- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄382476 > SA56 (APEX MICROTECHNOLOGY CORP) PULSE WIDTH MODULATION AMPLIFIER PDF資料下載
參數(shù)資料
| 型號： | SA56 |
| 廠商： | APEX MICROTECHNOLOGY CORP |
| 元件分類： | 運(yùn)動控制電子 |
| 英文描述： | PULSE WIDTH MODULATION AMPLIFIER |
| 中文描述： | STEPPER MOTOR CONTROLLER, 10 A, ZFM23 |
| 封裝： | SIP-23 |
| 文件頁數(shù)： | 6/7頁 |
| 文件大?。?/td> | 510K |
| 代理商： | SA56 |
APEX MICROTECHNOLOGY CORPORATION 5980 NORTH SHANNON ROAD TUCSON, ARIZONA 85741 USA APPLICATIONS HOTLINE: 1 (800) 546-2739
6
PRELMNARY
OPERATING
CONSIDERATIONS
SA56
MODES OF OPERATION
The following chart shows the four modes of operation.
Mode
2
Quad
Digital
2
Quad
Digital
4
Quad
Digital
4
Quad
Analog
CPWM
GND
PWM
Modu-
lation
In
Modu-
lation
In
High
DIR
High
Aout
High
Bout
PWM
GND
Low
PWM
High
GND
Modu-
lated
In
Not
but
GND
DIR
DIR
Add
set
Fre-
quency
Drive
analog
signal
Greater
high for a
low
input
Greater
high for a
high
input
ANALOG INPUT OPERATION
The SA56 can operate with analog or digital inputs. In the
analog mode, the capacitor from CPWM to GND (SIG) sets
the frequency of an internal triangular ramp signal. An analog
input at the PWM pin is compared to the ramp to generate
the duty cycle of the output. In Analog mode, the digital input
on the DIR pin is ignored, though this pin should never be
left floating.
OPERATING WITH DIGITAL INPUTS
Two and 4 quadrant operation are possible with the SA56
when driven with a digital PWM signal from a microcontroller or
DSP. When using a digital modulation signal, tie the CPWM pin
to GND to disable the internal oscillator and ramp generator.
When operating in the digital mode, pulse widths should be
no less than 100ns and the switching frequency should remain
less than 500KHz. This will allow enough time for the output
MOSFETs to reach their full on/off state before receiving a
command to reverse state.
2 QUADRANT DIGITAL MODE
For sign/magnitude (2 quadrant) operation, two digital input
signals are required. A digital PWM signal to the PWM pin can
control the output duty cycle at one output pin with the other
output pin held "HIGH". The digital input on the DIR pin will
control direction by selecting the outputs that switch accord-
ing to the PWM input. If DIR is a logic "HIGH", the A output
will be held "HIGH" and the B output will be switched as the
inverse of the PWM input signal. If DIR is logic "LOW", the B
output will be held "HIGH" and the A output will be switched.
Operating in 2 quadrant mode reduces switching noise and
power dissipation, but limits the control of the motor at very
low speed.
A braking function can be achieved by holding the PWM input
"LOW", which will turn both of the upper MOSFETs on, rapidly
reducing the circulating current of the motor winding.
4 QUADRANT DIGITAL MODE
During 4 quadrant operation a single digital PWM input in-
cludes magnitude and direction information. The digital PWM
input signal is applied to the DIR pin and the PWM/INPUT pin
is tied to "HIGH". Both pairs of output MOSFETs will switch
in a locked anti-phase fashion from 0-100% duty cycle. With
a 50% duty cycle the average voltage of each output will be
half of Vs, and the differential voltage applied to the load will
be zero. Four quadrant operation allows smooth transitions
through zero current for position servos and low speed ap-
plications. Power dissipation is slightly higher since all four
output MOSFETs switch every cycle.
NPEVMBUJPOTJHOBM
7
%%
PS(/%TFFUBCMF
'*(63&
26"%3"/5%*(*5"-.0%&
(/%4*(
"
065
#
065
7
4
1
(/%
4$
*/
3
4&/4&
$
$
%*4"#-&
'"6-5
18.
7
3&'
7
$
18.
7
%%
%*3
$
7
%%
7
4
4"
5
-*.
*
4&/
)FBU5BC
$
7
%%
'*(63&
26"%3"/5%*(*5"-.0%&
(/%4*(
"
065
#
065
7
4
1
(/%
4$
*/
3
4&/4&
$
$
%*4"#-&
'"6-5
18.
7
3&'
7
$
18.
7
%%
%*3
$
7
%%
7
4
4"
5
-*.
*
4&/
NPEVMBUJPOTJHOBM
)FBU5BC
$
(/%4*(
"
065
#
065
7
4
1
(/%
3
4&/4&
$
$
)FBU5BC
%*4"#-&
'"6-5
18.
7
3&'
7
$
18.
$
.0%
%*3
$
7
%%
7
4
4"
*
4&/
'*(63&
"/"-0(*/16501&3"5*0/
$
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SA5V0A | Transient Voltage Suppressors |
| SA78(C)A | DEVICES FOR BIPOLAR APPLICATIONS |
| SA40(C)A | DEVICES FOR BIPOLAR APPLICATIONS |
| SA30(C)A | DEVICES FOR BIPOLAR APPLICATIONS |
| SA10(C)A | DEVICES FOR BIPOLAR APPLICATIONS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SA56_07 | 制造商:CIRRUS 制造商全稱:Cirrus Logic 功能描述:PULSE WIDTH MODULATION AMPLIFIER |
| SA56004 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Smart, simple solutions for the 12 most common design concerns |
| SA56004AD | 功能描述:板上安裝溫度傳感器 I2C LOC +/- 2OC AND REM +/- 1OC TS RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| SA56004AD,112 | 功能描述:板上安裝溫度傳感器 I2C LOC +/- 2OC AND RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| SA56004AD,118 | 功能描述:板上安裝溫度傳感器 I2C LOC +/- 2OC AND RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。