DC/DC Converters
TDR 2WI Series
2 Watt
Input Specifications
Input current at no load (nominal input voltage)
12 Vin models: 35 mA typ.
24 Vin models: 20 mA typ.
48 Vin models: 10 mA typ.
Input current at full load (nominal input voltage)
Surge voltage (1 sec. max.)
12 Vin models: 215 mA typ.
24 Vin models: 110 mA typ.
48 Vin models: 55 mA typ.
12 Vin models: 25 V max.
24 Vin models: 50 V max.
48 Vin models: 100 V max.
Input filter
capacitor type (see EMC considerations page 3
for compliance to EN 55022 class A/B)
ESD (electrostatic discharge)
EN 61000-4-2, air 8 kV, contact 6 kV,
perf. criteria A
Radiated immunity
EN 61000-4-3 10 V/m, perf. criteriy A
Fast transient / Surge
EN 61000-4-4, 2 kV, perf. criteria A
EN 61000-4-5, 1 kV perf. criteria A
with external input capacitor e.g. Nippon
chemi-con KY 220 µF, 100 V, ESR 48 mOhm
Conducted immunity
EN 61000-4-6, 10 Vrms, perf. criteria A
Reflected ripple current
12 Vin models: 80 mAp-p typ.
(measured with input filter according class A)
24 Vin models: 40 mAp-p typ.
48 Vin models: 30 mAp-p typ.
Output Specifications
Voltage set accuracy
1 % max
Regulation
– Input variation Vin min. to Vin max.
0.2 % max.
– Load variation 0 – 100 %
– Load variation 10 – 90 %
– Load cross regulation 25/100 %
single output models: 1.0 % max.
dual output models: 1.0 % max. balanced load
single output models: 0.5 % max.
dual output models: 0.8 % max. balanced load
5.0 % max. (dual output models)
Minimum load
0 % of rated max. load
0.02 %/K
Temperature coefficient
Ripple and noise (20 MHz bandwidth)
30 mVp-p typ.
Start up time
(constant resistive load)
– Power On
– Remote On
5 ms typ.
5 ms typ.
Transient response setting time (25 % load step change)
Short circuit protection
250 µs typ.
indefinite, automatic recovery
Capacitive load
5 VDC models: 1680 µF max.
12 VDC models: 820 µF max.
15 VDC models: 680 µF max.
12 VDC models:
15 VDC models:
470 µF max.
330 µF max.
All specifications valid at nominal input voltage, full load and +25°C after warm-up time unless otherwise stated.
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