pbl37761 ETC-unknow, pbl37761 Datasheet - Page 4

• Manufacturer Part Number: pbl37761
• Description: Dual Controller High Current Stepper Motor Applications
• Manufacturer: ETC-unknow

PBL 3776/1
Figure 4. Pin configuration.
Pin Description
DIP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
4
Symbol
PWR GND
T1BL
T1BU
T1AL
T1AU
VBB1
SGND
VR
C
Phase
Dis
RC
Vcc
Dis
Phase
C
VR
SGND
VBB2
T2AU
T2AL
T2BU
T2BL
PWR GND
1
2
1
2
1
2
1
2
1
2
2
1
Description
"Power Ground" from output channel 1. Connected to the ground path (see application examples).
Output, channel 1, B side lower transistor. The pin will sink current when phase is high.
Output, channel 1, B side upper transistor. The pin will source current when phase is low.
Output, channel 1, A side lower transistor. The pin will sink current when phase is low.
Output, channel 1, A side upper transistor. The pin will source current when phase is high.
Supply voltage for driving channel 1 outputs.
Sense ground channel 1. Logic ground reference and sense ground for the current control feedback-
loop.
Reference voltage, channel 1. Controls the comparator threshold voltage and hence the output
current.
Comparator input channel 1. This input senses the instantaneous voltage across the sensing resistor,
filtered by the internal digital filter or an optional external RC network.
Controls the direction of channel 1 outputs T1AL, T1AU, T1BL and T1BU.
Disable input for channel 1. When HIGH, all four output transistors are turned off, which results in a
rapidly decreasing output current to zero.
Clock oscillator RC pin. Connect a 12 kohm resistor to V
obtain the nominal switching frequency of 23.0 kHz and a digital filter blanking time of 1.0 s.
Logic voltage supply, nominally +5 V.
Disable input for channel 2. When HIGH, all four output transistors are turned off, which results in a
rapidly decreasing output current to zero.
Controls the direction of channel 2 outputs T2AL, T2AU, T2BL and T2BU.
Comparator input channel 2. This input senses the instantaneous voltage across the sensing resistor,
filtered by the internal digital filter or an optional external RC network.
Reference voltage, channel 2. Controls the comparator threshold voltage and hence the output
current.
Sense ground channel 1. Logic ground reference and sense ground for the current control feedback-
loop.
Supply voltage for driving channel 2 outputs.
Output, channel 2, A side upper transistor. The pin will source current when phase is high.
Output, channel 2, A side lower transistor. The pin will sink current when phase is low.
Output, channel 2, B side upper transistor. The pin will source current when phase is low.
Output, channel 2, B side lower transistor. The pin will sink current when phase is high.
"Power Ground" from output channel 2. Connected to the ground path (see application examples).
PWR GND
SGND
Phase
T1BU
T1AU
VBB1
T1BL
T1AL
Dis
VR
RC
C
1
1
1
1
1
1
10
11
12
1
2
3
4
5
6
7
8
9
3776/1
PBL
24
23
22
21
20
19
18
17
16
15
14
13
PWR GND
T2BL
T2BU
T2AL
T2AU
VBB 2
SGND
VR
C
Phase
Dis
Vcc
2
2
2
2
2
CC
and a 4 700 pF capacitor to ground to
2