Motor Applications. PBL3776-1 Datasheet

PBL3776-1 Applications. Datasheet pdf. Equivalent


Ericsson PBL3776-1
February 1999
PBL 3776/1
Dual Controller IC for High Current
Stepper Motor Applications
Description
The PBL 3776/1 is a switch-mode (chopper), constant-current controller IC intended
for controlling external transistors in a high current stepper motor application.The IC
has two channels one for each winding of a two-phase stepper motor. The circuit is
similar to Ericsson´s PBL 3775/1. PBL 3776/1 is equipped with a Disable input to
simplify half-stepping operation.
The PBL 3776/1 contains a clock oscillator, which is common for both driver
channels, a set of comparators and flip-flops implementing the switching control, and
two output sections each containing four outputs, two source and two sink, intended
to drive an external H-bridge.
Voltage supply requirements are +5 V for logic and +10 to +45 V for the outputs.
The close match between the two driver channels guarantees consistent output
current ratios and motor positioning accuracy.
Key Features
• Suitable to drive any external Mos Fet
or bipolar power transistor.
• 0°C to +85°C operation.
• Few external components.
• Crossconduction prevented by time
delay.
• Close matching between channels for
high positioning accuracy.
• Digital filter on chip eliminates
external
filtering components.
• Plastic 24-pin "narrow" DIP package.
Phase 1
Dis 1 VR1
C1 SGND 1
Pwr GND 1
1
PBL 3776/1
VCC
V
CC
+ RQ
S
Logic
+
RC
Logic
+ SQ
R
Phase 2
Dis2 VR2
C2
SGND 2
Figure 1. Block diagram.
Pwr GND 2
T1BL
T1AL
T1AU
T1BU
VBB1
VBB2
T2BU
T2AU
T2AL
T2BL
24-pin plastic DIP package, narrow
1


PBL3776-1 Datasheet
Recommendation PBL3776-1 Datasheet
Part PBL3776-1
Description Dual Controller IC for High Current Stepper Motor Applications
Feature PBL3776-1; February 1999 PBL 3776/1 Dual Controller IC for High Current Stepper Motor Applications Description.
Manufacture Ericsson
Datasheet
Download PBL3776-1 Datasheet




Ericsson PBL3776-1
PBL 3776/1
Maximum Ratings
Parameter
Voltage
Logic supply
Output supply
Logic inputs
Analog inputs
Current
Output current
Logic inputs
Analog inputs
t=1mS
Temperature
Junction temperature
Storage temperature
Pin no.*
13
6, 19
10, 11, 14, 15
8, 9, 16, 17
2, 3, 4, 5, 20, 21, 22, 23
10, 11, 14, 15
8, 9, 16, 17
Recommended Operating Conditions
Parameter
Logic supply voltage
Supply voltage
Output emitter voltage
Output current continuous (see text)
Operating ambient temperature
Rise and fall time logic inputs
Oscillator timing resistor
Symbol
VCC
VBB
VE
IM
TA
tr,, tf
RT
Symbol
VCC
VBB
VI
V
A
IO
II
IA
T
J
TS
Min
4.75
10
-200
0
2
Min
0
0
-0.3
-0.3
-500
-10
-10
-55
Typ
5
12
Max
7
45
6
V
CC
+500
+150
+150
Unit
V
V
V
V
mA
mA
mA
°C
°C
Max
5.25
40
1.0
+200
+85
2
20
Unit
V
V
V
mA
°C
µs
kohm
Phase 1
Dis 1 VR1
10 11 8
PBL 3776/1
ICC VCC 13
V
CC
C1 SGND 1
97
Pwr GND 1
1
+ RQ
S
Logic
12 k
RT
+
IRC RC 12
VCC
4 700 pF
CT
VI
V
VIH VA
V
IL R
VRC
II IIH IIL
IR IA
Logic
+ SQ
R
15 14 17
16 18
Phase 2
Dis2 VR2
C2
SGND 2
24
Pwr GND 2
*VCH
Rs
VC
VA
2 T1BL
4 T1AL
5 T1AU
3 T1BU
6 VBB1
19 VBB2
IBB
22 T2BU
20 T2AU
21 T2AL
23 T2BL
IOU
IOU
IOL
IOL
*
VOA
V OB
V BB
* For test purposes only
Figure 2. Definition of symbols and test circuit.
2
VOA - VOB
50 %
t on
t off
VC
V
CH
td
t
V
RC
t
tb
fs=
1
ton + toff
D=
ton
ton + toff
t
Figure 3. Definition of terms.



Ericsson PBL3776-1
PBL 3776/1
Electrical Characteristics
Electrical characteristics over recommended operating conditions, unless otherwise noted.
0°C
T
j
+125°C.
Parameter
Ref.
Symbol fig. Conditions
Min Typ
Max
General
Supply current
Supply current
Total power dissipation
I 2 Note 3.
CC
ICC 2 Dis1= Dis2= HIGH.
PD VBB= 24 V, IBB1= IBB2= 200 mA.
Notes 2, 3.
65 70
7 10
0.2 0.3
Thermal shutdown junction temperature Note 2
160
Turn-off delay
t
d
3
T
A
=
+25°C,
dV /dt
C
50
mV/µs,
I = 100 mA. Note 2.
BB
1.1 2.0
Logic Inputs
Logic HIGH input voltage
Logic LOW input voltage
Logic HIGH input current
Logic LOW input current
VIH 2
VIL 2
IIH 2 VI = 2.4 V
IIL 2 VI = 0.4 V
2.0
0.6
20
-0.2 -0.1
Analog Inputs
Input current
|VC1—VC2| mismatch
IA 2 Vr= 5 V
VCdiff 2 TA = 25°C Note 3
0.5 0.8
5
Motor Outputs
Lower transistor saturation voltage
Lower transistor leakage current
Upper transistor saturation voltage
Upper transistor leakage current
8 IM = 200 mA
2 Dis1 = Dis2 = High, TA = 25°C
9 I = 200 mA
M
2
Dis1
=
Dis2
=
High,
T
A
=
25°C
0.2 0.4
50
0.9 1.2
50
Chopper Oscillator
Chopping frequency
Digital filter blanking time
fs 3 CT = 4 700 pF, RT = 12 kohm
tb 3 CT = 4 700 pF. Note 3.
23.0
1.0
Thermal Characteristics
Parameter
T
J-A
TJ-A
Ref.
Symbol fig. Conditions
R
thJ-C
RthJ-A
Note 2
Note 2
Min Typ
28
45
Max
Notes
1. All voltages are with respect to ground. Currents are positive into, negative out of specified terminal.
2. Not covered by final test program.
3. Switching duty cycle D = 30%, fs = 23.0 kHz.
Unit
mA
mA
W
°C
µs
V
V
µA
mA
mA
mV
V
µA
V
µA
kHz
µs
Unit
°C/W
°C/W
3





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