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EC9BW SERIES
30 WATT 4:1 INPUT
DC-DC CONVERTERS
FEATURE
* 30W Isolated Output
* Efficiency to 91%
* 1’’ X 2’’ Six-Sided Shield Metal Case
* 4:1 INPUT RANGE
* Regulated Outputs
* Fixed Switching Frequency
* Input under-voltage Protection
* Over Current Protection
* Remote ON/OFF
* Continuous Short Circuit Protection
* Without Tantalum Capacitors inside
NOTE: 1. Nominal Input Voltage 24 or 48 VDC
OUTPUT CURRENT INPUT CURRENT MODEL
NUMBER INPUT
VOLTAGE OUTPUT
VOLTAGE MIN. MAX. NO LOAD FULL LOAD %
EFF. CAPACITIVE
LOAD MAX.
EC9BW-24S33 9-36 VDC 3.3 VDC 0 mA 7500 mA 100 mA 1200 mA 88.5 7500μF
EC9BW-24S05 9-36 VDC 5 VDC 0 mA 6000 mA 110 mA 1421 mA 89.5 6000μF
EC9BW-24S12 9-36 VDC 12 VDC 0 mA 2500 mA 35 mA 1405 mA 90.5 2500μF
EC9BW-24S15 9-36 VDC 15 VDC 0 mA 2000 mA 35 mA 1405 mA 91 2000μF
EC9BW-24D12 9-36 VDC ±12 VDC 0 mA ±1250mA 35 mA 1437 mA 90 1250μF
EC9BW-24D15 9-36 VDC ±15 VDC 0 mA ±1000mA 35 mA 1437 mA 90 1000μF
EC9BW-48S33 18-75 VDC 3.3 VDC 0 mA 7500 mA 55 mA 600 mA 88 7500μF
EC9BW-48S05 18-75 VDC 5 VDC 0 mA 6000 mA 55 mA 711 mA 90 6000μF
EC9BW-48S12 18-75 VDC 12 VDC 0 mA 2500 mA 25 mA 695 mA 90 2500μF
EC9BW-48S15 18-75 VDC 15 VDC 0 mA 2000 mA 20 mA 688 mA 90.5 2000μF
EC9BW-48D12 18-75 VDC ±12 VDC 0 mA ±1250mA 25 mA 711 mA 90.5 1250μF
EC9BW-48D15 18-75 VDC ±15 VDC 0 mA ±1000mA 20 mA 711 mA 90 1000μF
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SPECIFICATIONS
All Specifications Typical At Nominal Line, Full Load, and 25℃ Unless Otherwise Noted
INPUT SPECIFICATIONS: GENERAL SPECIFICATIONS:
Input Voltage Range ....……………...............………. 24V ................ 9 – 36V Efficiency ...........................................………..………............ See Table
48V ……….... 18 – 75V Isolation Voltage .................................……..………......... 1500 VDC min.
Input Surge Voltage (100ms max.)………………..…. .24V............. 50Vdc max Isolation Resistance .....................…….………….……… 109 Ohms min.
48V………100Vdc max Isolation Capacitance…………………..………………………1000pF Typ
Under voltage lockout …………….. 24Vin power up ….…...….……. 8.8V typ. Switching Frequency ............................……...................... 430KHz typ.
24Vin power down ……..……. 8.0V typ. EMI/RFI……….………. Conductive EMI Mee EN55022 Class A (Note6)
48Vin power up ………...…...….. 17V typ. Operating Ambient Temperature Range...…..…...…….... -40℃ to +75℃
48Vin power down …………....... 16V typ. Derating, Above 65℃ ……………..…. Linearly to Zero Power at +105℃
Input Filter ………………………………..……….……………. PI Type Case Temperature (note 5) ………………………………………….. 105℃
Positive Logic Remote on/off Control: ( see note 3 & 4 ) Cooling ………………………………………………… Natural Convection
OUTPUT SPECIFICATIONS: Storage Temperature Range ...…............……....…....... -55℃ to +125℃
Voltage Accuracy ………………....……………….......…………… ±1% max. Thermal Shutdown, Case Temp. .………….............……. 110℃ Typ.
Voltage Balance(Dual) …….………………… ……………….…. ±1% max. Humidity....................................................95% RH max. Non condensing
Transient Response: 75% ~ 100% Step Load Change. MTBF……….MIL-STD-217F..………..……..……………………T.B.D. hrs
Error Band …… ±5% Vout nominal, Recovery Time ……….. < 250us Dimensions............................. 2 x 1 x 0.4 inches (50.8 x 25.4 x 10.2 mm)
Ripple & Noise, 20MHz BW (Measured with 0.1uF MLCC) Case Material ……… Black Coated Copper with Non-Conductive Base
Vo=3.3 & 5V ……75mV p-p max. Weight ………………………………………………………………….. 35g
Vo=12V & 15V & ±12V & ±15V …. 100mV p-p max NOTE :
Temperature Coefficient ....................….………...…..……….. ±0.02%/C max. 1. Measured From High Line to Low Line
Line Regulation(Note1), … single ……………………...…………. ±0.2% max. 2. Measured From Full Load to min. Load
Dual..……….……........................…. ±0.2% max 3. Logic Compatibility …. CMOS or Open Collector TTL, ref. to -Vin
Load Regulation(Note2), … single ……………………...…………. ±0.2% max. Module ON ……………… >3.5Vdc to 75Vdc or Open Circuit
Dual..……….……........................…. ±0.5% max Module OFF ………………. <1.2Vdc
Cross Regulation(Dual output) Load cross variation 10%/100%…….±5% max 4. Suffix "N" to the Model Number with Negative Logic Remote ON/OFF
Over Voltage Protection ……………………….………… Zener or TVS Clamp Module ON ………………... <1.2Vdc,
Current Limit ……………………………………. 110% - 160% Nominal Output Module OFF ……………….. >3.5Vdc to 75Vdc or Open Circuit
Output Short Circuit Protection .............................. Continuous (Hiccup Mode) 5. Maximum case temperature under any operating condition should
External Trim Adj. Range ( single output models only ) …..…………….. ±10% Not be exceeded 105℃.
Start up time……………………………………………………………….10ms typ 6. Meet EN55022 Class A with external capacitor.(see application note )
SIZE B Dimensions:
Typical Derating curve for Natural Convection
105
-40 65
0%
20%
40%
60%
80%
100%
120%
-40 -20 0 20 40 60 80 100 120
Ambient Temperature(oC)
LOAD(%)
Natural
Convection
