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參數(shù)資料
| 型號： | PBL3776-1 |
| 廠商： | ERICSSON |
| 英文描述： | Dual Controller IC for High Current Stepper Motor Applications |
| 中文描述： | 雙控制器IC，用于電流步進(jìn)電機(jī)的應(yīng)用 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 120K |
| 代理商： | PBL3776-1 |
24-pin plastic DIP package, narrow
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.
Figure 1. Block diagram.
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.
PBL37761
RC
PBL 3776/1
V
CC
V
CC
S
R
Q
Logic
S
R
Q
+
–
+
–
+
–
Logic
V
R2
V
BB1
T
1BU
Phase 2
Phase1
Dis2
C2
SGND2
Pwr GND2
1BL
T
T
1AU
T
1AL
BB2
V
T
2BU
2AU
T
2AL
T
T
2BL
V
R1
Dis1
C1
SGND1
Pwr GND1
1
February 1999
1
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