DESCRIPTION APPLICATIONS FEATURES BLOCK DIAGRAM

PT2463
PWM Constant-Current Stepping Motor Driver
DESCRIPTION
FEATURES
The PT2463 is a motor driver designed for 2 phase
stepping motor, it implement PWM to regulate output
current. The driver stage is consists by dual MOSFET Hbridge. Fabricated by advanced BCD process to improve
performance and reduce power losses. The driver support
up to 40V supply voltage and maximum driving current up
to 1.8A.
• Low RDS(on) BCD process
• PWM constant-current drive
• Provides phase inputs to allow full step and half
step excitation
• High voltage and current: 40V/1.8A
• Thermal shutdown (TSD), over-current shutdown
(ISD), power-on reset (POR) and under voltage
lock out (UVLO) helps to secure operates status.
• HTSSOP 28-Pin package with thermal pad
The on-chip voltage regulator allows only powered from a
single power supply, VM, it highly reduce external
components and saving the PCB size.
APPLICATIONS
• Home appliance
• Amusement machine
• Office automation machine
RSB
OUTB+
OUTB+
PGND
OUTB-
OUTB-
PGND
RSA
RSA
OUTA+
OUTA+
PGND
OUTA-
OUTA-
VM
ENABLE_B
RSB
VDD
ENABLE_A
LGND
LGND
PHASE_B
VHS
VREFB
PHASE_A
STBX
VREFA
OSCM
BLOCK DIAGRAM
Tel: 886-66296288‧Fax: 886-29174598‧ http://www.princeton.com.tw‧2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan
PT2463
APPLICATION CIRCUIT DIAGRAM
VM
100μF
Vref
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
PHASE_A
PHASE_B
ENABLE_A
ENABLE_B
STBX
3.6kΩ
0.5Ω
0.1μF
0.1μF
0.1μF
270pF
V1.1
2
0.5Ω
April 2013
PT2463
ORDER INFORMATION
Part Number
PT2463-HT
Package Type
28-Pin, HTSSOP, 173MIL
Top Code
PT2463-HT
PIN CONFIGURATION
V1.1
3
April 2013
PT2463
PIN DESCRIPTION
Pin Name
OSCM
PHASE_A
PHASE_B
ENABLE_A
ENABLE_B
STBX
LGND
I/O
I/O
I
I
I
I
I
-
RSA
I
OUTA+
PGND
OUTAPGND
OUTBPGND
OUTB+
O
O
O
O
RSB
I
VHS
VM
VDD
O
I
VREFB
I
VREFA
I
V1.1
Description
External pin for system clock RC oscillator
Phase-A output current direction select
Phase-B output current direction select
Phase-A enable, high=driver on, GND=driver off.
Phase-B enable, high=driver on, GND=driver off.
Power down mode; connect to GND will disable OSCM and output driver.
GND for logic circuit
External current sense resistor A; connect to high side of H-bridge, also the
negative input of current sense circuit.
H-bridge driver A positive output
H-bridge driver A GND
H-bridge driver A negative output
H-bridge driver B GND
H-bridge driver B negative output
Power GND
H-bridge driver B positive output
External current sense resistor B; connect to high side of H-bridge, also the
negative input of current sense circuit.
Smoothing filter for built-in regulator for high side driver
Main supply for the motor, also the positive input of current sense circuit.
Smoothing filter for built-in regulator for logic
Apply a DC potential to determinate output peak current of the PAHSE B
driver
Apply a DC potential to determinate output peak current of the PHASE A
driver
4
Pin No.
1
2
3
4
5
6
7, 26
8, 9
10, 11
12
13, 14
15
16, 17
18
19, 20
21, 22
23
24
25
27
28
April 2013
PT2463
IMPORTANT NOTICE
Princeton Technology Corporation (PTC) reserves the right to make corrections, modifications, enhancements,
improvements, and other changes to its products and to discontinue any product without notice at any time.
PTC cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a PTC product. No
circuit patent licenses are implied.
Princeton Technology Corp.
2F, 233-1, Baociao Road,
Sindian, Taipei 23145, Taiwan
Tel: 886-2-66296288
Fax: 886-2-29174598
http://www.princeton.com.tw
V1.1
15
April 2013