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参数资料
| 型号： | LQN-1/50-D12MH |
| 厂商： | CD TECHNOLOGIES INC |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 50.75 W DC-DC REG PWR SUPPLY MODULE |
| 文件页数： | 3/9页 |
| 文件大小： | 609K |
| 代理商： | LQN-1/50-D12MH |
LQN D12 Models
N O N - I S O L A T E D , 4 5 - 5 0 A Q U A R T E R B R I C K , D C / D C C O N V E R T E R S
3
Input
Input Voltage Range
10.2-13.8 Volts (12V nominal) [13]
Start-Up Threshold
9.7 Volts typical
Overvoltage Shutdown
14.3 Volts typical
Undervoltage Shutdown
9.5 Volts typical
Input Current:
Normal Operating Conditions
See Ordering Guide
Standby Mode (Off, Under Voltage)
TBD mA
Inrush transient
TBD A2sec
Output Short-Circuit Condition
350mA
Low Line Voltage (VIN = VMIN):
LQN-1/50-D12
5.63 Amps
LQN-1.8/50-D12
9.64 Amps
LQN-2.5/45-D12
11.26 Amps
LQN-3.3/45-D12
15.57 Amps
Input Reected Ripple Current [2]
40mAp-p
Input Filter Type
Capacitive, 88F
Overvoltage Protection
None
Reverse-Polarity Protection
See external fuse information
No-load Input Current
240mA
Remote On/Off Control [5]
Off = +2.5V to +VIN max.
On = open pin to +2V max.
Remote Control On/Off Current
1mA pulldown
Remote Sense Input Range
+10% of VOUT nominal
Output
Total Output Power (VOUT x IOUT must not exceed maximum power) [3]
LQN-1/50-D12
50.75 Watts
LQN-1.8/50-D12
91.35 Watts
LQN-2.5/45-D12
112.5 Watts
LQN-3.3/45-D12
150 Watts
Voltage Output Accuracy [11]
Initial
±1% of VNOMINAL
Temperature Coefcient
±0.02% of VOUT per °C
Extreme [12]
±3% of VNOMINAL
Minimum Loading [1]
No minimum load
Ripple/Noise (20 MHz bandwidth) [8]
See Ordering Guide
Line/Load Regulation [10]
See Ordering Guide
Efciency
See Ordering Guide
Maximum Capacitive Loading
10,000F (low ESR
≤0.004)
Vout Trim Range
±10% of VNOMINAL
Current Limit Inception (98% of VOUT)
1 & 1.8V models
82A (cold start), 60A (warmed up)
2.5 & 3.3V models
85A (cold start), 70A (warmed up)
Short Circuit Detection
See Note 6
Short Circuit Protection Method
Hiccup with autorecovery
See Technical Notes
Short Circuit Current
LQN-1/50-D12
TBD Amps
LQN-1.8/50-D12
TBD Amps
LQN-2.5/45-D12
TBD Amps
LQN-3.3/45-D12
22 Amps
Short Circuit Duration
Continuous, output shorted to ground
Overvoltage Protection
120% of VOUT
Method: comparator feedback
Dynamic Characteristics
Dynamic Load Response (50% - 75% - 50% load step to ±2% of VOUT nal value)
LQN-1/50-D12
70sec
LQN-1.8/50-D12
70sec
LQN-2.5/45-D12
50sec
LQN-3.3/45-D12
80sec
Start-Up Time
(On/Off or VIN on to VOUT regulated)
10msec for VOUT = nominal
Switching Frequency
690 kHz ±30kHz
Environmental
Calculated MTBF [4]
TBC Hours
Operating Temperature Range (Ambient) [9]
No derating, natural convection,
–40 to +TBD °C
With derating
See Derating Curves
Storage Temperature Range
–40 to +125 °C
Thermal Protection/Shutdown
+115°C (PC board)
Density Altitude
0 to 10,000 feet
Relative Humidity
0% to 90%, non-condensing
Physical
Outline Dimensions
See Mechanical Specications
Pin Material [11]
Round copper with tin-lead solder
(through-hole models)
plate over nickel underplate
Weight (no heatsink)
0.6 ounces (17 grams)
Flammability Rating
UL94V-0
Electromagnetic Interference
(conducted or radiated)
FCC Part 15, EN55022, Class A
Safety
UL/cUL 60950, CSA-C22.2 No.234
IEC/EN 60950
Performance/Functional Specications
Typical at TA = +25°C under nominal input line voltage, nominal output voltage,
natural convection, external caps and full-load conditions unless otherwise noted. [1]
1] All models are tested and specied with an external 33F tantalum input capacitor,
470F Poscap output cap paralled with a 100F ceramic output capacitor. These
capacitors are necessary to accommodate our test equipment and may not be
required to achieve specied performance in your applications. All models are stable
and regulate within spec under no-load conditions.
[2] Input Ripple Current is tested and specied over a 5-20MHz bandwidth. Input lter-
ing is CIN = 200F tantalum (100 || 100), CBUS = 1000F electrolytic, LBUS = 1H.
[3] Note that Maximum Power Derating curves indicate an average current at nominal
input voltage. At higher temperatures and/or lower airow, the DC/DC converter
will tolerate shorter full current outputs if the total RMS current over time does not
exceed the Derating curve.
[4] Mean Time Before Failure is calculated using the Telcordia (Belcore) SR-332 Method
1, Case 3, ground xed conditions, TPCBOARD = +25°C, full output load, natural air
convection.
[5] The On/Off Control (pin 4) may be driven with external logic or by applying appropri-
ate external voltages which are referenced to Common, pin 1. The On/Off Control
Input should use either an open collector/open drain transistor or logic gate which
does not exceed +VIN.
The On/Off Control may be supplied with positive logic (LO = off, HI = on) under
special quantity order.
[6] Short circuit shutdown begins when the output voltage degrades approximately 2%
from the selected setting.
[7] The outputs are not intended to sink appreciable reverse current. If the outputs are
forced to sink excessive current, damage may result.
[8] Output noise may be further reduced by adding an external lter. See I/O Filtering
and Noise Reduction.
[9] All models are fully operational and meet published specications, including “cold
start” at –40°C.
[10] Regulation specications describe the deviation as the line input voltage or output
load current is varied from a nominal midpoint value to either extreme.
[11] Alternate pin length and/or other output voltages available under special quantity order.
[12] Extreme accuracy refers to all combinations of trim adjustment, temperature, airow
and load current.
[13] See Performance Specications note 5.
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