DRV3202-Q1_15 Datasheet, PDF (29/39 Pages) Texas Instruments – 3-Phase Brushless Motor Driver

DRV3202-Q1
www.ti.com
REGULATORS
SLVSBJ4A – OCTOBER 2012 – REVISED DECEMBER 2012
Description
The regulator block offers a 5-V LDO and a 3.3-V LDO. The V_CC LDO regulates VB down to 5 V with an external
PNP controlled by the regulator block. The 5-V LDO is supplied to the MCU and other components. The 5-V LDO
is protected against a short to GND fault, and the external resistors R1 and R2 set the undervoltage. The V_DD
regulator regulates VB down to 3.3-V with an internal FET and a controller.
The regulators detect the overvoltage and undervoltage events of both supplies.
VB
OC
Current
Limit
BG
Trim
+
AMP
-
VCF
B
VCC
B
VCCT(V_CC)
R_sns
PNP Tr
CVCC
AMPG
VLVD
R1
Supervisor
Supervisor
R2
OV
UV
* R_sns = 0.2 V / ICLVCC
* VCCUV = 2.325 x {(R1+R2) / R2}
Figure 27. V_CC Block Diagram
VB
BG
+
AMP
-
V_DD
AMPG
OV
Supervisor
UV
Figure 28. V_DD Block Diagram
CVDD
Copyright © 2012, Texas Instruments Incorporated
Product Folder Links: DRV3202-Q1
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