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参数资料
| 型号： | ULS-15/2-D48N-C |
| 厂商： | Murata Power Solutions Inc |
| 文件页数： | 27/30页 |
| 文件大小： | 0K |
| 描述： | 36-75VIN 15VOUT 30W NEG LOGIC |
| 产品培训模块： | ULS 30W Series |
| 标准包装： | 128 |
| 系列： | ULS |
| 类型： | 隔离 |
| 输出数： | 1 |
| 电压 - 输入（最小）： | 36V |
| 电压 - 输入（最大）： | 75V |
| Voltage - Output 1： | 15V |
| 电流 - 输出（最大）： | 2A |
| 电源（瓦） - 制造商系列： | 30W |
| 电压 - 隔离： | 2.25kV（2250V） |
| 特点： | 具有远程开/关功能和 UVLO |
| 安装类型： | 通孔 |
| 封装/外壳： | 8-DIP 模块，1/16 砖 |
| 尺寸/尺寸： | 1.30" L x 0.90" W x 0.40" H（33.0mm x 22.9mm x 10.2mm） |
| 包装： | 散装 |
| 工作温度： | -40°C ~ 85°C |
| 效率： | 89% |
| 电源（瓦特）- 最大： | 30W |
| 其它名称： | 811-2259 |
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ULS 30-Watt Series
Sixteenth-brick DOSA-Compatible,
Isolated DC/DC Converters
Remote Sense (ULS-3.3/8-D48 and ULS-5/6-D48 models only)
Note: The Sense and V OUT lines are internally connected through low-value
resistors. Nevertheless, if the sense function is not used for remote regula-
tion the user should connect the +Sense to +V OUT and –Sense to –V OUT at
Trim Equations
Trim Down
R T DOWN (k ? ) =
? (
Where Δ% ??? ??????????????????? × 100
the DC/DC converter pins.ULS series converters employ a sense feature to
provide point of use regulation, thereby overcoming moderate IR drops in PCB
conductors or cabling. The remote sense lines carry very little current and
therefore require minimal cross-sectional-area conductors. The sense lines,
which are capacitively coupled to their respective output lines, are used by
the feedback control-loop to regulate the output. As such, they are not low
impedance points and must be treated with care in layouts and cabling. Sense
511
– 10.22
Δ%
V OUT – V NOM
V NOM
Trim Up
) ?
RT UP (k ? ) =
? ( ) ?
Where Δ% ??? ??????????????????? × 100
lines on a PCB should be run adjacent to dc signals,preferably ground.
[V OUT (+)-V OUT (–)] – [Sense(+)-Sense(–)] ? 10%V OUT
In cables and discrete wiring applications, twisted pair or other techniques
should be used. Output over-voltage protection is monitored at the output volt-
5.11 × V OUT × (100 + Δ%)
1.225 × Δ%
V OUT – V NOM
V NOM
–
511
Δ%
– 10.22
age pin, not the Sense pin. Therefore, excessive voltage differences between
V OUT and Sense in conjunction with trim adjustment of the output voltage can
cause the over-voltage protection circuitry to activate (see Performance Speci-
?cations for over-voltage limits). Power derating is based on maximum output
current and voltage at the converter’s output pins. Use of trim and sense func-
tions can cause output voltages to increase, thereby increasing output power
beyond the converter’s speci?ed rating, or cause output voltages to climb into
the output over-voltage region. Therefore, the designer must ensure:
(V OUT at pins) x (I OUT ) ? rated output power
Contact and PCB resistance
losses due to IR drops
Note: “Δ%” is always a positive value.
“V NOM ” is the nominal, rated output voltage.
“V OUT ” is the desired, changed output voltage.
+VIN
+VOUT
+SENSE
I OUT
Sense Current
ON/OFF
CONTROL
–VIN
TRIM
–SENSE
–VOUT
Sense Return
I OUT Return
LOAD
Contact and PCB resistance
losses due to IR drops
Figure 7. Remote Sense Circuit Con?guration
www.murata-ps.com/support
MDC_ULS-30W_C06 Page 27 of 30
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