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| DRV3204-Q1 Datasheet, PDF (16/38 Pages) Texas Instruments – DRV3204-Q1 Three-Phase Brushless Motor Driver | |||
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Not Recommended for New Designs
DRV3204-Q1
SLVSBT3C â MARCH 2013 â REVISED JULY 2016
www.ti.com
Feature Description (continued)
7.2.3 Charge Pump
The charge-pump block generates a supply for the high-side and low-side pre-drivers to maintain the gate
voltage on the external FETs. Use of an external storage capacitor (CCP) and bucket capacitors (C1, C2)
supports pre-driver slope and switching-frequency requirements. R1 and R2 can reduce switching current if
required. The charge pump has voltage-supervisor functions such as over- and undervoltage, and selectable
stop conditions for pre-drivers.
PDCPV
CP Supervisor
UV
CP Logic
CP12
CPCLK
MAX
VB
S2
VF
CPDR2
C1
R1
CPDR1
S1
NGND
S4
VF
VF
S3
NGND
Figure 10. Charge-Pump Block Diagram
PDCPV
CCP
CPDR4
C2
R2
CPDR3
16
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