Owner manual

AM4961A
Document number: DS36626 Rev. 1 - 2
3 of 17
www.diodes.com
October 2013
© Diodes Incorporated
AM4961A
A Product Line of
Diodes Incorporated
NEW PRODUCT
Functional Block Diagram
Lock Shutdown
and
Auto Restart
Voltage
Reference
Hall Bias
Thermal Shutdown
Hysteresis Amp
Control
Circuit
Oscillation Circuit
CT
VCC
VREF
HB
HIN+
HIN-
VMIN
VPWM
COSC
GND
PGND
OUT1
OUT2
RD
FG
2 (3)
11 (12)
9 (10)
8 (9)
10 (11)
3 (4)
4 (5)
5 (6)
13 (14)
(16)
14 (15)
1 (1)
7 (8)
6 (7)
12 (13)
Pre -driver
20
Ω
20
Ω
A (B): A for HTSSOP-14 pins B for SSOP-16 pins
Truth Table
HIN- HIN+ COSC (Note 5) CT OUT1 OUT2 FG RD Mode
H L
H
L
H L L
L
Rotation (Drive)
L H L H OFF
H L
L
OFF L L
Rotation (Recirculate)
L H L OFF OFF
H L
H
H
H OFF L
OFF Lock Protection
L H OFF H OFF
H L
L
OFF OFF L
L H OFF OFF OFF
Note: 5. V
OSC
(H)>V
PWM
, V
OSC
(L)<V
PWM
.