Name: MEAN WELL PSD-45 series: Single-output DC/DC switching power supply - PSD-45C-24
Brand: MEAN WELL
SKU: PSD-45C-24
Price: 38.09 USD
Availability: InStock

MEAN WELL PSD-45 series: Single-output DC/DC switching power supply - PSD-45C-24

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Description

PSD-45C-24 — Single-output DC/DC switching power supply

MEAN WELL PSD-45C-24 is a single-output DC/DC switching power supply with a 36–72 V DC input range. It provides 24 V DC, up to 1.875 A and 45 W rated output, with free-air convection cooling. Apply the specified input-voltage, temperature and mounting-orientation limits.

Download MEAN WELL PSD-45 Datasheet (PDF)
Download MEAN WELL DC-DC Installation Manual (PDF)
Download MEAN WELL EMI Testing Guidance (PDF)

PSD-45: PDF pages 5–6.

Output specifications

Nominal output voltage	24 V DC.
Rated output current	1.875 A.
Output current range	0–1.875 A.
Rated output power	45 W.
Output voltage adjustment	21.6–26.4 V DC.
Ripple and noise	150 mVp-p maximum. Measured at 20 MHz bandwidth using a 12-inch twisted-pair lead terminated with 0.1 µF and 47 µF capacitors.
Voltage tolerance	±2%; includes setup tolerance, line regulation and load regulation.
Line regulation	±0.5%.
Load regulation	±0.5%.
Setup and rise time	Setup 1500 ms; rise time 50 ms, at 48 V DC input and full load.

Input and efficiency

Input voltage	36–72 V DC; 48 V DC nominal input reference. The series has a 2:1 wide input range.
Efficiency	86% typical for this model.
DC input current	1.2 A typical at 48 V DC input.
Switching frequency	96 kHz, fixed.
Input filtering and output noise	Built-in EMI filtering is shown in the block diagram. The series is designed for low ripple and noise; use the model-specific maximum above.

Protection and environment

Protection functions	Short-circuit, overload, overvoltage and input-polarity protection are listed in the series features.
Overload protection	105–160% of rated output power. Output shuts down; remove the fault and cycle input power to recover.
Overvoltage protection	27.6–32.4 V at 10% load. Hiccup mode; automatic recovery after the fault condition is removed.
Repeated power switching	Allow an interval of at least 2 seconds between repeated ON/OFF operations, as specified in the datasheet note.
Cooling	Free-air convection.
Working temperature	−10 to +60°C; apply the appropriate load-derating curve.
Ambient-temperature load curve	Horizontal mounting: 80% load at −10°C, 100% from 0 to +40°C, and 60% at +60°C. Follow the curve between the marked points.
Input-voltage load curve	At Ta = 25°C, the static-characteristic curve shows 80% load at 36 V DC and 100% from 41 to 72 V DC. Follow the plotted transition and apply input-voltage and ambient-temperature derating together.
Working humidity	The separate working-humidity row states 20–95% RH, non-condensing; the working-temperature row states 20–90% RH, non-condensing. Confirm the combined operating conditions before use above 90% RH.
Storage conditions	−20 to +85°C; 10–95% RH.
Temperature coefficient	±0.05%/°C over 0–50°C.
High-altitude derating	For this fanless supply, reduce the allowable ambient temperature by 3.5°C per 1000 m above 2000 m altitude.
Vibration	10–500 Hz, 2 G, 10 minutes per cycle; 60 minutes along each of the X, Y and Z axes.

Safety, EMC and reliability

Safety standards and scope	TUV BS EN/EN62368-1 and EAC TP TC 004 approved.
Withstand voltage	Input to output: 1.5 kVAC; input to FG: 2.0 kVAC; output to FG: 0.5 kVAC.
Isolation resistance	Input to output, input to FG and output to FG: 100 MΩ at 500 VDC, 25°C and 70% RH.
EMC emission	BS EN/EN55032 (CISPR32), Class B; EAC TP TC 020.
EMC immunity	BS EN/EN61000-4-2, -3, -4, -6 and -8; BS EN/EN55035; BS EN/EN61000-6-1, light-industry level; EAC TP TC 020.
Quality and reliability design	100% full-load burn-in testing; low-cost, high-reliability design.
MTBF	Minimum 3067.4 thousand hours by Telcordia SR-332 (Bellcore); minimum 463.9 thousand hours by MIL-HDBK-217F at 25°C.
Manufacturer warranty	2 years.

Connections, mounting and packing

Dimensions	127 × 76 × 30 mm (L × W × H). Mechanical drawing units are millimetres; general tolerance ±1 mm.
Mounting drawing	Four Ø3.8 mm mounting holes on 115.8 × 64.8 mm centres, with 5.6 mm edge offsets. The side view shows 30 mm height. The plan view marks FG near M1.
DC input connector	CN1: Molex 5277-02 or equivalent. Pin 1 = Vin−; pin 2 = Vin+. Mating housing: Molex 5195 or equivalent; contact: Molex 5194 or equivalent.
DC output connector	CN2: Molex 5273-06 or equivalent. Pins 1, 2 and 3 = +V output; pins 4, 5 and 6 = −V output. Mating housing: Molex 5195 or equivalent; contact: Molex 5194 or equivalent.
Internal fuse marking	The mechanical drawing marks T4A / 250V for the C-input version. This is an internal component marking; service must follow the applicable installation guidance.
Connector compatibility	The listed housing and contact references identify mating connection specifications; verify the supplied equivalent and connector pin numbering before wiring.
Packing and weight	190 g, catalog packing reference per unit; not a measured net-weight claim. Outer packing: 72 pieces, 15.6 kg, 1.28 CUFT.
General test conditions	Unless otherwise specified, parameters are measured at nominal input, rated load and 25°C ambient temperature.

Installation and system guidance

Installation safety and polarity	Disconnect the system supply before installation or maintenance and prevent inadvertent reconnection. Have faults examined by a qualified technician; do not attempt repairs yourself. Do not reverse input or output polarity. Avoid high moisture, water, fire sources and ambient temperatures beyond the model specification.
PCB clearance and ventilation	Keep at least 5 mm insulation distance around the PCB unit. Provide good ventilation and keep 10–15 cm clearance when an adjacent device is a heat source. Nonstandard mounting orientation or high ambient temperature may require output-current derating; use the model-specific mounting drawing and derating curves.
Conductor and connector selection	The installation guide recommends these wire columns: 18 AWG / 0.75 mm² for 6 A; 16 AWG / 1.00 mm² for 6–10 A; 14 AWG / 1.5 mm² for 10–16 A; 12 AWG / 2.5 mm² for 16–25 A; 10 AWG / 4 mm² for 25–32 A; and 8 AWG / 6 mm² for 32–40 A. These are paired guide entries, not exact unit conversions. When five or more wires connect to the unit, derate each listed wire-current recommendation to 80%. Select compatible mating housings and terminals from this model’s connector specification.
Rated loading and system inrush	Keep output current and power within the selected model’s ratings and applicable derating conditions. The system may require an additional inrush-current limiting circuit; consult MEAN WELL if the system requirement is uncertain.
System enclosure and grounding	Install this component converter inside the final system enclosure. The surrounding equipment enclosure must have flammability rating V1 or better. Connect the designated FG point to protective earth according to the model drawing.
Complete-system EMC verification	Recheck EMC with the converter installed in the final equipment and connected to a representative load. Wiring and assembly affect the result; the linked component EMI guidance does not certify the finished equipment.