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bdeytnae
Key Features
• Efficiency up to 87% • Low output noise • Six-sided shielding • Output synchronous rectification • Input-to-output isolation • Soft start • External synchronization • Short circuit protection • Thermal protection • Industry standard pinout
Q25
25-30W DC/DC Converter
2”×1”×0.45”
Low Noise, 4 to 1 Input Range, Single & Dual Models
1 2
bdeytnae
9 8
3 Q25S12/48 7
4 MADE IN USA 6
5
Beta Dyne is protected under various patents, including but not limited to U.S. Patent numbers: 5,777,519; 6,188,276; 6,262,901; 6,452,818; 6,473,3171.
Functional Description
The Q25 series is a 25-30W low noise isolated converter, consisting of 14 standard single & dual output models from 3.3VDC to 15 VDC and 4:1 input voltage range from 9V to 72V. Output synchronous rectification followed by a very low dropout linear regulator made possible to achieve up to 87% efficiency and less than 5mV output noise with external capacitors. Standard features include input undervoltage protection , external synchronization and thermal protection. The converter is packaged in a 1 x 2 x .45’’ metal case with six-sided shielding.
BETA DYNE INC • WWW.BETA-DYNE.COM
Typical Block Diagram
Q25 DC/DC CONVERTER • Q25_DS_RevA.PDF • PAGE 1 OF 9 http://www.Datasheet4U.com/
Electrical Specifications
INPUT SPECIFICATIONS PARAMETER
Input Voltage Range Input Startup Voltage 24 VIN Input Startup Voltage 48 VIN Overvoltage Shutdown 24 VIN Overvoltage Shutdown 48 VIN Input Filter No Load Input Current Full Load Input Current Input Surge Current (20µS Spike) Short Circuit Current Limit Off State Current Remote ON/OFF Control
Supply ON Supply OFF Logic Input Reference Logic Compatability
Unless otherwise specified, all parameters are given under typical ambient temperature of +25°C with an airflow rate = 400LFM. With the given power derating, the operating range is -40°C to +125°C. Specifications subject to change without notice.
CONDITION / NOTE See model selection guide
LC See model selection guide See model selection guide 120% Of I @ Full Load
in
Pin 1 Open (Open circuit voltage: 10V Max.)
TTL Open Collector or CMOS Open Drain
MIN TYP MAX UNIT Vdc
8 9 Vdc 14 17 Vdc 37 Vdc 73 Vdc
mA A 10 A
150 µA
0 0.6 Vdc
OUTPUT SPECIFICATIONS PARAMETER
Voltage Output Voltage Accuracy Output Current Output Voltage Adjustment Ripple & Noise Line Regulation Load Regulation Temperature Coefficient @ FL Transient Response Time Short Circuit Protection Turn On Delay with Soft Start Output Overvoltage Protection GENERAL SPECIFICATIONS
PARAMETER Efficiency (at full power) Isolation Voltage (1 min.), Input to Output Isolation Resistance Isolation Capacitance Switching Frequency (FC)
c
External Sync Frequency (Fe)
CONDITION / NOTE See model selection guide
See model selection guide See Figure 15 For further reduction see Figure 1 & Figure 4 Minimum VIN to maximum VIN NL to FL
50% FL to FL to 50% FL, See Figure 11 & 13
By input current limiting
See Figure 12 & 14
None
(See App. Note
CONDITION / NOTE See model selection guide All models
See figure 9
MIN TYP MAX UNIT
Vdc
1%
A
±5 ±10
%
40 mV
±.1 %
±.1 %
.01 .02 %/°C
100 µS
MIN TYP MAX UNIT
%
1500
Vdc
109 W
300 pF
200 kHz
210 kHz
BETA DYNE INC • WWW.BETA-DYNE.COM
Q25 DC/DC CONVERTER • Q25_DS_RevA.PDF • PAGE 2 OF 9 http://www.Datasheet4U.com/
ENVIRONMENTAL SPECIFICATIONS
PARAMETER Operating Temperature Range (Ambient) Storage Temperature Range Maximum Operating Case Temperature1 MTBF Shielding Connection Shielding Connection
CONDITION / NOTE Industrial, See Note 2
per MIL-HNBK-217F (Ground benign, +25°C) - Vin for 24 Vin + Vin for 48 Vin
MIN TYP MAX -40 +71 -55 +125
110 1.1×106
UNIT °C °C °C
hours
Model Selection Guide
MODEL NUMBER
Q25S3.3/24 Q25S5/24 Q25S12/24 Q25S15/24 Q25S3.3/48 Q25S5/48 Q25S12/48 Q25S15/48 Q25D5/24 Q25D12/24 Q25D15/24 Q25D5/48 Q25D12/48 Q25D15/48
INPUT
Voltage (Vdc)
Current (mA)
Nominal Range No Load Full Load
24 9-36 52 1273
24 9-36 73 1240
24 9-36 92 1250
24 9-36 117 1251
48 18-72 33
627
48 18-72 32
607
48 18-72 44
605
48 18-72 52
600
24 9-36 25 1350
24 9-36 47 1276
24 9-36 50 1226
48 18-72 16
660
48 18-72 97
628
48 18-72 41
620
Voltage (Vdc)
OUTPUT Current (mA)
Efficiency Full Load (%)
3.3 7580 5 5000 12 2080 15 1660 3.3 7580 5 5000 12 2000 15 1660 5 2500 12 1040 15 830 5 2500 12 1040 15 830
82 84 84 84 83 85 86 87 77 82 85 78 84 84
1 When converter enters thermal protection on mode, its duty cycle is reduced momentarily and will resume after its internal temperature
(pwm) drops down a few degrees (ºC).The converter’s output behaves similar to hiccup short circuit mode. 2 Contact factory for -55° to +85°C operating temperature range. 3 The maximum input current at any given input range measured at minimum input voltage is given as 1.6*INOMINAL. Nominal input current is the typical value measured at the input of the converter under full-load room temperature and nominal input voltage ( 24 and 48VIN). 4 Adequ.