參數(shù)資料
型號(hào)： L6207N
廠商： 意法半導(dǎo)體
英文描述： DMOS DUAL FULL BRIDGE DRIVER WITH PWM CURRENT CONTROLLER
中文描述： 偶的DMOS全橋驅(qū)動(dòng)器，帶有PWM電流控制器
文件頁(yè)數(shù)： 9/23頁(yè)
文件大?。?/td> 387K
代理商： L6207N
9/23
L6207
TRUTH TABLE
X
High Z
GND (Vs)
(*) Valid only in case of load connected between OUT1 and OUT2
= Don't care
= High Impedance Output
= GND during Ton, Vs during Toff
PWM CURRENT CONTROL
The L6207 includes a constant off time PWM current controller for each of the two bridges. The current control
circuit senses the bridge current by sensing the voltage drop across an external sense resistor connected be-
tween the source of the two lower power MOS transistors and ground, as shown in Figure 7. As the current in
the load builds up the voltage across the sense resistor increases proportionally. When the voltage drop across
the sense resistor becomes greater than the voltage at the reference input (VREF
A
or VREF
B
) the sense com-
parator triggers the monostable switching the low-side MOS off. The low-side MOS remain off for the time set
by the monostable and the motor current recirculates in the upper path. When the monostable times out the
bridge will again turn on. Since the internal dead time, used to prevent cross conduction in the bridge, delays
the turn on of the power MOS, the effective off time is the sum of the monostable time plus the dead time.
Figure 7. PWM Current Controller Simplified Schematic
Figure 8 shows the typical operating waveforms of the output current, the voltage drop across the sensing re-
sistor, the RC pin voltage and the status of the bridge. Immediately after the low-side Power MOS turns on, a
high peak current flows through the sensing resistor due to the reverse recovery of the freewheeling diodes. The
L6207 provides a 1
μ
s Blanking Time t
BLANK
that inhibits the comparator output so that this current spike cannot
prematurely re-trigger the monostable.
INPUTS
IN1
X
L
H
L
H
OUTPUTS
Description (*)
EN
L
H
H
H
H
IN2
X
L
L
H
H
OUT1
High Z
GND
Vs
GND (Vs)
Vs
OUT2
High Z
GND
GND (Vs)
Vs
Vs
Disable
Brake Mode (Lower Path)
Forward
Reverse
Brake Mode (Upper Path)
DRIVERS
+
DEAD TIME
S
Q
R
DRIVERS
+
DEAD TIME
2H
1H
2L
1L
OUT2A(or B)
SENSEA(or B)
RSENSE
D02IN1352
RCA(or B)
R
C
VREFA(or B)
IOUT
OUT1A(or B)
+
-
+
-
1
μ
s
5mA
BLANKER
SENSE
COMPARATOR
COMPARATOR
OUTPUT
MONOSTABLE
RESET
2.5V
5V
FROM THE
LOW-SIDE
GATE DRIVERS
LOAD
A
(or
B
)
BLANKING TIME
MONOSTABLE
VS
A
(or B)
TO GATE LOGIC
(0)
(1)
相關(guān)PDF資料
PDF描述
L6207PD DMOS DUAL FULL BRIDGE DRIVER WITH PWM CURRENT CONTROLLER
L6208 FULLY INTEGRATED STEPPER MOTOR DRIVER
L6208D FULLY INTEGRATED STEPPER MOTOR DRIVER
L6208N FULLY INTEGRATED STEPPER MOTOR DRIVER
L6208PD FULLY INTEGRATED STEPPER MOTOR DRIVER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
L6207PD 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 Dual 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
L6207PD013TR 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 Dual 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
L6207Q 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 DMOS Dual Bridge DRV 5.6A 0.3 Ohm 100kHz 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
L6207QTR 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 DMOS Dual Full Bridge Driver 5.6A 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
L6208 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:FULLY INTEGRATED STEPPER MOTOR DRIVER
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