參數(shù)資料
型號(hào): LT1162ISW
廠商: LINEAR TECHNOLOGY CORP
元件分類(lèi): 功率晶體管
英文描述: Dual 1-of-4 Data Selectors/Multiplexers With 3-State Outputs 16-SOIC 0 to 70
中文描述: 1.5 A FULL BRDG BASED MOSFET DRIVER, PDSO24
封裝: 0.300 INCH, PLASTIC, SOP-24
文件頁(yè)數(shù): 11/16頁(yè)
文件大?。?/td> 347K
代理商: LT1162ISW
11
LT1160/LT1162
APPLICATIO
S I
FOR
ATIO
U
W
U
U
+
+
IN TOP
IN BOTTOM
BOOST
T GATE DR
T GATE FB
T SOURCE
B GATE DR
B GATE FB
LT1160
HV
V
OUT
R
GS
R
SENSE
1160 F02
12V
REF PWM
OUT A
OUT A
SV
+
PV
+
Figure 2. Adding Synchronous Switching to a Step-Down Switching Regulator
Motor Drive Applications
In applications where rotation is always in the same
direction, a single LT1160 controlling a half-bridge can be
used to drive a DC motor. One end of the motor may be
connected either to supply or to ground as seen on Figure
3. A motor in this configuration is controlled by its inputs
which give three alternatives: run, free running stop (coast-
ing) and fast stop (“plugging” braking, with the motor
shorted by one of the MOSFETs).
To drive a DC motor in both directions the LT1162 can be
used to drive an H-bridge output stage. In this configura-
tion the motor can be made to run clockwise, counter-
clockwise, stop rapidly (“plugging” braking) or free run
(coast) to a stop. A very rapid stop may be achieved by
reversing the current, though this requires more careful
design to stop the motor dead. In practice a closed-loop
control system with tachometric feedback is usually
necessary.
The motor speed in these examples can be controlled by
switching the drivers with pulse width modulated square
waves. This approach is particularly suitable for micro-
computers/DSP control loops.
Figure 3. Driving a Supply Referenced Motor
SV
+
PV
+
BOOST
T GATE DR
T GATE FB
T SOURCE
B GATE DR
B GATE FB
PGND
LT1160
12V
1160 F03
HV
+
IN TOP
IN BOTTOM
相關(guān)PDF資料
PDF描述
LT1160CS TRANS PNP LF 400VCEO .1A TO-126
LT1160IN Half-/Full-Bridge N-Channel Power MOSFET Drivers
LT1160IS Half-/Full-Bridge N-Channel Power MOSFET Drivers
LT1161CSW Quad Protected High-Side MOSFET Driver
LT1161ISW Quad Protected High-Side MOSFET Driver
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