MC33039_06 Datasheet, PDF (1/8 Pages) ON Semiconductor – Closed Loop Brushless Motor Adapter

MC33039, NCV33039
Closed Loop Brushless
Motor Adapter
The MC33039 is a high performance closed−loop speed control
adapter specifically designed for use in brushless DC motor control
systems. Implementation will allow precise speed regulation without
the need for a magnetic or optical tachometer. This device contains
three input buffers each with hysteresis for noise immunity, three
digital edge detectors, a programmable monostable, and an internal
shunt regulator. Also included is an inverter output for use in systems
that require conversion of sensor phasing. Although this device is
primarily intended for use with the MC33035 brushless motor
controller, it can be used cost effectively in many other closed−loop
speed control applications.
Features
• Digital Detection of Each Input Transition for Improved Low Speed
Motor Operation
• TTL Compatible Inputs With Hysteresis
• Operation Down to 5.5 V for Direct Powering from MC33035
Reference
• Internal Shunt Regulator Allows Operation from a Non−Regulated
Voltage Source
• Inverter Output for Easy Conversion between 60°/300° and
120°/240° Sensor Phasing Conventions
• Pb−Free Packages are Available
http://onsemi.com
MARKING
DIAGRAMS
PDIP−8
MC33039P
N SUFFIX
AWL
CASE 626
YYWWG
1
1
SOIC−8
33039
D SUFFIX
ALYW
CASE 751
G
1
1
A
= Assembly Location
WL, L = Wafer Lot
YY, Y = Year
WW, W = Work Week
G or G = Pb−Free Package
PIN CONNECTIONS
φ_A
4
3
φ_A
+
20 k
To Rotor
Position
Sensors
2
φ_B
1
φ_C
Delay
Delay
Delay
V_CC
8
+ 8.25 V
SQ
R
R_T
6
+
C_T
R
+
2R −
5
f_out
15 k
+
+−
0.3 V
Inputs
φ_C 1
φ_B 2
φ_A 3
φ_A 4
8 V_CC
7 GND
6 R_T/C_T
5 f_out
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 6 of this data sheet.
7
GND
Representative Block Diagram
© Semiconductor Components Industries, LLC, 2006
1
April, 2006 − Rev. 5
Publication Order Number:
MC33039/D