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参数资料
| 型号： | TAS5101DAP |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 15 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO32 |
| 封装： | POWERPAD, PLASTIC, MO-153, HTSSOP-32 |
| 文件页数： | 10/14页 |
| 文件大小： | 185K |
| 代理商： | TAS5101DAP |
TAS5101
SLES039 – JUNE 2002
5
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 H-bridge and the B-side H-bridge.
bootstrapped gate drive
The TAS5101 includes 2 dedicated bootstrapped power supplies. A bootstrap capacitor is connected between
the individual bootstrap pin and the associated output as described in the application note SLAA117. For
example, a capacitor will be connected between the BOOTSTRAPA pin and OUTPUTA pin, and another
capacitor will be 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. See application note
SLAA117 for details.
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 an H-bridge and its gate driver. An LDO output capacitor is
connected between the individual LDO output pin and the associated output return as described in the
application note SLAA117. For example, a capacitor will be connected between the LDROUTA pin and PVSS
pin, and another capacitor will be connected between the LDROUTB pin and PVSS pin. This capacitor is usually
0.1
F.
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 TAS5101 is in the normal mode, as seen in the H-bridge output mapping
tables, the outputs are decoded from the inputs. However, the TAS5101 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 and B-side H-bridge output is designed to the following truth table:
INPUTS
OUTPUTS
DESCRIPTION
RESET
HiZ
PWM_AP/BP
PWM_AM/BM
SHUTDOWN
OUTPUTA/B
DESCRIPTION
X
0
0 or Hi-Z
Shutdown
X
0
X
1
Hi-Z
High Impedance
0
1
X
1
0
Low
1
0
Low
1
0
1
0
Normal
1
0
1
Normal
1
0
Low
Output is 0 for low voltage, over temperature, and illegal input. Hi-Z is for over current.
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| TAS5101DAPR | 功能描述:音频放大器 Stereo Dig Amp Power Stage RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TAS5101IDAP | 功能描述:音频放大器 Stereo Dig Amp Power Stage RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TAS5101IDAPG4 | 功能描述:音频放大器 Stereo Dig Amp Power Stage RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TAS5101IDAPR | 功能描述:音频放大器 Stereo Dig Amp Power Stage RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TAS5101IDAPRG4 | 功能描述:音频放大器 Stereo Dig Amp Power Stage RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
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