OP-4-18V-48V-S 9-36 V Input, 48 V/1.04 A Output Sixteenth-brick

OP-4-18V-48V-S

OP-4-18V-48V-S 9-36 V Input, 48 V/1.04 A Output Sixteenth-brick

Property

Value

Maximum Input Current (Max.)

10 A

Maximum Input Current (Notes & Conditions)

Vin min; trim up; in current limit

No-Load Input Current (enabled) (Typ.)

130 mA

No-Load Input Current (enabled) (Max.)

180 mA

Disabled Input Current (Typ.)

10 mA

Disabled Input Current (Max.)

15 mA

Response to Input Transient (Typ.)

0.3 V

Response to Input Transient (Notes & Conditions)

250 V/ms

Input Terminal Ripple Current (Typ.)

100 mA

Input Terminal Ripple Current (Notes & Conditions)

RMS

Recommended Input Fuse (Max.)

20 A

Recommended Input Fuse (Notes & Conditions)

Fast acting fuse recommended

Output Voltage Set Point (Min.)

47.52 V

Output Voltage Set Point (Typ.)

48.00 V

Output Voltage Set Point (Max.)

48.48 V

Total Output Voltage Range (Min.)

46.80 V

Total Output Voltage Range (Max.)

49.20 V

Total Output Voltage Range (Notes & Conditions)

Over sample, line, load, temperature & life

Operating Output Current Range (Min.)

0 A

Operating Output Current Range (Max.)

1.04 A

Operating Output Current Range (Notes & Conditions)

Subject to thermal derating

Output DC Current Limit Inception (Min.)

1.12 A

Output DC Current Limit Inception (Typ.)

1.36 A

Output DC Current Limit Inception (Max.)

1.60 A

Output DC Current Limit Inception (Notes & Conditions)

Output voltage 10 % Low

Back-Drive Current Limit while Enabled (Typ.)

0.5 A

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

Negative current drawn into output pins

Back-Drive Current Limit while Disabled (Typ.)

20 mA

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

Negative current drawn into output pins

Maximum Output Capacitance (Max.)

100 uF

Maximum Output Capacitance (Notes & Conditions)

Vout nominal at full load (resistive load)

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.)

54 V

Output Over-Voltage Protection (Typ.)

62 V

Output Over-Voltage Protection (Max.)

65 V

Output Over-Voltage Protection (Notes & Conditions)

Over full temp range

100 % Load (Typ.)

84.5 %

100 % Load (Notes & Conditions)

See Figure 1 for efficiency curve

50 % Load (Typ.)

85.5 %

50 % Load (Notes & Conditions)

See Figure 1 for efficiency curve

Operating Input Voltage Range (Min.)

9 V

Operating Input Voltage Range (Typ.)

18 V

Operating Input Voltage Range (Max.)

36 V

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.)

0.474.4 uH uF

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

Internal values

Operating Temperature (Min.)

-40 °C

Operating Temperature (Max.)

100 °C

Operating Temperature (Notes & Conditions)

Baseplate temperature

Storage Temperature (Min.)

-45 °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.)

50 ms

Turn-On Time (Notes & Conditions)

Full load, Vout = 90 % nom. (from enable)

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)

See App Section Figure E

Power-Up Inhibit Time (Typ.)

15 ms

Power-Up Inhibit Time (Notes & Conditions)

See App Section Figure E

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 2

Semiconductor Junction Temperature (Max.)

125 °C

Semiconductor Junction Temperature (Notes & Conditions)

Package rated to 150 °C

PCB Temperature (Max.)

125 °C

PCB 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)

613kHz for 48V

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.)

4.2 10^6 Hrs.

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

Tb = 70 °C

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

0.8 10^6 Hrs.

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

Tb = 70 °C

Output Voltage Regulation Over Line (Typ.)

+/-0.1 %

Output Voltage Regulation Over Line (Max.)

+/-0.3 %

Output Voltage Regulation Over Load (Typ.)

+/-0.1 %

Output Voltage Regulation Over Load (Max.)

+/-0.3 %

Output Voltage Regulation Over Temperature (Min.)

-720 mV

Output Voltage Regulation Over Temperature (Max.)

720 mV

Output Voltage Ripple and Noise Peak-to-Peak (Min.)

0 mV

Output Voltage Ripple and Noise Peak-to-Peak (Typ.)

75 mV

Output Voltage Ripple and Noise Peak-to-Peak (Max.)

150 mV

Output Voltage Ripple and Noise Peak-to-Peak (Notes & Conditions)

Full load; 20 MHz bandwidth

Output Voltage Ripple and Noise RMS (Typ.)

20 mV

Output Voltage Ripple and Noise RMS (Max.)

40 mV

Output Voltage Ripple and Noise RMS (Notes & Conditions)

Full load

Output Voltage during Load Current Transient Step Change (0.1 A/ us) (Typ.)

400 mV

Output Voltage during Load Current Transient Step Change (0.1 A/ us) (Notes & Conditions)

50 % to 75 % to 50 % Iout max

Output Voltage during Load Current Transient Settling Time (Typ.)

600 us

Output Voltage during Load Current Transient Settling Time (Notes & Conditions)

To within 1 % Vout nom

Input Under-Voltage Lockout Turn-On Voltage Threshold (Min.)

8.5 V

Input Under-Voltage Lockout Turn-On Voltage Threshold (Typ.)

8.8 V

Input Under-Voltage Lockout Turn-On Voltage Threshold (Max.)

9.1 V

Input Under-Voltage Lockout Turn-Off Voltage Threshold (Min.)

8.0 V

Input Under-Voltage Lockout Turn-Off Voltage Threshold (Typ.)

8.3 V

Input Under-Voltage Lockout Turn-Off Voltage Threshold (Max.)

8.6 V

Input Under-Voltage Lockout Lockout Voltage Hysteresis (Typ.)

0.5 V

Input Voltage Non-Operating (Min.)

-1 V

Input Voltage Non-Operating (Max.)

50 V

Input Voltage Non-Operating (Notes & Conditions)

Continuous

Input Voltage Operating (Max.)

36 V

Input Voltage Operating (Notes & Conditions)

Continuous

Input Voltage Operating Transient (Max.)

40 V

Input Voltage Operating Transient (Notes & Conditions)

1 s

Isolation Voltage Input to Output (Max.)

2250 Vdc

Isolation Voltage Input to Baseplate (Max.)

2250 Vdc

Isolation Voltage Output to Baseplate (Max.)

2250 Vdc

ON/OFF Control Off-State Voltage (Min.)

1.4 V

ON/OFF Control Off-State Voltage (Max.)

8 V

ON/OFF Control On-State Voltage (Min.)

-2 V

ON/OFF Control On-State Voltage (Max.)

0.8 V

ON/OFF Control Pull-Up Voltage (Typ.)

5 V

ON/OFF Control Pull-Up Voltage (Notes & Conditions)

Application notes Figures A & B

ON/OFF Control Pull-Up Resistance (Typ.)

82.5 k Ohm

Features

High operating efficiency up to 86% with minimal power derating across the rated load.

Versatile 9-36V input range in a compact, industry-standard sixteenth-brick form factor.

Fixed-frequency switching architecture for predictable EMI and stable operation with no minimum load.

Enhanced output control via remote sensing, wide voltage trim range, and input-referenced On/Off logic.

Integrated safety suite including input UVLO/OV, output over-voltage, short circuit, and thermal protection.

Robust mechanical design featuring active back-drive current limiting and an optional flanged baseplate.

Full compliance with UL/CSA/EN 62368-1 safety standards and RoHS environmental regulations.

Applications

Industrial and Transportation applications