DC/DC Converters
THN 20WI Series 20 Watt
Input Specifications
Input current at no load (at nominal input voltage)
24 V models: 6 mA typ.
48 V models: 4 mA typ.
Input current at full load (at nominal input voltage)
24 V; 3.3 VDC models: 760 mA typ.
24 V; other models: 980 mA typ..
48 V; 3.3 VDC models: 380 mA typ.
48 V; other models: 490 mA typ.
Start-up voltage / under voltage shut down
24 Vin models: 9 VDC / 8 VDC
48 Vin models: 18 VDC / 16 VDC
Surge voltage (1 sec. max.)
24 Vin models: 50 V max.
48 Vin models: 100 V max.
Reflected input ripple current
30 mAp-p typ.
Conducted noise (input)
EN 55022 class A, FCC part 15, level A
without external components
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. criteria A
Fast transient / Surge
EN 61000-4-4, 2 kV, perf. criteria A
EN 61000-4-5, 2 kV perf. criteria A
With external input capacitor e.g. Nippon
chemi-con KY 200 µF, 100 V, ESR 48 mOhm
Conducted immunity
EN 61000-4-6, 10 Vrms, perf. criteria A
Output Specifications
Voltage set accuracy
1 %
Output voltage adj. range
10 % for single output models only.
Trim up via resistor over Trim and -Vout
Trim down via resistor over Trim and +Vout
(Resistor values tba, 0 Ohm=max. adjustment)
Regulation
– Input variation (Vmin – Vmax) single output models: 0.2 % max.
dual output models: 0.5 % max.
single output models: 0.2 % max.
– Load variation (0 – 100 %)
dual output models balanced load: 1.0 % max.
dual output models unbalanced load (25% /100%): 5.0 % max.
Minimum load
not required
Ripple and noise (20 MHz bandwidth)
3.3 & 5.0 VDC models: 75 mVp-p typ.
other models: 100 mVp-p typ.
Measured with a 1µF M/C and a 10µF T/C
Temperature coefficient
Output current limitation
Short circuit protection
Over voltage protection
0.02 %/K
at 150 % of Iout max., foldback
indefinite, automatic recovery
3.3 VDC models: 3.7 – 5.4 Vout
5 VDC models: 5.6 – 7.0 Vout
12 VDC models: 13.5 – 19.6 Vout
15 VDC models: 16.8 – 20.5 Vout
Start up time (nominal Vin and constant resistive load)
Transient response setting time
30 ms typ. (for power on and remote on)
250 µs typ. (25% load step change)
3.3 VDC models: 10’000 µF
Max. capacitive load
5 VDC models: 5’000 µF
12 VDC models: 850 µF
15 VDC models: 700 µF
12 VDC models: 500 µF (each output)
15 VDC models: 350 µF (each output)
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