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Mean Well

Mean Well HRPG-450-3.3 Power Supply 297W 3.3V 90A

built-in active PFCPF > 0.95high efficiency up to 90%no load power consumption <0.5W~0.75W1U low profile
SKU HRPG-450-3.3
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Overview

HRPG-450-3.3 is the 3.3V output model of this series: rated current 90A, rated power 297W, typical efficiency 80%.

Features

  • Universal AC input / Full range
  • Built-in active PFC function, PF>0.95
  • High efficiency up to 89.5%
  • Withstand 300VAC surge input for 5 seconds
  • Protections: Short circuit / Overload / Over voltage / Over temperature
  • Built-in constant current limiting circuit
  • Built-in cooling Fan ON-OFF control
  • Built-in DC OK signal
  • Built-in remote ON-OFF control
  • Stand by 5V@0.3A
  • Built-in remote sense function
  • No load power consumption<0.5W (Note.7)
  • 5 years warranty

Specifications

HRPG-450-3.3Specifications from the official datasheet (2025-12-05 edition)

OUTPUT

DC VOLTAGE
3.3V
RATED CURRENT
90A
CURRENT RANGE
0 ~ 90A
RATED POWER
297W
RIPPLE & NOISE (max.)Note.2
80mVp-p
VOLTAGE ADJ. RANGE
2.8 ~ 3.8V
VOLTAGE TOLERANCENote.3
±2.0%
LINE REGULATION
±0.5%
LOAD REGULATION
±1.0%
SETUP, RISE TIME
1800ms, 100ms/230VAC 3600ms, 100ms/115VAC at full load
HOLD UP TIME (Typ.)
16ms/230VAC 16ms/115VAC at full load

INPUT

VOLTAGE RANGENote.5
85 ~ 264VAC 120 ~ 370VDC
FREQUENCY RANGE
47 ~ 63Hz
POWER FACTOR (Typ.)
PF>0.95/230VAC PF>0.99/115VAC at full load
EFFICIENCY (Typ.)
80%
AC CURRENT (Typ.)
5A/115VAC 2.4A/230VAC
INRUSH CURRENT (Typ.)
35A/115VAC 70A/230VAC
LEAKAGE CURRENT
<1.5mA / 240VAC

PROTECTION

OVERLOAD
105 ~ 135% rated output power Protection type : Constant current limiting, recovers automatically after fault condition is removed
OVER VOLTAGE
3.96 ~ 4.62V Protection type : Shut down o/p voltage, re-power on to recover
OVER TEMPERATURE
Shut down o/p voltage, recovers automatically after temperature goes down

FUNCTION

5V STANDBY
5VSB : 5V@0.3A ; tolerance±5%, ripple : 50mVp-p(max.)
DC OK SIGNAL
PSU turn on : 3.3 ~ 5.6V ; PSU turn off : 0 ~ 1V
REMOTE CONTROL
RC+ / RC-: 4 ~ 10V or open = power on ; 0 ~ 0.8V or short = power off
FAN CONTROL (Typ.)
Load 20±10% or RTH2≧50℃ Fan on

ENVIRONMENT

WORKING TEMP.
-40 ~ +70℃ (Refer to "Derating Curve")
WORKING HUMIDITY
20 ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY
-40 ~ +85℃, 10 ~ 95% RH non-condensing
TEMP. COEFFICIENT
±0.03%/℃ (0 ~ 50℃)
VIBRATION
10 ~ 500Hz, 5G 10min./1cycle, 60min. each along X, Y, Z axes

SAFETY & EMC (Note 4)

SAFETY STANDARDS
UL62368-1, TUV BS EN/EN62368-1, EAC TP TC 004 approved
WITHSTAND VOLTAGE
I/P-O/P:3KVAC I/P-FG:2KVAC O/P-FG:0.5KVAC
ISOLATION RESISTANCE
I/P-O/P, I/P-FG, O/P-FG:100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSION
Compliance to BS EN/EN55032 (CISPR32) Class B, BS EN/EN61000-3-2,-3, EAC TP TC 020
EMC IMMUNITY
Compliance to BS EN/ EN61000-4-2,3,4,5,6,8,11, BS EN/ EN55024, BS EN/ EN61000-6-2, heavy industry level, EAC TP TC 020

OTHERS

MTBF
1180.3K hrs min. Telcordia SR-332 (Bellcore) ; 130.5K hrs min. MIL-HDBK-217F (25℃)
DIMENSION
218*105*41mm (L*W*H)
PACKING
1.19Kg; 12pcs/15.3Kg/0.81CUFT
Test conditions and notes8
  1. 1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25℃ of ambient temperature.
  2. 2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1μF & 47μF parallel capacitor.
  3. 3. Tolerance : includes set up tolerance, line regulation and load regulation.
  4. 4. The power supply is considered a component which will be installed into a final equipment. All the EMC tests are been executed by mounting the unit on a 360mm*360mm metal plate with 1mm of thickness. The final equipment must be re-confirmed that it still meets EMC directives. For guidance on how to perform these EMC tests, please refer to "EMI testing of component power supplies." (as available on https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf )
  5. 5. Derating may be needed under low input voltages. Please check the derating curve for more details.
  6. 6. Length of set up time is measured at first cold start. Turning ON/OFF the power supply may lead to increase of the set up time.
  7. 7. No load power consumption<0.5W when RC- & RC+ (CN100 pin1,2) 0 ~ 0.8V or short.
  8. 8. The ambient temperature derating of 3.5℃/1000m with fanless models and of 5℃/1000m with fan models for operating altitude higher than 2000m(6500ft).

Technical drawings

HRPG-450-3.3 Mechanical Specification
Mechanical Specification
HRPG-450-3.3 Block Diagram
Block Diagram
HRPG-450-3.3 Derating Curve
Derating Curve
HRPG-450-3.3 Function Manual
Function Manual

Downloads

FAQ

Can I use the HRPG-450-3.3 for high-current 3.3V industrial control electronics?

Yes, this model is a constant voltage 3.3V supply rated for 90A and 297W. That makes it a fit for industrial control or embedded systems that need a heavy 3.3V DC rail rather than a higher-voltage bus.

Is the HRPG-450-3.3 suitable for powering 3.3V FPGA, processor, or logic backplane loads?

It can be appropriate where the load requires a regulated 3.3V output and draws up to 90A. The unit is built as a constant voltage power supply, so it aligns with dense digital electronics that are designed around a 3.3V input rail.

Can this 3.3V power supply be used in automated test or embedded development racks?

It is commonly sized for rack or bench equipment that needs a stable 3.3V source with substantial current headroom, since it provides 297W at 3.3V. The 218 × 105 × 41 mm housing, only 41 mm high, also suits tighter equipment spaces.

Is the HRPG-450-3.3 meant for outdoor or harsh-environment use?

The provided specs show an operating range of -40°C to +70°C, with output derating at higher ambient temperatures per the derating curve. However, no IP rating is listed, so the specs do not confirm suitability for exposed outdoor, washdown, or dust-prone installations without additional protection.

How does the HRPG-450-3.3 compare with the other HRPG-450 models?

Within the HRPG-450 group, the options are HRPG-450-3.3 at 297W, 3.3V, 90A; HRPG-450-5 at 450W, 5V, 90A; HRPG-450-7.5 at 450W, 7.5V, 60A; HRPG-450-12 at 450W, 12V, 37.5A; HRPG-450-15 at 450W, 15V, 30A; HRPG-450-24 at 451.2W, 24V, 18.8A; HRPG-450-36 at 450W, 36V, 12.5A; and HRPG-450-48 at 456W, 48V, 9.5A. The main differences are the output voltage, current, and total rated power for each model.

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Mean Well HRPG-450-3.3 Power Supply 297W 3.3V 90A
Mean Well

Mean Well HRPG-450-3.3 Power Supply 297W 3.3V 90A

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HRPG-450-3.3 is the 3.3V output model of this series: rated current 90A, rated power 297W, typical efficiency 80%.

Features

  • Universal AC input / Full range
  • Built-in active PFC function, PF>0.95
  • High efficiency up to 89.5%
  • Withstand 300VAC surge input for 5 seconds
  • Protections: Short circuit / Overload / Over voltage / Over temperature
  • Built-in constant current limiting circuit
  • Built-in cooling Fan ON-OFF control
  • Built-in DC OK signal
  • Built-in remote ON-OFF control
  • Stand by 5V@0.3A
  • Built-in remote sense function
  • No load power consumption<0.5W (Note.7)
  • 5 years warranty
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