TRACOPOWER TSR-1 User Manual

Features

◆ 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

DC/DC Converters

TSR-1 Series, 1 A

The new 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 features 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 Input voltage range Output voltage Output current Efficiency typ.

@ Vin min. @

91 % 78 %

TSR 1-2412 4.6 – 36 VDC*
TSR 1-2415 4.6 – 36 VDC*
TSR 1-2418 4.6 – 36 VDC*
TSR 1-2425 4.6 – 36 VDC*
TSR 1-2433 4.75 – 36 VDC*
TSR 1-2450 6.5 – 36 VDC*
TSR 1-2465 9.0 – 36 VDC*

TSR 1-2490 12 – 36 VDC*
TSR 1-24120 15 – 36 VDC*
TSR 1-24150 18 – 36 VDC*

max.

1.2 VDC 74 % 62 %

1.5 VDC 78 % 65 %

1.8 VDC 82 % 69 %

2.5 VDC 87 % 75 %

3.3 VDC

5.0 VDC 94 % 84 %

6.5 VDC 93 % 87 %

9.0 VDC 95 % 90 %
12 VDC 95 % 92 %
15 VDC 96 % 94 %

1.0 A

Vin max.

* For input voltage higher than 32 VDC an input capcitor 22 µF / 50 V is required. See application notes (page 3)

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DC/DC Converters

TSR-1 Series 1 A

Input Specifications

Maximum input current (@ Vin min. and 1 A output current) 1 A
No load input current 1 mA typ.
Reflected ripple current 150 mA see application notes (page 3) for to

meet EN55022 class A

Input filter internal capacitors

Output Specifications

Voltage set accuracy ±2 % (at full load)
Regulation – Input variation 0.2 %

– Load variation (10 – 100 %) 1.2 & 1.5 VDC models: 0.6 %
other models: 0.4 %

Overshoot startup voltage 1.0 % max.
Minimum load not required
Ripple and noise (20 MHz Bandwidth) 1.2 – 6.5 VDC models: 50 mVpk-pk max.

9 – 15 VDC models: 75 mVpk-pk max.
Temperature coefficient ±0.015 % / °C max.
Dynamic load response 50% load change (upper half) 150 mV max. peak variation

250 µS max. response time
Startup rise time 10 % to 90 % Vout 2 mS
Short circuit protection continuous, automatic recovery
Current limitation @ 2.5 A typ.
Capacitive load 470 µF max.

General Specifications

Temperature ranges – Operating –40°C to +85°C
– Storage –55°C to +125°C

Derating 2.4 %/K above 60°C
Thermal shock acc. MIL-STD-810F
Humidity (non condensing) 95 % rel H max.
Reliability, calculated MTBF (MIL-HDBK-217F, @ 25°C, ground benign) >5’350’000 h
Isolation voltage none
Isolation capacity – Input/Output 40 pF typ.
Isolation resistance – Input/Output >1‘000 Mohm
Switching frequency 500 kHz typ.
Safety standards UL 60950-1, EN 60950-1, IEC 60950-1

Physical Specifications

Casing material non-conductive plastic
Potting material epoxy (flammability to UL 94V-0 rated)
Package weight 1.9 g (0.07 oz)
Soldering profile max. 265°C / 10 sec. (wave soldering)

All specifications valid at nominal input voltage, full load and +25°C after warm-up time unless otherwise stated.

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enatschstrasse 1 · CH-8002 Zurich · Switzerland

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0.5

(0.02)

10.2

(0.40)

4.1

(0.16)

2.54

0.5

2.54

(0.1) (0.1)

(0.02)

11.7

(0.46)

2.0

(0.08)

7.6

(0.30)

Bottom view

123

0.3

(0.01)

3.3

(0.13)

Applications notes

Load

C1

+Vin +Vout

GND

Input

TSR 1

Load

C1

+Vin +Vout

GND

Input

TSR 1

C2

L1

For input voltage higher than 32 VDC (max. 36 VDC)

Input filter to meet EN 55022 class A

DC/DC Converters

TSR-1 Series 1 A

C1 = 22 µF / 50 V

C1 = 4.7 µF / 50 V
C2 = 4.7 µF / 50 V
L1 = 8.2 µH / 1.5 A / 0.08 Ohm

Outline Dimensions

Pin-Out

1
2
3

Dimensions in [mm], () = Inch
Pin pitch tolerances: ±0.25 (±0.01)
Pin profile tolerance: ±0.1 (±0.004)
Other tolerances: ±0.5 (±0.02)

+Vin

GND

+Vout

Specifications can be changed any time without notice.

Rev. 06/09

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