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参数资料
| 型号： | TPIC9201PWPRG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO20 |
| 封装： | GREEN, PLASTIC, HTSSOP-20 |
| 文件页数： | 13/18页 |
| 文件大小： | 434K |
| 代理商： | TPIC9201PWPRG4 |
www.ti.com
DETAILED DESCRIPTION
MICROCONTROLLER POWER SUPPLY
AND MULTIPLE LOW-SIDE DRIVER
SLIS115D – APRIL 2005 – REVISED FEBRUARY 2008
The 5-V regulator is powered from VIN, and the regulated output is within 5 V ± 5% over the operating conditions.
The open-drain power-on reset (RST) pin remains low until the regulator exceeds the set threshold, and the timer
value set by the capacitor on the reset delay (RDELAY) pin expires. If both of these conditions are satisfied, RST is
asserted high. This signifies to the microcontroller that serial communications can be initiated to the TPIC9201.
The serial communications is an 8-bit format, with data transfer synchronized using a serial clock from the
microcontroller. A single register controls all the outputs (one bit per output). The default value is zero (OFF). If
an output requires pulse width modulation (PWM) function, the register must be updated at a rate faster than the
desired PWM frequency. OUT1 can be controlled by serial input from the microcontroller or with the dedicated
enable (EN1) pin. If EN1 is pulled low or left open, the serial input through the shift register controls OUT1. If
EN1 is pulled high, OUT1 always is turned on, and the serial input for OUT1 is ignored.
The SYN input translates the image of the mains voltage through the secondary of the transformer. The SYN
input has a resistor to protect from high currents into the IC. The zero-voltage synchronization output translates
the ac-line cycle frequency into a low-frequency clock, which can be used for a timing reference and to help
power loads on the ac-line peak voltage (to reduce in-rush currents).
If RST is asserted, all outputs are turned OFF internally, and the input register is reset to all zeroes. The
microcontroller must write to the register to turn the outputs ON again.
4
Copyright 2005–2008, Texas Instruments Incorporated
Product Folder Link(s): TPIC9201
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPIC9202 | 制造商:TI 制造商全称:Texas Instruments 功能描述:MICROCONTROLLER POWER SUPPLY AND MULTIPLE LOW-SIDE DRIVER |
| TPIC9202_07 | 制造商:TI 制造商全称:Texas Instruments 功能描述:MICROCONTROLLER POWER SUPPLY AND MULTIPLE LOW-SIDE DRIVER |
| TPIC9202PWP | 功能描述:外围驱动器与原件 - PCI Micro Power Supply and Low-Side Driver RoHS:否 制造商:PLX Technology 工作电源电压: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:FCBGA-1156 封装:Tray |
| TPIC9202PWPG4 | 功能描述:外围驱动器与原件 - PCI Micro Power Supply and Low-Side Driver RoHS:否 制造商:PLX Technology 工作电源电压: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:FCBGA-1156 封装:Tray |
| TPIC9202PWPR | 功能描述:外围驱动器与原件 - PCI Micro Power Supply and Low-Side Driver RoHS:否 制造商:PLX Technology 工作电源电压: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:FCBGA-1156 封装:Tray |
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