MEAN WELL PHP-3500-48CAN is a fanless PHP-3500 AC/DC power supply with a 48 V nominal output, 73 A rated current and 3504 W rated output under the specified input, cooling and temperature conditions. This complete model uses CANBus. Conduction, external forced-air and water-cooling arrangements have different permitted loads; the model number does not guarantee full output without adequate cooling.
Product Datasheet
Download MEAN WELL PHP-3500 Datasheet (PDF)
The PHP-3500 section is on PDF pages 9, 10, 11, 12, 13, 14, 15, 16, 17, 18. Refer to the complete mechanical drawings and notes when planning installation.
Model and Output Specifications
| Complete model / interface |
PHP-3500-48CAN / CANBus |
| Nominal output / rated current / rated power |
48 V DC / 73 A / 3504 W, subject to all cooling and derating limits |
| Ripple and noise, maximum |
480 mVp-p |
| Built-in SVR adjustment |
48–57.6 V |
| Accuracy and regulation |
Voltage tolerance ±1.0%; line regulation ±0.5%; load regulation ±0.5% |
| Typical efficiency |
96% measured at 75% load |
The model encoding uses no communication suffix for PMBus and CAN for CANBus. These are documented model options; catalogue availability wording is not a live stock guarantee. Both use the electrical ratings for the corresponding 24 V or 48 V column.
Unless otherwise stated, specification measurements use 230 VAC input, rated load and 25°C ambient. Voltage tolerance includes setup tolerance, line regulation and load regulation. Ripple is measured with 20 MHz bandwidth using a 12-inch twisted pair terminated by parallel 0.1 µF and 47 µF capacitors.
Input and Timing
| Input range / frequency |
90–264 VAC or 127–370 VDC; 47–63 Hz AC |
| Active PFC / AC input current |
Typical PF ≥0.95 at 230 VAC, full load; typical AC current 20 A at 115 VAC and 20 A at 230 VAC |
| Cold-start inrush / leakage |
Typical inrush 30 A at 115 VAC, 80 A at 230 VAC; leakage 2 mA at 240 VAC |
| Setup / rise / hold-up |
Setup 1500 ms and rise 60 ms at 115/230 VAC, full load; typical hold-up 16 ms at 75% load or 10 ms at full load at either input |
Active inrush limiting is shown in the block diagram. PFC switching frequency is 110 kHz and PWM frequency is 100 kHz. The 60 Hz static-input curve permits 50% load at 90 VAC, rising to 100% at 180 VAC and remaining at 100% through 264 VAC; thermal and other limits still apply.
Cooling, Derating and Condensation
| External forced-air or water cooling |
Horizontal installation: 100% load through 50°C ambient, derating to 50% at 70°C; measured case temperature must remain ≤45°C |
| Additional aluminium plate |
450 × 450 × 3 mm: 65% load through 45°C ambient, derating to 20% at 70°C; measured case temperature must remain ≤70°C |
| Without an aluminium plate |
50% load through 25°C ambient, derating to 20% at 50°C; the plotted curve ends at 50°C |
These separate curves must not be combined into an unrestricted full-power temperature claim. The external fan arrangement specifies two fans, each 128 CFM, with airflow directed at the power supply; the installation sketch shows a 100 mm spacing reference. The unit has no built-in fan. The shaded −30 to −25°C ambient portion requires 230 VAC input.
The specification states a −30 to +70°C baseplate-temperature range, not an unconditional ambient full-load range. Use the case-temperature location in the mechanical drawing and apply the cooling, input-voltage, ambient, altitude and output-programming limits together.
For the optional water plate, the stated inlet-water condition is 25°C with at least 1 LPM flow. Select coolant temperature for the actual room temperature and humidity using the non-condensing chart on PDF page 18; its curves cover 15, 20, 25, 30, 35, 38, 40 and 45°C water. A 25°C inlet is not automatically condensation-safe in every environment. Operation and storage must remain non-condensing.
Output Voltage and Current Programming
| PV range and connection |
50–120% of nominal voltage; external PV control between CN55 pin 5 (PV) and pin 1 (−V signal) |
| PC range and connection |
20–100% of rated current; external PC control between CN55 pin 3 (PC) and pin 1 (−V signal) |
The control-voltage transfer graphs are nonlinear; use the dedicated PV and PC curves rather than assuming a linear volts-to-output conversion. The supported PC range is 20–100% of rated current, not a general overload entitlement.
Available output current is 80% of rated current at 50–90% of nominal output voltage, rises to 100% between 90% and 95% voltage, remains 100% at 95–100% voltage, then falls to 80% at 120% voltage. Do not combine maximum programmed voltage with unrestricted rated current.
PV/PC operation is specified when PMBus control is not operating; SVR adjustment is specified when neither PMBus nor PV/PC is in use. Follow the communication manual for the selected interface and control priority; do not assume simultaneous command sources are permitted. Inadequate water or fan cooling can trigger overtemperature protection near the upper or lower PV range; enhanced cooling may be necessary.
In PC or communication-control mode, the automatic thermal derating graph reduces load from 100% at T1 to 50% at T2; T2 is typically T1 + 5°C and T1 is the maximum full-load ambient temperature under the applicable cooling arrangement. This graph is nonlinear. If output remains below 80% of Vset for 5 seconds, it shuts down and requires re-powering to recover.
Protection and Environmental Conditions
| Overload |
105–115% of rated current: constant-current limiting, then output shutdown after 5 seconds; after output voltage falls, re-power to recover |
| Overvoltage |
60–72 V: output shutdown; re-power to recover |
| Overtemperature |
Output shutdown; automatic recovery after temperature falls |
| Humidity / storage |
Operating 20–90% RH; storage −40 to +85°C and 10–95% RH; non-condensing |
| Temperature coefficient / vibration |
±0.03%/°C over 0–50°C; 10–500 Hz, 2G, 10 minutes/cycle, 60 minutes along each X/Y/Z axis |
The cover specifies overvoltage category III operation up to 3000 m; the specification separately lists category II according to EN61558 up to 5000 m. These are different installation categories and must not be interchanged. Above 2000 m, the stated ambient-temperature derating is 3.5°C per 1000 m for fanless cooling and 5°C per 1000 m for fan cooling.
The user manual advises disconnecting AC, correcting the cause of excessive heat and letting the unit return to normal temperature (cooling may take tens of minutes) before restarting after overtemperature protection. This cooling procedure complements the specification statement that OTP recovers after temperature falls.
The green LED indicates normal operation. Flashing red indicates an internal temperature of 85°C while the unit still operates normally without entering OTP; an alarm is sent through PMBus/CANBus. Solid red indicates an abnormal protection state, such as overtemperature or overload. The 85°C alarm is an internal-temperature indication, not an ambient operating rating.
Parallel Operation and SW51
| Maximum system / current limit |
Up to four units; maximum total current = rated current per unit × number of units × 0.9 |
| Voltage matching / wiring |
Adjust output-voltage difference to <0.2 V; use short, large-diameter output wiring |
Parallel units must be the same model with matching rated output voltage and current. Connect CN55 pin 1 (−V signal), pins 13/14 (DB) and pins 15/16 (DA) between units as drawn. Twist long control wiring as shown to reduce noise. For one unit, CN55 parallel wiring is not connected and SW51 is ON. For two units set ON/ON; for three set ON/OFF/ON; for four set ON/OFF/OFF/ON along the connected chain.
Current sharing may not be fully balanced below 5% of the aggregate rated current. Ripple and noise can exceed the normal specification at light load and return to the stated level above 5% load. The family headline of up to 14000 W does not replace the per-model current formula, individual power ratings or cooling/input derating limits.
CN47 Remote Control, Auxiliary Power and Status
| Pins 1 / 2: auxiliary supply |
Pin 1 +12V-AUX, 10.8–13.2 V and maximum 0.5 A, referenced to pin 2 GND-AUX; built-in ORing diodes; not switched off by remote OFF |
| Pin 3: remote ON/OFF |
Short pin 3 to pin 1 for ON (10.8–13.2 V); open for OFF (−0.5 to +0.5 V); maximum input 13.2 V |
| Pin 4 / pin 5: signal return and DC-OK |
Pin 4 GND-AUX(S); pin 5 DC-OK output only, maximum sourcing current 10 mA; maximum external applied voltage stated for the signal is 5.6 V |
| Pin 6: T-ALARM |
Output only, maximum sourcing current 10 mA; high 3.5–5.5 V indicates internal-temperature alarm; low −0.5 to +0.5 V indicates normal temperature |
Auxiliary and signal returns are isolated from the main +Vo/−Vo output. Auxiliary power has ±10% tolerance and 150 mVp-p ripple. Remote control can be used for an individual supply or the parallel arrangement shown.
Per user manual section 3.9, DC-OK is low (−0.5 to +0.5 V) when the DC output is normal and high (3.5–5.5 V) when it is abnormal. Use CN47 pin 5 referenced to pin 4 GND-AUX(S); the maximum sourcing current is 10 mA.
CN55 Programming and Communication Pinout
| Pins 1 / 2 |
−V signal / +V signal |
| Pins 3–6 |
Pins 3/4 PC; pins 5/6 PV |
| Pins 7–16 |
Pins 7–12 NC; pins 13/14 DB and pins 15/16 DA for parallel control |
| Pins 17–22 |
Pins 17/18 GND-AUX(S); pins 19/20 CANL data; pins 21/22 CANH data |
PC, PV and DA/DB are non-isolated signals referenced to −V signal. Communication signals are isolated and referenced to GND-AUX(S). The +V/−V signal labels do not establish a separate remote-sense compensation rating. Use the PMBus or CANBus communication manual matching this exact model for commands and monitoring; do not cross-wire the alternative interface pin functions.
Connectors and Optional Cooling Hardware
| CN55 connector / mating housing |
HRS DF11-22DP-2DS / HRS DF11-22DS, or equivalent |
| CN47 connector / mating housing |
HRS DF11-06DP-2DS / HRS DF11-06DS, or equivalent |
| Contact designation as printed |
HRS DF11-**SC, or equivalent; ** is an unspecified selection, not a complete contact order code |
| Optional cold plate |
PGG1WHS-656; plate 380 × 140.4 × 12 mm; two 3/8-inch (φ9.5) fluid connections |
Confirm the exact contact variant, wire suitability and connector assembly with the connector supplier; the abbreviated/wildcard contact designation must not be expanded by guessing. The drawings identify interface components, not an entitlement to included mating housings, contacts, fan units or cooling hardware.
The PGG1WHS-656 water-cooling plate is optional; contact the manufacturer for supply. Follow its inlet/outlet drawing and provide the cooling system separately. Use thermal grease with conductivity ≥1 W/(m·K) and thickness ≤0.3 mm. The drawings show M5 × 6 combination screws and M4 × 10 features; these drawing callouts do not establish additional orderable kit codes or supplied quantities.
Dimensions, Mounting and Power Terminals
| Dimensions / case |
Body 380 × 141.4 × 60 mm (L × W × H); water-cooling arrangement 380 × 141.4 × 72 mm; case 278A; drawing tolerance ±0.5 mm |
| Mounting pattern |
Six slots marked 6-φ5.2 L=12; main drawing pitches 369 mm longitudinal and 125 mm transverse; consult the complete drawing for offsets |
| AC input terminal TB1 |
Pin 1 AC/L, pin 2 AC/N, pin 3 FG; DECA T25-EM10-03; maximum mounting torque 18 kgf·cm |
| DC power terminals |
+Vo and −Vo; maximum mounting torque 10 kgf·cm |
For conduction cooling, firmly mount the supply at the centre of an even, smooth 450 × 450 × 3 mm aluminium plate or equivalent cabinet surface. Thermal grease can improve contact. M5 × 6 screws are illustrated. Slot/thread/drawing dimensions are installation references, not supplied accessory counts or permission to use longer screws. Preserve the illustrated case-temperature measurement location and cooling clearances.
Safety and EMC Integration
| Listed approvals / design references |
UL62368-1, CAN/CSA C22.2 No.62368-1, TUV BS EN/EN62368-1 and EAC TP TC 004 approved; design refers to BS EN/EN61558-1 and BS EN/EN60335-1 |
| Dielectric strength / insulation |
I/P–O/P 3 kVAC; I/P–FG 2 kVAC; O/P–FG 1.25 kVAC. Insulation resistance 100 MΩ at 500 VDC, 25°C/70% RH across these pairs |
| Emissions / harmonics / flicker |
BS EN/EN55032 (CISPR32) conducted and radiated Class A; BS EN/EN61000-3-12 harmonic current; BS EN/EN61000-3-3 voltage flicker |
Immunity is listed under BS EN/EN55035. ESD: EN61000-4-2 level 3 at 8 kV air and level 2 at 4 kV contact. Radiated immunity EN61000-4-3, EFT/burst EN61000-4-4 and conducted immunity EN61000-4-6 are level 3; magnetic-field immunity EN61000-4-8 is level 4. The surge row states 2 kV line-to-line and 4 kV line-to-earth.
EN61000-4-11 tests include >95% dip for 0.5 periods, 30% dip for 25 periods and >95% interruption for 250 periods. The documented EMC setup mounts the supply on a 600 × 900 × 1 mm metal plate. This supply is a component; the final equipment must be checked again for EMC compliance. A design reference is not an additional listed approval.
Weight, Reliability and Warranty
| Single-unit reference weight |
4.5 kg (4500 g), from the PACKING entry; not a guaranteed installed weight with optional plate, coolant, fittings or fans |
| Packing reference |
4 pieces / 19 kg / 2.46 CUFT |
| MTBF / warranty |
Minimum 544.8 thousand hours by Telcordia SR-332 (Bellcore); minimum 56.3 thousand hours by MIL-HDBK-217F at 25°C; five-year warranty stated in the catalogue |
MTBF values are calculated reliability references, not guaranteed service life. Apply the manufacturer warranty terms to the supplied product and application.
