HA13532NT
Three-Phase Stepping Motor Control IC
Description
The HA13532NT is an IC for control a three-phase stepping motor.
Functions
• PWM current control
• Low-voltage inhibit (LVI)
• Three-bit D/A converter for current programming
• Motor on/off
• Selectable 2-phase or 2-3-phase exciting
ADE-207-121A (Z)
2nd Edition
July 1996
Features
• Wide operating voltage range
• Few external components
Block Diagram
23
HA13532NT
V
CC
C101
INSEL
H:L:CK2
DIR
Excite select
EXSEL
2ø
H:
2 — 3ø
L:
12VREG REG
LVI
3CK1
2CK2/DIR
Commutation
1Input select
24
13OE
10V2
9V1
7V0
POR
logic
3 bit
DAC
LVI
LVI
PWM
control
Ru
22 U
18 V
16 W
21 U
19 V
15 W
Rd
14 SENSE
LVI:
Low-voltage inhibit circuit
POR:
Power-on reset circuit
5 8 17 20 11
DAOUT
TAB 4 6
Rt Ct
3
HA13532NT
Pin Description
Pin No. Pin Name Function Pin Voltage
1 INSEL Selects pin 2 input: CK2 if high; DIR if low (see
timing diagrams)
2 CK2/DIR CK2 or DIR input (see timing diagrams) VTH = 2.5 V typ
3 CK1 CK1 input (see timing diagrams) VTH = 2.5 V typ
4 Rt Reference value for 3-phase output current
and Ct charge/discharge current
5 NC No connection
6 Ct Time constant for PWM carrier frequency
7 V0 Voltage programming input to DAC (LSB) VTH = 2.5 V typ
8 NC No connection
9 V1 Voltage programming input to DAC VTH = 2.5 V typ
10 V2 Voltage programming input to DAC (MSB) VTH = 2.5 V typ
11 DAOUT DAC output
12 VREG Regulated output 4.8 V typ (@I = 2 mA)
13 OE Output enable: low enables PWM output
phases U, V, and W; high gives high
impedance
14 SENSE Current feedback 0 V min, 5.0 V max
15 W Phase-W lower-arm output
16 W Phase-W upper-arm output
17 NC No connection
18 V Phase-V upper-arm output
19 V Phase-U lower-arm output
20 NC No connection
21 U Phase-U lower-arm output
22 U Phase-U upper-arm output
23 V
24 EXSEL Selects exciting mode: 2-phase if high; 2-3-
CC
Power supply 10 V min, 27.6 V max
phase if low (see timing diagrams)
= 2.5 V typ
V
TH
4.8 V typ
VTH = 2.5 V typ
VTH = 2.5 V typ
4
Application Circuit
CK1
3
23
22
C101
Q1
D1
Q2
D2
Q3
HA13532NT
V
CC
D3
CK2/DIR
INSEL
EXSEL
VR101
OE
V2
V1
V0
2
1
24
13
10
9
7
11
TAB 4 6
18
16
15
19
21
14
C102
C103
Q4
C104
C105
CtRt
D4
R101
Q5
D5
Rnf
Q6
D6 *1
Notes: 1. Use high-speed diodes for D4, D5, and D6.
5