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參數(shù)資料
| 型號(hào)： | PBL3776/1NS |
| 廠商： | ERICSSON POWER MODULES AB |
| 元件分類(lèi)： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, 0.5 A, PDIP24 |
| 封裝： | PLASTIC, DIP-24 |
| 文件頁(yè)數(shù)： | 1/8頁(yè) |
| 文件大?。?/td> | 120K |
| 代理商： | PBL3776/1NS |
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 Ericssons 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.
PBL3776/1
RC
PBL 3776/1
V
CC
V
CC
S
R
Q
Logic
S
R
Q
+
–
+
–
+
–
Logic
VR2
VBB1
T1BU
Phase 2
Phase 1
Dis2
C2
SGND 2
Pwr GND 2
1BL
T
1AU
T
1AL
T
BB2
V
T2BU
2AU
T
2AL
T
2BL
T
VR1
Dis 1
C1
SGND 1
Pwr GND 1
1
February 1999
1
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