EVAL6229PD STMicroelectronics, EVAL6229PD Datasheet - Page 10
![EVAL BOARD FOR L6229PD SOIC](/photos/9/9/90913/eval6229pd_sml.jpg)
EVAL6229PD
Manufacturer Part Number
EVAL6229PD
Description
EVAL BOARD FOR L6229PD SOIC
Manufacturer
STMicroelectronics
Datasheet
1.EVAL6229PD.pdf
(43 pages)
Specifications of EVAL6229PD
Mfg Application Notes
L6235, AN1625 App Note
Main Purpose
Power Management, Motor Control
Embedded
No
Utilized Ic / Part
L6229PD SOIC
Primary Attributes
3-Ph BLDC, 8 ~ 52V Output, PWM Current Control, Brake Function
Secondary Attributes
Over Current, Cross Conduction & Temperature Protection
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-5491
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
EVAL6229PD
Manufacturer:
STMicroelectronics
Quantity:
135
AN1451 APPLICATION NOTE
2.7 Sharing the Charge Pump Circuitry
If more than one device is used in the application, it's possible to use the charge pump from one L6208 to supply
the V
Figure 8. A 100nF capacitor (C8) should be connected to the V
Supply voltage pins (V
The higher the number of devices sharing the same charge pump, the lower will be the differential voltage avail-
able for gate drive (V
In this case it's recommended to omit the resistor on the CP pin, obtaining a higher current capability of the
charge pump circuitry.
Better performance can also be obtained using a 33nF capacitor for C5 and using schottky diodes (for example
BAT47 are recommended).
Sharing the same charge pump circuitry for more than 3÷4 devices is not recommended, since it will reduce the
V
Figure 8. Sharing the charge pump circuitry.
10/43
BOOT
BOOT
voltage increasing the high-side MOS on-resistance and thus power dissipation.
To other Devices
pins of several ICs. The unused CP pins on the slaved devices are left unconnected, as shown in
BOOT
To High-Side
Gate Drivers
S
) of the devices sharing the charge pump must be connected together.
V
BOOT
- V
S
), causing a higher R
CP
V
SA
L6208
V
SB
C18 = 100 nF
DS(ON)
for the high side DMOS, so higher dissipating power.
V
BOOT
BOOT
To High-Side
Gate Drivers
D1 = BAT47
C5 = 33nF
pin of each device.
CP
D2 = BAT47
V
SA
L6208
V
SB
C8 = 100nF