PSR152.5-7IR_技术文档

PSA/PSR Series Data Sheet

Positive Switching Regulators

Features

• RoHS lead-free-solder and lead-solder-exempted

products are available

• Compliant to EN 45545 (version V104 or later)

• Input voltage up to 144 VDC

• Single output 5 to 48 V

• No input-to-output isolation

• High efficiency up to 95%

• Extremely wide input voltage range

• Low input-to-output differential voltage

• Very good dynamic properties

• Input undervoltage lockout

25

• Output voltage adjustment and inhibit function

• Continuously no-load and short-circuit proof

• All boards are coated with a protective lacquer

• Board or chassis mountable

1.0"

50

70

2.0"

2.8"

Safety-approved to the latest edition of IEC/EN 60950-1 and

UL/CSA60950-1

Description

for railway applications according to EN 50155 and EN 50121.

The PSA Series of positive switching regulators are designed

as power supplies for electronic systems when no input-to-

output isolation is required. Their major advantages include a

high level of efficiency, high reliability, low output ripple, and

excellent dynamic response. Models with input voltages up to

144 V are especially designed for secondary-switched and

battery-driven mobile applications. The regulators are suitable

The case design allows for operation up to 71 °C. The PSA

Series is designed for wall or chassis mounting with faston

connections or with solder pins for insertion into a PCB.

Various options are available to adapt the regulators to different

applications.

Table of Contents

Page

Description ............................................................................ 1

Model Selection .................................................................... 2

Functional Description .......................................................... 3

Electrical Input Data.............................................................. 4

Electrical Output Data ........................................................... 6

Auxiliary Functions ................................................................ 9

Electromagnetic Compatibility (EMC) ................................. 10

Immunity to Environmental Conditions ............................... 11

Mechanical Data ................................................................. 12

Safety and Installation Instructions ..................................... 12

Description of Options ........................................................ 13

Accessories......................................................................... 14

MELCHER

The Power Partners.

BCD20025-G Rev AE, 13-Jul-2017

Page 1 of 15

PSA/PSR Series Data Sheet

Positive Switching Regulators

Model Selection

Table 1: PSA Series

Output

voltage

V_{o nom}[V]

Output

current

I_{o nom}[A]

Operating input

voltage range

V_i[V]

Nom. input

voltage

V_{i nom}[V]

Efficiency ²

Type

designation

Options

η_min[%] η _typ[%]

5

2

3

4

5

8 – 80

7 – 40

7 – 35

40

20

71.5

85

82

74

87

83

PSR52-7

PSR53-9G

PSR54-9iG

PSA55-9iG

Y

-7, i, P, R, Y, non-G

-7, P, R, Y, non-G

-7, R, Y, non-G

81

5.1

2

5

8 – 40

7 – 35

20

75

83

-

PSA5A2-2

PSA5A5-2

i RY³

-7, iRY³

12

1.5

2.5

3

18 – 144 ¹

15 – 80

15 – 40

60

40

20

86

89

87

-

PSA121.5-9iRG

PSR122.5-9iG

PSA123-2

-7, Y, non-G

-7, P, R, Y, non-G

i RY³

15

1.5

2.5

3

22 – 144 ¹

19 – 80

19 – 40

60

40

30

86

88

90

87

89

-

PSA151.5-9iRG

PSR152.5-9G

PSA153-2

-7, Y, non-G

-7, P, R, Y, non-G

i RY³

24

1.5

2

2.5

31 – 144 ¹

29 – 80

29 – 60

60

50

40

92

91

93

92

-

PSA241.5-9iRG

PSR242-9iG

PSA242.5-2G

-7, Y, non-G

-7, P, R, Y, non-G

i RY³, non-G

36

1.2

2

44 – 144 ¹

42 – 80

80

60

94

92

95

94

PSA361-9iRG

PSR362-9iRG

-7, Y, non-G

48

1

58 –144 ¹

80

94

95

PSA481-9iRG

-7, Y, non-G

1

Surges up to 156 V for 2 s; see Electrical Input Data

Efficiency at V_{i nom}and I_{o nom}

Options iRY in a package

2

3

NFND: Not for new designs.

Preferred for new designs

Note: The output voltage V_ois adjusted to 108% of V_{o nom}

for all models with option P or R, if they don’t have option Y

in addition.

PSA 12 1.5 -9 i R G

Part Number Description

Positive switching regulator in case A01 ....... PSA or PSR

Nominal output voltage in Volt ................................ 5 to 48

Nominal output current in Ampere ............................ 1 to 5

Operational ambient temperature range T_A

–10 to 50 °C ........................................................ -2

–25 to 50°C (customer-specific models) ............ -5

–25 to 71 °C (option) ........................................... -7

–40 to 71 °C ........................................................ -9

other (customer-specific models) ....................... -0

Inhibit input (standard for all -7 and -9 models) ............... i

Control input for output voltage adjustment ^{1 ..........................}R

Potentiometer¹(option, NFND)........................................ P

RoHS-compliant for all 6 substances ............................. G

1

Option P (not available for PSA models) excludes feature R.

Note: The sequence of options must follow the order above.

Example: PSA121.5-9iRG designates a positive switching

regulator with an output 12 V, 1.5 A, ambient temperature –40

to 71 °C, inhibit input, output voltge adjust by R-pin, RoHS-

compliant for all 6 substances.

MELCHER

The Power Partners.

BCD20025-G Rev AE, 13-Jul-2017

Page 2 of 15

PSA/PSR Series Data Sheet

Positive Switching Regulators

PSA 12 Z 3 A -9iRG

Customer-specific Models

Positive switching regulator in case A01 .................... PSA

Nominal output voltage in Volt (without decimals) ......... 12

Decimal places:

0.0 V ..................................................................... Z

0.1 V ..................................................................... A

0.15 V ................................................................... B

0.2 V .................................................................... C

0.25 V .................................................................. D

0.3 V ..................................................................... E

0.4 V ..................................................................... F

0.5 V .................................................................... G

0.6 V .................................................................... H

0.7 V ..................................................................... J

0.8 V ..................................................................... K

0.9 V ..................................................................... L

other ..................................................................... Y

Output current in Ampère ................................................ 3

Identification character............................................ A, B, ..

Temperature range and options, e.g. ......................-9iRG

current, protection degree, batch no., serial no., data code

comprising production site, version (modification status), date

of production.

Produkt Marking

Type designation, applicable safety approval marks, pin

allocation, patent information, company logo.

Label with input voltage range, nominal output voltage and

duty cycle (on/off ratio) of the main switch. The regulator starts

operating only when the input voltage exceeds the trigger level

of the UVL (undervoltage lockout).

Functional Description

The switching regulators use the buck converter topology. The

input is not electrically isolated from the output. During the on

period of the switching transistor, current is transferred to the

output, and energy is stored in the output choke. During the off

period, this energy forces the current to continue flowing

through the output, to the load, and back through the

freewheeling diode. Regulation is accomplished by varying the

These regulators are ideal for a wide range of applications,

where input to output isolation is not necessary or is already

provided by an external front end (e.g., a transformer with

rectifier). To optimize customers’ needs, additional options and

accessories are available.

03016b

Bead

I_o

I_i

Vo+

Vi+

i

+

Control circuit

V_i

V_o

C_e

C_i

R

Go–

Gi–

Option P

Fig. 1

Block diagram.

The resistance of the input circuit

MELCHER

The Power Partners.

BCD20025-G Rev AE, 13-Jul-2017

Page 3 of 15

PSA/PSR Series Data Sheet

Positive Switching Regulators

Electrical Input Data

General Conditions: T_A= 25°C, unless T_Cis specified

Table 2a: Input data

Model

PSA55

PSA5A5

PSR54

PSA5A2

Unit

Characteristics

Conditions

min typ max min typ max min typ max min typ max

V_i

Operating input voltage

I_o= 0 – I_{o nom}

T_{C min}– T_{C max}

7

35

7

35

7

40

8

40

V

∆V_{io min}Min. diff. voltage V_i– V_o

V_{i UVL}Undervoltage lockout

2

6.3 6.6

45

1.9

2

6.3 6.5

45

2.9

6.3 6.4

7.3 7.6

I_{i 0}

No load input current

Peak value of inrush current

Input resistance

I_o= 0, V_{i min}–V_{i max}

50

mA

A

I_{inr p}

R_i

V_{i nom}

75

10

6.8

--

75

10

6.8

--

10

mΩ

µF

C_i

Input capacity

6.8

v_{i RFI}

EN 55011, 0.15 – 30 MHz

V_{i nom}, I_{o nom}

B ¹

Class

Tab. 2b: Input data

Model

PSA123

typ

PSA153

typ max

PSA242.5

min typ

29

Unit

Characteristics

Conditions

min

max

40

min

max

60

V_i

Operating input voltage

I_o= 0 – I_{o nom}

T_{C min}– T_{C max}

15

19

40

4

V

∆V_iominMin. diff. voltage (V_i– V_o)

V_{i UVL}Undervoltage lockout

3

5

7.3

8.0

50

7.3

9.0

50

12

13.7

50

I_{i 0}

No load input current

Peak value of inrush current

Input resistance

I_o= 0, V_{i min}– V_{i max}

mA

A

I_{inr p}

R_i

V_{i nom}

75

10

6.8

--

150

10

6.8

--

150

10

6.8

--

mΩ

µF

C_i

Input capacity

v_{i RFI}

EN 55011, 0.15 – 30 MHz

V_{i nom}, I_{o nom}

Class

Tab. 2c: Input data

Model

PSR52

typ

PSR53

PSR122.5

Unit

Characteristics

Conditions

min

max

80

min

typ max

min typ

max

80

3

V_i

Operating input voltage

I_o= 0 – I_{o nom}

T_{C min}– T_{C max}

8

80

3

15

V

∆V_iominMin. diff. voltage (V_i– V_o)

V_{i UVL}Undervoltage lockout

3

7.3

7.6

40

7.3

7.6

40

7.3

8

I_{i 0}

I_{inr p}

R_i

No load input current

Peak value of inrush current

Input resistance

I_o= 0, V_{i min}– V_{i max}

35

mA

A

V_{i nom}

150

10

150

10

150

10

mΩ

µF

C_i

Input capacity

6.8

v_{i RFI}

EN 55011, 0.15 – 30 MHz

V_{i nom}, I_{o nom}

B ²

Class

1

With C_e= 470 µF / 40 V and input filter FP38; see Accessories.

With C_e= 470 µF / 100 V and input filter FP80; see Accessories.

2

MELCHER

The Power Partners.

BCD20025-G Rev AE, 13-Jul-2017

Page 4 of 15

PSA/PSR Series Data Sheet

Positive Switching Regulators

Table 2d: Input data. General Conditions as per table 2a

Model

PSR152.5

PSR242

PSR362

PSA121.5

Unit

Characteristics

Conditions

min typ max min typ max min typ max min typ max

V_i

Operating input voltage

I_o= 0 – I_{o nom}

T_{C min}– T_{C max}

19

80 29

3

80

42

80

18

144 ¹

V

∆V_iominMin. diff. voltage V_i– V_o

V_{i UVL}Undervoltage lockout

4

12 13.7

35

5

19 20.5

40

6

12 12.5

20

7.3 9.0

35

I_{i 0}

No load input current

Peak value of inrush current

Input resistance

I_o= 0, V_{i min}–V_{i max}

mA

A

I_{inr p}

R_i

V_{i nom}

150

10

150

10

mΩ

µF

C_i

Input capacity

6.8

B ²

6.8

2.2

v_{i RFI}

EN 55011, 0.15 – 30 MHz

V_{i nom}, I_{o nom}

B ²

B ³

Class

Table 2e: Input data. General Conditions as per table 2a

Model

PSA151.5

PSA241.5

PSA361

PSA481

Unit

Characteristics

Conditions

min typ max min typ max min typ max min typ max

V_i

Operating input voltage

I_o= 0 – I_{o nom}

T_{C min}– T_{C max}

22

144 ¹31

7

144 ¹44

144 ¹58

8

144 ¹

10

V

∆V_{io min}Min. diff. voltage V_i– V_o

V_{i UVL}Undervoltage lockout

7

18 18.5

20

22

23

20

31 32

25

44

45

I_{i 0}

No load input current

Peak value of inrush current

Input resistance

I_o= 0, V_{i min}–V_{i max}

25

mA

A

I_{inr p}

R_i

V_{i nom}

150

10

150

10

150

10

150

10

mΩ

µF

C_i

Input capacity

2.2

B ³

2.2

B ³

2.2

B ³

2.2

B ³

v_{i RFI}

EN 55011, 0.15 – 30 MHz

V_{i nom}, I_{o nom}

Class

1

Surges up to 156 V for 2 s

With C_e= 470 µF/ 100 V and input filter FP80; see Accessories

With C_e= 2 × 3.3 µF / 250 V MKT and input filter FP144; see Accessories

2

3

External Input Circuitry

The sum of the lengths of the supply lines to the source or to

the nearest capacitor ≥100 µF (a + b) should not exceed 5 m,

unless option L is fitted. This option is recommended in order

to prevent power line oscillations and reduce superimposed

interference voltages.

04016a

Vo+

Vi+

Gi–

+

a

b

Go–

Fig. 2

Switching regulator with long supply lines.

MELCHER

The Power Partners.

BCD20025-G Rev AE, 13-Jul-2017

Page 5 of 15

PSA/PSR Series Data Sheet

Positive Switching Regulators

Electrical Output Data

General conditions:

– T_A= 25 °C, unless T_Cis specified

– R-input open (or V_oset to V_{o nom}with option P)

Table 3a: Output data

Model

PSA55

PSA5A5

PSR54

PSA5A2

Unit

Characteristics

Conditions

min typ max min typ max min typ max min typ max

V_o

I_io

Output voltage¹

V_{i nom}, I_{o nom}

4.97

0

5.03 5.05

5.0

6.5 5.0

20 50

5.15 4.97

5.0

5.03 5.05

4.0

5.2 2.0

15 40

5.15

2.0

V

A

Output current

V_{i min}–V_{i max}

T_{C min}– T_{C max}

0

I_oL

v_o

Output current limitation

5.0

6.5 4.0

70

2.6

Output

voltage

noise

Switching frequ.

Total

V_{i nom}, I_{o nom}

IEC/EN 61204

BW = 20 MHz

40 mV_pp

60

24 70

100

19 60

∆V_{o V}Static line regulation

V_{i min}– V_{i max}, I_{o nom}

V_{i nom,}I_o= 0 – I_{o nom}

30 40

20 25

250

40

25

30 40

10 45

200

40

20

mV

∆V_{o I}

v_{o d}

t_d

Static load regulation

Dynamic

voltage

Voltage deviation V_{i nom}

300

100

300

100

1

I_{o nom}↔ /

3

I_{o nom}

40

µs

Recovery time

regulation

IEC/EN 61204

α_Vo

Temperature coefficient

∆V_o/∆T_C(T_{C min}– T_{C max}

V_{i min}–V_{i max}

I_o= 0 – I_{o nom}

±0.02

±0.02 %/K

)

Table 3b: Output data

Model

PSA123

typ

PSA153

typ

PSA242.5

typ

Unit

max

Characteristics

Conditions

min

11.9

0

max min

max

15.1

3.0

min

23.8

0

V_o

I_o

Output voltage¹

V_{i nom}, I_{o nom}

12.1 14.9

24.2

2.5

V

A

Output current

V_{i min}– V_{i max}

T_{C min}– T_{C max}

3.0

3.9

90

0

I_oL

v_o

Output current limitation

3.0

3.9

2.5

3.25

150

170

Output

voltage

noise

Switching frequ. V_{i nom}, I_{o nom}

110

150

mV_pp

mV

IEC/EN 61204

BW = 20 MHz

Total

110

∆V_{o V}

∆V_{o l}

v_{o d}

Static line regulation

Static load regulation

V_{i min}– V_{i max}, I_{o nom}

V_{i nom}, I_o= 0 – I_{o nom}

70

40

85

60

180

140

Dynamic

load

regulation

Voltage deviat.

Recovery time

V_{i nom}

I_{o nom}↔ /

360

120

450

120

720

160

1

3

I_{o nom}

t_d

µs

IEC/EN 61204

α_Vo

Temperature coefficient

∆V_o/∆T_C(T_{C min}– T_{C max}

V_{i min}– V_{i max}

I_o= 0 – I_{o nom}

±0.02

±0.02 %/K

)

1

Models with option R, but without option Y, are adjusted to 108% of V_{o nom}. Models with option P are preadjusted to 108% of V_{o nom}

.

MELCHER

The Power Partners.

BCD20025-G Rev AE, 13-Jul-2017

Page 6 of 15

PSA/PSR Series Data Sheet

Positive Switching Regulators

Table 3c: Output data. Gerneral conditions as per table 3a

Model

PSR52

typ

PSR53

typ

PSR122.5

typ

Unit

Characteristics

Conditions

V_{i nom}, I_{o nom}

V_{i min}– V_{i max}

min

4.97

0

max min

max

5.03

3.0

3.9

60

min

11.9

0

max

12.1

2.5

V_o

I_o

Output voltage¹

5.03 4.97

V

A

Output current

2.0

2.6

40

0

T

_{C min}– T_{C max}

I_oL

v_o

Output current limitation

2.0

3.0

2.5

3.25

70

Output

voltage

noise

Switching frequ. V_{i nom}, I_{o nom}

20

24

20

24

30

35

mV_pp

mV

IEC/EN 61204

BW = 20 MHz

Total

60

80

90

∆V_{o V}

∆V_{o l}

v_{o d}

Static line regulation

Static load regulation

V_{i min}– V_{i max}, I_{o nom}

V_{i nom}, I_o= 0 – I_{o nom}

30

20

40

25

30

20

45

25

30

45

40

Dynamic

load

regulation

Voltage deviat.

Recovery time

V_{i nom}

I_{o nom}↔ /

100

50

100

50

180

60

1

3

I_{o nom}

t_d

µs

IEC/EN 61204

α_Vo

Temperature coefficient

∆V_o/∆T_C(T_{C min}– T_{C max}

V_{i min}– V_{i max}

I_o= 0 – I_{o nom}

±0.02

±0.02 %/K

)

Table 3d: Output data. Gerneral conditions as per table 3a

Model

PSR152.5

PSR242

PSR362

PSA121.5

Unit

Characteristics

Conditions

min typ max min typ max min typ max min typ max

V_o

I_io

Output voltage¹

V_{i nom}, I_{o nom}

14.91

0

15.09 23.86

2.5

3.25 2.0

40 110

50 150

24.14 35.78

2.0

2.6 2.0

30 150

36.22 11.93

2.0

2.6 1.5

80 200

12.07

1.5

V

A

Output current

V_{i min}–V_{i max}

T_{C min}– T_{C max}

0

I_oL

v_o

Output current limitation

2.5

1.9

Output

voltage

noise

Switching frequ.

Total

V_{i nom}, I_{o nom}

IEC/EN 61204

BW = 20 MHz

20

24

40 mV_pp

50

40 170

85 220

∆V_{o V}Static line regulation

V_{i min}– V_{i max}, I_{o nom}

V_{i nom,}I_o= 0 – I_{o nom}

70

40

85

50

60 220

90 160

210

200 250

125 160

250

20

50

80

30

mV

∆V_{o I}

v_{o d}

t_d

Static load regulation

Dynamic

voltage

Voltage deviation V_{i nom}

180

60

1

I_{o nom}↔ /

3

I_{o nom}

80

100

µs

Recovery time

regulation

IEC/EN 61204

α_Vo

Temperature coefficient

V_{i min}–V_{i max}

I_o= 0 – I_{o nom}

±0.02

±0.02 %/K

∆V_o/∆T_C(T_{C min}– T_{C max}

)

Table 3e: Output data. Gerneral conditions as per table 3a

Model

PSA151.5

PSA241.5

PSA361

PSA481

Unit

Characteristics

Conditions

min typ max min typ max min typ max min typ max

V_o

I_io

Output voltage¹

V_{i nom}, I_{o nom}

14.91

0

15.09 23.86

1.5

1.9 1.5

25 50

24.14 35.78

36.22 47.71

48.29

1.0

V

A

Output current

V_{i min}–V_{i max}

T_{C min}– T_{C max}

0

1.5

1.9

0

1.2

1.5

0

I_oL

v_o

Output current limitation

1.5

1.2

1.0

1.3

Output

voltage

noise

Switching frequ.

Total

V_{i nom}, I_{o nom}

IEC/EN 61204

BW = 20 MHz

45 75

50 120

45 80

50 120

50

75 mV_pp

29 60

55 120

∆V_{o V}Static line regulation

V_{i min}– V_{i max}, I_{o nom}

V_{i nom,}I_o= 0 – I_{o nom}

40 40

20 50

50

40 80

30 40

50

80 120

40 80

200

90 120

60 100

300

mV

∆V_{o I}

v_{o d}

t_d

Static load regulation

Dynamic

voltage

Voltage deviation V_{i nom}

1

I_{o nom}↔ /

3

I_{o nom}

50

60

40

100

µs

Recovery time

regulation

IEC/EN 61204

α_Vo

Temperature coefficient

V_{i min}–V_{i max}

I_o= 0 – I_{o nom}

±0.02

±0.02 %/K

∆V_o/∆T_C(T_{C min}– T_{C max}

)

1

Models with option R, but without option Y, are adjusted to 108% of V_{o nom}. Models with option P are preadjusted to 108% of V_{o nom}

.

MELCHER

The Power Partners.

BCD20025-G Rev AE, 13-Jul-2017

Page 7 of 15

PSA/PSR Series Data Sheet

Positive Switching Regulators

after the warm-up phase, measured at the measuring point of

case temperature T_C; see Mechanical Data.

V_o

v_od

V_o1%

Under practical operating conditions, T_Amay exceed 71 °C,

provided that additional measures (heat sink, fan etc.) are

v_od

taken to ensure that T_Cdoes not exceed T_{C max}

.

t_d

Output protection and Short Circuit Behavior

t

I_o/I_{o nom}

A voltage suppressor diode, which in worst case conditions fails

into a short circuit, protects the output against an internally

generated overvoltage. Such an overvoltage could occur due to

a failure of either the control circuit or the switching transistor.

The output protection is not designed to withstand externally

applied overvoltages.

1

0.3

≥ 10 µs

t

0

05010a

A constant current limitation circuit holds the output current

almost constant, when an overload or a short circuit is applied

to the output. It acts self-protecting and recovers automatically

after removal of the overload or short-circuit condition.

Fig. 3s

Switching regulator with long supply lines.

Thermal Considerations

Parallel and Series Connection

When a switching regulator is located in free, quasi-stationary

air (convection cooling) at a temperature T_A= 71 °C and is

operated at I_{o nom}, the case temperature T_Cwill be about 95°C

Outputs of equal nominal voltages can be parallel-connected.

However, the use of a single regulator with higher output power,

is always the better solution.

I_o/I_{o nom}

In parallel-connected operation, one or several outputs may

operate continuously at their current limit knee-point which will

cause an increase of the heat generation. Consequently, the

max. ambient temperature should be reduced by 10 K.

05032a

1.0

0.9

Outputs can be series-connected with any other regulator. In

series-connection the maximum output current is limited by the

lowest current limitation, but electrically separated source

voltages are needed for each regulator.

Forced

cooling

0.8

0.7

Convection cooling

0.6

T_{C max}

0.5

0.4

0.3

0.2

0.1

V_o/V_{o nom}

05033a

1.0

0

T_A

T_{A min}

40

60

70

80 [°C]

50

0.8

I_{o L}

0.6

0.4

0.2

Fig. 4a

Output current versus temperature (models -2)

I_o/I_{o nom}

0

0.2

0.4

0.6

0.8

1.0

1.2 I_o/I_{o nom}

05031a

1.0

0.9

Fig. 5

Overload and short-circuit behavior V_oversus I_o

forced

cooling

0.8

convection cooling

0.7

T_{C max}

0.6

0.5

0.4

0.3

0.2

0.1

0

T_A

T_{A min}

50

60

70

80

90

°C

Fig. 4b

Output current versus temperature (models -7 and -9)

MELCHER

The Power Partners.

BCD20025-G Rev AE, 13-Jul-2017

Page 8 of 15

PSA/PSR Series Data Sheet

Positive Switching Regulators

Auxiliary Functions

converters, this feature can be used, for example, to control the

activation sequence of the converters by a logic signal (TTL, C-

MOS, etc.). No output voltage overshoot will occur at switch-on.

i Inhibit (Remote On / Off)

Note: With open i-pin, the output is enabled.

The inhibit input allows the switching regulator output to be

disabled via a control signal. In systems with several

LED Output Voltage Indicator

I_inh[mA]

A yellow LED indicator is illuminated, when the output voltage is

present (not for -2 models).

06010a

5

4

3

2

V_oon

V_ooff

1

0

V_inh[V]

-20

-50

-30

-10

0

-40

10 20 30 40 50

Fig. 6

Typical inhibit current I_inhversus inhibit voltage V_inh

06009a

Vo+

i

Vi+

Gi–

I_inh

V_inh

Go–

Fig. 7

Definition of I_inhand V_inh

V_o/V_{o nom}

1

06001

0.1

0

t

t_f

t_r

Inhibit

1

t

0

Fig. 8

Output response as a function of inhibit signal

Table 4: Inhibit characteristics

Characteristics

V_inhInhibit input voltage V_o= on V_{i min}– V_{i max}

_{C min}–T_{C max}

Conditions

min typ max Unit

–10

+0.8

+50

V

T

V_o= off

+2.4

t _rSwitch-on time

t _fSwitch-off time

V_i= V_{i nom}

R_L=V_{o nom}/I_onom

2

4

ms

mA

I_{i inh}Input current when inhibited V_i= V_{i nom}

10

MELCHER

The Power Partners.

BCD20025-G Rev AE, 13-Jul-2017

Page 9 of 15

PSA/PSR Series Data Sheet

Positive Switching Regulators

Electromagnetic Compatibility (EMC)

Electromagnetic Immunity

Table 5: Immunity type tests

Phenomenon

Standard

Class

Level

Coupling

mode ¹

Value

applied

Waveform

Source

Imped.

Test

procedure

In

Perf.

oper. crit. ²

3

Voltage surge ³

IEC 60571-1

i/c, +i/–i

800 V_p

1500 V_p

3000 V_p

4000 V_p

7000 V_p

100 µs

50 µs

5 µs

100 Ω

1 pos. and 1 neg.

surge per

coupling mode

yes

B

1 µs

100 ns

1/50 ns

3

4

Electrostatic

discharge⁵

IEC/EN

61000-4-2

3³

2 ⁴

contact discharge 6000 V_p

330 Ω

50 Ω

10 positive and

10 negative

discharges

B⁵

to case

antenna

i/c, +i/–i

4000 V_p

Electromagnetic IEC/EN

field

3³

2 ⁴

10 V/m³

3 V/m⁴

AM 80%

1 kHz

80 – 1000 MHz

yes

A

61000-4-3

Electrical fast

transients/burst⁵61000-4-4

IEC/EN

3³

2 ⁴

2000 V_pbursts of 5/50 ns

1000 V_p

60 s positive

60 s negative

transients per

coupling mode

A⁵

5 kHz rep. rate

transients with

15 ms burst

duration and a

300 ms period

Surges⁵

IEC/EN

61000-4-5

2³

2

i/c

1000 V_p

500 V_p

1.2/50 µs

12 Ω

2 Ω

5 pos. and 5 neg.

surges per

coupling mode

yes

B⁵

A

+i/– i

Conducted

disturbances

IEC/EN

61000-4-6

3³

2 ⁴

i, o, signal wires

10 VAC³

3 VAC⁴

AM 80%

1 kHz

150 Ω

0.15 – 80 MHz

1

i = input, o = output, c = case.

2

3

4

5

A = Normal operation, no deviation from specifications, B = Normal operation, temporary loss of function or deviation from specs possible

Not applicable for -2 models

Valid for -2 models

With the filters and input caps as specified in the foot notes of table 2

Electromagnetic Emission

For emission levels refer to Electrical Input Data.

[dBmV]

90

07012

80

EN 55022 A

EN 55022 B

70

60

50

40

30

20

10

0

Fig. 8

Typical disturbance voltage (quasi-

peak) at the input according to EN

55011, measured at V_{i nom}and I_{o nom}

MHz

.

MELCHER

The Power Partners.

BCD20025-G Rev AE, 13-Jul-2017

Page 10 of 15

PSA/PSR Series Data Sheet

Positive Switching Regulators

Immunity to Environmental Conditions

Table 6: Mechanical and climatic stress

Test method

Standard

Test conditions

Status

Cab

Ea

Fc

Damp heat

steady state

IEC/EN 60068-2-78

MIL-STD-810D section 507.2

Temperature:

Relative humidity:

Duration:

40 ^±2°C

Regulator

not

operating

93 ^+2/-3

%

56 days

Shock

(half-sinusoidal)

IEC/EN 60068-2-27

MIL-STD-810D section 516.3

Acceleration amplitude:

Bump duration:

Number of bumps:

50 g_n= 490 m/s²

11 ms

18 (3 each direction)

Regulator

operating

Vibration

(sinusoidal)

IEC/EN 60068-2-6

MIL-STD-810D section 514.3

Acceleration amplitude:

0.35 mm (10 – 60 Hz)

5 g_n= 49 m/s²(60 – 2000 Hz)

10 – 2000 Hz

Regulator

operating

Frequency (1 Oct/min):

Test duration:

7.5 h (2.5 h each axis)

Fda

Kb

Random vibration

wide band

Reproducibility

high

IEC/EN 60068-2-35

DIN 40046 part 23

Acceleration spectraldensity: 0.05 g²/Hz

Regulator

operating

Frequency band:

Acceleration magnitude:

Test duration:

20 – 500 Hz

4.9 g_{n rms}

3 h (1 h each axis)

Salt mist, cyclic

(sodium chloride

NaCl solution)

IEC/EN 60068-2-52

Concentration:

Duration:

Storage:

Storage duration:

Number of cycles:

5% (30 °C)

Regulator

not

operating

2 h per cycle

40 °C, 93% rel. humidity

22 h per cycle

3

Temperatures

Table 7: Temperature specifications, valid for an air pressure of 800 - 1200 hPa (800 - 1200 mbar)

Temperature

-2

-7 (Option)

max

-9

Unit

Characteristics

Conditions

min

–10

–25

max

50

min

–25

–40

min

–40

–55

max

T_A

T_C

T_S

Ambient temperature ¹

Regulator

operating

71

95

71

95

85

°C

Case temperature

Storage temperature ¹

80

Non operational

100

1

See Thermal Considerations

Reliability

Table 8: Typical MTBF and device hours

MTBF

Ground Benign

Ground Fixed

Ground Mobile

Device Hours¹

T_C= 40 °C

T_C= 70 °C

T_C= 50 °C

MTBF accord. to MIL-HDBK-217F

789 000 h

200 000 h

104 000 h

5 100 000 h

1

Statistical values, based on an average of 4300 working hours per year and in general field use

MELCHER

The Power Partners.

BCD20025-G Rev AE, 13-Jul-2017

Page 11 of 15

PSA/PSR Series Data Sheet

Positive Switching Regulators

20.5

6.3

Mechanical Data

Potentiometer

(option P)

Yellow

LED (not -2 models)

18.7

1.2

European

Projection

Dimensions in mm.

09015b

12.2

Go–

Vo+

i

R

Ø 4

M2.5 Mounting

screws

Gi–

Vi+

0.2

2.7

0.2

50.2

Measuring point

of case temperature

Fig. 9

Case A01,

weight 100 g,

Aluminum,

min. 5

black anodized

and self cooling

20.5

6.3

18.7

Notes:

1.2

Pin i and pin R are

only fitted if the

regulator exhibits

these options.

2.8 x 0.5

(1.0 x 0.5 option Y)

09016b

i

Vo+ Go–

R

To avoid short

Fig. 10

Footprint.

a = rectangular slots 3.0 mm × 0.7

mm (or 3.0 mm through-plated

holes)

circuits with the

board, you can use

the isolation pad

HZZ01203-G; see

Accessories.

M2.5 mounting

screws

For option Y preview through-plated

holes with 1.3 to 1.5 mm for the

pins and holes for two M 2.5

fastening screws.

Vi+

Gi–

51.4

Safety and Installation Instructions

Cleaning Liquids

In order to avoid possible damage, any penetration of cleaning

fluids must be prevented, since the power supplies are not

hermetically sealed.

Installation Instruction

Installation must strictly follow the national safety regulations

in compliance with the enclosure, mounting, creepage,

clearance, casualty, markings and segregation requirements Protection Degree

of the end-use application.

The protection degree is IP 30 (IP 20, if equipped with option P).

Check for hazardous voltages before connecting.

It applies only if the regulator is soldered to the mother board.

The input and the output circuit are not separated, i.e. the

negative path is internally interconnected.

Standards and Approvals

All switching regulators have been approved according to the

latest edition of IEC/EN60950-1 and UL/CSA 60950-1

Do not open the regulator !

Ensure that a regulator failure (e.g. by an internal short-circuit)

does not result in a hazardous condition.

The regulators have been evaluated for:

MELCHER

The Power Partners.

BCD20025-G Rev AE, 13-Jul-2017

Page 12 of 15

PSA/PSR Series Data Sheet

Positive Switching Regulators

• Building in

output against case: 1500 VDC, ≥1 s (for some PSA/PSR

models only with version V103 or higher).

• The use in a pollution degree 2 environment

These tests are performed in the factory as routine test in

accordance with EN 50514 and EN 60950.

• Connecting the input to a secondary circuit, which is subject

to a maximum transient rating of 1500 V.

The switching regulators are subject to manufacturing

surveillance in accordance with the above mentioned

standards and with ISO 9001:2008.

Railway Application

The regulators have been developed observing the railway

standards EN 50155 and EN 50121. All boards are coated with

a protective lacquer.

Isolation

Electric strength test voltage between input connected with

Description of Options

b) V_o= 0 to V_{o nom}, using R_ext1between pins R and Go–:

4000 Ω • V_o

–––––––––––

V_{o nom}– V_o

V_{o nom}• R_ext1

–-–––––––––––

R_ext1+ 4000 Ω

-9 Extended Temperature Range

R_ext1

≈

V_o≈

This option defines an extended temperature range as

specified in table 7.

c) V_o= V_{o nom}to V_{o max}, using R_ext2between pins R and Go–:

4000 Ω • V_o• (V_{o nom}– 2.5 V)

––––––––––––––––––––––––––––––

≈

R_ext2

R

Control (Output Voltage Adjust)

2.5 V • (Vo – Vo nom)

Note: With open R input, V_o≈ V_{o nom}

.

V_{o nom}• 2.5 V • R_ext2

2.5 V • (R_ext2+ 4000 Ω) –V_{o nom}• 4000 Ω

––––––––––––––––––––––––––––––––––––––––

V_o≈

JM078

Vi+

Vo+

R

Caution: To prevent damage, R_ext2should never be less than

47 kΩ.

R_ext2

V_ref= 2.5 V

4 kΩ

Note: With option R, the ouput voltage V_ois adjusted to 108% of

V_{o nom}, if the regulator doesn’t have option Y in addition.

+

–

Control

logic

V_ext

R_ext1

P

Potentiometer

Option P excludes R function; the R-input (pin 16) should be left

open-circuit. The output voltage V_ocan be adjusted in the range

Gi–

Go–

90 – 108% of V_{o nom}

.

Fig. 11

However, the minimum differential voltage ∆V_{i o min}between

input and output specified in Electrical Input Data must be

observed.

Voltage adjustment via R-input

The output voltage V_ocan either be adjusted with an external

voltage source (V_ext) or with an external resistor (R₁or R₂). The

adjustment range is 0 – 108% of V_{o nom}. The minimum

differential voltage ∆V_{io min}between input and output (see

Electrical Input Data) should be maintained.

Note: Option P is not recommended, if several regulators are

operated in parallel connection.

Y

Solder Pins

Models with rectangular pins 1.0 × 0.5 mm (length 6.5 mm).

Such regulators can be fitted to PCB boards (through-plated

holes with 1.3 to 1.5 mm).

a) V_o= 0 – V_{o max}, using V_extbetween pins R and Go–:

V_o

V_ext

–––––

V_{o nom}

–––––

2.5 V

V_ext≈ 2.5 V •

V_o≈ V_{o nom}•

Caution: To prevent damage, V_extshould not exceed 20 V, nor

be negative.

G

RoHS Compliance

Models with G are RoHS-compliant for all six substances.

MELCHER

The Power Partners.

BCD20025-G Rev AE, 13-Jul-2017

Page 13 of 15

PSA/PSR Series Data Sheet

Positive Switching Regulators

Accessories

A variety of electrical and mechanical accessories are

available including:

• Filters and ring core chockes for ripple and interference

reduction; see table 9.

• Tags and isolation pads for easy and safe PCB-mounting

• Adapters for chassis and DIN-rail mounting

Fig. 13

Different

filters

Isolation Pads for PCB Mounting

Input filters

In applications, where PCB mounting converters are placed on

top of double sided boards, the use of an isolation pad is

recommended. This fibre foil avoids short circuits and provide

excellent protection against possible damage to tracks.

Different input filters are available; see table 9.

JM079

Part number:

HZZ01203-G

1

2

Vo+

Vi+

Gi–

FP filter

3

V_i

PSA/PSR

V_o

R_L

Go–

50

25

20.5

18.7

Fig. 14

Connection of the FP filter

6.3

European

Projection

1.2

JM105

1

16.6

4

0.5

6.8

25

12016a

3

positioning

min. 4.5

1

2

positioning

4

Fig. 12

0.5

1

(3.22)

Isolation pad HZZ01203-G

(ISOLATIONA,A01)

0.3 mm thick

5.08 5.08

3.22

Fig. 15

Mechanical data of the FP filter.

Weight approx. 30 g

Table 9: Input filters FP. T_A= 25°C unless otherwise specified

Characteristics

Conditions

FP 38 ²

typ

FP 80

typ

FP 144

typ

Unit

min

max min

max

I_Fn

V _Fn

R_F

L_o

Rated current ¹

L = 0.75 L_o

4

2

A

Rated voltage

T_{C min}– T_{C max}

5

40

22

5

80

22

15

90

144

100

112

95

VDC

mΩ

µH

Ohmic resistance

No load inductance

Ambient temperature

Case temperature

Storage temperature

18

20

34

18

20

34

95

I_L= 0, T_{C min}– T_{C max}

I_F= I_Fn

30

38

30

38

88

100

T_A

–40

80

–40

80

–40

–55

°C

T_C

T_S

92

98

100

1

2

For currents I_F> 4 A the following derating takes place: T_{A max}= 100 – 1.3 • I_F[°C], T_{C max}= 100 – 0.49 • I_F[°C].

FP 38 is obsolete.

MELCHER

The Power Partners.

BCD20025-G Rev AE, 13-Jul-2017

Page 14 of 15

PSA/PSR Series Data Sheet

Positive Switching Regulators

Mounting Supports

Different mounting supports for DIN-rail and chassis mountig

are described in the Mounting Supports data sheet BCD.20007

posted on our web site. They also allow for fitting additional

components.

Fig. 16

Adapter for chassis mounting

For additional accessory product information, see the

accessory data sheets listed with each product series at

our web site.

NUCLEAR AND MEDICAL APPLICATIONS - These products are not designed or intended for use as critical components in life support systems,

equipment used in hazardous environments, or nuclear control systems.

TECHNICAL REVISIONS - The appearance of products, including safety agency certifications pictured on labels, may change depending on the

date manufactured. Specifications are subject to change without notice.

belfuse.com/power-solutions

MELCHER

The Power Partners.

BCD20025-G Rev AE, 13-Jul-2017

Page 15 of 15


型号：	PSR152.5-7IR
厂家：	BEL FUSE INC.
描述：	DC-DC Regulated Power Supply Module, 1 Output, 37.5W, Hybrid, METAL, CASE A01, MODULE-6
文件：	总15页 (文件大小：772K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

PSR152.5-7IR [BEL]

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