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参数资料
| 型号： | PVX012A0X43-SRZ |
| 厂商： | LINEAGE POWER LLC |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| 封装： | ROHS COMPLIANT PACKAGE-17/8 |
| 文件页数： | 5/23页 |
| 文件大小： | 1215K |
| 代理商： | PVX012A0X43-SRZ |
Data Sheet
May 13, 2011
12A Analog Pico DLynxTM: Non-isolated DC-DC Power Modules
3 – 14.4Vdc input; 0.6Vdc to 5.5Vdc output; 12A output current
LINEAGE POWER
13
Feature Descriptions
Remote On/Off
The 12A Analog Pico DLynx
TM power modules feature
an On/Off pin for remote On/Off operation. Two
On/Off logic options are available. In the Positive
Logic On/Off option, (device code suffix “4” – see
Ordering Information), the module turns ON during a
logic High on the On/Off pin and turns OFF during a
logic Low. With the Negative Logic On/Off option, (no
device code suffix, see Ordering Information), the
module turns OFF during logic High and ON during
logic Low. The On/Off signal should be always
referenced to ground. For either On/Off logic option,
leaving the On/Off pin disconnected will turn the
module ON when input voltage is present.
For positive logic modules, the circuit configuration for
using the On/Off pin is shown in Figure 39. When the
external transistor Q1 is in the OFF state, the internal
PWM Enable signal is pulled high through an internal
resistor and the external pullup resistor and the
module is ON. When transistor Q1 is turned ON, the
On/Off pin is pulled low and the module is OFF. A
suggested value for Rpullup is TBD
TBA
Figure 39. Circuit configuration for using positive
On/Off logic.
For negative logic On/Off modules, the circuit
configuration is shown in Fig. 40. The On/Off pin
should be pulled high with an external pull-up resistor
(suggested value for the 3V to 14.4V input range is
20Kohms). When transistor Q1 is in the OFF state, the
On/Off pin is pulled high, internal transistor Q4 is
turned ON and the module is OFF. To turn the module
ON, Q1 is turned ON pulling the On/Off pin low, turning
transistor Q4 OFF resulting in the PWM Enable pin
going high and the module turning ON.
Figure 40. Circuit configuration for using negative
On/Off logic.
Monotonic Start-up and Shutdown
The module has monotonic start-up and shutdown
behavior for any combination of rated input voltage,
output current and operating temperature range.
Startup into Pre-biased Output
The modules can start into a prebiased output as long
as the prebias voltage is 0.5V less than the set output
voltage.
Output Voltage Programming
The output voltage of the module is programmable to
any voltage from 0.6dc to 5.5Vdc by connecting a
resistor between the Trim and GND pins of the
module. Certain restrictions apply on the output
voltage set point depending on the input voltage.
These are shown in the Output Voltage vs. Input
Voltage Set Point Area plot in Fig. 41. The Upper Limit
curve shows that for output voltages lower than 1V, the
input voltage must be lower than the maximum of
14.4V. The Lower Limit curve shows that for output
voltages higher than 0.6V, the input voltage needs to
be larger than the minimum of 3V.
Figure 41. Output Voltage vs. Input Voltage Set
Point Area plot showing limits where the output
voltage can be set for different input voltages.
VO(+)
TRIM
Rtrim
LOAD
VIN(+)
ON/OFF
VS+
GND
Figure 42. Circuit configuration for programming
output voltage using an external resistor.
PVX012 NEGATIVE LOGIC FIGURE
22K
Q4
Rpullup
I
ON/OFF
GND
VIN+
ON/OFF
22K
PWM Enable
+
_
ON/OFF
V
CSS
Q1
MODULE
0
2
4
6
8
10
12
14
16
0.51
1.52
2.5
3
3.54
4.55
5.56
In
p
u
tV
o
lt
ag
e(
v)
Output Voltage (V)
Lower
Upper
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