DRV3203E-Q1 Datasheet, PDF (17/39 Pages) Texas Instruments – Three-Phase Brushless Motor Driver

DRV3203E-Q1
www.ti.com
SLVSCE5A – NOVEMBER 2013 – REVISED JANUARY 2014
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 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
S3
VF
VF
PDCPV
CCP
CPDR4
C2
R2
CPDR3
NGND
Figure 10. Charge-Pump Block Diagram
Table 5. Charge-Pump Electrical Characteristics
PARAMETER
CONDITIONS
VB = 12 V, T_A = –40°C to +150℃ (unless otherwise specified)
CHARGE PUMP
Vchv1_0
Output voltage, PDCPV
VB = 5.3 V, load = 0 mA, C1 = C2 = 47 nF,
CCP = 2.2 µF, R1 = R2 = 0 Ω
Vchv1_1
Output voltage, PDCPV
VB = 5.3 V, Ioad = 5 mA, C1 = C2 = 47 nF,
CCP = 2.2 µF, R1 = R2 = 0 Ω
Vchv1_2
Output voltage, PDCPV
VB = 5.3 V, Ioad = 8 mA, C1 = C2 = 47 nF,
CCP = 2.2 µF, R1 = R2 = 0 Ω
Vchv2_0
Output voltage, PDCPV
VB = 12 V, Ioad = 0 mA, C1 = C2 = 47 nF,
CCP = 2.2 µF, R1 = R2 = 0 Ω
Vchv2_1
Output voltage, PDCPV
VB = 12 V, Ioad = 11 mA, C1 = C2 = 47 nF,
CCP = 2.2 µF, R1 = R2 = 0 Ω
MIN TYP
MAX
VB + 7 VB + 8
-
VB + 5.5
VB + 4.5
VB + 10
VB + 9.5
VB +
6.5
VB +
5.5
VB +
12
VB +
11.5
-
-
VB + 14
VB +
13.5
UNITS
V
V
V
V
V
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