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VRA_D-20W & VRB_D-20W Series
20W, WIDE INPUT, ISOLATED & REGULATED SINGLE&DUAL OUTPUT DC-DC CONVERTER
multi-country patent protection RoHS FEATURES
Efficiency up to 87% Wide (2:1) Input Range 1.5KVDC Input/Output Isolation Over Voltage protection Output Short Circuit Protection Operating Temperature: -40C to +71C Internal SMD construction Metal Shielding Package Industry Standard Pin out MTBF>1,000,000 hours RoHS Compliance
PRODUCT PROGRAM
Input Part Number VRA1205D-20W VRA1212D-20W VRA1215D-20W VRA1224D-20W * VRB1203D-20W VRB1205D-20W VRB1212D-20W VRB1215D-20W VRB1224D-20W VRA2405D-20W 12 9-18 Voltage (VDC) Nominal Range Output Voltage (VDC) 5 12 15 24 3.3 5 12 15 24 5 12 15 24 24 18-36 3.3 5 12 15 24 5 12 15 24 48 36-75 3.3 5 12 15 24 Current (mA) 2000 833 666 416 5400 4000 1666 1333 833 2000 833 666 416 5400 4000 1666 1333 833 2000 833 666 416 5400 4000 1666 1333 833 Efficiency capacitance (%, Typ) (max,UF 80 82 82 83 86 79 81 82 83 81 86 86 86 86 81 83 85 85 81 86 86 86 87 83 84 84 86 3400 680 450 220 13000 6800 2200 755 500 3400 680 450 220 13000 6800 2200 755 500 3400 680 450 220 13000 6800 2200 755 500
Application
The VRA_D-20W & VRB_D-20W series offer 20W of output, the VRA_D-20W & VRB_D-20W series with 2:1 wide input voltage of 9-18,18-36 and 36-75VDC and features 1500VDC isolation, short-circuit and over current protection, as well as six sided shielding. All models are particularly suited to tele-communications, industrial, test equipments power.
VRA2412D-20W VRA2415D-20W VRA2424D-20W * VRB2403D-20W VRB2405D-20W VRB2412D-20W VRB2415D-20W VRB2424D-20W VRA4805D-20W VRA4812D-20W VRA4815D-20W VRA4824D-20W *
MODEL SELECTION VRB1203D-20W
Rated Power Package Style Output Voltage Input Voltage Product Series
VRB4803D-20W VRB4805D-20W VRB4812D-20W VRB4815D-20W VRB4824D-20W
*Designing.
INPUT SPECIFICATIONS
Item Test conditions 12Vinput models MORNSUN Science& Technology co.,Ltd.
Address: 2th floor 6th building, Huangzhou Industrial District, Guangzhou, China
Min 8.6 17.5 34
Typ 8.8 17.8 35 L-C 20
Max 9 18 36
Units
Start voltage
24Vinput models 48Vinput models
VDC
Tel: 86-20-38601850 Fax:86-20-38601272 Http://www.mornsun-power.com
Input filter Start up time Method of Remote (Reference point: GND) on off
MS
3.5-40VDC or open circuit GND or Low Voltage(<1.2V)
VRB_D-20WVRA_D-20W A/3-2008 Page 1 of 2
MORNSUN reserves the copyright
Specifications subject to change without notice
OUTPUT SPECIFICATIONS
Item Output voltage accuracy Load regulation Line regulation Cross regulation Ripple and noise Transient recovery time Transient peak deviation Over load protection* Output Short Circuit 3.3V 5V Over voltage protection 12V 15V 24 Temperature drift (Vout) Trim Tested under 20MHz brand 25%load change Input voltage range 120 3.63 5.5 13.2 16.5 26.4 0.02 10%Vo 50 75 200 2 130 Test conditions Refer to recommended circuit From 10% to 100% load Input voltage from low to high Min Typ 1 0.5 0.2 Max 3 1 0.5 5 150 300 5 150 4.29 6.5 15.6 19.5 31.2 %/ VDC VDC mV us % % % Units
OUTPUT VOLTAGE TRIM
+V0
Trim
Trim
+Vo
0V Trim up/d own
0V Trim up
Trim Trim down
RECOMMENDED CIRCUIT
Vi n
L
Cin
Vout
Hiccup, automatics recovery
GND
L
DC
DC
Cout
0V For single output Vout
Cout Cin
Vin
-0V
DC
GN D
DC
Cout
-Vo
For dual output
Fig.1 In order to abtain better performance for the DC/DC models. it's recommended that use input and output filters as Fig.1 shown..
COMMON SPECIFICATIONS
Item Operating Temperature Storage Temperature Storage Humidity Isolation voltage Isolation resistance Isolation Capacitance Switching frequency MTBF Case Material Weight 100KHz / 1V Nominal, full load Test for 1 minute and 1 mA max Test conditions Min -40 -55 5 1500 500 1000 300 100 Aluminous alloy 39 G Typ Max 71 105 95 VDC M pF KHz K hours Units
DERATING & EFFICIENCY CURVE
Temperature derating curve
Output Power(%)
Operating Temp( o C)
Note: 1. All specifications are measured at TA=25C, humidity<75%, nominal input voltage and rated output load unless otherwise specified. 2. The CTRL control pin voltage is referenced to GND. 3. Typical Eff value at nominal input voltage and full load. 4. Capacitor MAX load tested at nominal input voltage and constant resistive load. 5. Refer to the diagram of Output Voltage trim up/down for trim applications. 6. The products cannot be used in parallel and in plug and play.
Curve of Efficiency VS output load VRA2412D-20W
EFF % 100 90 80 70 60 50 40 30 20 10 0
EfficiencyVS Output load
OUTLINE DIMENSIONS & FOOTPRINT DETAILS
F irst Angle Proj ectio n
50.80 (2.000) 2.54 (0.100) 45.72 ( 1.800)
RE CO MM E N DE D FO OT PR I N T To p v iew ,g r id :2 . 5 4m m (0 .1 in ch ) , d ia me te r :1 . 50 m m(0 .0 5 9in ch ) 10.16 10.16 10.16 ( 0.400) (0.400) (0.400)
0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
Out put %Io
7 1 (B ottom View ) 2 3
2.00 (0.080)
3
40.60 (1.600)
4 5 6 7
6 5 4
15.24 ( 0.600)
10.1 6 (0.400)
2 1
Curve of Efficiency VS input Voltage VRA2412D-20W
EFF %
Efficiency VS Input voltage
35.00 (1.380)
N o te: U n it :m m (i n ch ) P in se ct io n : 1 .0 0 m m( 0. 0 39 in ch ) P in se ct io n t o l er a nce s :+0 .05 m m( +0 . 0 02 in c h) G e ne r al to le ra n c es: + 0 . 2 5mm (+ 0.0 1 0 in ch )
F OO T PRIN T D ETAIL S S ing l e P in D ua l 1 Vin V in 2 GN D G ND 3 C t rl C tr l 4 Trim Tr im - Vo 0V 5 Com 6 + Vo 7 No pin + Vo
94 92 91 89 87 85 84 82 80
18 20 22 24 26 28 30 32 34 36 I npu t vol ta geV
7.80 (0.300)
MORNSUN reserves the copyright
10.50 ( 0.410) 10.00 (0.390)
Specifications subject to change without notice
( 4.10 0.161)
5.08 (0.200)
VRB_D-20WVRA_D-20W
A/3-2008
Page 1 of 2

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