MC33033_07 Datasheet, PDF (1/27 Pages) ON Semiconductor – Brushless DC Motor Controller

MC33033, NCV33033
Brushless DC
Motor Controller
The MC33033 is a high performance second generation, limited
feature, monolithic brushless dc motor controller which has evolved
from ON Semiconductor’s full featured MC33034 and MC33035
controllers. It contains all of the active functions required for the
implementation of open loop, three or four phase motor control. The
device consists of a rotor position decoder for proper commutation
sequencing, temperature compensated reference capable of supplying
sensor power, frequency programmable sawtooth oscillator, fully
accessible error amplifier, pulse width modulator comparator, three
open collector top drivers, and three high current totem pole bottom
drivers ideally suited for driving power MOSFETs. Unlike its
predecessors, it does not feature separate drive circuit supply and
ground pins, brake input, or fault output signal.
Included in the MC33033 are protective features consisting of
undervoltage lockout, cycle−by−cycle current limiting with a
selectable time delayed latched shutdown mode, and internal thermal
shutdown.
Typical motor control functions include open loop speed, forward or
reverse direction, and run enable. The MC33033 is designed to operate
brushless motors with electrical sensor phasings of 60°/300° or
120°/240°, and can also efficiently control brush dc motors.
Features
• 10 to 30 V Operation
• Undervoltage Lockout
• 6.25 V Reference Capable of Supplying Sensor Power
• Fully Accessible Error Amplifier for Closed Loop Servo
Applications
• High Current Drivers Can Control External 3−Phase MOSFET
Bridge
• Cycle−By−Cycle Current Limiting
• Internal Thermal Shutdown
• Selectable 60°/300° or 120°/240° Sensor Phasings
• Also Efficiently Control Brush DC Motors with External MOSFET
H−Bridge
• NCV Prefix for Automotive and Other Applications Requiring Site
and Control Changes
• Pb−Free Packages are Available
http://onsemi.com
PDIP−20
P SUFFIX
CASE 738
SO−20L
DW SUFFIX
CASE 751D
20
1
20
1
PIN CONNECTIONS
Top Drive
Output
B_T 1
A_T 2
Fwd/Rev 3
Sensor
Inputs
S_A 4
S_B 5
S_C 6
Reference Output 7
Oscillator 8
Error Amp
Non Inverting Input
9
Error Amp
Inverting Input
10
20 C_T
19 Output Enable
18 60°/120° Select
17 AB
16 B_B
15 C_B
Bottom
Drive
Outputs
14 V_CC
13 Gnd
12
Current Sense
Non Inverting Input
11 ^{Error Amp Out/}
PWM Input
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 25 of this data sheet.
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 25 of this data sheet.
© Semiconductor Components Industries, LLC, 2007
1
January, 2007 − Rev. 9
Publication Order Number:
MC33033/D