OP-2-48V-28V-S 34-75 V Input, 28 V/1.8 A Output Sixteenth-brick

OP-2-48V-28V-S

OP-2-48V-28V-S 34-75 V Input, 28 V/1.8 A Output Sixteenth-brick

Property

Value

Maximum Input Current (Max.)

2.1 A

Maximum Input Current (Notes & Conditions)

Vin min; trim up; in current limit

No-Load Input Current (Typ.)

70 mA

No-Load Input Current (Max.)

90 mA

Disabled Input Current (Typ.)

10 mA

Disabled Input Current (Max.)

14 mA

Response to Input Transient (Typ.)

340 mV

Response to Input Transient (Notes & Conditions)

See Figure 6

Input Terminal Ripple Current (Typ.)

70 mA

Input Terminal Ripple Current (Notes & Conditions)

RMS

Recommended Input Fuse (Max.)

20 A

Recommended Input Fuse (Notes & Conditions)

Fast acting external fuse recommended

Output Voltage Set Point (Min.)

27.72 V

Output Voltage Set Point (Typ.)

28.00 V

Output Voltage Set Point (Max.)

28.28 V

Over Line (Typ.)

+/-0.1 %

Over Line (Max.)

+/-0.3 %

Over Load (Typ.)

+/-0.1 %

Over Load (Max.)

+/-0.3 %

Over Temperature (Min.)

-420 mV

Over Temperature (Max.)

420 mV

Total Output Voltage Range (Min.)

27.30 V

Total Output Voltage Range (Max.)

28.70 V

Total Output Voltage Range (Notes & Conditions)

Over sample, line, load, temperature & life

Output Voltage Ripple and Noise (Notes & Conditions)

20 MHz bandwidth

Peak-to-Peak (Min.)

0 mV

Peak-to-Peak (Typ.)

90 mV

Peak-to-Peak (Max.)

180 mV

Peak-to-Peak (Notes & Conditions)

Full load

RMS (Typ.)

25 mV

RMS (Max.)

50 mV

RMS (Notes & Conditions)

Full load

Operating Output Current Range (Min.)

0 A

Operating Output Current Range (Max.)

1.8 A

Operating Output Current Range (Notes & Conditions)

Subject to thermal derating

Output DC Current-Limit Inception (Min.)

1.9 A

Output DC Current-Limit Inception (Typ.)

2.2 A

Output DC Current-Limit Inception (Max.)

2.6 A

Output DC Current-Limit Inception (Notes & Conditions)

Output voltage 20% Low

Output DC Current-Limit Shutdown Voltage (Typ.)

22.4 V

Back-Drive Current Limit while Enabled (Typ.)

0.5 A

Back-Drive Current Limit while Enabled (Notes & Conditions)

Negative current drawn from output

Back-Drive Current Limit while Disabled (Typ.)

5 mA

Back-Drive Current Limit while Disabled (Notes & Conditions)

Negative current drawn from output

Maximum Output Capacitance (Max.)

500 uF

Maximum Output Capacitance (Notes & Conditions)

Vout nominal at full load (resistive load)

Settling Time (Typ.)

200 us

Settling Time (Notes & Conditions)

To within 1% Vout nom

Output Voltage Trim Range (Min.)

-10 %

Output Voltage Trim Range (Max.)

10 %

Output Voltage Trim Range (Notes & Conditions)

Across Pins 8&4; Common Figures 2-4

Output Voltage Remote Sense Range (Max.)

10 %

Output Voltage Remote Sense Range (Notes & Conditions)

Across Pins 8&4

Output Over-Voltage Protection (Min.)

33.6 V

Output Over-Voltage Protection (Typ.)

36.4 V

Output Over-Voltage Protection (Max.)

37.8 V

Output Over-Voltage Protection (Notes & Conditions)

Over full temp range

100% Load (Typ.)

85.5 %

100% Load (Notes & Conditions)

See Figure 1 for efficiency curve

50% Load (Typ.)

84 %

50% Load (Notes & Conditions)

See Figure 1 for efficiency curve

Operating Input Voltage Range (Min.)

34 V

Operating Input Voltage Range (Typ.)

48 V

Operating Input Voltage Range (Max.)

75 V

Turn-On Voltage Threshold (Min.)

31.2 V

Turn-On Voltage Threshold (Typ.)

32.5 V

Turn-On Voltage Threshold (Max.)

33.9 V

Turn-Off Voltage Threshold (Min.)

29.6 V

Turn-Off Voltage Threshold (Typ.)

31 V

Turn-Off Voltage Threshold (Max.)

32.2 V

Lockout Voltage Hysteresis (Typ.)

1.5 V

Input Over-Voltage Shutdown (Typ.)

– V

Input Over-Voltage Shutdown (Notes & Conditions)

Not Available

Recommended External Input Capacitance (Typ.)

100 uF

Recommended External Input Capacitance (Notes & Conditions)

Typical ESR 0.1-0.2 Ohm

Input Filter Component Values (LC) (Typ.)

1/3.94 uH uF

Input Filter Component Values (LC) (Notes & Conditions)

Internal values

Non-Operating (Max.)

100 V

Non-Operating (Notes & Conditions)

Continuous

Operating (Max.)

75 V

Operating (Notes & Conditions)

Continuous

Operating Transient Protection (Max.)

100 V

Isolation Voltage (Notes & Conditions)

Reinforced insulation

Input to Output (Max.)

2250 V dc

Input to Baseplate (Max.)

2250 V dc

Output to Baseplate (Max.)

2250 V dc

Operating Temperature (Min.)

-40 °C

Operating Temperature (Max.)

100 °C

Operating Temperature (Notes & Conditions)

Baseplate temperature

Storage Temperature (Min.)

-55 °C

Storage Temperature (Max.)

125 °C

Voltage at ON/OFF input pin (Min.)

-2 V

Voltage at ON/OFF input pin (Max.)

8 V

Turn-On Time (Typ.)

40 ms

Turn-On Time (Notes & Conditions)

Full load, Vout=90% nom.

Start-Up Inhibit Time (Min.)

100 ms

Start-Up Inhibit Time (Typ.)

120 ms

Start-Up Inhibit Time (Max.)

150 ms

Start-Up Inhibit Time (Notes & Conditions)

Figure F

Output Voltage Overshoot (Typ.)

0 %

Output Voltage Overshoot (Notes & Conditions)

Maximum Output Capacitance

Isolation Voltage (dielectric strength) (Notes & Conditions)

See Absolute Maximum Ratings

Isolation Resistance (Typ.)

30 M Ohm

Isolation Capacitance (input to output) (Notes & Conditions)

See Note 1

Semiconductor Junction Temperature (Max.)

125 °C

Semiconductor Junction Temperature (Notes & Conditions)

Package rated to 150 °C

Board Temperature (Max.)

125 °C

Board Temperature (Notes & Conditions)

UL rated max operating temp 130 °C

Transformer Temperature (Max.)

125 °C

Maximum Baseplate Temperature, Tb (Max.)

100 °C

Switching Frequency (Typ.)

500 kHz

Switching Frequency (Notes & Conditions)

Isolation stage switching freq. is half

Off-State Voltage (Min.)

1.5 V

Off-State Voltage (Max.)

8 V

On-State Voltage (Min.)

-2 V

On-State Voltage (Max.)

1 V

ON/OFF Control (Notes & Conditions)

Application notes Figures A & B

Pull-Up Voltage (Typ.)

5 V

Pull-Up Resistance (Typ.)

82.5 k Ohm

Over-Temperature Shutdown OTP Trip Point (Typ.)

125 °C

Over-Temperature Shutdown OTP Trip Point (Notes & Conditions)

Average PCB Temperature

Over-Temperature Shutdown Restart Hysteresis (Typ.)

10 °C

Calculated MTBF (Telcordia) TR-NWT-000332 (Typ.)

3.80 10^6 Hrs.

Calculated MTBF (Telcordia) TR-NWT-000332 (Notes & Conditions)

Tb = 70 °C

Calculated MTBF (MIL-217) MIL-HDBK-217F (Typ.)

0.68 10^6 Hrs.

Calculated MTBF (MIL-217) MIL-HDBK-217F (Notes & Conditions)

Tb = 70 °C

Step Change in Output Current (0.1 A/us) (Typ.)

550 mV

Step Change in Output Current (0.1 A/us) (Notes & Conditions)

50% to 75% to 50% Iout max

Features

High efficiency operation (87% at full load) with minimal derating and no external heatsink requirement.

Wide 34-75V input voltage range with fixed-frequency switching for predictable EMI performance.

Industry-standard sixteenth-brick form factor with a compact footprint and optional flanged baseplate.

Advanced control features including remote sense, input-referenced On/Off, and +/-10% output voltage trim.

Comprehensive protection suite featuring input UVLO/OVLO, output current limit, short-circuit protection, and thermal shutdown.

Reliable performance with no minimum load requirement and integrated active back bias limiting.

Fully certified to UL/CSA/EN 62368-1 safety standards and RoHS compliant for global applications.

Applications

Industrial and Transportation applications