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參數(shù)資料
| 型號(hào)： | A3980 |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | Automotive DMOS Microstepping Driver with Translator |
| 中文描述： | 汽車的DMOS微步驅(qū)動(dòng)器，帶有翻譯 |
| 文件頁數(shù)： | 13/18頁 |
| 文件大?。?/td> | 514K |
| 代理商： | A3980 |
13
Worcester, Massachusetts 01615-0036 (508) 853-5000
115 Northeast Cutoff, Box 15036
www.allegromicro.com
D
2
A3980
Automotive DMOS Microstepping Driver with Translator
Application Information
The A3980 is a power circuit, therefore careful consider-
ation must be given to power dissipation and the effects
of high currents on interconnect and supply wiring.
Power Dissipation.
A
fi
rst order approximation of
the power dissipation in the A3980 can be determined
by examining the power dissipation in each of the
two full-bridges during each of the operation modes.
When synchronous recti
fi
cation is used, current
fl
ow
most of the time through the DMOS FETs that are
switched on. When synchronous recti
fi
cation is not
used, the current
fl
ows through the body diode of
the DMOS FETs during the decay phase. The use of
fast or slow decay also affects the dissipation. All the
above combinations can be calculated from
fi
ve basic
DMOS output states, shown in the following illustrations.
M
+
Drive Current Ramp
Diagonally opposite DMOS
output transistors are on. Cur-
rent
fl
ows from positive supply
through load to ground. Used in
all combinations.
Dissipation is I
2
R losses in the
DMOS transistors:
P
D
= I
2
(R
DSONH
+ R
DSONL
)
Synchronous Slow Decay
Both low-side DMOS output
transistors are on. Current circu-
lates through both transistors and
the load.
Dissipation is I
2
R losses in the
DMOS transistors:
P
SS
= I
2
(2
×
R
DSONL
)
Synchronous
Fast Decay
Diagonally opposite DMOS output
transistors are on. Current
fl
ows
from ground through load to posi-
tive supply.
Dissipation is I
2
R losses in the
DMOS transistors:
P
SF
= I
2
(R
DSONH
+ R
DSONL
)
Non-Synchronous Slow Decay
One low-side DMOS output tran-
sistor and one body diode conduct-
ing. Current circulates through the
diode, the transistor, and the load.
Dissipation is I
2
R losses in the
DMOS transistors plus IV loss in
the diode:
P
NS
= (I
2
×
R
DSONL
) + (I
×
V
F
)
Non-Synchronous Fast Decay
Diagonally opposite body diodes
conducting. Current
fl
ows from
ground through load to positive
supply.
Dissipation is IV losses in the
diodes:
P
NF
= I (V
FH
+ V
Fl
)
M
+
M
+
M
+
M
+
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| A3980_06 | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:Automotive DMOS Microstepping Driver with Translator |
| A3980KLP | 功能描述:IC DRIVER MICROSTEPPING 28-TSSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 電機(jī)和風(fēng)扇控制器，驅(qū)動(dòng)器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 應(yīng)用:直流電機(jī)驅(qū)動(dòng)器，步進(jìn)電機(jī)驅(qū)動(dòng)器 評(píng)估套件:- 輸出數(shù):1 或 2 電流 - 輸出:750mA 電壓 - 負(fù)載:10 V ~ 40 V 電源電壓:4.5 V ~ 5.5 V 工作溫度:-20°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-BFSOP（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:24-SOP 包裝:Digi-Reel® 其它名稱:MTS62C19A-HS105DKR |
| A3980KLP-T | 功能描述:IC MOTOR DRIVER MICROSTEP 28-TSS RoHS:是 類別:集成電路 (IC) >> PMIC - 電機(jī)和風(fēng)扇控制器，驅(qū)動(dòng)器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 應(yīng)用:直流電機(jī)驅(qū)動(dòng)器，步進(jìn)電機(jī)驅(qū)動(dòng)器 評(píng)估套件:- 輸出數(shù):1 或 2 電流 - 輸出:750mA 電壓 - 負(fù)載:10 V ~ 40 V 電源電壓:4.5 V ~ 5.5 V 工作溫度:-20°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-BFSOP（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:24-SOP 包裝:Digi-Reel® 其它名稱:MTS62C19A-HS105DKR |
| A3980KLP-T | 制造商:Allegro MicroSystems 功能描述:Driver IC Package/Case:28-TSSOP |
| A3980KLPTR | 功能描述:IC DRIVER MICROSTEPPING 28-TSSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 電機(jī)和風(fēng)扇控制器，驅(qū)動(dòng)器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 應(yīng)用:直流電機(jī)驅(qū)動(dòng)器，步進(jìn)電機(jī)驅(qū)動(dòng)器 評(píng)估套件:- 輸出數(shù):1 或 2 電流 - 輸出:750mA 電壓 - 負(fù)載:10 V ~ 40 V 電源電壓:4.5 V ~ 5.5 V 工作溫度:-20°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-BFSOP（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:24-SOP 包裝:Digi-Reel® 其它名稱:MTS62C19A-HS105DKR |
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