DC/DC Converters
THN 20WI Series 20 Watt
Input Specifications
Input current at no load
(at nominal input voltage)
– 24 Vin
– 48 Vin
3.3, 5.0, 24 Vout models: 10 mA typ.
12, 15, 12, 15 Vout models: 6 mA typ.
24 Vout models: 12 mA typ.
3.3, 5.0, 24 Vout models: 10 mA typ.
24 Vout models: 8 mA typ.
all other models: 4 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 s 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 55032 class A, FCC part 15, level A
without external components
– Filter proposal for compling to EN 55032 class B
www.tracopower.com/overview/thn20wi
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
5.0 Vout A1 models: –10 to +20 %
24 Vout models: –10 to +20 %
all other models: 10 % only for single output models
– For further information see application note
www.tracopower.com/overview/thn20wi
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)
single output models: 75 mVp-p typ.with external capacitor
dual output models: 100 mVp-p typ. with external capacitor
– For further information see application note
www.tracopower.com/overview/thn20wi
Temperature coefficient
Output current limitation
Short circuit protection
Over voltage protection
0.02 %/K
typ. 150 % of Iout max., Hiccup
continuous, automatic recovery
3.3 Vout models: 3.7 – 5.4 VDC
5.0 Vout models: 5.6 – 7.0 VDC
5.0 Vout A1 models: 6.3 – 7.4 VDC
12 Vout models: 13.5 – 19.6 VDC
15 Vout models: 16.8 – 20.5 VDC
24 Vout models: 29.1 – 32.5 VDC
Start up time (nominal Vin and constant resistive load)
30 ms typ. (for power on and remote on)
250 µs typ. (25% load step change)
Transient response setting time
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