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参数资料
| 型号： | TPS63010YFF |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 2.4 A SWITCHING REGULATOR, 2600 kHz SWITCHING FREQ-MAX, BGA20 |
| 封装： | 2.14 X 1.93 MM, LEAD FREE, DSBGA-20 |
| 文件页数： | 10/28页 |
| 文件大小： | 662K |
| 代理商： | TPS63010YFF |
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Synchronization
Device Enable
Output Voltage Selection
Softstart and Short-Circuit Protection
Undervoltage Lockout
Overvoltage Protection
Overtemperature Protection
SLVS653A – JUNE 2008 – REVISED AUGUST 2009 ........................................................................................................................................................ www.ti.com
Connecting a clock signal at SYNC forces the device to synchronize to the connected clock frequency.
Synchronization is done by a PLL, so synchronizing to lower and higher frequencies compared to the internal
clock works without any issues. The PLL can also tolerate missing clock pulses without the converter
malfunctioning. The SYNC input supports standard logic thresholds. If synchronization is not used SYNC must
be tied low or connected to GND. Applying a clock signal to SYNC automatically disables the power save mode.
The device is put into operation when EN is set high. It is put into a shutdown mode when EN is set to GND. In
shutdown mode, the regulator stops switching, all internal control circuitry is switched off, and the load is
disconnected from the input. This also means that the output voltage can drop below the input voltage during
shutdown. During start-up of the converter, the duty cycle and the peak current are limited in order to avoid high
peak currents flowing from the input.
To program the output voltage at an adjustable device option, like TPS63010 an external resistive feedback
divider, connected to FB must be used. For the fixed output voltage versions, FB is used as an output voltage
sense and must be connected to the output voltage VOUT. All fixed output voltage versions have two different
output voltages programmed internally. They are selected by programming high or low at VSEL. The higher
output voltage is selected by programming VSEL high and the lower output voltage is selected by programming
VSEL low. VSEL also supports standard logic thresholds.
After being enabled, the device starts operating. The average current limit ramps up from an initial 400 mA
following the output voltage increasing. At an output voltage of about 1.2 V, the current limit is at its nominal
value. If the output voltage does not increase, the current limit will not increase. There is no timer implemented.
Thus, the output voltage overshoot at startup, as well as the inrush current, is kept at a minimum. The device
ramps up the output voltage in a controlled manner even if a very large capacitor is connected at the output.
When the output voltage does not increase above 1.2 V, the device assumes a short-circuit at the output, and
keeps the current limit low to protect itself and the application. At a short at the output during operation, the
current limit is also decreased accordingly. At 0 V at the output, for example, the output current will not exceed
about 400 mA.
If the supply voltage on VINA is lower than its approximate threshold (see electrical characteristics table), an
undervoltage lockout function prevents device start-up. When in operation, the device automatically enters the
shutdown mode if the voltage on VINA drops below the undervoltage lockout threshold. The device automatically
restarts if the input voltage recovers to the minimum operating input voltage.
If, for any reason, the output voltage is not fed back properly to the input of the voltage amplifier, control of the
output voltage will not work anymore. Therefore overvoltage protection is implemented to avoid the output
voltage exceeding critical values for the device and possibly for the system it is supplying. The implemented
overvoltage protection circuit monitors the output voltage internally as well. In case it reaches the overvoltage
threshold the voltage amplifier regulates the output voltage to this value.
The device has a built-in temperature sensor which monitors the internal IC temperature. If the temperature
exceeds the programmed threshold (see electrical characteristics table), the device stops operating. As soon as
the IC temperature has decreased below the programmed threshold, it again starts operating. There is a built-in
hysteresis to avoid unstable operation at IC temperatures at the overtemperature threshold.
18
Copyright 2008–2009, Texas Instruments Incorporated
Product Folder Link(s): TPS63010 TPS63011 TPS63012
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相关代理商/技术参数 |
参数描述 |
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| TPS63010YFFR | 功能描述:直流/直流开关调节器 Hi Eff Sgl Inductor Buck-Boost Cnvrtr RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| TPS63010YFFT | 功能描述:直流/直流开关调节器 Hi Eff Sgl Inductor Buck-Boost Cnvrtr RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| TPS63010YFFT | 制造商:Texas Instruments 功能描述:Power Supply IC |
| TPS63011YFFR | 功能描述:直流/直流开关调节器 Hi Eff Sgl Inductor Buck-Boost Cnvrtr RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| TPS63011YFFT | 功能描述:直流/直流开关调节器 Hi Eff Sgl Inductor Buck-Boost Cnvrtr RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
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