DRV3204E-Q1 Datasheet, PDF (16/39 Pages) Texas Instruments – Three-Phase Brushless Motor Driver

DRV3204E-Q1
SLVSCB5A – OCTOBER 2013 – REVISED JANUARY 2013
www.ti.com
CHARGE PUMP
Description:
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 overvoltage 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
Submit Documentation Feedback
Product Folder Links: DRV3204E-Q1
Copyright © 2013, Texas Instruments Incorporated