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参数资料
| 型号： | LQN-3.3/45-D12B |
| 厂商： | CD TECHNOLOGIES INC |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 150 W DC-DC REG PWR SUPPLY MODULE |
| 文件页数： | 7/9页 |
| 文件大小： | 609K |
| 代理商： | LQN-3.3/45-D12B |
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
7
To prevent high frequency voltage differences between VOUT and Sense, we
recommend installation of a 1000pF capacitor close to the converter.
The sense function is capable of compensating for voltage drops between
the +Output and +Sense pins that do not exceed 10% of VOUT.
[VOUT(+) – Common] – [Sense(+) – Common]
≤ 10%VOUT
Power derating (output current limiting) is based upon maximum output
current and voltage at the converter's output pins. Use of trim and sense
functions can cause the output voltage to increase, thereby increasing output
power beyond the converter's specied rating. Therefore:
(VOUT at pins) x (IOUT)
≤ rated output power
The internal 10.5
resistor between +Sense and +Output (see Figure 1)
serves to protect the sense function by limiting the output current owing
through the sense line if the main output is disconnected. It also prevents
output voltage runaway if the sense connection is disconnected.
Note: If devices have the +Sense pin (pin 10) installed (no part-number
sufx) and the sense function is not used for remote regulation, +Sense
(pin 10) must be tied to +Output (pin 7, 9) at the DC/DC converter pins.
Output overvoltage protection is monitored at the output voltage pin, not the
Sense pin. Therefore, excessive voltage differences between VOUT and Sense
in conjunction with trim adjustment of the output voltage can cause the
overvoltage protection circuitry to activate (see Performance Specications
for overvoltage limits). Power derating is based on maximum output current
and voltage at the converter's output pins.
Temperature/power derating is based on maximum output current and volt-
age at the converter's output pins.
The Trim pin (pin 2) is a relatively high impedance node that can be suscep-
tible to noise pickup when connected to long conductors in noisy environ-
ments. In such cases, a 0.22F capacitor to ground can be added to reduce
this long lead effect.
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