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參數(shù)資料
| 型號(hào)： | MC34920 |
| 廠商： | 飛思卡爾半導(dǎo)體(中國)有限公司 |
| 英文描述： | 2.8 Ohm(Typ) Quad H-Bridge Motor Driver(2.8歐（典型值）四H橋電機(jī)驅(qū)動(dòng)器) |
| 中文描述： | 2.8歐姆（典型值）四H橋電機(jī)驅(qū)動(dòng)器（2.8歐（典型值）四魔橋電機(jī)驅(qū)動(dòng)器） |
| 文件頁數(shù)： | 22/28頁 |
| 文件大小： | 813K |
| 代理商： | MC34920 |
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34920
22
Go to: www.freescale.com
feedback voltage, for the required output regulated voltage, to
equal the internal regulator reference voltages of 2.50 V ±2%.
Output current sensing is implemented by sensing the
voltage across an internal sense resistor connected between
VB+ and the drain of the internal MOSFET. Current is
measured on a cycle-by-cycle basis. The purpose of this
current sense is to prevent any damage to the 34920 and its
associated external components.
Note
There is a V2_Enable bit in the Serial Communication
Input register (bit 1). When this bit is set to logic [1], the V2
voltage regulator is enabled. When this bit = logic [0], the V2
voltage regulator is disabled. Refer to
Tables 3
through
7
,
pp. 15–19, for a description of this bit. The V2_Enable bit will
also disable the motor drivers.
V
b
Generator
The boost voltage generator circuit is a charge pump circuit
using two external capacitors to provide the necessary voltage
to drive internal 34920 loads. This circuit is driven at a
frequency of 200 kHz ±25 kHz.
The V
b
generator is utilized exclusively by the 34920. There
is no provision for external loading. Also, there is no disable
feature for the V
b
generator.
Motor Drive Systems
The 34920 provides two motor drivers. Both drivers are
mode selectable to be either a multi-current level bi-directional
driver for bipolar step motors or a bi-directional DC motor driver
with PWM control. The DR1_MODE (Mode1) and DR2_MODE
(Mode2) terminals select whether the appropriate motor driver
will drive a step motor (terminal = 1) or DC motor (terminal = 0).
Figures 5
and
6
depict the two motor configurations.
Figure 5. Simplified Step Application Diagram Showing 1 of 2 Step Drive Circuits
DR1_MODE
VB+
Phase A H-Bridge
Phase B H-Bridge
DR1_DIR_DCM
SDR1_CURR_I0 PHASEA
SDR1_CURR_I1 PHASEA
SDR1_DIR_PH A
DR1A1
DR1SENSE1
DR1A2
DR1B2
SDR1_DIR_PH_B
SDR1_CURR_I1_PHASEB
SDR1_CURR_I0_PHASEB
DR1B1
DR1SENSE2
DR1PWM
Step
Motor
34920
DR1
F
Freescale Semiconductor, Inc.
For More Information On This Product,
n
.
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| MC34920EI | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 Motor Driver RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| MC34920EIR2 | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 STD KATANA PB FREE RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| MC34921 | 制造商:SPC Multicomp 功能描述:HEADER R/ANGLE 5WAY 制造商:SPC Multicomp 功能描述:HEADER, R/ANGLE, 5WAY 制造商:SPC Multicomp 功能描述:WIRE-BOARD CONNECTOR, RCPT, 5POS, 4.2MM; Series:2266(5566)S; Pitch Spacing:4.2mm; Contact Termination:Through Hole Right Angle; No. of Contacts:5; No. of Rows:1; Connector Mounting:PCB; Gender:Receptacle; Contact Material:Brass ;RoHS Compliant: Yes |
| MC34921AE | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 DUAL PWM DC MOTOR DRIVE RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| MC34921AER2 | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 DUAL PWM DC MOTOR DRIVE RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
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