參數(shù)資料
型號(hào)： TAS5110IDAD
廠商： Texas Instruments, Inc.
元件分類： 運(yùn)動(dòng)控制電子
英文描述： TRUE DIGITAL AUDIO AMPLIFIER TAS5110 PWM POWER OUTPUT STAGE
中文描述： 真正的數(shù)字音頻放大器TAS5110的PWM功率輸出級(jí)
文件頁(yè)數(shù)： 8/20頁(yè)
文件大?。?/td> 264K
代理商： TAS5110IDAD
TAS5110
SLES028A
–
MAY 2002
–
REVISED SEPTEMBER 2002
8
www.ti.com
H-bridge output mapping (continued)
The B-side half-bridge output is designed to the following truth table:
INPUTS
PWDN
X
OUTPUTS
DESCRIPTION
RESET
X
PWM_BP
X
PWM_BM
X
SHUTDOWN
0
OUTPUTB
0 or Hi-Z
Shutdown
X
0
X
X
1
Hi-Z
Powerdown
0
1
X
X
1
0
Reset
1
1
0
0
0
0
Shutdown
1
1
0
1
1
0
Normal
1
1
1
0
1
1
Normal
1
1
1
1
0
0
Shutdown
Output is 0 for low voltage, over temperature, or illegal input. Hi-Z is for over current.
control/sense circuitry
The control/sense circuitry consists of the following 3.3-V logic level pins: PWDN, RESET, ERR0, ERR1, and
SHUTDOWN. The active-low PWDN input pin powers down all internal circuitry and forces the H-bridge outputs
to the Hi-Z state. When the PWDN pin is low, the open drain ERR0, ERR1, and SHUTDOWN pins are also
disabled so that their outputs can be pulled high. The active-low RESET input pin forces the H-bridge outputs
to the low-low state and resets the over-current shutdown latch. The PWDN pin overrides the RESET pin. The
ERR0, ERR1, and SHUTDOWN outputs indicate the following conditions in the TAS5110 as shown in the table
below. These three outputs are open-drain connections with internal pullup resistors so that wire-ORed
connections can be made by the user with other external control devices. The short-circuit protect error
condition latches the TAS5110 in this shutdown state and forces the H-bridge outputs to the Hi-Z state until the
device is reset by means of the RESET pin. The illegal PWM input state, over-temperature, and low regulator
voltage error conditions does not latch the device in the shutdown condition. Instead the H-bridge outputs are
forced to the low-low state and the TAS5110 returns to normal operation as soon as the error condition ends.
Loss of clocking PWM signal is also considered an illegal PWM input state.
SHUTDOWN
ERR1
ERR0
FUNCTION
OUTPUTA
OUTPUTB
0
0
0
Illegal PWM input state
Low
Low
0
0
1
Short circuit protect (latch)
Hi-Z
Hi-Z
0
1
0
Over temperature protect
Low
Low
0
1
1
Low regulator voltage protect
Low
Low
1
0
0
Reserved
—
—
1
0
1
Reserved
—
—
1
1
0
High temperature
–
warning
Normal
Normal
1
1
1
Normal operation
Normal
Normal
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