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参数资料
| 型号： | UQQ-24/4-Q12P9L1-C |
| 厂商： | CD TECHNOLOGIES INC |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 96 W DC-DC REG PWR SUPPLY MODULE |
| 封装： | ROHS COMPLIANT PACKAGE-9 |
| 文件页数： | 17/17页 |
| 文件大小： | 1988K |
| 代理商： | UQQ-24/4-Q12P9L1-C |
MDC_UQQ_A03 Page 9 of 7
UQQ Series
Wide Input Range Single Output DC/DC Converters
D C / D C C O N V E R T E R S
Technical enquiries email: sales@murata-ps.com, tel: + 508 339 3000
www.murata-ps.com
Input Reverse-Polarity Protection
If the input-voltage polarity is accidentally reversed, an internal diode will
become forward biased and likely draw excessive current from the power
source. If the source is not current limited or the circuit appropriately fused, it
could cause permanent damage to the converter.
Input Fusing
Certain applications and/or safety agencies may require the installation of
fuses at the inputs of power conversion components. Fuses should also be
used if the possibility of a sustained, non-current-limited, input-voltage polarity
reversal exists. For MPS UQQ Series DC/DC Converters, slow-blow fuses are
recommended with values no greater than twice the maximum input current.
Trimming Output Voltage
UQQ converters have a trim capability (pin 6) that enables users to adjust the
output voltage from +0% to –20% (refer to the trim equations). Adjustments
to the output voltage can be accomplished with a single fixed resistor as shown
in Figures 5 and 6. A single fixed resistor can increase or decrease the output
voltage depending on its connection. Resistors should be located close to
the converter and have TCR’s less than 00ppm/°C to minimize sensitivity to
changes in temperature. If the trim function is not used, leave the trim pin open.
Standard UQQ’s have a "positive trim" where a single resistor connected from
the Trim pin (pin 6) to the +Sense (pin 7) will increase the output voltage. A
resistor connected from the Trim Pin (pin 6) to the –Sense (pin 5) will decrease
the output voltage.
Trim adjustments greater than the specified +0%/–20% can have an adverse
affect on the converter’s performance and are not recommended. Excessive
voltage differences between VOUT and Sense, in conjunction with trim adjust-
ment of the output voltage, can cause the overvoltage protection circuitry to
activate (see Performance Specifications for overvoltage limits).
Temperature/power derating is based on maximum output current and voltage
at the converter’s output pins. Use of the trim and sense functions can cause
output voltages to increase, thereby increasing output power beyond the UQQ’s
specified rating, or cause output voltages to climb into the output overvoltage
region. Therefore:
(VOUT at pins) x (IOUT)
≤ rated output power
The Trim pin (pin 6) is a relatively high impedance node that can be susceptible
to noise pickup when connected to long conductors in noisy environments. In
such cases, a 0.22F capacitor to –Output can be added to reduce this long
lead effect.
UQQ Series Aluminum Heatsink
Please note – The UQQ series shares the same heatsink kits as the UVQ
series. Therefore, when ordering these heat sinks, use the model numbers
below which end with the ‘UVQ’ suffix. The UQQ series converter baseplate
can be attached either to an enclosure wall or a heatsink to remove heat from
internal power dissipation. The discussion below concerns only the heatsink
LOAD
RTRIM DOWN
+OUTPUT
–INPUT
+INPUT
ON/OFF
CONTROL
TRIM
+SENSE
–OUTPUT
–SENSE
4
5
1
3
6
8
7
2
Figure 5. Trim Connections To Increase Output Voltages Using Fixed Resistors
Figure 6. Trim Connections To Decrease Output Voltages Using Fixed Resistors
UP
VO – 3.3
RT (k ) =
–10.2
13.3(VO – 1.226)
3.3 – VO
RT
(k ) =
–10.2
16.31
DOWN
UP
VO – 5
RT (k ) =
–10.2
20.4(VO – 1.226)
5 – VO
RT
(k ) =
–10.2
25.01
DOWN
UP
VO – 12
RT (k ) =
–10.2
49.6(VO – 1.226)
12 – VO
RT
(k ) =
–10.2
60.45
DOWN
UP
VO – 15
RT (k ) =
–10.2
62.9(VO – 1.226)
15 – VO
RT
(k ) =
–10.2
76.56
DOWN
UQQ-3.3/25-Q12, UQQ-3.3/25-Q48
UQQ-5/17-Q12, UQQ-5/20-Q48
UQQ-12/8-Q12, UQQ-12/8-Q48
UQQ-15/7-Q12
UP
VO – 24
RT (k ) =
–10.2
101 × (VO – 1.226)
24 – VO
RT
(k ) =
–10.2
124.2
DOWN
UQQ-24/4-Q12
Trim Up
Trim Down
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相关代理商/技术参数 |
参数描述 |
|---|---|
| UQQ-3.3/25-Q12NB-C | 功能描述:DC/DC转换器 12Vin 3.3Vout 25A neg TH baseplate 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: |
| UQQ-3.3/25-Q12N-C | 功能描述:DC/DC转换器 12Vin 3.3Vout 25A neg polarity TH 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: |
| UQQ-3.3/25-Q12PB-C | 功能描述:DC/DC转换器 12Vin 3.3Vout 25A pos TH baseplate 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: |
| UQQ-3.3/25-Q12PB-C | 制造商:Murata Power Solutions 功能描述:DC/DC Converter |
| UQQ-3.3/25-Q12P-C | 功能描述:DC/DC转换器 12Vin 3.3Vout 25A pos polarity TH 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: |
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