參數(shù)資料
型號(hào)： 2916
廠商： Allegro MicroSystems, Inc.
英文描述： FAN 12VDC FLIGHT II 80 FE12H3
中文描述： 雙全橋PWM電機(jī)驅(qū)動(dòng)
文件頁數(shù)： 5/8頁
文件大?。?/td> 1360K
代理商： 2916
2916
DUAL FULL-BRIDGE
MOTOR DRIVER
www.allegromicro.com
5
LOGIC CONTROL OF OUTPUT CURRENT
Two logic level inputs (l
and I
) allow digital selection of the motor
winding current at 100%, 67%, 33%, or 0% of the maximum level per
the table. The 0% output current condition turns OFF all drivers in the
bridge and can be used as an OUTPUT ENABLE function.
CURRENT-CONTROL TRUTH TABLE
l
0
I
1
Output Current
L
L
V
REF
/10 R
S
= I
TRIP
V
REF
/15 R
S
= 2/3 I
TRIP
V
REF
/30 R
S
= 1/3 I
TRIP
0
H
L
L
H
H
H
These logic level inputs greatly enhance the implementation of
μP-controlled drive formats.
During half-step operations, the l
and l
allow the μP to control the
motor at a constant torque between all positions in an eight-step
TYPICAL APPLICATION
sequence. This is accomplished by digitally
selecting 100% drive current when only one
phase is ON and 67% drive current when two
phases are ON. Logic highs on both l
and l
1
turn OFF all drivers to allow rapid current
decay when switching phases. This helps to
ensure proper motor operation at high step
rates.
The logic control inputs can also be
used to select a reduced current level (and
reduced power dissipation) for ‘hold’ condi-
tions and/or increased current (and available
torque) for start-up conditions.
GENERAL
The PHASE input to each bridge
determines the direction motor winding
current flows. An internally generated
deadtime (approximately 2 μs) prevents
crossover currents that can occur when
switching the PHASE input.
All four drivers in the bridge output can
be turned OFF between steps (l
= l
2.4 V)
resulting in a fast current decay through the
internal output clamp and flyback diodes. The
fast current decay is desirable in half-step and
high-speed applications. The PHASE, l
0
,and I
1
inputs float high.
Varying the reference voltage (V
)
provides continuous control of the peak load
current for micro-stepping applications.
Thermal protection circuitry turns OFF
all drivers when the junction temperature
reaches +170°C. It is only intended to protect
the device from failures due to excessive
junction temperature and should not imply
that output short circuits are permitted. The
output drivers are re-enabled when the
junction temperature cools to +145°C.
The UDN2916B/EB/LB output drivers
are optimized for low output saturation
voltages—less than 1.8 V total (source plus
sink) at 500 mA. Under normal operating
conditions, when combined with the excellent
thermal properties of the batwing package
design, this allows continuous operation of
both bridges simultaneously at 500 mA.
FROM
μP
V
REF
Dwg. EP-008B1
V
BB
FROM
μP
1
2
3
4
5
6
7
8
9
9
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
θ
2
V
CC
2
V
BB
1
V
REF
+5 V
STEPPER
MOTOR
R
S
R
S
R
C
R
C
R
T
C
T
C
C
C
C
+
P
P
θ
1
820 pF
56 k
C
T
820 pF
56 k
R
T
相關(guān)PDF資料
PDF描述
2917 DUAL FULL-BRIDGE PWM MOTOR DRIVER
2918 DUAL FULL-BRIDGE PWM MOTOR DRIVER
2919 DUAL FULL-BRIDGE PWM MOTOR DRIVER
2920 20 MHz BIPOLAR LOGARITHMIC AMPLIFIER
2927 DUAL FULL-BRIDGE PWM MOTOR DRIVER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
2916 BK001 功能描述:HOOK-UP STRND 16AWG BLK 1000' 制造商:alpha wire 系列:ThermoThin 零件狀態(tài):在售 電纜類型:電子線 線規(guī):16 AWG 導(dǎo)線股數(shù):19/0.0117" 導(dǎo)體材料:銅，鍍鎳 護(hù)套（絕緣）材料:含氟聚合物 護(hù)套（絕緣）直徑:0.069"（1.75mm） 護(hù)套（絕緣）厚度:0.006"（0.15mm） 長度:1000.0'（304.8m） 電壓:600V 工作溫度:-150°C ~ 300°C 套管顏色:黑色 等級(jí):UL 式 11540 特性:耐化學(xué)腐蝕，高溫，防紫外線 標(biāo)準(zhǔn)包裝:1
2916 BK005 功能描述:HOOK-UP STRND 16AWG BLACK 100' 制造商:alpha wire 系列:ThermoThin 零件狀態(tài):在售 電纜類型:電子線 線規(guī):16 AWG 導(dǎo)線股數(shù):19/0.0117" 導(dǎo)體材料:銅，鍍鎳 護(hù)套（絕緣）材料:含氟聚合物 護(hù)套（絕緣）直徑:0.069"（1.75mm） 護(hù)套（絕緣）厚度:0.006"（0.15mm） 長度:100.0'（30.5m） 電壓:600V 工作溫度:-150°C ~ 300°C 套管顏色:黑色 等級(jí):UL 式 11540 特性:耐化學(xué)腐蝕，高溫，防紫外線 標(biāo)準(zhǔn)包裝:1
2916 BL001 功能描述:HOOK-UP STRND 16AWG BLUE 1000' 制造商:alpha wire 系列:ThermoThin 零件狀態(tài):在售 電纜類型:電子線 線規(guī):16 AWG 導(dǎo)線股數(shù):19/0.0117" 導(dǎo)體材料:銅，鍍鎳 護(hù)套（絕緣）材料:含氟聚合物 護(hù)套（絕緣）直徑:0.069"（1.75mm） 護(hù)套（絕緣）厚度:0.006"（0.15mm） 長度:1000.0'（304.8m） 電壓:600V 工作溫度:-150°C ~ 300°C 套管顏色:藍(lán)色 等級(jí):UL 式 11540 特性:耐化學(xué)腐蝕，高溫，防紫外線 標(biāo)準(zhǔn)包裝:1
2916 BL005 功能描述:HOOK-UP STRND 16AWG BLUE 100' 制造商:alpha wire 系列:ThermoThin 零件狀態(tài):在售 電纜類型:電子線 線規(guī):16 AWG 導(dǎo)線股數(shù):19/0.0117" 導(dǎo)體材料:銅，鍍鎳 護(hù)套（絕緣）材料:含氟聚合物 護(hù)套（絕緣）直徑:0.069"（1.75mm） 護(hù)套（絕緣）厚度:0.006"（0.15mm） 長度:100.0'（30.5m） 電壓:600V 工作溫度:-150°C ~ 300°C 套管顏色:藍(lán)色 等級(jí):UL 式 11540 特性:耐化學(xué)腐蝕，高溫，防紫外線 標(biāo)準(zhǔn)包裝:1
2916 BR001 功能描述:HOOK-UP STRND 16AWG BRN 1000' 制造商:alpha wire 系列:ThermoThin 零件狀態(tài):在售 電纜類型:電子線 線規(guī):16 AWG 導(dǎo)線股數(shù):19/0.0117" 導(dǎo)體材料:銅，鍍鎳 護(hù)套（絕緣）材料:含氟聚合物 護(hù)套（絕緣）直徑:0.069"（1.75mm） 護(hù)套（絕緣）厚度:0.006"（0.15mm） 長度:1000.0'（304.8m） 電壓:600V 工作溫度:-150°C ~ 300°C 套管顏色:棕色 等級(jí):UL 式 11540 特性:耐化學(xué)腐蝕，高溫，防紫外線 標(biāo)準(zhǔn)包裝:1
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