参数资料
型号: PTH08T220WAZ
厂商: TEXAS INSTRUMENTS INC
元件分类: 电源模块
英文描述: 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
封装: ROHS COMPLIANT, PLASTIC, DIP-11
文件页数: 19/38页
文件大小: 1290K
代理商: PTH08T220WAZ
Smart Sync
C 2
i
C 1
i
R
1
SET
R
2
SET
PTH08T220W
VI
VO
INH/ UVLO
+Sense
–Sense
GND
Track SYNC
TT
V Adj
O
V Adj
O
V 1
O
V 2
O
VI = 5 V
0
o
GND
PTH08T240W
+Sense
–Sense
GND
Track SYNC
TT
180
o
GND
Vcc
GND
Q
PRE
CLR
CLK
D
fclock= 2 Xfmodules
SN74LVC2G74
C 1
o
C 2
o
SLTS252K – NOVEMBER 2005 – REVISED JUNE 2009................................................................................................................................................... www.ti.com
Smart Sync is a feature that allows multiple power modules to be synchronized to a common frequency. Driving
the Smart Sync pins with an external oscillator set to the desired frequency, synchronizes all connected modules
to the selected frequency. The synchronization frequency can be higher or lower than the nominal switching
frequency of the modules within the range of 240 kHz to 400 kHz. Synchronizing modules powered from the
same bus eliminates beat frequencies reflected back to the input supply, and also reduces EMI filtering
requirements. Eliminating the low beat frequencies (usually<10kHz) allows the EMI filter to be designed to
attenuate only the synchronization frequency. Power modules can also be synchronized out of phase to minimize
ripple current and reduce input capacitance requirements. Figure 26 shows a standard circuit with two modules
syncronized 180° out of phase using a D flip-flop.
Figure 26. Smart Sync Schematic
26
Copyright 2005–2009, Texas Instruments Incorporated
Product Folder Link(s): PTH08T220W PTH08T221W
相关PDF资料
PDF描述
PTH08T221WAS 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
PTH08T221WAST 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
PTH08T221WAZT 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
PTH08T220WAST 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
PTH08T220WAZT 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
相关代理商/技术参数
参数描述
PTH08T220WAZ 制造商:Texas Instruments 功能描述:DC/DC Converter (DC-DC) / Switching Regu
PTH08T220WAZT 功能描述:DC/DC转换器 16A 4.5-14V-Input Wide-Out Adj Pwr Mdl RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压(标称): 输出端数量:1 输出电压(通道 1):3.3 V 输出电流(通道 1):600 mA 输出电压(通道 2): 输出电流(通道 2): 安装风格:SMD/SMT 封装 / 箱体尺寸:
PTH08T221W 制造商:TI 制造商全称:Texas Instruments 功能描述:16-A, 4.5-V to 14-V INPUT, NON-ISOLATED, WIDE-OUTPUT, ADJUSTABLE POWER MODULE WITH TurboTrans
PTH08T221WAD 功能描述:DC/DC转换器 16A 4.5V to 14V Inp Ceramic Cap Version RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压(标称): 输出端数量:1 输出电压(通道 1):3.3 V 输出电流(通道 1):600 mA 输出电压(通道 2): 输出电流(通道 2): 安装风格:SMD/SMT 封装 / 箱体尺寸:
PTH08T221WAD 制造商:Texas Instruments 功能描述:Power Module