DC/DC Converters
THL 20WI Series
20 Watt
Input Specifications
Input current at no load (at nominal input voltage)
24 V single output models: 80 mA typ.
24 V dual output models: 40 mA typ.
48 V single output models: 40 mA typ.
48 V dual output models: 25 mA typ.
Input current at full load (at nominal input voltage)
24 V; 3.3 VDC models: 700 mA typ.
24 V; other models: 940 mA typ..
48 V; 3.3 VDC models: 350 mA typ.
48 V; other models: 470 mA typ.
Start-up voltage
24 V models: 9 VDC (or lower)
48 V models: 18 VDC (or lower)
Surge voltage (1 sec. max.)
Reflected input ripple current
Conducted noise (input)
24 Vin models: 50 V max.
48 Vin models: 100 V max.
24 V models: 50 mAp-p typ.
48 V models: 30 mAp-p typ.
EN 55022 class A, FCC part 15, level A
with external components (see application note)
Recommended input fuse (slow blow)
24 V models: 5000 mA
48 V models: 2500 mA
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.
– Load variation
single output models: 0.5 % max. (0 – 100 % load)
dual output models: 1.0 % max. (8 – 100 % balanced load)
Minimum load
single output models: not required
dual output models: 8 % of rated max current (operation at lower
load condition will not damage the converters.
However, they may not meet all listed specifications)
Ripple and noise (20 MHz bandwidth)
3.3 & 5.0 VDC models: 75 mVp-p typ.
12 & 15 VDC models: 100 mVp-p typ.
24 VDC models: 150 mVp-p typ.
Measured with a 1µF M/C and a 10µF T/C
Temperature coefficient
Output current limitation
Short circuit protection
Transient response setting time
Max. capacitive load
0.02 %/K
at 150 % of Iout max., foldback
indefinite, automatic recovery
300 µs typ. (25% load step change)
3.3 VDC models: 10’300 µF
5 VDC models: 6’800 µF
12 VDC models: 1’200 µF
15 VDC models: 750 µF
24 VDC models: 300 µF
12 VDC models: 680 µF (each output)
15 VDC models: 380 µF (each output)
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