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參數(shù)資料
| 型號： | MC34923 |
| 廠商： | 飛思卡爾半導(dǎo)體(中國)有限公司 |
| 英文描述： | Full-Bridge PWM Motor Driver(全橋PWM電機驅(qū)動器) |
| 中文描述： | 全橋PWM電動機驅(qū)動器（全橋脈寬調(diào)制電機驅(qū)動器） |
| 文件頁數(shù)： | 10/16頁 |
| 文件大?。?/td> | 508K |
| 代理商： | MC34923 |
34923
10
Go to: www.freescale.com
FUNCTIONAL DESCRIPTION
Serial Interface
The 34923 is controlled via a 3-wire (clock, data, strobe)
serial port. The programmable functions allow maximum
flexibility in configuring the PWM to the motor drive
requirements. The serial data is clocked in starting with bit D19.
D0–D1, Blank Time
The current-sense comparator is blanked when any output
driver is switched on in accordance with the table below. f
osc
is
the oscillator input frequency.
D2–D6, Fixed Off-Time
A five-bit word sets the fixed off-time for internal PWM
current control. The off time is defined as follows:
t
off
= (8[1 + N]/f
osc
) - 1/f
osc
where N = 0 to 31.
For example, with an oscillator frequency of 4.0 MHz, the off-
time is adjusted from 1.75
μ
s to 63.75
μ
s in increments of
2.0
μ
s.
D7–D10, Fast Decay Time
A four-bit word sets the fast decay portion of the fixed off-time
for the internal PWM control circuitry. This will only have impact
if the mixed current decay mode is selected (via bit D17 and the
PWMMODE input pin). For t
fd
> t
off
, the device will effectively
operate in the fast decay mode. The fast decay portion is
defined as follows:
t
fd
= (8[1 + N]/f
osc
) - 1/f
osc
where N = 0 to 15.
For example, with an oscillator frequency of 4.0 MHz, the fast
decay time is adjusted from 1.75
μ
s to 31.75
μ
s in increments
of 2.0
μ
s.
D11–D12, Synchronous Rectification Control
The active mode prevents reversal of load current by turning
off synchronous rectification when a zero current level is
detected. The passive mode will allow reversal of current but
will turn off the synchronous rectifier circuit if the load current
inversion ramps up to the current limit set by V
REF
/R
S
.
D13, External PWM Decay Mode
Bit D13 determines the current decay mode when using
PWM/ENABLE chopping for external PWM current control.
Bit
Function
D0
Blank Time LSB
D1
Blank Time MSB
D2
Fixed Off-Time LSB
D3
Fixed Off-Time Bit 1
D4
Fixed Off-Time Bit 2
D5
Fixed Off-Time Bit 3
D6
Fixed Off-Time MSB
D7
Fast Decay Time LSB
D8
Fast Decay Time Bit 1
D9
Fast Decay Time Bit 2
D10
Fast Decay Time MSB
D11
Synchronous Rectification Mode
D12
Synchronous Rectification Enable
D13
External PWM Decay Mode
D14
Enable Logic
D15
Direction Logic
D16
Divisor SPAN Select
D17
Internal PWM Mode
D18
Test Mode
D19
Sleep Mode
D0
D1
Blank Time
0
0
4/f
osc
1
0
6/f
osc
0
1
12/f
osc
1
1
24/f
osc
D11
D12
Synchronous
Rect. Control
0
0
Disabled
0
1
Active
1
0
Disabled
1
1
Passive
D13
Current
Decay Mode
0
Fast
1
Slow
F
Freescale Semiconductor, Inc.
For More Information On This Product,
n
.
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| MC34923DW | 功能描述:馬達/運動/點火控制器和驅(qū)動器 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 |
| MC34923EG | 功能描述:馬達/運動/點火控制器和驅(qū)動器 Full-Bridge PWM 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 |
| MC34923EGR2 | 功能描述:馬達/運動/點火控制器和驅(qū)動器 VERSION 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 |
| MC34925 | 制造商:SPC Multicomp 功能描述:HEADER VERTICAL 4WAY 制造商:PRIVATE LABEL 功能描述:HEADER, VERTICAL, 4WAY, Product Range:MULTICOMP - MC34 Series, Contact Terminati 制造商:SPC Multicomp 功能描述:WIRE-BOARD CONNECTOR, RCPT, 4POS, 4.2MM, Series:2266(5566)RA, Pitch Spacing:4.2mm, Contact Termination:Through Hole Vertical, No. of Contacts:4, No. of Rows:1, Connector Mounting:PCB, Gender:Receptacle, Contact Material:Brass , RoHS Compliant: Yes |
| MC34927 | 制造商:SPC Multicomp 功能描述:HEADER VERTICAL 5WAY 制造商:SPC Multicomp 功能描述:HEADER, VERTICAL, 5WAY 制造商:SPC Multicomp 功能描述:WIRE-BOARD CONNECTOR, RCPT, 5POS, 4.2MM; Series:2266(5566)RA; Pitch Spacing:4.2mm; Contact Termination:Through Hole Vertical; No. of Contacts:5; No. of Rows:1; Connector Mounting:PCB; Gender:Receptacle; Contact Material:Brass ;RoHS Compliant: Yes |
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