ATA6823-PHQW Atmel, ATA6823-PHQW Datasheet - Page 13

• Manufacturer Part Number: ATA6823-PHQW
• Description: IC H-BRIDGE MOTOR DRIVER 32-QFN
• Manufacturer: Atmel
• Type: H-Bridge Motor Driverr

Specifications of ATA6823-PHQW

• Configuration: H Bridge
• Input Type: PWM
• Delay Time: 4.25µs
• Current - Peak: 350mA
• Number Of Configurations: 1
• Number Of Outputs: 4
• Voltage - Supply: 6.5 V ~ 21.2 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
• Operating Supply Voltage: 7 V to 18 V
• Supply Current: 7 mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• High Side Voltage - Max (bootstrap): -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

3.11.1
4856K–AUTO–01/11
Cross Conduction Time
To prevent high peak currents in the H-bridge, a non-overlapping phase for switching the
external power NMOS is realized. An external RC combination defines the cross conduction
time in the following way:
t
The RC combination is charged to 5V and the switching level of the internal comparator is
67% of the start level.
The resistor R
C
The time measurement is triggered by the PWM or DIR signal crossing the 50% level.
Figure 3-6.
The delays t
CC
PWM or
DIR
Lx
Hx
CC
(µs) = 0.41
value has to be 5nF. Use of COG capacitor material is recommended.
HxLH
CC
Timing of the Drivers
and t
R
must be greater than 5k and should be as close as possible to 10k , the
CC
t
(k )
LxHL
LxLH
t
CC
t
HxLH
include the cross conduction time t
t
Lxf
C
CC
50%
(nF) (tolerance: ±5% ±0.15µs)
t
Hxr
80%
20%
80%
20%
t
t
CC
HxHL
t
LxLH
t
Hxf
CC
.
Atmel ATA6823
t
Lxr
t
t
t
13