THL25 Datasheet, PDF (2/4 Pages) Touchstone Semiconductor Inc – DC/DC Converters

DC/DC Converters
THL 25 Series
25 Watt
Input Specifications
Input current at no load (at nominal input voltage)


12 Vin models: 80 mA typ.
24 Vin models: 55 mA typ.
48 Vin models: 40 mA typ.
Recommended input fuse (slow blow)


12 Vin models: 5000 mA
24 Vin models: 2500 mA
48 Vin models: 1250 mA
Start-up voltage


12 Vin models: 9 VDC (or lower)
24 Vin models: 18 VDC (or lower)
48 Vin models: 36 VDC (or lower)
Surge voltage (0.1 sec. max.)


12 Vin models: 25 V max.
24 Vin models: 50 V max.
48 Vin models: 100 V max.
Reflected input ripple current


12 Vin models: 80 mAp-p typ.
24 Vin models: 50 mAp-p typ.
48 Vin models: 30 mAp-p typ.
Conducted noise (input) EN 55022 class A with external L/C
EN 55022 class B with external filter
see application note
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 (with external input capacitor) EN 61000-4-4, ±2 kV, perf. criteria A
EN 61000-4-5, ±1 kV perf. criteria A
external input capacitor:
Nippon chemi-con KY 220 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 between Trim and -Vout
Trim down via resistor between Trim and +Vout
resistor values see application note
Regulation
– Input variation (Vmin – Vmax) 0.2 % max.
– Load variation
single output models: 0.2 % max. (0 – 100 % load)
dual output models: 1.0 % max. (0 – 100 % balanced load)
–Cross regulation
dual output models: 5.0 % max. (25 – 100 % asymmetrical load)
Minimum load not required
Ripple and noise (20 MHz bandwidth)
3.3 & 5.0 VDC models: 100 mVp-p typ.
12 & 15 VDC models: 150 mVp-p typ.
Temperature coefficient ±0.02 %/K
Output current limitation at 150 % of Iout max., hiccup
Short circuit protection indefinite, automatic recovery
Over voltage protection shutdown at +20% of nominal output
Transient response setting time 250 µs typ. (25% load step change)
Max. capacitive load





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