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| 型号： | TPS54353PWPR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 6.5 A SWITCHING REGULATOR, 600 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封装： | GREEN, PLASTIC, HTSSOP-16 |
| 文件页数： | 2/35页 |
| 文件大小： | 858K |
| 代理商： | TPS54353PWPR |
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TPS54352,TPS54353
TPS54354,TPS54355
TPS54356,TPS54357
SLVS519A MAY 2004 REVISED OCTOBER 2004
www.ti.com
10
Table 3.
SWITCHING FREQUENCY
SYNC PIN
RT PIN
250 kHz, internally set
Generates SYNC output signal
AGND
500 kHz, internally set
Generates SYNC output signal
Float
Externally set to 250 kHz to 700 kHz
Terminate to quiet ground
with 10-k
resistor.
R = 215 k
to 69 k
Externally synchronized frequency
Synchronization Signal
Set RT resistor equal to 90% to 110% of external synchronization
frequency.When using a dual setup (see Figure 27 for example),
if the master 35x device RT pin is left floating, use a 110 k
resistor to tie the slave RT pin to ground. Conversely, if the master
35x device RT pin is grounded, use a 237 k
resistor to tie the
slave RT pin to ground.
180
5 Out of Phase Synchronization (SYNC)
The SYNC pin is configurable as an input or as an output,
per the description in the previous section. When
operating as an input, the SYNC pin is a falling-edge
triggered signal (see Figures 3, 4, and 19). When operating
as an output, the signal’s falling edge is approximately
180
° out of phase with the rising edge of the PH pins. Thus,
two TPS5435x devices operating in a system can share an
input capacitor and draw ripple current at twice the
frequency of a single unit.
When operating the two TPS5435x devices 180
° out of
phase, the total RMS input current is reduced. Thus
reducing the amount of input capacitance needed and
increasing efficiency.
When synchronizing a TPS5435x to an external signal, the
timing resistor on the RT pin must be set so that the
oscillator is programmed to run at 90% to 110% of the
synchronization frequency.
VI(SYNC)
VO(PH)
Figure 3. SYNC Input Waveform
相关PDF资料 |
PDF描述 |
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| TPS54356PWPG4 | 6.5 A SWITCHING REGULATOR, 600 kHz SWITCHING FREQ-MAX, PDSO16 |
| TPS54356PWPR | 6.5 A SWITCHING REGULATOR, 600 kHz SWITCHING FREQ-MAX, PDSO16 |
| TPS54354PWPRG4 | 6.5 A SWITCHING REGULATOR, 600 kHz SWITCHING FREQ-MAX, PDSO16 |
| TPS54355PWPR | 6.5 A SWITCHING REGULATOR, 600 kHz SWITCHING FREQ-MAX, PDSO16 |
| TPS54357PWPR | 6.5 A SWITCHING REGULATOR, 600 kHz SWITCHING FREQ-MAX, PDSO16 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS54353PWPRG4 | 功能描述:开关变换器、稳压器与控制器 4.5 to 20V Inp 3-A Synch PWM Switch RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| TPS54354 | 制造商:TI 制造商全称:Texas Instruments 功能描述:4.5V TO 20 V INPUT 3-A OUTPUT SYNCHRONOUS PWM SWITCHER WITH INTEGRATED FET |
| TPS54354-EP | 制造商:TI 制造商全称:Texas Instruments 功能描述:4.5-V TO 20-V INPUT, 3-A OUTPUT SYNCHRONOUS PWM SWITCHES |
| TPS54354MPWPREP | 功能描述:直流/直流开关调节器 Mil Enh 4.5V-20V 3A Out Synch-Buck PWM 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 |
| TPS54354PWP | 功能描述:直流/直流开关调节器 4.5 to 20V Inp 3-A Synch PWM Switch 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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