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參數(shù)資料
| 型號(hào)： | TAS5110DAP |
| 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) |
| 文件頁數(shù)： | 7/20頁 |
| 文件大小： | 264K |
| 代理商： | TAS5110DAP |
TAS5110
SLES028A
–
MAY 2002
–
REVISED SEPTEMBER 2002
7
www.ti.com
functional description
PWM H-bridge state control
The digital interface control signals consists of PWM_AP, PWM_AM, PWM_BP, and PWM_BM. These signals
are a complementary differential signal format for the A-side half-bridge and the B-side half-bridge.
bootstrapped gate drive
The TAS5110 includes two dedicated bootstrapped power supplies. A bootstrap capacitor is connected
between the individual bootstrap pin and the associated output. For example, a capacitor is connected between
the BOOTSTRAPA pin and OUTPUTA pin, and another capacitor is connected between the BOOTSTRAPB
pin and the OUTPUTB pin. The bootstrap power supply minimizes the number of high voltage power supply
levels externally supplied to the system while providing a low-noise supply level for driving the high-side
N-channel DMOS transistors.
low-dropout voltage regulator
Two on-chip low-dropout voltage regulators (LDO) are provided to minimize the number of external power
supplies needed for the system. These voltage regulators are for internal circuits only and cannot be used for
external circuitry. Each LDO is dedicated to a half-bridge and its gate driver. An LDO output capacitor is
connected between the individual LDO output pin and the associated output return. For example, a capacitor
is connected between the LDROUTA pin and PVSS pin, and another capacitor is connected between the
LDROUTB pin and PVSS pin.
high-current H-bridge output stage
The positive outputs of the H-bridge are the two OUTPUTA pins. The negative outputs of the H-bridge are the
two OUTPUTB pins. The logic for the input command to H-bridge outputs is described in the H-bridge output
mapping section below. When the TAS5110 is in the normal mode, as seen in the H-bridge output mapping
tables, the outputs are decoded from the inputs. However, the TAS5110 is immediately shut down if any of the
following error conditions occur: over-current, over-temperature, low regulator output voltage, or an illegal PWM
input state is applied. For these conditions, the outputs are set to the appropriate disabled state as specified
in the H-bridge output mapping section, and the SHUTDOWN pin is set low.
H-bridge output mapping
The A-side half-bridge output is designed to the following truth table:
INPUTS
OUTPUTS
DESCRIPTION
RESET
X
X
0
1
1
1
1
PWDN
X
0
1
1
1
1
1
PWM_AP
X
X
X
0
0
1
1
PWM_AM
X
X
X
0
1
0
1
SHUTDOWN
0
1
1
0
1
1
0
OUTPUTA
0 or Hi-Z
Hi-Z
0
0
0
1
0
Shutdown
Powerdown
Reset
Shutdown
Normal
Normal
Shutdown
Output is 0 for low voltage, over temperature, and illegal input. Hi-Z is for over current.
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| TAS5110DAPR | TRUE DIGITAL AUDIO AMPLIFIER TAS5110 PWM POWER OUTPUT STAGE |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| TAS5110DAPR | 功能描述:音頻放大器 Dig Amp Power Stage RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TAS5110DAPRG4 | 功能描述:音頻放大器 Dig Amp Power Stage RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TAS5110IDAD | 制造商:TI 制造商全稱:Texas Instruments 功能描述:TRUE DIGITAL AUDIO AMPLIFIER TAS5110 PWM POWER OUTPUT STAGE |
| TAS5110IDADR | 制造商:TI 制造商全稱:Texas Instruments 功能描述:TRUE DIGITAL AUDIO AMPLIFIER TAS5110 PWM POWER OUTPUT STAGE |
| TAS5110IDAP | 制造商:TI 制造商全稱:Texas Instruments 功能描述:TRUE DIGITAL AUDIO AMPLIFIER TAS5110 PWM POWER OUTPUT STAGE |
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