L6229QTR STMicroelectronics, L6229QTR Datasheet - Page 15

• Manufacturer Part Number: L6229QTR
• Description: IC DRIVER DMOS DC MOTOR 32VFQFPN
• Manufacturer: STMicroelectronics
• Type: 3 Phase Brushless DC Motor Driverr

Specifications of L6229QTR

• Applications: DC Motor Driver, Brushless (BLDC), 3 Phase
• Number Of Outputs: 1
• Current - Output: 2.8A
• Voltage - Supply: 12 V ~ 52 V
• Operating Temperature: -40°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: 32-VFQFN, 32-VFQFPN
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Load: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 497-8495-2

L6229Q
Figure 12
capacity. It has to be said that t
this condition, but it can be smaller than t
to work but the off time t
So, small C
therefore, higher switching frequency), but, the smaller is the value for C
influential will be the noises on the circuit performance.
Figure 11. t
Figure 12. Area where t
⎧
⎨
⎩
t
t
t
ON
ON
RCRISE
>
>
shows the lower limit for the on time t
t
t
RCRISE
ON MIN
OFF
OFF
(
= 600 · C
value gives more flexibility for the applications (allows smaller on time and,
)
versus C
–
=
t
DT
2.5μs
1 . 10
1 . 10
OFF
100
100
10
OFF
10
1
1
4
3
0.1
0.1
ON
⎫
⎬
⎭
OFF
is not more constant.
can vary maintaining the PWM regulation
Doc ID 15209 Rev 3
ON
and R
(typ. value)
is always bigger than t
2.5μs (typ. value)
R
off
OFF
= 20kΩ
1
1
RCRISE
R
off
Coff [nF]
Coff [nF]
ON
= 47kΩ
- t
for having a good PWM current regulation
DT
R
off
. In this last case the device continues
= 100kΩ
10
10
ON(MIN)
because the device imposes
100
100
Circuit description
OFF
, the more
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