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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
TMR 3 Series 3 Watt
Input Specifications
Input current at full load / at no load 5 Vnom models: 810 mA max. / 60 mA typ.
(nominal input voltage) 12 Vnom models: 330 mA max. / 30 mA typ.
24 Vnom models: 160 mA max. / 18 mA typ.
48 Vnom models: 85 mA max. / 12 mA typ.
Surge voltage (100 msec. max.) 5 Vnom models: 15 V max.
12 Vnom models: 36 V max.
24 Vnom models: 50 V max.
48 Vnom models: 100 V max.
Input voltage variation (dv/dt) 5 V/ms, max.
(complies with ETS300 132 part 4.4)
Input filter capacitor type (see application note for
compliance to EN 55022 class A/B)
Start up time – Power On 30 ms typ.
(constant resistive load) – Remote On 30 ms typ.
Output Specifications
Voltage set accuracy ±1 % max
Regulation – Input variation Vin min. to Vin max. 0.2 % max.
– Load variation 5 – 100% single output models: 0.5 % max.
dual output models: 1.0 % max. balanced load
– Load variation 0 – 100% single output models: 1.0 % max.
dual output models: 1.0 % max. balanced load
– Load cross regulation 25/100% 5.0 % max. (dual output models)
Minimum load not required
Ripple and noise (20 MHz Bandwidth) 50 mVp-p max.
Transient response setting time (25% load step change) 500 µs typ.
Short circuit protection continuous, automatic recovery
Capacitive load 3.3 VDC / 5 VDC output models: 3300 µF max. / 1680 µF max.
12 VDC / 15 VDC output models: 820 µF max. / 680 µF max.
±5 VDC / ±12 VDC output models: ±1000 µF max. / ±470 µF max.
±15 VDC output models: ±330 µF max.
General Specifications
Temperature ranges – Operating –40°C to +85°C
– Case temperature +100°C max.
– Storage –55°C to +105°C
Load derating 3.3 %/K above 70°C
Humidity (non condensing) 5 – 95 % rel. H max.
Temperature coefficient ±0.02 %/K
Reliability, calculated MTBF (MIL-HDBK-217F, at +25°C, ground benign) >4.8 Mio h
Isolation voltage (60 sec.) – Input/Output 1600 VDC
with suffix -HI: 3000 VDC
Isolation capacitance – Input/Output 200 pF max.
with suffix -HI: 40 pF max.
Isolation resistance – Input/Output (500 VDC) >1 GOhm
Switching frequency 100 kHz min. (PFM)
Remote On/Off – On: open or high impedance
– Off: 2...4 mA current applied via 1KOhm resistor
– Off stand by input current 2.5 mA max.