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參數(shù)資料
| 型號： | L6202 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | DMOS FULL BRIDGE DRIVER |
| 中文描述： | DMOS全橋驅(qū)動器 |
| 文件頁數(shù)： | 12/20頁 |
| 文件大?。?/td> | 174K |
| 代理商： | L6202 |
QuiescentEnergy
The last contribution to the energy dissipation is
dueto thequiescentsupply currentand is given by:
E
QUIESCENT
= I
QUIESCENT
V
s
T
Total Energy Per Cycle
E
TOT
= E
OFF/ON
+ E
LD
+ E
COM
+
+ E
ON/OFF
+ E
QUIESCENT
The Total Power Dissipation P
DIS
is simply:
P
DIS
= E
TOT
/T
T
r
= Rise time
T
LD
= Load drive time
T
f
= Fall time
T
d
= Dead time
T = Period
T = T
r
+ T
LD
+ T
f
+ T
d
DC Motor Speed Control
Since the I.C. integrates a full H-Bridgein a single
package it is idealy suited for controlling DC mo-
tors. When used for DC motor control it performs
the power stage required for both speed and di-
rection control. The device can be combined with
a current regulator like the L6506 to implement a
transconductance amplifier for speed control, as
shown in figure 17. In this particular configuration
only half of the L6506 is used and the other half
of the device may be used to control a second
motor.
The L6506 senses the voltage across the sense
resistor R
S
to monitor the motor current: it com-
pares the sensed voltage both to control the
speedand during the brake of the motor.
Between the sense resistor and each sense input
of the L6506 a resistor is recommended; if the
connections between the outputs of the L6506
and the inputs of the L6203 need a long path, a
resistor must be added between each input of the
L6203and ground.
A snubbernetwork made by the series ofR and C
must be foreseen very near to the output pins of
the I.C.; one diode (BYW98) is connected be-
tween each poweroutput pin and ground as well.
The following formulas can be used to calculate
the snubber values:
R
V
S
/l
p
C = l
p
/(dV/dt)where:
V
S
is the maximum Supply Voltage foreseen on
the application;
I
p
is the peak of the load current;
dv/dt is the limited rise time of the output voltage
(200V/
μ
s is generally used).
If the Power Supply Cannot Sink Current, a suit-
able large capacitor must be used and connected
near the supply pin of the L6203. Sometimes a
capacitor at pin 17 of the L6506 let the application
better work. For motor current up to 2A max., the
L6202 can be used in a similar circuit configura-
tion for which a typical Supply Voltage of 24V is
recommended.
Figure17:
BidirectionalDC Motor Control
L6201 - L6201P - L6202 - L6203
12/20
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| L6212 | Interface IC |
| L6217 | Industrial Control IC |
| L6217A | Industrial Control IC |
| L6230AH | DC Motor Controller/Driver |
| L6230H | DC Motor Controller/Driver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6202 | 制造商:STMicroelectronics 功能描述:DMOS FULL BRIDGE DRIVER 6202 DIP |
| L6202_3 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| L6202ES | 制造商:STMicroelectronics 功能描述:6202ES |
| L6203 | 功能描述:馬達/運動/點火控制器和驅(qū)動器 DMOS Full Bridge RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| L6203 | 制造商:STMicroelectronics 功能描述:IC DMOS FULL BRIDGE DRIVER 6203 |
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