TSR 3-1250A TRACO Power

Non-Isolated DC/DC Converter (POL) TSR 3 Series, 3 A High performance 3 Amp. switching regulator Suitable for positive & negative output circuit High efficiency up to 95 % Adjustable output voltages The TSR 3 models are non isolated step down switching regulators. Since pro- Wide input voltage ranges 2.55.5, duction May 2013 they can also be operated with negative output voltage. 4.514 and 1030 VDC They come in a very compact open frame package of 15.5 x 9.4 x 6.2mm. The high efficiency of up to 95% admits a full load operation up to 50C and up to Short circuit protection 85C with 50% current reduction. A low standby current, a very wider input Remote On/Off input range and no requirement for heatsink give these switching regulators a signifi- cant advantage over linear regulators. Low output ripple & noise Togther with a remote On/Off input and protection against short circuit the TSR 3-year product warranty 3 Series models are ideal point of load regulators for high reliable and energy critical applications. Models Order Code Output Current Input Voltage Output Voltage Efficiency max. Range nom. (adjustable) typ. TSR 3-0533 2.5 - 5.5 VDC (5 VDC nom.) 0.6 VDC (0.6 - 3.3 VDC) 95 % (at 2.5 Vout) 93 % (at 3.3 Vout) TSR 3-1250 4.5 - 14 VDC (12 VDC nom.) 0.6 VDC (0.6 - 6.0 VDC) 3 000 mA 3 VDC (3.0 - 6.0 VDC) 91 % (at 5.0 Vout) TSR 3-2450 10 - 30 VDC (24 VDC nom.) 95 % (at 12 Vout) TSR 3-24150 5 VDC (5.0 - 15.0 VDC) Options Suffix A - Optional models with angular pins (see outline dimensions) Note - TSR 3-1250: max. 9 Vin if Vout <0.9 VDC - For external circuit proposal for negative output voltage, refer to application note Page 1 / 5 www.tracopower.com November 24, 2021TSR 3 Series, 3 A Input Specifications Input Current - At no load 5 Vin models: 20 mA typ. 12 Vin models: 25 mA typ. 24 Vin models: 25 mA typ. (at Vin nom.) - At full load 5 Vin models: 3 000 mA max. 12 Vin models: 2 600 mA max. 24 Vin models: 2 200 mA max. (3 Vout model) 3 000 mA max. (5 Vout model) (at Vin min.) Reflected Ripple Current 5 Vin models: 30 mAp-p typ. 12 Vin models: 30 mAp-p typ. 24 Vin models: 30 mAp-p typ. (24 Vin models: Ext. filter, see application note) Recommended Input Fuse 5 Vin models: 5 000 mA (slow blow) 12 Vin models: 5 000 mA (slow blow) 24 Vin models: 5 000 mA (slow blow) (The need of an external fuse has to be assessed in the final application.) Input Filter Internal Capacitor Output Specifications Output Voltage Adjustment 0.6 Vout models: 0.6 - 3.3 VDC 0.6 - 6.0 VDC 3 Vout models: 3.0 - 6.0 VDC 5 Vout models: 5.0 - 15.0 VDC (By external trim resistor) www.tracopower.com/overview/tsr3 See application note: (TSR 3-0533: Vin at least 0.5 V higher than Vout TSR 3-1250: Vin at least 2 V higher than Vout TSR 3-24150: Vin at least 3 V higher than Vout) Voltage Set Accuracy 2% max. Regulation - Input Variation (Vmin - Vmax) 0.2% max. (Vout >2.5 VDC) 5 mV typ. (Vout <2.5 VDC) - Load Variation (10 - 90%) 0.8% max. (Vout >2.5 VDC) 15 mV typ. (Vout <2.5 VDC) Ripple and Noise 5 Vin models: 50 mVp-p typ. (20 MHz Bandwidth) 12 Vin models: 50 mVp-p typ. 3 Vout models: 75 mVp-p typ. 5 Vout models: 150 mVp-p typ. Capacitive Load 0.6 Vout models: 1 000 F max. 3 Vout models: 1 000 F max. 5 Vout models: 500 F max. (ESR >1 mOhm) Minimum Load Not required Temperature Coefficient 1 %/K max. Start-up Overshoot Voltage 1% max. Short Circuit Protection Continuous, Automatic recovery Output Current Limitation 280% typ. of Iout max. (5 Vin models) 220% typ. of Iout max. (other models) Transient Response - Peak Variation 250 mV typ. / 500 mV max. (50% Load Step) (5.0 Vout model) 150 mV typ. / 250 mV max. (50% Load Step) (other models) - Response Time 120 s typ. / 220 s max. (50% Load Step) All specifications valid at nominal voltage, resistive full load and +25C after warm-up time, unless otherwise stated. Page 2 / 5 www.tracopower.com November 24, 2021