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參數(shù)資料
| 型號： | PTH04T231WAD |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| 封裝： | ROHS COMPLIANT, DIP-10 |
| 文件頁數(shù)： | 18/36頁 |
| 文件大小： | 1160K |
| 代理商： | PTH04T231WAD |
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Overtemperature Protection (OTP)
Smart Sync
PTH04T240W
Vi
Track
GND
VoAdj
Vo
TT
+Sense
Sense
Inhibit/
UVLO
GND
D
PRE
PTH04T230W
Vi
GND
VoAdj
Vo
TT
+Sense
Sense
+
Inhibit/
UVLO
Sync
+
Q
CLK
SN74LVC2G74
+
SYNC
RSET1
fCLK = 2 x fMODULE
VO1
0
°
180
°
VCC
CLR
Q
VO2
CO1
CO2
UDG06054
CI1
CI2
RSET2
Track
VI =5 V
www.ti.com ............................................................................................................................................. SLTS271C – SEPTEMBER 2006 – REVISED MARCH 2009
A thermal shutdown mechanism protects the module’s internal circuitry against excessively high temperatures. A
rise in the internal temperature may be the result of a drop in airflow, or a high ambient temperature. If the
internal temperature exceeds the OTP threshold, the module’s Inhibit control is internally pulled low. This turns
the output off. The output voltage drops as the external output capacitors are discharged by the load circuit. The
recovery is automatic, and begins with a soft-start power up. It occurs when the sensed temperature decreases
by about 10°C below the trip point.
The overtemperature protection is a last resort mechanism to prevent thermal stress to the regulator.
Operation at or close to the thermal shutdown temperature is not recommended and reduces the long-term
reliability of the module. Always operate the regulator within the specified safe operating area (SOA) limits for
the worst-case conditions of ambient temperature and airflow.
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 (see Electrical Specifications table for
frequency limits). Synchronizing modules powered from the same bus eliminates beat frequencies reflected back
to the input supply, and also reduces EMI filtering requirements. These are the benefits of Smart Sync. Power
modules can also be synchronized out of phase to minimize source current loading and minimize input
capacitance requirements. Figure 23 shows a standard circuit with two modules syncronized 180° out of phase
using a D flip-flop.
Figure 23. Typical SmartSync Circuit
Copyright 2006–2009, Texas Instruments Incorporated
25
Product Folder Link(s): PTH04T230W PTH04T231W
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相關代理商/技術參數(shù) |
參數(shù)描述 |
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| PTH04T231WAS | 功能描述:DC/DC轉換器 6A 2.2V-5.5Vin Non- Iso Adj Pwr Module RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風格:SMD/SMT 封裝 / 箱體尺寸: |
| PTH04T231WAST | 功能描述:DC/DC轉換器 6A 2.2V-5.5Vin Non- Iso Adj Pwr Module RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風格:SMD/SMT 封裝 / 箱體尺寸: |
| PTH04T231WAZ | 功能描述:DC/DC轉換器 6A 2.2V-5.5Vin Non- Iso Adj Pwr Module RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風格:SMD/SMT 封裝 / 箱體尺寸: |
| PTH04T231WAZT | 功能描述:DC/DC轉換器 6A 2.2V-5.5Vin Non- Iso Adj Pwr Module RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風格:SMD/SMT 封裝 / 箱體尺寸: |
| PTH04T240F | 制造商:TI 制造商全稱:Texas Instruments 功能描述:10-A, 2.2-V to 5.5-V INPUT, NON-ISOLATED POWER MODULE FOR 3-GHz DSP SYSTEMS |
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