THL20WI Datasheet, PDF (2/4 Pages) Touchstone Semiconductor Inc – DC/DC Converters

DC/DC Converters
THL 20WI Series 20 Watt
Input Specifications
Input current at no load (at nominal input voltage)
24 V single output models:
24 V dual output models:
48 V single output models:
48 V dual output models:
80 mA typ.
40 mA typ.
40 mA typ.
25 mA typ.
Input current at full load (at nominal input voltage)
24 V; 3.3 VDC models:
24 V; other models:
48 V; 3.3 VDC models:
48 V; other models:
700 mA typ.
940 mA typ..
350 mA typ.
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.)

24 Vin models: 50 V max.
48 Vin models: 100 V max.
Reflected input ripple current

24 V models: 50 mAp-p typ.
48 V models: 30 mAp-p typ.
Conducted noise (input) 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)

– Load variation

single output models:
dual output models:
single output models:
dual output models:
0.2 % max.
0.5 % max.
0.5 % max. (0 – 100 % load)
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 ±0.02 %/K
Output current limitation at 150 % of Iout max., foldback
Short circuit protection indefinite, automatic recovery
Transient response setting time 300 µs typ. (25% load step change)
Max. capacitive load






3.3 VDC models:
5 VDC models:
12 VDC models:
15 VDC models:
24 VDC models:
±12 VDC models:
±15 VDC models:
10’300 µF
6’800 µF
1’200 µF
750 µF
300 µF
680 µF (each output)
380 µF (each output)
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