DC-DC CONVERTERS 30 W High Efficiency DC-DC Converters 1
2 YEAR WARRANTY
EXB30 Series
Dual positive output
•Two independent positive outputs
•Output voltage tracking
•High efficiency
•Approved to EN60950, UL1950, CSA C22.2 No. 950
•Operating ambient temperature of -40 °C to +70 °C
(natural convection)
•Up to 100% load imbalance
•Separate trim on each output
•No minimum load
•Complies with ETS 300 019-1-3/2-3
•Fully compliant with ETS 300 386-1
•Available RoHS compliant
The EXB30 Dual series are isolated dual positive-output dc-dc converters. The products are designed
using a high-efficiency synchronous rectification topology. They feature two independent fully regulated
outputs, which are individually trimmable. The EXB30 Dual employs Dynamic Current Allocation such
that maximum current can be drawn from either output with a total output current capability of 6 A. No
minimum load is required for either output. In addition, these products incorporate a tracking feature
such that both outputs rise together with their output differential never exceeding 0.7 Volts during start-
up. A remote ON/OFF and latching overvoltage protection for both outputs are included as standard.
These latches are enabled by default, but can be disabled by the user.
All specifications are typical at nominal input, full load at 25 °C unless otherwise stated
EMC CHARACTERISTICS
ETS 300 386-1 table 5
Conducted emissions EN55022 with external filter Level A
EN55022 with external filter Level B
Radiated emissions EN55022 (See App. Note 109) Level B
Immunity:
ESD air EN61000-4-2 8 kV (NP), 15 kV (RP)
ESD contact EN61000-4-2 6 kV (NP), 8 kV (RP)
EFT DC power EN61000-4-4 2 kV (NP), 4 kV (LFS)
EFT signal EN61000-4-4 1 kV (NP), 2 kV (LFS)
Radiated field enclosure EN61000-4-3 10 V/m (NP)
Surges indoor signal EN61000-4-5 500 V (RP)
Conducted (DC power) EN61000-4-6 10 V (NP)
Conducted (signal) EN61000-4-6 10 V (NP)
Input transients ETS 300 132-2, ETR 283
GENERAL SPECIFICATIONS
Efficiency See table
Basic insulation Input/output 1500 Vdc
Input fuse 24 V (See Note 4) 3.5 A slow blow
Input fuse 48 V 2.0 A slow blow
Switching frequency Fixed 280 kHz
Approvals and EN60950
standards Bi-national UL1950
(See Notes 4, 6) CSA C22.2 No. 950
Weight 52 g (1.84 oz)
MTBF (See Application MIL-HDBK-217 6,283,000 hours
Note 109)
ENVIRONMENTAL SPECIFICATIONS
Thermal performance Operating ambient -40 °C to +70 °C,
temperature See curves
Non-operating -55 °C to +105 °C
ETS 300 019-2-3 Classes T3.1 to T3.5
Air temperature Low: IEC 68-2-1 -40 °C
High: IEC 68-2-2 +70 °C
Change: IEC 68-2-14 -40 °C to +70 °C
Relative humidity IEC 68-2-56 10% to 100% RH
IEC 68-2-30 condensation
OUTPUT SPECIFICATIONS
Voltage adjustability Both outputs ±11% min.
Voltage accuracy Both outputs ±1.5% max.
Line regulation Low line to high line Vout1 ±0.4%
Low line to high line Vout2 ±0.4%
Load regulation Full load to no load ±0.4%
Minimum load Both outputs 0%
Ripple and noise 150 mV pk-pk max.
20 MHz bandwidth 30 mV rms max.
Temperature coefficient ±0.02%/°C
Transient response 50% to 75% and back 150 mV
peak dev. settling time to 1.0%, no external cap. 400 µs
Short circuit protection Both outputs Continuous
Isc 8 Arms (See Note 3) automatic recovery
Tracking Max. differential 0.7 V during
start-up and in operation
INPUT SPECIFICATIONS
Input voltage range 24 Vin nominal 18-36 Vdc
48 Vin nominal 36-75 Vdc
Input current No load 150 mA max.
Remote OFF 4 mA max.
UVLO turn ON voltage All inputs (See Note 2) 94% typ.
UVLO turn OFF voltage All inputs (See Note 2) 86% typ.
Start-up time Nominal line 20 ms max.
Active high remote ON/OFF
Logic compatibility Open Collector ref. to -input
ON Open circuit voltage 4.5 Vdc
OFF 0.6 Vdc
SPECIFICATIONS
File Name: exb30d.pdf Rev (02): 05 Dec 2005