Non-Isolated DC/DC Converter (POL) TSR 1.5E Series, 1.5 A Highly cost efficient design Pin compatible with TO-220 package 78xx linear regulators Operation temperature. range 40C to +85C without derating Efficiency up to 97% The TSR 1.5E is a 1.5 Ampere step-down switching regulator series and a Wide input operating range 7-36 VDC drop-in replacement for inefficient LM78xx linear regulators. This series comes in a compact SIP-3 open frame package and complements our existing POL Short circuit protection portfolio with a series focusing strongly on a cost efficient design while main- Excellent line / load regulation taining our quality standards. There are 3 output voltages available: 3.3, 5.0 and 12VDC. The effective design allows full load operation up to +85C ambi- 3-year product warranty ent temperature without the need of any heat sink or forced cooling. The TSR 1.5E switching regulators provide other significant features over linear regula- tors, i.e. better output accuracy, lower standby current and no requirement of external capacitors. The TSR 1.5E series offers a broad application range in many environments and is especially suited for high volume projects where the series will help to reduce production cost by delivering not only a highly cost ef- ficient but also reliable solution. Models Order Code Output Current Input Voltage Output Voltage Efficiency max. Range nom. typ. TSR 1.5-2433E 3.3 VDC 93 % (at Vin min.) 1 500 mA 7 - 36 VDC (24 VDC nom.) TSR 1.5-2450E 5 VDC 95 % (at Vin min.) TSR 1.5-24120E 1 000 mA 15 - 36 VDC (24 VDC nom.) 12 VDC 97 % (at Vin min.) Note - For input voltage higher 24 VDC an input capacitor of 22 F is required Page 1 / 3 www.tracopower.com February 12, 2021TSR 1.5E Series, 1.5 A Input Specifications Input Current - At no load 15 mA max. Surge Voltage 40 VDC max. (1 s max.) Input Inrush Current 70 A typ. (12 Vout model) 30 A typ. (other models) Recommended Input Fuse 2 000 mA (fast acting) (The need of an external fuse has to be assessed in the final application.) Input Filter Internal Capacitor Output Specifications Voltage Set Accuracy 4% max. (at 50% load) Regulation - Input Variation (Vmin - Vmax) 0.7% max. - Load Variation (25 - 100%) 0.7% max. Ripple and Noise 3.3 Vout models: 40 mVp-p max. (w/ 47 F) (20 MHz Bandwidth) 5 Vout models: 75 mVp-p max. (w/ 47 F) 12 Vout models: 75 mVp-p max. (w/ 47 F) Capacitive Load 3.3 Vout models: 1 200 F max. 5 Vout models: 660 F max. 12 Vout models: 470 F max. Minimum Load Not required Temperature Coefficient 0.02 %/K max. Hold-up Time 40 s min. (3.3 Vout model) 160 s min. (5 Vout model) 1 400 s min. (12 Vout model) Start-up Time 2.1 ms max. Short Circuit Protection Continuous, Automatic recovery Output Current Limitation 200 - 500% of Iout max. Transient Response - Peak Variation 70 mV max. (50% to 100% Load Step) (3.3 Vout model) 90 mV max. (50% to 100% Load Step) (5 Vout model) 130 mV max. (50% to 100% Load Step) (12 Vout model) - Response Time 75 s typ. (50% to 100% Load Step) EMC Specifications EMI Emissions - Conducted Emissions EN 55032 class A (with external filter) EN 55032 class B (with external filter) - Radiated Emissions EN 55032 class A (with external filter) EN 55032 class B (with external filter) External filter proposal: www.tracopower.com/overview/tsr1-5e General Specifications Relative Humidity 95% max. (non condensing) Temperature Ranges - Operating Temperature 40C to +85C (without derating) - Case Temperature +130C max. - Storage Temperature 55C to +125C Power Derating - High Temperature 4 %/K above 85C Over Temperature - Protection Mode 130C to 140C (Automatic recovery at 130C Protection Switch Off typ.) - Measurement Point Internal IC temperature Cooling System Natural convection (20 LFM) Altitude During Operation 2 000 m max. All specifications valid at nominal voltage, full load and +25C after warm-up time unless otherwise stated. Page 2 / 3 www.tracopower.com February 12, 2021