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參數(shù)資料
| 型號： | L6201P |
| 文件頁數(shù)： | 10/20頁 |
| 文件大小： | 244K |
| 代理商： | L6201P |
CIRCUIT DESCRIPTION
The L6201/1P/2/3 is a monolithic full bridge
switching motor driver realized in the new Mul-
tipower-BCD technologywhich allows the integra-
tion of multiple, isolated DMOS power transistors
plus mixed CMOS/bipolar control circuits. In this
way it has been possible to make all the control
inputs TTL, CMOS and
μ
C compatible and elimi-
nate the necessity of external MOS drive compo-
nents. The Logic Drive is shown in table 1.
Table 1
Inputs
Output Mosfets(*)
V
EN
= H
IN1
IN2
L
L
H
H
L
H
L
H
Sink 1, Sink 2
Sink 1, Source 2
Source 1, Sink 2
Source 1, Source 2
V
EN
= L
X
X
All transistors turned oFF
L = Low
(*) Numbers referred to INPUT1or INPUT2controlled output stages
H = High
X = DON’t care
Although the device guarantees the absence of
cross-conduction, the presence of the intrinsic di-
odes in the POWER DMOS structure causes the
generation of current spikeson the sensing termi-
nals. This is due to charge-discharge phenomena
in the capacitors C1 & C2 associated with the
drain source junctions (fig. 14). When the output
switches from high to low, a current spike is gen-
erated associated with the capacitor C1. On the
low-to-high transition a spike of the same polarity
is generated by C2, preceded by a spike of the
opposite polarity due to the charging of the input
capacity of the lower POWER DMOS transistor
(fig. 15).
TRANSISTOR OPERATION
ON State
When one of the POWER DMOS transistor is ON
it can be considered as a resistor R
DS (ON)
throughout the recommended operating range. In
this conditionthe dissipated power is given by :
P
ON
= R
DS (ON)
I
DS2
(RMS)
The low R
DS (ON)
of the Multipower-BCD process
can provide high currents with low power dissipa-
tion.
OFF State
When one of the POWER DMOS transistor is
OFF the V
DS
voltage is equal to the supply volt-
age and only the leakage current I
DSS
flows. The
power dissipation during this period is givenby :
P
OFF
= V
S
I
DSS
The power dissipation is very low and is negligible
in comparison to that dissipated in the ON
STATE.
Transitions
As already seen above the transistors have an in-
trinsic diode between their source and drain that
can operate as a fast freewheeling diode in
switched mode applications. During recirculation
with the ENABLE input high, the voltage drop
across the transistor is R
DS (ON)
I
D
and when it
reaches the diode forward voltage it is clamped.
When the ENABLE input is low, the POWER
MOS is OFF and the diode carries all of the recir-
culation current. The power dissipated in the tran-
sitional times in the cycle depends upon the volt-
age-current waveforms and in the driving mode.
(see Fig. 7ab and Fig. 8abc).
P
trans.
= I
DS
(t)
V
DS
(t)
Figure 14:
IntrinsicStructuresin the POWER
DMOS Transistors
Figure15:
CurrentTypical Spikes on the Sens-
ing Pin
L6201 - L6201P - L6202- L6203
10/20
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| L6201 | DMOS FULL BRIDGE DRIVER |
| L6201PS | DMOS FULL BRIDGE DRIVER |
| L6202_3 | |
| L6202 | DMOS FULL BRIDGE DRIVER |
| L6212 | Interface IC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6201PS | 功能描述:馬達(dá)/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 |
| L6201PSTR | 功能描述:馬達(dá)/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 |
| L6202 | 功能描述:馬達(dá)/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 |
| 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: |
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