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參數(shù)資料
| 型號： | VNH3SP30TR-E |
| 廠商： | 意法半導(dǎo)體 |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Automotive fully integrated H-bridge motor driver |
| 中文描述： | 汽車完全集成的H橋電機驅(qū)動器 |
| 文件頁數(shù)： | 21/33頁 |
| 文件大?。?/td> | 561K |
| 代理商： | VNH3SP30TR-E |
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VNH3SP30-E
Application information
21/33
Possible origins of fault conditions may be:
OUT
A
is shorted to ground
→
overtemperature detection on high side A.
OUT
A
is shorted to V
CC
→
low side power MOSFET saturation detection
(a)
.
When a fault condition is detected, the user can know which power element is in fault by
monitoring the IN
A
, IN
B
, DIAG
A
/EN
A
and DIAG
B
/EN
B
pins.
In any case, when a fault is detected, the faulty leg of the bridge is latched off. To turn on the
respective output (OUT
X
) again, the input signal must rise from low to high level.
●
●
3.1
Reverse battery protection
Three possible solutions can be considered:
1.
a Schottky diode
D
connected to V
CC
pin
2.
an N-channel MOSFET connected to the GND pin (see
Figure 33: Typical application
circuit for DC to 10 kHz PWM operation short circuit protection on page 20
3.
a P-channel MOSFET connected to the V
CC
pin
The device sustains no more than -30A in reverse battery conditions because of the two
body diodes of the power MOSFETs. Additionally, in reverse battery condition the I/Os of
VNH3SP30-E will be pulled down to the V
CC
line (approximately -1.5V). A series resistor
must be inserted to limit the current sunk from the microcontroller I/Os. If I
Rmax
is the
maximum target reverse current through μC I/Os, the series resistor is:
3.2
Open load detection in Off mode
It is possible for the microcontroller to detect an open load condition by adding a simply
resistor (for example, 10k ohm) between one of the outputs of the bridge (for example,
OUT
B
) and one microcontroller input. A possible sequence of inputs and enable signals is
the following: IN
A
= 1, IN
B
= X, EN
A
= 1, EN
B
= 0.
normal condition: OUT
A
= H and OUT
B
= H
open load condition: OUT
A
= H and OUT
B
= L: In this case the OUT
B
pin is internally
pulled down to GND. This condition is detected on OUT
B
pin by the microcontroller as
an open load fault.
●
●
a.
An internal operational amplifier compares the Drain-Source MOSFET voltage with the internal reference (2.7V
Typ.). The relevant low side power MOS is switched off when its Drain-Source voltage exceeds the reference
voltage.
R
VIOs
VCC
–
IRmax
=
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| VNH5019A-E | 功能描述:馬達(dá)/運動/點火控制器和驅(qū)動器 Automotive H-Bridge 18mOhm 30A 41V VCC 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 |
| VNH5019ATR-E | 功能描述:馬達(dá)/運動/點火控制器和驅(qū)動器 Automotive H-Bridge 18mOhm 30A 41V VCC 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 |
| VNH5050A-E | 功能描述:馬達(dá)/運動/點火控制器和驅(qū)動器 Automotive H-Bridge 50mOhm 30A 41V VCC 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 |
| VNH5050ATR-E | 功能描述:馬達(dá)/運動/點火控制器和驅(qū)動器 Automotive H-Bridge 50mOhm 30A 41V VCC 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 |
| VNH50N04 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:FULLY AUTOPROTECTED POWER MOSFET |
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