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L6227Q データシート(PDF) 1 Page - STMicroelectronics

部品番号 L6227Q
部品情報  DMOS dual full bridge driver with PWM current controller
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6227Q データシート(HTML) 1 Page - STMicroelectronics

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June 2008
Rev 2
1/27
27
L6227Q
DMOS dual full bridge driver
with PWM current controller
Features
Operating supply voltage from 8 to 52 V
2.8 A output peak current (1.4 A DC)
RDS(on) 0.73 Ω typ. value @ TJ = 25 °C
Operating frequency up to 100 kHz
Non dissipative overcurrent protection
Dual independent constant tOFF PWM current
controllers
Slow decay synchronous rectification
Cross conduction protection
Thermal shutdown
Under voltage lockout
Integrated fast free wheeling diodes
Applications
Bipolar stepper motor
Dual or quad DC motor
Description
The L6227Q is a DMOS dual full bridge designed
for motor control applications, realized in
BCDmultipower technology, which combines
isolated DMOS power transistors with CMOS and
bipolar circuits on the same chip. The device also
includes two independent constant off time PWM
current controllers that performs the chopping
regulation. Available in VQFPN32 5 mm x 5 mm
package, the L6227Q features a non-dissipative
overcurrent protection on the high side power
MOSFETs and thermal shutdown.
VFQFPN32 5 mm x 5 mm
www.st.com
Figure 1.
Block diagram
D99IN1085A
GATE
LOGIC
OCDA
OCDB
OVER
CURRENT
DETECTION
OVER
CURRENT
DETECTION
GATE
LOGIC
VCP
VBOOT
ENA
IN1A
IN2A
ENB
IN1B
IN2B
VREFA
VBOOT
5V
10V
VSA
V
SB
OUT1A
OUT2A
OUT1B
OUT2B
SENSEA
CHARGE
PUMP
VOLTAGE
REGULATOR
ONE SHOT
MONOSTABLE
MASKING
TIME
THERMAL
PROTECTION
VBOOT
VBOOT
10V
10V
BRIDGE A
SENSE
COMPARATOR
BRIDGE B
RCA
+
-
SENSEB
VREFB
RCB
PWM


同様の部品番号 - L6227Q

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同様の説明 - L6227Q

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