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PDF ALD12 Data sheet ( Hoja de datos )
| Número de pieza | ALD12 | |
| Descripción | (ALDxx) Single Output 16th Brick | |
| Fabricantes | Astec America | |
| Logotipo |  |
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Technical Reference Notes
ALD12/18/20/25 Series
(Single Output 16th Brick)
ALD12/18/20/25 Single Output 16th Brick: 60Watts
The ALD12/18/20/25 series is Astec’s latest 16th Brick industry standard offering. Operating from an input voltage range of 36V to
75V, the series provides 6 configured outputs from 1.2V all the way up to 5V. It delivers up to 25A max current for 1.8V and
lower at impressive levels of efficiency. The series comes with industry standard features such as Input UVLO; non-latching OCP,
OVP and OTP; Output Trim; Differential Remote Sense pins. With its wide operating temperature range of -40°C to 85°C
ambient, the converters are deployable into almost any environment.
www.DataSheet4U.com
Electrical Parameters
Input
Input Range
Input Surge
36-75 VDC
100V / 100ms
Special Features
• Industry Standard 16th Brick Footprint
• Low Ripple and Noise
• Output pre-bias startup
• Regulation to zero load
• High Capacitive Load Start-up
• Fixed Switching Frequency
• Industry standard features: Input UVLO;
Enable; non-latching OVP, OCP and OTP;
Output Trim, Differential Remote Sense
• Meets Basic Insulation
Control
Enable
TTL compatible
(Positive or Negative Logic Enable Options)
Output
Load Current
Line/Load Regulation
Ripple and Noise
Adjust Range
Transient Response
Remote Sense
Over Current
Protection
Over Voltage
Protection
Over Temperature
Protection
Up to 25A max (VO ≤ 1.8V)
< 1% VO
40mVP-P typical
±10% VO
3% Typical deviation
50% to 75% Load Change
80µs settling time (Typ)
+10%VO
120% max
130% max
110 °C
Environmental Specifications
• -40ºC to 85ºC Operating Temperature
• -40ºC to 125ºC Storage Temperature
• MTBF > 1 million hours
Safety
UL + cUL 60950, Recognized
EN60950 through TUV-PS
MODEL: ALD12/18/20/25 SERIES
AUGUST 17, 2005 – REVISION C
SHEET 1 OF 20
1 page  
Technical Reference Notes
ALD12/18/20/25 Series
(Single Output 16th Brick)
Electrical Specifications (continued)
SAFETY AGENCY / MATERIAL RATING / ISOLATION
Parameter
Device
Safety Approval
Material Flammability Rating
Parameter
Input to Output Capacitance
All
All
Device
All
UL/cUL 60950
TUV EN 60950
UL94V-0
Symbol
Min
-
Typical
1000
Max
-
Unit
pF
www.DataSheet4U.com Input to output Resistance
All
- 10 - Mohms
Input to Output Insulation Type
All
- Basic -
-
TO OSCILLOSCOPE
BATTERY
Ltest
12 uH
Cs 220 uF
ESR < 0.1 OHM
@ 20 ºC, 100 kHz
33 uF
ESR < 0.7 OHM
@ 20 ºC, 100 kHz
Vi(+)
Vi(-)
Measure input reflected-ripple current with a simulated source inductance (Ltest) of 12 uH.
Capacitor Cs offsets possible battery impedance. Measure current as shown above.
Figure 1. Input Reflected Ripple Current Measurement Setup.
Vo(+)
Vo(-)
COPPER STRIP
0.1 uF
10 uF SCOPE
RESISTIVE
LOAD
Use a 0.1µF @50V X7R ceramic capacitor (connected an inch away from the output
terminals of the UUT) and a 10µF @ 25V tantalum capacitor (2 inches away from the output
terminals of the UUT). Scope measurement should be made using a BNC socket, positioned 3
inches away from output terminals of the converter.
Figure 2. Peak to Peak Output Noise Measurement Setup.
MODEL: ALD12/18/20/25 SERIES
AUGUST 17, 2005 – REVISION C
SHEET 5 OF 20
5 Page 
Performance Curves
2.5V Version
Technical Reference Notes
ALD12/18/20/25 Series
(Single Output 16th Brick)
Efficiency vs. Output Current, TA=25°C
95%
90%
85%
www.DataSheet4U.com
80%
75%
70%
65%
60%
Vin = 36Vdc
Vin = 48Vdc
Vin = 75Vdc
55%
0
4 8 12 16
Output Current (Amps)
20
Figure 18. 2.5V Efficiency vs. output current at various
input line conditions, TA = 25°C.
Power Dissipation vs. Output Current, TA=25°C
10
Vin = 36 Vdc
8 Vin = 48 Vdc
Vin = 75 Vdc
6
4
2
0
0 5 10 15 20
Output Current (Amps)
Figure 19. 2.5V Power Dissipation vs. load current at
various input line conditions, TA = 25°C.
Figure 20. 2.5V Startup Characteristic at VIN = 36Vdc,
IO = Full Load, TA = 25°C, CO = 0.
Figure 21. 2.5V Output Ripple at VIN = 48Vdc, IO =
Full Load, TA = 25°C.
MODEL: ALD12/18/20/25 SERIES
AUGUST 17, 2005 – REVISION C
SHEET 11 OF 20
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet ALD12.PDF ] | |
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