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參數(shù)資料
| 型號(hào)： | Si9978DW |
| 廠商： | Vishay Intertechnology,Inc. |
| 英文描述： | Configurable H-Bridge Driver(可配置的H橋驅(qū)動(dòng)器) |
| 中文描述： | 可配置的H橋驅(qū)動(dòng)器（可配置的魔橋驅(qū)動(dòng)器） |
| 文件頁(yè)數(shù)： | 5/6頁(yè) |
| 文件大?。?/td> | 172K |
| 代理商： | SI9978DW |
Si9978DW
Vishay Siliconix
FaxBack 408-970-5600, request 70011
www.siliconix.com
S-60752—Rev. D, 05-Apr-99
5
Pin 8: CL/FAULT
B
This is an open drain output which is active low. When the
MODE pin is at logic “1”, this pin functions as CL and
indicates that the H-bridge is in current limit. It stays low for
the duration of the current limit one-shot. With the MODE pin
at logic “0”, it serves as the FAULT output for half-bridge B to
indicate when an undervoltage or overcurrent condition is
detected. When indicating an overcurrent condition, the output
stays low for the duration of the current limit one-shot. The
FAULT output resets automatically when the condition clears.
Pin 9: FAULT/FAULT
A
This is an open drain output which is switched low when an
undervoltage or overcurrent condition is detected. When
indicating an overcurrent condition, the output stays low for
the duration of the current limit one-shot. When the MODE
pin is at logic “1”, this pin is the H-bridge FAULT output. With
the MODE pin at logic “0”, it serves as the FAULT output for
half-bridge A. The FAULT output resets automatically when
the condition clears.
Pin 10: NC
No internal connection.
Pin 11: R
A
/C
A
The timing resistor and capacitor for the current limit one-shot
are connected to this pin. The values of the resistor and
capacitor determine the off time set by the one-shot. The
one-shot is triggered when the current limit comparator
detects an overcurrent condition.
Pin 12: R
B
/C
B
The timing resistor and capacitor for the current limit one-shot
are connected to this pin. The values of the resistor and
capacitor determine the off time set by the one-shot. The
one-shot is triggered when the current limit comparator
detects an overcurrent condition.
Pin 13: IL
A
+ and Pin 14, IL
B
+
These are the overcurrent sense inputs. Internally, they are
connected to the noninverting inputs of the current limit
comparators. Externally they are connected to the source(s)
of the low-side MOSFET(s) and the current sense resistor.
Pin 15: GND
The GND pin is the ground return for V+ and the ground
reference for the logic. Also, this is the ground reference input
for the current limit comparators and is connected to the
ground side of the internal 100-mV references. This pin
should be connected directly to the ground side of the current
sensing resistors.
Pin 16: GB
B
and Pin 20, GB
A
These pins drive the gates of the low-side power MOSFETs.
Pin 17: GT
B
and Pin 21, GT
A
These pins drive the gates of the high-side power MOSFETs.
Pin 18: S
B
and Pin 22, S
A
These are the source connections of the high-side power
MOSFETs, the drain of the external low-side power MOSFET,
the negative terminal of the bootstrap capacitor, and the
output for each half-bridge.
Pin 19: CAP
B
and Pin 23, CAP
A
These are the connections for the positive terminals of the
bootstrap capacitors C
BA
and C
BB
. A 0.01-μF capacitor can
be used for most applications.
Pin 24: V+
This is the only external power supply required for the
Si9978DW, and must be the same supply used to power the
H-bridge it is driving. The Si9978DW powers the low-voltage
logic, low-side gate driver, and bootstrap/ charge pump
circuits from self-contained voltage regulators which require
only a bootstrap capacitor on the CAP pins.
No voltage sensing circuitry monitors V+ directly; however, the
low-voltage, internally generated supply and the bootstrap
voltage (which are derived from V+) are directly protected by
undervoltage monitors.
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| SI9978DW-E3 | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 Half Bridge Driver RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類(lèi)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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| SI9978DW-T1-E3 | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 Config H-Bridge MOSFET RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類(lèi)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 |
| SI9979 | 制造商:VISHAY 制造商全稱(chēng):Vishay Siliconix 功能描述:3-Phase Brushless DC Motor Controller |
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