high-side
and low-side MOSFETs as "complementary chopping".
Test Terminal
This terminal should be grounded or left floating (i.e., do not
connect it to the printed circuit board). It is used by the
automated test equipment to verify proper operation of the
internal overtemperature shut down circuitry. This terminal is
susceptible to latch-up and therefore may cause erroneous
operation or device failure if connected to external circuitry.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MC33395DWBR2 | 功能描述:马达/运动/点火控制器和驱动器 TPD 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 |
| MC33395EW | 功能描述:马达/运动/点火控制器和驱动器 TPD - THREE PHASE DRIVER 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 |
| MC33395EWR2 | 功能描述:马达/运动/点火控制器和驱动器 TPD - THREE PHASE DRIVER 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 |
| MC33395TDWB | 功能描述:马达/运动/点火控制器和驱动器 TPDT 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 |
| MC33395TDWBR2 | 功能描述:马达/运动/点火控制器和驱动器 TPDT 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 |
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