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参数资料
| 型号： | TPS62110HPWP |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 1.5 A SWITCHING REGULATOR, 1100 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封装： | GREEN, PLASTIC, DSO-16 |
| 文件页数： | 9/25页 |
| 文件大小： | 0K |
| 代理商： | TPS62110HPWP |
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SLVSAO9B
– DECEMBER 2010 – REVISED FEBRUARY 2011
(4)
The overall output ripple voltage is the sum of the voltage spike caused by the output capacitor ESR plus the
voltage ripple caused by charge and discharging the output capacitor:
(5)
Where the highest output voltage ripple occurs at the highest input voltage VI.
INPUT CAPACITOR SELECTION
The nature of the buck converter is a pulsating input current; therefore, a low ESR input capacitor is required for
best input voltage filtering, and minimizing the interference with other circuits caused by high input voltage
spikes. The input capacitor should have a minimum value of 10
F and can be increased without any limit for
better input voltage filtering. The input capacitor should be rated for the maximum input ripple current calculated
as:
(6)
The worst-case RMS ripple current occurs at D = 0.5 and is calculated as: IRMS = IO/2. Ceramic capacitors show
a good performance because of their low ESR value, and they are less sensitive against voltage transients
compared to tantalum capacitors. Place the input capacitor as close as possible to the input pin of the IC for best
performance
FEEDFORWARD CAPACITOR SELECTION
The feedforward capacitor (Cff) is needed to compensate for parasitic capacitance from the feedback pin to GND.
Typically, a value of 4.7 pF to 22 pF is needed for an output voltage divider with a equivalent resistance (R1 in
parallel with R2) in the 150 k
range. The value can be chosen based on best transient performance and lowest
output voltage ripple in PFM mode.
RECOMMENDED CAPACITORS
It is recommended that only X5R or X7R ceramic capacitors be used as input/output capacitors. Ceramic
capacitors show a dc-bias effect. This effect reduces the effective capacitance when a dc-bias voltage is applied
across a ceramic capacitor, as on the output and input capacitor of a dc/dc converter. The effect may lead to a
significant capacitance drop especially for high input/output voltages and small capacitor packages. See the
manufacturer
's data sheet about the performance with a dc bias voltage applied. It may be necessary to choose
a higher voltage rating or nominal capacitance value to get the required value at the operating point. The
capacitors listed in Table 3 have been tested with the TPS62110 with good performance.
Table 3. List of Capacitors(1)(2)
MANUFACTURER
PART NUMBER
SIZE
VOLTAGE
CAPACITANCE
TYPE
TMK316BJ106KL
1206
25 V
10
F
Taiyo Yuden
Ceramic
EMK325BJ226KM
1210
16 V
22
F
C3225X5R1E106M
25 V
10
F
1210
TDK
C3225X7R1C226M
16 V
22
F
Ceramic
C3216X5R1E106MT
1206
25 V
10
F
(1)
Component selections are for 25
°C only and will change for new temperature range.
(2)
Components have not been validated for extreme high temperature operation.
2010–2011, Texas Instruments Incorporated
17
Product Folder Link(s): TPS62110-HT
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| TPS62110MRSAREP | 功能描述:直流/直流开关调节器 Mil Enh 17V 1.5A Synch Step-Down Conv 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 |
| TPS62110QRSAREP | 功能描述:IC REG BUCK SYNC ADJ 1.5A 16QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:20 系列:SIMPLE SWITCHER® 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:12V 输入电压:4 V ~ 60 V PWM 型:电压模式 频率 - 开关:52kHz 电流 - 输出:1A 同步整流器:无 工作温度:-40°C ~ 125°C 安装类型:通孔 封装/外壳:16-DIP（0.300"，7.62mm） 包装:管件 供应商设备封装:16-DIP 其它名称:*LM2575HVN-12LM2575HVN-12 |
| TPS62110QRSARQ1 | 功能描述:直流/直流开关转换器 AC Adj,1.5A,17V Vin Step-Down Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| TPS62110RSA | 制造商:Texas Instruments 功能描述: |
| TPS62110RSAR | 功能描述:直流/直流开关调节器 Adj 1.5-A 17-V Vin Step-Down Converter 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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