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All specifications valid at nominal input voltage, full load and +25°C after warm-up time unless otherwise stated.
DC/DC Converters
THD 12 Series 12 Watt
Input Specifications
Input current (no load) 12 Vin; 2.5/ 3.3 / 5.1 Vout models: 55 mA typ.
12 Vin other models: 20 mA typ.
24 Vin; 2.5/ 3.3 / 5.1 Vout models: 35 mA typ.
24 Vin other models: 15 mA typ.
48 Vin; 2.5/ 3.3 / 5.1 Vout models: 20 mA typ.
24 Vin other models: 6 mA typ.
Input current (full load) 12 Vin; 2.5 Vout models: 935 mA typ.
12 Vin other models: 1250 mA typ.
24 Vin; 2.5 Vout models: 460 mA typ.
24 Vin other models: 600 mA typ.
48 Vin; 2.5 Vout models: 230 mA typ.
48 Vin other models: 300 mA typ.
Start-up voltage 12 Vin models: 9 VDC (or lower)
24 Vin models: 18 VDC (or lower)
48 Vin models: 36 VDC (or lower)
Under voltage shut down (lock-out circuit) 12 Vin models: 8 VDC typ.
24 Vin models: 16 VDC typ.
48 Vin models: 33 VDC typ.
Surge voltage (100 msec. max.) 12 Vin models: 36 V max.
24 Vin models: 50 V max.
48 Vin models: 100 V max.
Conducted noise (input) EN 55022 level A, FCC part 15, level A
with external capacitor
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. criteriy A
Fast transient / Surge EN 61000-4-4, ±2 kV, perf. criteria A
EN 61000-4-5, ±1 kV perf. criteria A
with external input capacitor e.g. Nippon
chemi-con KY 220 µF, 100 V, ESR 48 mOhm
Conducted immunity EN 61000-4-6, 10 Vrms, perf. criteria A
Reflected ripple current 20 mAp-p typ.
Output Specifications
Voltage set accuracy ±1.2 %
Regulation – Input variation single output models: ±0.2 % max. (Vin min. to Vin max)
dual output models: ±0.5 % max. (Vin min. to Vin max)
– Load variation 0 – 100 % 0.5 % max. (1.0% max. for 2.5 Vout models)
dual output models balanced load: 1.0 % max.
– Load cross regulation 25/100% 5.0 % max. (dual output models)
Minimum load not required
Ripple and noise (20 MHz Bandwidth) 85 mVp-p typ.
Temperature coefficient ±0.02 %/K
Output current limitation 150 % typ. of Iout max.
Short circuit protection continuous, automatic recovery
Start up time (nominal Vin and constant resistive load) 450 ms typ.
Transient response setting time (25% load step change) 250 µs
Over voltage protection (single output models only) 2.5 & 3.3 VDC models: 3.9 VDC
5.1 VDC models: 6.2 VDC
12 VDC models: 15 VDC
15 VDC models: 18 VDC
Capacitive load 2.5/ 3.3/ 5.1 Vout models: 2000 µF max.
12 Vout models: 430 µF max.
±12 Vout models: ±200 µF max.
±15 Vout models: ±120 µF max.