Diodes AM4963/AM4963R - Manual (Page 4)

Data Sheet
Single Phase Full Wave Direct PWM Motor Driver AM4963/AM4963R
Sep. 2011 Rev. 1. 0 BCD Semiconductor Manufacturing Limited
4
Functional Block Diagram
Lock Shutdown
and
Auto Restart
Thermal
Shutdown
Hysteresis Amp
Control
Circuit
Triangle Wave
CT
VCC
RADJ
HIN+
HIN-
VMIN
PWM
CF
PGND
OUT1
OUT2
RD
FG
1 (2)
Pre-driver
V+
2 (3)
3 (4)
4 (5)
5 (6)
6 (7)
6 (7)
9 (10)
7 (8)
10 (11)
11 (12)
12 (13)
14 (16)
(1)
V+ V+
V+
V+
104k
42k
90k
54k
51k
56k
93k
18k
17k
RT
TL
8 (9)
TH
13 (15)
V
RE
G
A (B)
A for HTSSOP-14
B for SSOP-16
Figure 3. Functional Block Diagram of AM4963/AM4963R
Truth Table
Items IN- IN+ VCF CT OUT1 OUT2 FG RD Mode
1 H L H L L Rotation
2 L H
L
L H Off PWM Off
3 H L Off L L
Rotation
Recirculation
4 L H
H
L
L Off Off
L (ON)
PWM Off
5 H L H Off L
6 L H
L H
Off H Off
H (OFF) Lock Protection