OP-4-70V-48V-Q 34-135V Input, 48V/2.7A Output Quarter-brick

OP-4-70V-48V-Q

OP-4-70V-48V-Q 34-135V Input, 48V/2.7A Output Quarter-brick

Property

Value

Maximum Input Current (Max.)

5.7 A

Maximum Input Current (Notes & Conditions)

Vin min; trim up; in current limit

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

80 mA

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

100 mA

Disabled Input Current (Typ.)

2 mA

Disabled Input Current (Max.)

4 mA

Response to Input Transient (Typ.)

1.2 V

Response to Input Transient (Notes & Conditions)

See Figure 6

Input Terminal Ripple Current (Typ.)

370 mA

Input Terminal Ripple Current (Notes & Conditions)

RMS

Recommended Input Fuse (Max.)

10 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

Over Line (Typ.)

+/-0.1 %

Over Line (Max.)

+/-0.3 %

Over Load (Typ.)

+/-0.1 %

Over Load (Max.)

+/-0.3 %

Over Temperature (Min.)

-720 mV

Over Temperature (Max.)

720 mV

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

Peak-to-Peak (Typ.)

130 mV

Peak-to-Peak (Max.)

260 mV

Peak-to-Peak (Notes & Conditions)

Full load

RMS (Typ.)

30 mV

RMS (Max.)

60 mV

RMS (Notes & Conditions)

Full load

Operating Output Current Range (Min.)

0 A

Operating Output Current Range (Max.)

2.7 A

Operating Output Current Range (Notes & Conditions)

Subject to thermal derating

Output DC Current Limit Inception (Min.)

3.0 A

Output DC Current Limit Inception (Typ.)

3.2 A

Output DC Current Limit Inception (Max.)

3.5 A

Output DC Current Limit Inception (Notes & Conditions)

Output voltage 10 % Low

Output DC Current Limit Shutdown Voltage (Typ.)

32 V

Back-Drive Current Limit while Enabled (Typ.)

0.115 A

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

Negative current drawn into output pins

Back-Drive Current Limit while Disabled (Typ.)

1 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)

Settling Time (Typ.)

500 us

Settling Time (Notes & Conditions)

To within 1 % Vout nom

Output Voltage Trim Range (Min.)

-20 %

Output Voltage Trim Range (Max.)

10 %

Output Voltage Trim Range (Notes & Conditions)

Across Pins 8 & 4; Common Figures 3-5

Output Voltage Remote Sense Range (Max.)

10 %

Output Voltage Remote Sense Range (Notes & Conditions)

Across Pins 8 & 4

Output Over-Voltage Protection (Min.)

56.2 V

Output Over-Voltage Protection (Typ.)

58.6 V

Output Over-Voltage Protection (Max.)

61.0 V

Output Over-Voltage Protection (Notes & Conditions)

Over full temp range

100 % Load (Typ.)

89 %

100 % Load (Notes & Conditions)

See Figure 1 for efficiency curve

50 % Load (Typ.)

90 %

50 % Load (Notes & Conditions)

See Figure 1 for efficiency curve

Operating Input Voltage Range (Min.)

34 V

Operating Input Voltage Range (Typ.)

70 V

Operating Input Voltage Range (Max.)

135 V

Turn-On Voltage Threshold (Min.)

32.6 V

Turn-On Voltage Threshold (Typ.)

32.9 V

Turn-On Voltage Threshold (Max.)

33.8 V

Turn-Off Voltage Threshold (Min.)

30.4 V

Turn-Off Voltage Threshold (Typ.)

30.7 V

Turn-Off Voltage Threshold (Max.)

31 V

Lockout Voltage Hysteresis (Typ.)

2.2 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.)

4.71.5 uHuF

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

Internal values

Non-Operating (Min.)

-1 V

Non-Operating (Max.)

150 V

Non-Operating (Notes & Conditions)

Continuous

Operating (Max.)

135 V

Operating (Notes & Conditions)

Continuous

Operating Transient (Units)

V

Input to Output (Max.)

3000 Vdc

Input to Baseplate (Max.)

3000 Vdc

Output to Baseplate (Max.)

3000 Vdc

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.)

18 V

Turn-On Time (Typ.)

10 ms

Turn-On Time (Notes & Conditions)

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

Start-Up Inhibit Time (Min.)

180 ms

Start-Up Inhibit Time (Typ.)

200 ms

Start-Up Inhibit Time (Max.)

220 ms

Start-Up Inhibit Time (Notes & Conditions)

-40 °C to +125 °C; 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 (Min.)

100 M Ohm

Isolation Resistance (Notes & Conditions)

500V EN 60255-5

Isolation Capacitance (input to output) (Typ.)

1000 pF

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

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 (Min.)

230 kHz

Switching Frequency (Typ.)

250 kHz

Switching Frequency (Max.)

270 kHz

Switching Frequency (Notes & Conditions)

Same for the isolation stage

Off-State Voltage (Min.)

2.4 V

Off-State Voltage (Max.)

18 V

On-State Voltage (Min.)

-2 V

On-State Voltage (Max.)

0.8 V

Pull-Up Voltage (Typ.)

5 V

Pull-Up Resistance (Typ.)

50 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.)

1.49 10^6 Hrs.

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

Tb = 70 °C

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

1.31 10^6 Hrs.

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

Tb = 70 °C

Output Voltage Ripple and Noise (Notes & Conditions)

20 MHz bandwidth

ON/OFF Control (Notes & Conditions)

Application notes Figures A & B

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

1500 mV

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

50 % to 75 % to 50 % Iout max

Features

High efficiency (up to 91%) with minimal derating for reliable full-power operation.

Wide 34-135 V input voltage range with high-precision output voltage trim and remote sensing.

Fixed frequency switching architecture for predictable EMI performance and simplified filtering.

Comprehensive protection suite including thermal shutdown, short circuit, over-voltage, and UVLO.

Industry-standard Quarter-brick form factor with optional flanged baseplate for flexible mounting.

Robust operation with no minimum load requirements and active back-drive current limiting.

Certified compliance with UL/CSA/EN 60950-1 safety standards, CE marking, and RoHS directives.

Applications

Industrial and Transportation applications