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參數資料
型號: TPS65950ZXNR
廠商: TEXAS INSTRUMENTS INC
元件分類: 消費家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PBGA209
封裝: 7 X 7 MM, 0.40 MM PITCH, PLASTIC, BGA-209
文件頁數: 143/167頁
文件大小: 2566K
代理商: TPS65950ZXNR
6.1.5.2 External Components and Application Schematic
PreDriverD
Onboard
Chip
ClassD
(TPA2010D1...)
IN+
IN–
Closedto
external
classC
C /C
PL
PR
032-025
C
/C
PR.O
PL.O
R
/R
PL.O
PR.O
C
/C
PL.M
PR.M
R
/R
PR
PL
R
/R
PR.M
PL.M
6.1.6
Vibrator H-Bridge
6.1.6.1 Vibrator H-Bridge Output Characteristics
TPS65950
Integrated Power Management/Audio Codec
www.ti.com
SWCS032 – OCTOBER 2008
Figure 6-12 is a simplified schematic for the external class-D predriver.
Figure 6-12. Predriver for External Class D
In Figure 6-12, input resistor (RPR or RPL) sets the gain of the external class D. For TPS2010D1, the gain
is defined according to the following equation:
Gain (V/V) = 2*150*103/(RPR or RPL)
RPR or RPL > 15 k
NOTE
For other component values, see Table 15-1.
A digital signal from the pulse width modulated generator is fed to the vibrator H-bridge driver. The vibrator
H-bridge is a differential driver that drives vibrator motors. The differential output allows dual rotation
directions.
Table 6-9 lists the output characteristics of the vibrator H-bridge.
Table 6-9. Vibrator H-Bridge Output Characteristics
Parameter
Test Conditions
Min(1)
Typ(2) Max(3)
Unit
VBAT voltage
2.8
3.6
4.8
V
Differential output swing (16-
load)
VBAT = 2.8 V
3.6
VPP
VBAT = 3.5 V
4.3
Output resistance
4
Load capacitance
100
pF
Load resistance
8
16
60
Load inductance
30
300
H
Total harmonic distortion
10%
Operating frequency
20
10k
Hz
(1)
Min = Minimum value
(2)
Typ = Typical value
(3)
Max = Maximum value
Audio/Voice Module
77
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