- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄44967 > LSM-1/10-D3-C (MURATA POWER SOLUTIONS INC) 1-OUTPUT DC-DC REG PWR SUPPLY MODULE PDF資料下載
參數(shù)資料
| 型號(hào)： | LSM-1/10-D3-C |
| 廠商： | MURATA POWER SOLUTIONS 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, SMT-6 |
| 文件頁(yè)數(shù)： | 10/13頁(yè) |
| 文件大小： | 488K |
| 代理商： | LSM-1/10-D3-C |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)當(dāng)前第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)
The highest temperatures in LSM D3 SMT's occur at their output inductor,
whose heat is generated primarily by I2R losses. The derating curves were
developed using thermocouples to monitor the inductor temperature and
varying the load to keep that temperature below +110°C under the assorted
conditions of air flow and air temperature. Once the temperature exceeds
+115°C (approx.), the thermal protection will disable the converter. Automatic
restart occurs after the temperature has dropped below +110°C.
As you may deduce from the derating curves and observe in the efficiency
curves on the following pages, LSM D3 SMT's are more efficient at lower
current levels. Also I2R losses in the output inductor are significantly less at
lower current levels. Consequently, LSN-D3 SMT's deliver very impressive
temperature performance if operating at less than full load.
Lastly, when LSM D3 SMT's are installed in system boards, they are obvi-
ously subject to numerous factors and tolerances not taken into account here.
If you are attempting to extract the most current out of these units under
demanding temperature conditions, we advise you to monitor the output-
inductor temperature to ensure it remains below +110°C at all times.
Output Reverse Conduction
Many DC/DC's using synchronous rectification suffer from Output Reverse
Conduction. If those devices have a voltage applied across their output before
a voltage is applied to their input (this typically occurs when another power
supply starts before them in a power-sequenced application), they will either
fail to start or self destruct. In both cases, the cause is the "freewheeling" or
"catch" FET biasing itself on and effectively becoming a short circuit.
LSM D3 SMT DC/DC converters do not suffer from Output Reverse Conduc-
tion. They employ proprietary gate drive circuitry that makes them immune
to applied output voltages.
Thermal Considerations and Thermal Protection
The typical output-current thermal-derating curves shown below enable
designers to determine how much current they can reliably derive from each
model of the LSM D3 SMT's under known ambient-temperature and air-flow
conditions. Similarly, the curves indicate how much air flow is required to
reliably deliver a specific output current at known temperatures.
Figure 7. Trim Connections Using Fixed Resistors
Figure 6. Trim Connections Using a Trimpot
Trim Equations
Note: Resistor values are in k . Accuracy of adjustment is subject to
tolerances of resistors and factory-adjusted, initial output accuracy.
VO = desired output voltage. VO
NOM = nominal output voltage.
Note: LSM-0.8/10-D3 is not trimmable.
UP
VO – 1
RT (k ) =
1.296
DOWN
1 – VO
RT
(k ) =
–
1
–
1
1.62(VO – 0.8)
UP
VO – 1.2
RT (k ) =
1.992
DOWN
1.2 – VO
RT
(k ) =
–
2.37
–
2.37
2.49(VO – 0.8)
UP
VO – VO NOM
RT (k ) =
1.896
DOWN
VO NOM – VO
RT
(k ) =
–
4.99
–
4.99
2.37(VO – 0.8)
LSM-1/10-D3
Model
LSM-1.2/10-D3
LSM-1.5/10-D3
LSM-1.8/10-D3
LSM-2/10-D3
LSM-2.5/10-D3
Trim Equations
Note:
Install either a fixed
trim-up resistor
or a fixed trim-down
resistor depending upon
desired output voltage.
LSM-10A D3 Models
Single Output, Non-Isolated, 3.3VIN, 0.8-2.5VOUT
10 Amp DC/DC’s in SMT Packages
Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000
www.murata-ps.com
MDC_LSM-10A D3.B01 Page 6 of 13
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LSM-0.8/10-D3-C | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| LSM-1.5/10-D3 | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| LSM-1/10-D3 | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| LSM-1.8/10-D3-C | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| LSM-2.5/10-D3 | 1-OUTPUT 25 W DC-DC REG PWR SUPPLY MODULE |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LSM115J | 功能描述:DIODE SCHOTTKY 1A 15V DO214BA RoHS:否 類別:分離式半導(dǎo)體產(chǎn)品 >> 單二極管/整流器 系列:- 標(biāo)準(zhǔn)包裝:100 系列:- 二極管類型:標(biāo)準(zhǔn) 電壓 - (Vr)（最大）:50V 電流 - 平均整流 (Io):6A 電壓 - 在 If 時(shí)為正向 (Vf)（最大）:1.4V @ 6A 速度:快速恢復(fù) = 200mA（Io） 反向恢復(fù)時(shí)間(trr):300ns 電流 - 在 Vr 時(shí)反向漏電:15µA @ 50V 電容@ Vr, F:- 安裝類型:底座，接線柱安裝 封裝/外殼:DO-203AA，DO-4，接線柱 供應(yīng)商設(shè)備封裝:DO-203AA 包裝:散裝 其它名稱:*1N3879 |
| LSM115JE3/TR13 | 功能描述:DIODE SCHOTTKY 1A 15V DO214BA RoHS:是 類別:分離式半導(dǎo)體產(chǎn)品 >> 單二極管/整流器 系列:- 標(biāo)準(zhǔn)包裝:100 系列:- 二極管類型:標(biāo)準(zhǔn) 電壓 - (Vr)（最大）:50V 電流 - 平均整流 (Io):6A 電壓 - 在 If 時(shí)為正向 (Vf)（最大）:1.4V @ 6A 速度:快速恢復(fù) = 200mA（Io） 反向恢復(fù)時(shí)間(trr):300ns 電流 - 在 Vr 時(shí)反向漏電:15µA @ 50V 電容@ Vr, F:- 安裝類型:底座，接線柱安裝 封裝/外殼:DO-203AA，DO-4，接線柱 供應(yīng)商設(shè)備封裝:DO-203AA 包裝:散裝 其它名稱:*1N3879 |
| LSM115JTR7 | 制造商:Microsemi Corporation 功能描述: |
| LSM-11D | 制造商:EATON MOELLER 功能描述:BASIC UNIT METAL 1EARLY BR IP66 |
| LSM-11S | 制造商:Eaton 功能描述:Bulk 制造商:EATON MOELLER 功能描述:BASIC UNIT METAL 1NO/1NC IP66 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。