參數(shù)資料
型號(hào)： PTH12060LAHT
廠商： Texas Instruments, Inc.
英文描述： 10-A, 12-V INPUT NON-ISOLATED WIDE-OUTPUT ADJUST POWER MODULE
中文描述： 10甲，12 V輸入非隔離寬輸出調(diào)節(jié)電源模塊
文件頁(yè)數(shù)： 15/29頁(yè)
文件大小： 1028K
代理商： PTH12060LAHT
www.ti.com
V
(1 V/Div)
O
V (5 V/Div)
I (5 A/Div)
t - Time = 5 s/Div
Overcurrent Protection
For protection against load faults, all modules incorporate output overcurrent protection. Applying a load that
exceeds the regulator's overcurrent threshold causes the regulated output to shut down. Following shutdown, a
module periodically attempts to recover by initiating a soft-start power-up. This is described as a
hiccup
mode of
operation, whereby, the module continues in a cycle of successive shutdown and power up until the load fault is
removed. During this period, the average current flowing into the fault is significantly reduced. Once the fault is
removed, the module automatically recovers and returns to normal operation.
Overtemperature Protection (OTP)
The PTH12020, PTV12020, and PTH12030 products have overtemperature protection. These products have an
on-board temperature sensor that 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.
Note: 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 will reduce 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.
Output On/Off Inhibit
For applications requiring output voltage on/off control, each series of the PTH family incorporates an output
Inhibit control pin. The inhibit feature can be used wherever there is a requirement for the output voltage from the
regulator to be turned off.
The power modules function normally when the Inhibit pin is left open-circuit, providing a regulated output
whenever a valid source voltage is connected to V
I
with respect to GND.
Figure 12
shows the typical application of the inhibit function. Note the discrete transistor (Q1). The Inhibit input
has its own internal pull-up to a potential of 5 V to 13.2 V (see footnotes to specification table). The input is not
compatible with TTL logic devices. An open-collector (or open-drain) discrete transistor is recommended for
control.
PTH12060W/L
SLTS217D–MAY 2003–REVISED OCTOBER 2005
Figure 11. Power-Up Waveforms
From the moment a valid input voltage is applied, the soft-start control introduces a short time delay (typically
8 ms–15 ms) before allowing the output voltage to rise. The output then progressively rises to the module’s
setpoint voltage.
Figure 11
shows the soft-start power-up characteristic of the 18-A output product
(PTH12020W), operating from a 12-V input bus, and configured for a 3.3-V output. The waveforms were
measured with a 5-A resistive load and the Auto-Track feature disabled. The initial rise in input current when the
input voltage first starts to rise is the charge current drawn by the input capacitors. Power-up is complete within
25 ms.
15
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PTH12060LAS 功能描述:DC/DC轉(zhuǎn)換器 0.8 to 1.8V 10A 12V Input WideAdj 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(biāo)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(fēng)格:SMD/SMT 封裝 / 箱體尺寸:
PTH12060LAST 功能描述:DC/DC轉(zhuǎn)換器 0.8 to 1.8V 10A 12V Input WideAdj 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(biāo)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(fēng)格:SMD/SMT 封裝 / 箱體尺寸:
PTH12060LAZ 功能描述:DC/DC轉(zhuǎn)換器 0.8 to 1.8V 10A 12V Input WideAdj 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(biāo)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(fēng)格:SMD/SMT 封裝 / 箱體尺寸:
PTH12060LAZT 功能描述:DC/DC轉(zhuǎn)換器 10.8-13.2Vin 1.8V10A 0.995" x0.620"x0.354 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(biāo)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(fēng)格:SMD/SMT 封裝 / 箱體尺寸:
PTH12060W 制造商:ARTESYN 制造商全稱:Artesyn Technologies 功能描述:DC/DC CONVERTERS POLA Non-isolated
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