Non-Isolated DC/DC Converter (POL)
TSRN 1 Series, 1 A
•
SIP-package fits existing TO-220
footprint
•
Suitable for positive & negative output
circuit
•
Pin compatible with LMxx linear
regulators
•
Built in filter capacitors
•
Operation temp. range –40°C to +85°C
•
No heat-sink required
•
Over-temperature & short circuit
protection
•
Wide input range up to 36 VDC
•
Excellent line/load regulation
•
3-year product warranty
The new TSRN-1 series step-down switching regulators are drop-in replace-
ment for inefficient 78xx linear regulators. A high efficiency up to 95% allows
full load operation up to +70°C (+85°C with derating) ambient temperature
without the need of any heat-sink or forced air cooling.
The TSRN-1 switching regulators provide other significant features over linear
regulators, i.e. better output accuracy (±2%), lower standby current of ~2 mA
and no requirement of external capacitors. They are suitable for positive or neg-
ative output circuits. The high efficiency and low standby power consumption
make these regulators an ideal solution for energy sensitive applications.
Models
Order Code
Output Current
max.
Input Voltage
Range
Efficiency
typ.
TSRN 1-2415
1'000 mA
4.6 - 36 VDC (12 VDC nom.)
77 % (at Vin min.)
TSRN 1-2418
81 % (at Vin min.)
TSRN 1-2425
84 % (at Vin min.)
TSRN 1-2433
88 % (at Vin min.)
TSRN 1-2450
6.5 - 36 VDC (12 VDC nom.)
92 % (at Vin min.)
TSRN 1-2465
8 - 36 VDC (12 VDC nom.)
93 % (at Vin min.)
TSRN 1-2490
10.5 - 36 VDC (12 VDC nom.)
95 % (at Vin min.)
TSRN 1-24120
13.5 - 36 VDC (24 VDC nom.)
95 % (at Vin min.)
TSRN 1-24150
16.5 - 36 VDC (24 VDC nom.)
96 % (at Vin min.)
Options
Suffix A
- Models with angular pin version (see outline dimensions)
Note
- For external circuit proposal for negative output voltage, refer to application note
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April 27, 2020
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Input Current
- At no load
12 Vin models:
2 mA typ.
24 Vin models:
3 mA typ.
Reflected Ripple Current
12 Vin models:
100 mAp-p typ.
24 Vin models:
100 mAp-p typ.
Recommended Input Fuse
12 Vin models:
2'000 mA (slow blow)
24 Vin models:
2'000 mA (slow blow)
(The need of an external fuse has to be assessed
in the final application.)
Input Filter
Internal Capacitor
Input Specifications
Voltage Set Accuracy
±2% max.
Regulation
- Input Variation (Vmin - Vmax)
0.2% max.
- Load Variation (10 - 100%)
0.6% max. (1.5 Vout models, straight pin vers.)
1.2% max. (1.5 Vout models, angular pin vers.)
0.4% max. (1.8 Vout models, straight pin vers.)
1.2% max. (1.8 Vout models, angular pin vers.)
0.4% max. (other output models, both pin vers.)
Ripple and Noise
(20 MHz Bandwidth)
1.5 Vout models:
50 mVp-p max.
1.8 Vout models:
50 mVp-p max.
2.5 Vout models:
50 mVp-p max.
3.3 Vout models:
50 mVp-p max.
5 Vout models:
50 mVp-p max.
6.5 Vout models:
50 mVp-p max.
9 Vout models:
75 mVp-p max.
12 Vout models:
75 mVp-p max.
15 Vout models:
75 mVp-p max.
Capacitive Load
470 µF max.
Minimum Load
Not required
Temperature Coefficient
±0.015 %/K max.
Start-up Time
5 ms typ.
Start-up Overshoot Voltage
1% max.
Short Circuit Protection
Continuous, Automatic recovery
Output Current Limitation
200% typ. of Iout max.
Transient Response
- Peak Variation
150 mV typ. / 250 mV max. (50% Load Step)
- Response Time
250 µs typ. / 350 µs max. (50% Load Step)
Output Specifications
Relative Humidity
95% max. (non condensing)
Temperature Ranges
- Operating Temperature
–40°C to +85°C
- Case Temperature
+100°C max.
- Storage Temperature
–55°C to +125°C
Power Derating
- High Temperature
2.86 %/K above 65°C
Over Temperature
Protection Switch Off
- Protection Mode
170°C typ. (Automatic recovery)
- Measurement Point
Internal IC temperature
Cooling System
Natural convection (20 LFM)
Switching Frequency
240 - 360 kHz (PWM) (1.5 - 3.3 Vout models)
464 - 696 kHz (PWM) (5 - 15 Vout models)
Insulation System
Non-isolated
Reliability
- Calculated MTBF
20'000'000 h (MIL-HDBK-217F, ground benign)
General Specifications
TSRN 1 Series, 1 A
All specifications valid at nominal voltage, full load and +25°C after warm-up time unless otherwise stated.
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April 27, 2020
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Environment
- Vibration
MIL-STD-810F
EN 61373
- Mechanical Shock
MIL-STD-810F
EN 61373
- Thermal Shock
MIL-STD-810F
EN 61373
Housing Material
Non-conductive Plastic (UL94 V-0 rated)
Potting Material
Silicone (UL 94 V-0 rated)
Pin Material
Copper
Pin Foundation Plating
Nickel (2 - 3 µm)
Pin Surface Plating
Tin (3 - 5 µm), matte
Soldering Profile
Wave Soldering
265°C / 10 s max.
Connection Type
THD (Through-Hole Device)
Weight
1.9 g
Environmental Compliance
- Reach
www.tracopower.com/info/reach-declaration.pdf
- RoHS
www.tracopower.com/info/rohs-declaration.pdf
Supporting Documents
Overview Link (for additional Documents)
www.tracopower.com/overview/tsrn1
Outline Dimensions
Straight pin version (Standard)
TSRN 1 Series, 1 A
All specifications valid at nominal voltage, full load and +25°C after warm-up time unless otherwise stated.
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April 27, 2020
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Dimensions in mm (inch)
Tolerances: x.xx ±0.5 (x.x ±0.02)
Tolerances: x.xxx ±0.25 (x.xx ±0.01)
Pin pich tolerances: ±0.25 (±0.01)
Pin dimension tolerances: ±0.1 (±0.004)
0.5 (0.02)
10.2 (0.40)
4.1
(0.16)
2.54
0.5 (0.02)
2.54
(0.1) (0.1)
11.7 (0.46)
2.4 (0.095)
7.5 (0.30)
Bottom view
1 2 3
0.25 (0.01)
3.3
(0.13)
Pinout
Pin Function
1+Vin
2GND
3+Vout
Angular pin version (Suffix A)
TSRN 1 Series, 1 A
0.5 (0.02)
10.2 (0.40)
2.54
0.5 (0.02)
2.54
(0.1) (0.1)
11.7 (0.46)
2.3 (0.09)
7.5 (0.30)
Bottom view
123
3.3
(0.13)
4.1
(0.16)
0.25 (0.01)
1.5 (0.06)
Dimensions in mm (inch)
Tolerances: x.xx ±0.5 (x.x ±0.02)
Tolerances: x.xxx ±0.25 (x.xx ±0.01)
Pin pich tolerances: ±0.25 (±0.01)
Pin dimension tolerances: ±0.1 (±0.004)
Pinout
Pin Function
1+Vin
2GND
3+Vout
© Copyright 2020 Traco Electronic AG Specifications can be changed without notice.
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Rev. April 27, 2020
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