Non-Isolated DC/DC Converter (POL)
TSR 1 Series, 1 A
•
Up to 96% efficiency – No heat-sink
required
•
Pin compatible with LMxx linear
regulators
•
SIP-package fits existing TO-220
footprint
•
Built in filter capacitors
•
Operation temp. range –40°C to +85°C
•
Short circuit protection
•
Wide input operating range
•
Excellent line / load regulation
•
Low standby current
•
3-year product warranty
The TSR 1 series step-down switching regulators are drop-in replacement for
inefficient 78xx linear regulators. A high efficiency up to 96% allows full load
operation up to +60°C ambient temperature without the need of any heat-sink
or forced cooling. The TSR 1 switching regulators provide other significant fea-
tures over linear regulators, i.e. better output accuracy (±2%), lower standby
current of 2 mA and no requirement of external capacitors. The high efficiency
and low standby power consumption makes these regulators an ideal solution
for many battery powered applications.
Models
Order Code
Output Current
max.
Input Voltage
Range
Efficiency
typ.
TSR 1-2412
1'000 mA
4.6 - 36 VDC (9 VDC nom.)
74 % (at Vin min.)
TSR 1-2415
78 % (at Vin min.)
TSR 1-2418
82 % (at Vin min.)
TSR 1-2425
87 % (at Vin min.)
TSR 1-2433
4.75 - 36 VDC (9 VDC nom.)
91 % (at Vin min.)
TSR 1-2450
6.5 - 36 VDC (12 VDC nom.)
94 % (at Vin min.)
TSR 1-2465
9 - 36 VDC (12 VDC nom.)
93 % (at Vin min.)
TSR 1-2490
12 - 36 VDC (24 VDC nom.)
95 % (at Vin min.)
TSR 1-24120
15 - 36 VDC (24 VDC nom.)
95 % (at Vin min.)
TSR 1-24150
18 - 36 VDC (24 VDC nom.)
96 % (at Vin min.)
Note
- For input voltage higher than 32 VDC an external input capacitor (22 µF) is required.
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April 27, 2020
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Input Current
- At no load
9 Vin models:
1 mA typ.
12 Vin models:
1 mA typ.
24 Vin models:
1 mA typ.
- At full load
9 Vin models:
1'000 mA max.
12 Vin models:
1'000 mA max.
24 Vin models:
1'000 mA max.
(at Vin min.)
Reflected Ripple Current
9 Vin models:
150 mAp-p typ.
12 Vin models:
150 mAp-p typ.
24 Vin models:
150 mAp-p typ.
Recommended Input Fuse
- 9 Vin input
1.2 Vout models:
630 mA (slow blow)
1.5 Vout models:
800 mA (slow blow)
1.8 Vout models:
800 mA (slow blow)
2.5 Vout models:
1'250 mA (slow blow)
3.3 Vout models:
1'250 mA (slow blow)
- 12 Vin input
5 Vout models:
1'600 mA (slow blow)
6.5 Vout models:
1'250 mA (slow blow)
- 24 Vin input
9 Vout models:
1'250 mA (slow blow)
12 Vout models:
1'600 mA (slow blow)
15 Vout models:
1'600 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. (1.2 & 1.5 Vout models)
0.4% max. (other models)
Ripple and Noise
(20 MHz Bandwidth)
1.2 Vout models:
50 mVp-p typ.
1.5 Vout models:
50 mVp-p typ.
1.8 Vout models:
50 mVp-p typ.
2.5 Vout models:
50 mVp-p typ.
3.3 Vout models:
50 mVp-p typ.
5 Vout models:
50 mVp-p typ.
6.5 Vout models:
50 mVp-p typ.
9 Vout models:
75 mVp-p typ.
12 Vout models:
75 mVp-p typ.
15 Vout models:
75 mVp-p typ.
Capacitive Load
470 µF max.
Minimum Load
Not required
Temperature Coefficient
±0.015 %/K max.
Start-up Overshoot Voltage
1% max.
Short Circuit Protection
Continuous, Automatic recovery
Output Current Limitation
250% typ. of Iout max.
Transient Response
- Peak Variation
150 mV typ. / 200 mV max. (50% Load Step)
- Response Time
250 µs typ. / 350 µs max. (50% Load Step)
Output Specifications
EMI Emissions
- Conducted Emissions
EN 55032 class A (with external filter)
- Radiated Emissions
EN 55032 class A (with external filter)
External filter proposal:
www.tracopower.com/overview/tsr1
EMC Specifications
TSR 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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Relative Humidity
95% max. (non condensing)
Temperature Ranges
- Operating Temperature
–40°C to +85°C
- Storage Temperature
–55°C to +125°C
Power Derating
- High Temperature
2.4 %/K above 60°C
Over Temperature
Protection Switch Off
- Protection Mode
150°C typ. (Automatic recovery)
- Measurement Point
Internal IC temperature
Cooling System
Natural convection (20 LFM)
Switching Frequency
400 - 600 kHz (PWM)
500 kHz typ. (PWM)
Insulation System
Non-isolated
Reliability
- Calculated MTBF
25'710'000 h (MIL-HDBK-217F, ground benign)
Environment
- Vibration
MIL-STD-810F
- Thermal Shock
MIL-STD-810F
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
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
General Specifications
Supporting Documents
Overview Link (for additional Documents)
www.tracopower.com/overview/tsr1
Outline Dimensions
TSR 1 Series, 1 A
1 2 3
10.1 (0.40)
4.1
(0.16)
2 x 2.54 (2 x 0.10) 3.3 (0.13)
0.5 (0.02)
0.5 (0.02)
7.5 (0.30)
5.5
(0.22)
0.50 x 0.25 (0.02 x 0.01)
Bottom View
Dimensions in mm (inch)
Tolerances: ±0.5 (±0.02)
Pin pich tolerances: ±0.25 (±0.01)
Pins: ±0.05 (±0.002)
11.7 (0.46)
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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