TWR-5/3000-12/500-D12A 查看數據表（PDF） - DATEL Data Acquisition products
零件编号
产品描述 (功能)
生产厂家
TWR-5/3000-12/500-D12A
DATEL Data Acquisition products
TWR-5/3000-12/500-D12A Datasheet PDF : 7 Pages
| |||
A Series
20W, TRIPLE OUTPUT DC/DC CONVERTERS
Input Fusing
Certain applications and/or safety agencies may require the installation of
fuses at the inputs of power conversion components. For DATEL A-Series
TWR 20 Watt DC/DC Converters, you should use slow-blow type fuses with
values no greater than 4A for "D12A" models and 2A for "D48A" models.
On/Off Control
The On/Off Control pin (pin 4) may be used for remote on/off operation. A
TTL logic high (+2 to +5 Volts, 250µA max.) applied to pin 4 disables the
converter. A TTL logic low (0 to +0.8 Volts, 70µA max.), or no connection,
enables the converter. Control voltages should be referenced to pin 2
(–Input). Applying a voltage to the Control pin when no input power is applied
to the converter can cause permanent damage to the converter.
Synchronization
In critical applications employing multiple switching DC/DC converters, it may
be desirable to intentionally synchronize the switching of selected converters
(so the system noise can be reduced with notch filtering) or to purposely
desynchronize the converters (to lessen the current-carrying requirements on
intermediate dc buses). For multiple A-Series Converters, an external clock
can be applied to pin 4 (Control) of each device. It should be a square wave
with a maximum 1µsec "high" duration and an amplitude between +2V and
+5V (see On/Off Control) referenced to pin 2 (–Input). The frequency of the
synchronizing clock should be higher than that of any individual converter.
Therefore, it should be 185kHz ±5kHz.
Typical Performance Curves (TA = +25°C)
The performance curves below were derived from actual test data for a single model number (TWR-5/3000-12/250-D48).
Since all devices in this series have the same circuit architecture, the performance curves are representative for all devices.
EFFICIENCY VS. INPUT VOLTAGE AND OUTPUT LOAD
Efficiency vs. Input Voltage
(+5V output loaded @ 2.75A, ±12V outputs loaded @ ±250mA )
84.0
83.5
83.0
82.5
82.0
81.5
81.0
80.5
80.0
18 24
36
48
60
72
Input Voltage (Volts)
Efficiency vs. +5V Output Loading
(±12V outputs loaded @ ±250mA )
88
VIN = 18V
86
84
82
VIN = 48V
80
78
76
VIN = 72V
74
72
0.25
0.75
1.25
1.75
2.25
2.75
+5V Output Current (Amps)
Efficiency vs. ±12V Output Loading
(+5V output loaded @ 0.55A)
89
VIN = 18V
86
83
VIN = 48V
80
77
74
71
VIN = 72V
68
65
25 50
100
150
200
250
±12V Output Currents (±mA)
4
Downloaded from DatasheetLib.com - datasheet search engine
Efficiency vs. ±12V Output Loading
(+5V output loaded @ 2.75A)
84
VIN = 18V
83
82
VIN = 48V
81
80
79
VIN = 72V
78
77
76
25 50
100
150
200
250
±12V Output Currents (±mA)
Share Link: