L6227N STMicroelectronics, L6227N Datasheet - Page 12

• Manufacturer Part Number: L6227N
• Description: IC DRIVER FULL BRIDGE DUAL 24DIP
• Manufacturer: STMicroelectronics
• Type: H Bridger

Specifications of L6227N

• Input Type: Non-Inverting
• Number Of Outputs: 4
• On-state Resistance: 730 mOhm
• Current - Output / Channel: 1.4A
• Current - Peak Output: 2.8A
• Voltage - Supply: 8 V ~ 52 V
• Operating Temperature: -25°C ~ 125°C
• Mounting Type: Through Hole
• Package / Case: PowerSSO-24
• Operating Supply Voltage: 8 V to 52 V
• Supply Current: 1.4 A
• Mounting Style: Through Hole
• For Use With: 497-6817 - EVAL BOARD FOR L6227Q
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-3648

L6227
Figure 10. Area where t
can vary maintaining the PWM regulation.
ON
100
10
1.5 s (typ. value)
1
0.1
1
10
100
Coff [nF]
SLOW DECAY MODE
Figure 11 shows the operation of the bridge in the Slow Decay mode. At the start of the off time, the lower power
MOS is switched off and the current recirculates around the upper half of the bridge. Since the voltage across
the coil is low, the current decays slowly. After the dead time the upper power MOS is operated in the synchro-
nous rectification mode. When the monostable times out, the lower power MOS is turned on again after some
delay set by the dead time to prevent cross conduction.
Figure 11. Slow Decay Mode Output Stage Configurations
A) ON TIME
B) 1 s DEAD TIME
C) SYNCHRONOUS
D) 1 s DEAD TIME
RECTIFICATION
D01IN1336
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