- 您现在的位置：买卖IC网 > PDF目录69522 > TPS65230A2DCA (TEXAS INSTRUMENTS INC) 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO48 PDF资料下载
参数资料
| 型号： | TPS65230A2DCA |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO48 |
| 封装： | GREEN, HTSSOP-48 |
| 文件页数： | 4/29页 |
| 文件大小： | 1195K |
| 代理商： | TPS65230A2DCA |
第1页第2页第3页当前第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页
THERMAL SHUTDOWN (TSD)
LOOP COMPENSATION
3.3-V REGULATOR
6-V REGULATOR
USER SELECTABLE SERIAL INTERFACE
SLVSA10A – SEPTEMBER 2009 – REVISED SEPTEMBER 2009.................................................................................................................................... www.ti.com
TPS65230x monitors junction temperature and will disable all power paths (BUCK1-3, USB1 and 2) if junction
temperature rises above the specified trip point. nBOR/nHOT pin will be pulled low if the temperature approaches
the TSD trip point within 40°C. In I2C mode the device will also issue an interrupt and set the HOT bit in
STATUS1 register. The system recovers as soon as the temperature falls below the falling-edge trip
temperature. All three BUCK_ENx pins are discharged and remain discharged during TSD to ensure proper
power sequencing when the system recovers.
In I2C mode the EN_BUCKx and EN_USBx bits of the ENABLE register are reset in a TSD event and interrupt is
issued. To re-enable the output supplies the respective EN_BUCKx bits have to be set through the I2C interface
or the BUCK_ENx pins have to be pulled high. To re-enable the USB power switches in I2C mode, the EN_USBx
bits of the ENABLE register have to be set through the I2C interface.
All three BUCKs are voltage mode converters designed to be stable with ceramic capacitors. Refer to
Component Selection Procedure section for calculating feedback components.
The TPS6532x has a built-in 3.3-V regulator for powering internal circuitry. The 3.3-V rail can also be used for
enabling the BUCK regulators and/or the USB switches, but is not intended for supplying any other external
circuitry. For light loading of this rail during stand-by operation consult TI FAE.
The TPS6532x has a built-in 6-V regulator for powering internal circuitry. The 6-V rail can also be used for
enabling I2C functionality by connecting the pull-up resistor on the USBFLG2/nINT pin to V6V but is not intended
for supplying any other external circuitry. For light loading of this rail during stand-by operation consult TI FAE.
TPS65230 and TPS65231 feature an I2C slave interface which can be enabled or disabled by the user and offers
advanced control and diagnostic features. I2C control is enabled when the pull-up resistor on the USBFLG2/nINT
pin is connected to a supply voltage > 4.5 V and is disabled otherwise. When disabled, BUCK1, 2, 3, and USB1,
2 are controlled through their respective enable pins. When the I2C interface is enabled, USB1 and USB2 are
controlled through the serial interface and BUCK1, 2, and 3 are controlled either through the serial interface or
their respective enable pins. In addition, the USBFLG1/VCTRL pin is reconfigured when I2C is enabled to offer
output voltage control for BUCK2 and BUCK3.
I2C operation offers brownout and thermal shutdown warning, thermal shut down flag, power-good and
under-voltage indicator for BUCK1-3 and USB fault indicator for both USB switches. Whenever a fault is
detected, the associated status bit in the STATUS1 and 2 registers are set and the INT pin is pulled low.
Reading of the STATUS1 and 2 registers resets the flag bits and INT pin is released after all flags have been
reset. Note that in I2C mode the nINT pin is active high with voltage swing of > 3.3 V. To invert the signal and
shift the voltage level down to an I/O compatible level, connect the circuit shown in Figure 5 to the USBFL2/nINT
pin.
INT Dependent Device Pin Configuration
PIN NO.
DEVICE PIN
USBFLG2/INT CONNECTED TO V6V(1)
USBFLG2/INT CONNECTED TO 3.3V(1)
30
USBFLG2/nINT
nINT
Error flag for USB switch 2
28
EN_USB1/SCL
SCL (Clock)
Enable pin for USB switch 1
29
EN_USB2/SDA
SDA (Data)
Enable pin for USB switch 2
44
USBFLG1/VCTRL
Voltage control input for BUCK2 and 3
Error flag for USB switch 1
(1)
Via pull-up resistor
12
Copyright 2009, Texas Instruments Incorporated
相关PDF资料 |
PDF描述 |
|---|---|
| TPS65230A2DCAR | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO48 |
| TPS65231A2DCAR | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO48 |
| TPS65230DCA | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO48 |
| TPS65230DCAR | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO48 |
| TPS65232A2DCA | POWER SUPPLY SUPPORT CKT, PQCC48 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS65230A2DCAR | 功能描述:PMIC 解决方案 Pwr Mgmt IC for Dig Set Top Boxes RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| TPS65231A2DCA | 功能描述:PMIC 解决方案 Pwr Mgmt IC for Dig Set-Top Boxes RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| TPS65231A2DCAR | 功能描述:PMIC 解决方案 Pwr Mgmt IC for Dig Set-Top Boxes RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| TPS65232A0RHA | 功能描述:PMIC 解决方案 Wide Inp Vltg PMU RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| TPS65232A0RHAR | 功能描述:PMIC 解决方案 Wide Inp Vltg PMU RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
发布紧急采购，3分钟左右您将得到回复。