參數(shù)資料
型號: LB1897H
元件分類: 運動控制電子
英文描述: BRUSHLESS DC MOTOR CONTROLLER, PDSO34
封裝: 0.375 INCH, HSSOP-28
文件頁數(shù): 11/11頁
文件大?。?/td> 159K
代理商: LB1897H
LB1897H
No.8804-9/11
Block Diagram
V
W
U
Forward/
backward
selection
Control Amplifier1
Feedback Amplifier
TSD
L
og
r
ev
er
se
co
n
ver
si
on
an
d
dif
fe
rent
ia
l
dis
tr
ibu
tion
FG Amplifier
Upper over-
saturation
preventive control
Output Stage
VS
U-OUT
U
V
W
gm
Drive distribution circuit
and lower over-saturation
preventive control
V-OUT
W-OUT
Rf (PWR)
Rf (SENSE)
GSENSE
FGIN-
FGIN+
FGOUT
Bandgap 1.2V
VCC
GND
FR
LIM
CTL
LIMREF
FC
UIN+
UIN-
VIN+
VIN-
WIN+
WIN-
Reference
voltage
Differential
distribution
and torque
ripple
compensation
block
H
al
lin
pu
ts
yn
the
siz
ing
blo
ck
(L
ine
ar
ma
tr
ix
)
S
yn
th
et
ic
ou
tp
ut
log
c
ompr
es
si
on
b
lo
ck
12
Control Amplifier2
20
19
22
27
28
1
24
4
5
8
9
11
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
15
16
17
18
13
6
7
21
14
gm
10
FG
CLIP
So
ft
li
m
ite
r
23
GND
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