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| 型号： | PG001M |
| 元件分类： | 运动控制电子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, 0.015 A, PDIP16 |
| 封装： | PLASTIC, DIP-16 |
| 文件页数： | 8/12页 |
| 文件大小： | 213K |
| 代理商： | PG001M |
PG001M
PARALLEL-TO-SERIAL
DATA CONVERTER
Integra
ted
Cir
cuits
5
www.allegromicro.com
PG001M DESCRIPTION AND OPERATION
The PG001M is a CMOS step-motor control IC that
converts parallel-input signals from a microprocessor (
P,
or microcontroller,
C) to the serial-input data format
required for control of an SLA7042M or SLA7044M
microstepping, unipolar PWM, high-current motor driver.
This control IC offers five basic modes of motor operation:
1) normal 2-phase, full-step (100% torque vector);
2) 2-phase, full-step 'boosted' torque (141% vector);
3) 1/2-step, constant torque operation
(i.e., 2-1-2 switching);
4) 1/4-step operation with current-ratioed constant
torque; and
5) smooth microstepping operation (1/8th step) for
resonance-free motor performance (constant torque
with eight output current ratios).
Three inputs (VC, MS
1, and MS2) control these five
operational modes (as shown in figure 1); this enables
designers to change the drive method during movement to
realize optimal performance.
Initially, at start-up, the high-torque mode can provide
141% torque (the resulting vector of both motor windings
at 100% current). This enhances rapid acceleration (and
deceleration). Switching to quarter-stepping or
microstepping (after initial, startup acceleration) offers
smooth, resonance-free operation during the ramp-up
interval. The transition to quarter- or microstepping
should occur before the increasing step rate approaches the
motor resonance frequency (usually 100 to 200 Hz).
The modes of operation and current-control truth table
are listed on page 2; and there are two full-step, 2-phase
(2-2) operating modes. The VECTOR CONTROL input
(VC) can only be changed when MONITOR (MO, a
readback pin) is LOW and the PG001M is operating in the
full-step mode. Starting (or stopping) the step motor with
VC HIGH delivers the highest torque (141%) from the
motor, and is the extension of two outputs ON at 71.4%.
This 'half-step' rotor position corresponds to the state when
MO is LOW, and switching the control inputs to another
operating mode is allowed.
The PG001M accepts logic signals from the
P and
converts these into the proper serial-data format required
to control the serial-data input lines of the SLA7042M or
SLA7044M microstepping power modules. The five
control inputs determine the various modes of operation.
The CLOCK
OUT, SERIAL DATAA, SERIAL DATAB, and
STROBE to the SLA7042/44M are synchronized to the
CLOCK
IN of the PG001M; and the CLOCKIN frequency is
eight times the step rate (more to follow on the signal/
timing relationships).
The internal logic and oscillator combine to convert
the parallel input signals to 'bursts' of serial data from the
A
B
AB
ONE-PHASE, FULL-STEP MODE
(WITHOUT PG001M)
TWO-PHASE, FULL-STEP MODE
(MS1 = L, MS2 = L, VC = L)
1/4-STEP MODE
(MS1 = L, MS2 = H, VC = X)
1/8-STEP MODE
(MS1 = H, MS2 = H, VC = X)
Dwg. OP-005
TWO-PHASE, FULL-STEP MODE
MAXIMUM TORQUE (141%)
(MS1 = L, MS2 = L, VC = H)
1/2-STEP MODE
CONSTANT TORQUE
(MS1 = H, MS2 = L, VC = X)
AB
A
B
AB
A
B
AB
A
B
AB
NOTE – Mode change only allowed at half-step positions (refer to
upper right figure).
Figure 1 — Current/Displacement Vectors
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PG001M_10 | 制造商:SANKEN 制造商全称:Sanken electric 功能描述:Serial Signal Generator ICs for SLA7042M and SLA7044M |
| PG0035 | 功能描述:固定电感器 GAPPED TOROID IND RoHS:否 制造商:AVX 电感:10 uH 容差:20 % 最大直流电流:1 A 最大直流电阻:0.075 Ohms 工作温度范围:- 40 C to + 85 C 自谐振频率:38 MHz Q 最小值:40 尺寸:4.45 mm W x 6.6 mm L x 2.92 mm H 屏蔽:Shielded 端接类型:SMD/SMT 封装 / 箱体:6.6 mm x 4.45 mm |
| PG0036 | 功能描述:固定电感器 GAPPED TOROID IND RoHS:否 制造商:AVX 电感:10 uH 容差:20 % 最大直流电流:1 A 最大直流电阻:0.075 Ohms 工作温度范围:- 40 C to + 85 C 自谐振频率:38 MHz Q 最小值:40 尺寸:4.45 mm W x 6.6 mm L x 2.92 mm H 屏蔽:Shielded 端接类型:SMD/SMT 封装 / 箱体:6.6 mm x 4.45 mm |
| PG0036NL | 功能描述:固定电感器 INDUCTOR GAPPED TOROID RoHS:否 制造商:AVX 电感:10 uH 容差:20 % 最大直流电流:1 A 最大直流电阻:0.075 Ohms 工作温度范围:- 40 C to + 85 C 自谐振频率:38 MHz Q 最小值:40 尺寸:4.45 mm W x 6.6 mm L x 2.92 mm H 屏蔽:Shielded 端接类型:SMD/SMT 封装 / 箱体:6.6 mm x 4.45 mm |
| PG0040.102T | 制造商:Pulse 功能描述:IND PWR SHLD 1UH 20% 100KHZ 1.2A - Tape and Reel 制造商:Pulse Electronics Corporation 功能描述:Ind Power Shielded Wirewound 1uH 20% 100KHz 1.2A T/R |
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