MEAN WELL PT-45 series: Open-Frame Triple-Output AC/DC Power Supply - PT-45A

Description

MEAN WELL PT-45A is an open-frame triple-output AC/DC power supply with 40.5 W combined rated output. CH1 provides 5 V at 3 A; CH2 provides 12 V at 2 A; CH3 provides −5 V at 0.3 A. Apply all channel-current, combined-power and cooling limits together.

Product Datasheet

Download MEAN WELL PT-45 Datasheet (PDF)

The PT-45 section is on PDF pages 1, 2. Refer to the complete mechanical drawings and notes when planning installation.

Complete Triple-Output Supply

Complete model PT-45A.
All three outputs CH1: 5 V DC at 3 A; CH2: 12 V DC at 2 A; CH3: −5 V DC at 0.3 A.
Combined rated output power 40.5 W for the complete three-output unit.
Typical efficiency 75%.
CH1 voltage adjustment 4.75 to 5.5 V.
Forced-air maximum output power 52 W with at least 18 CFM airflow, within the individual output-current limits and applicable thermal conditions.

The three channels form one complete power supply. Observe each channel’s minimum and maximum current and the combined output-power limits together. Individual maximum channel currents are not a simultaneous combined-power rating.

CH1 Output Specifications

Nominal voltage 5 V DC relative to COM.
Rated current 3 A.
Current range 0.4 to 5 A.
Minimum load 0.4 A.
Maximum ripple and noise 50 mVp-p.
Voltage tolerance ±4%.
Line regulation ±1%.
Load regulation ±3%.

CH2 Output Specifications

Nominal voltage 12 V DC relative to COM.
Rated current 2 A.
Current range 0.2 to 2.5 A.
Minimum load 0.2 A.
Maximum ripple and noise 120 mVp-p.
Voltage tolerance ±7%.
Line regulation ±2%.
Load regulation ±4%.

CH3 Output Specifications

Nominal voltage −5 V DC relative to COM.
Rated current 0.3 A.
Current range 0 to 0.5 A.
Minimum load 0 A.
Maximum ripple and noise 50 mVp-p.
Voltage tolerance ±5%.
Line regulation ±1%.
Load regulation ±1%.

Input and Timing

Input range 90–264 VAC or 127–370 VDC.
AC frequency 47 to 440 Hz.
Typical AC input current 1 A at 115 VAC; 0.7 A at 230 VAC.
Typical cold-start inrush 15 A at 115 VAC; 30 A at 230 VAC.
Leakage current Less than 0.75 mA.
Set-up / rise time 800 / 20 ms at full load.
Typical hold-up time 60 ms at full load.
Switching frequency Fixed 65 kHz.
Production test 100% full-load burn-in.

Unless specified otherwise, parameters are measured at 230 VAC, rated load and 25°C ambient. Ripple and noise are measured at 20 MHz bandwidth using a 12-inch twisted pair terminated with parallel 0.1 µF and 47 µF capacitors. Voltage tolerance includes set-up tolerance, line regulation and load regulation.

Protection

Short circuit / overload 53 to 75 W output power. Hiccup mode; automatic recovery after the fault condition is removed.
Overvoltage threshold CH1: 5.75–6.75 V.
Overvoltage response Hiccup mode; automatic recovery after the fault condition is removed.

Cooling, Load Derating and Environment

Working temperature −10 to +60°C, subject to the applicable horizontal-installation derating curve.
Natural-convection curve 80% load at −10°C, rising to 100% at 0°C; full load through 40°C, then decreasing to 60% at 60°C.
Working humidity 20–90% RH, non-condensing.
Storage conditions −20 to +85°C; 10–95% RH.
Temperature coefficient ±0.04%/°C over 0–50°C on the +5 V output.
Vibration 10–500 Hz, 2 G; 10-minute cycle, 60 minutes along each X, Y and Z axis.
High-altitude temperature adjustment Above 2000 m, reduce allowable ambient temperature by 3.5°C per 1000 m for fanless operation, or 5°C per 1000 m for fan-cooled operation.

Keep airflow unobstructed and apply the load limits for the actual mounting orientation and cooling conditions.

Mechanical Installation and Grounding

Dimensions, L × W × H 127 × 76 × 28 mm.
Drawing tolerance ±1 mm.
Mounting holes Four Ø3.8 mm holes, with 115.8 × 64.8 mm centre spacing and 5.6 mm edge references.
Grounding points Connect M1 and M2 to the equipment grounding system for EMC; M1 is also marked as the safety-ground point.
Heatsink isolation HS1 and HS2 must not be shorted together.
Fuse marking FS1: AC F4A / 250 V.

Maintain electrical clearance around the open-frame assembly and use the complete mechanical drawing for mounting. Grounding must be completed before operation.

Input, Outputs and Mating Connectors

AC input CN1 Molex 5277-02 or equivalent: pin 1 AC/N; pin 2 AC/L.
Output CN2 Molex 5273-06 or equivalent: pin 1 CH2 12 V; pin 2 CH1 +5 V; pin 3 CH1 +5 V; pin 4 COM; pin 5 COM; pin 6 CH3 −5 V.
Mating housing reference Molex 5195 or equivalent.
Contact terminal reference Molex 5194 or equivalent.

Select complete mating housings and contacts for the circuit count and wire size. The connector table provides these mating-part references; a separate cable kit, fan model or mounting-accessory kit is not specified.

Safety and Electromagnetic Compatibility

Safety approvals UL62368-1, TUV BS EN/EN62368-1 and EAC TP TC004.
Withstand voltage, one minute Input–output 3 kVAC; input–FG 2 kVAC; output–FG 0.5 kVAC.
Insulation resistance Input–output, input–FG and output–FG: 100 MΩ at 500 VDC, 25°C and 70% RH.
Emission compliance BS EN/EN55032 (CISPR32) Class B; BS EN/EN61000-3-2 and -3; EAC TP TC020.
Immunity compliance BS EN/EN61000-4-2, -3, -4, -5, -6, -8, -11; BS EN/EN55035, light-industry level; EAC TP TC020.

This power supply is an installation component. EMC testing uses a 360 × 360 mm metal plate, 1 mm thick. Verify the final equipment against applicable safety and EMC requirements with its actual mounting, grounding and wiring.

Weight, Reliability and Catalogue

Single-unit reference weight 210 g (0.21 kg), explicitly listed per unit in PACKING.
Carton packing 72 pieces / 17 kg / 1.28 CUFT.
MTBF, minimum estimates 3291.3 thousand hours under Telcordia SR-332 (Bellcore); 456.9 thousand hours under MIL-HDBK-217F at 25°C.
Warranty Two-year manufacturer warranty, subject to applicable terms.
Catalogue revision PT-45-SPEC, 2024-10-30; combined PDF pages 1–2.

MEAN WELL PT-45 series: Open-Frame Triple-Output AC/DC Power Supply - PT-45A

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MEAN WELL PT-45A is an open-frame triple-output AC/DC power supply with 40.5 W combined rated output. CH1 provides 5 V... Read more

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    Description

    MEAN WELL PT-45A is an open-frame triple-output AC/DC power supply with 40.5 W combined rated output. CH1 provides 5 V at 3 A; CH2 provides 12 V at 2 A; CH3 provides −5 V at 0.3 A. Apply all channel-current, combined-power and cooling limits together.

    Product Datasheet

    Download MEAN WELL PT-45 Datasheet (PDF)

    The PT-45 section is on PDF pages 1, 2. Refer to the complete mechanical drawings and notes when planning installation.

    Complete Triple-Output Supply

    Complete model PT-45A.
    All three outputs CH1: 5 V DC at 3 A; CH2: 12 V DC at 2 A; CH3: −5 V DC at 0.3 A.
    Combined rated output power 40.5 W for the complete three-output unit.
    Typical efficiency 75%.
    CH1 voltage adjustment 4.75 to 5.5 V.
    Forced-air maximum output power 52 W with at least 18 CFM airflow, within the individual output-current limits and applicable thermal conditions.

    The three channels form one complete power supply. Observe each channel’s minimum and maximum current and the combined output-power limits together. Individual maximum channel currents are not a simultaneous combined-power rating.

    CH1 Output Specifications

    Nominal voltage 5 V DC relative to COM.
    Rated current 3 A.
    Current range 0.4 to 5 A.
    Minimum load 0.4 A.
    Maximum ripple and noise 50 mVp-p.
    Voltage tolerance ±4%.
    Line regulation ±1%.
    Load regulation ±3%.

    CH2 Output Specifications

    Nominal voltage 12 V DC relative to COM.
    Rated current 2 A.
    Current range 0.2 to 2.5 A.
    Minimum load 0.2 A.
    Maximum ripple and noise 120 mVp-p.
    Voltage tolerance ±7%.
    Line regulation ±2%.
    Load regulation ±4%.

    CH3 Output Specifications

    Nominal voltage −5 V DC relative to COM.
    Rated current 0.3 A.
    Current range 0 to 0.5 A.
    Minimum load 0 A.
    Maximum ripple and noise 50 mVp-p.
    Voltage tolerance ±5%.
    Line regulation ±1%.
    Load regulation ±1%.

    Input and Timing

    Input range 90–264 VAC or 127–370 VDC.
    AC frequency 47 to 440 Hz.
    Typical AC input current 1 A at 115 VAC; 0.7 A at 230 VAC.
    Typical cold-start inrush 15 A at 115 VAC; 30 A at 230 VAC.
    Leakage current Less than 0.75 mA.
    Set-up / rise time 800 / 20 ms at full load.
    Typical hold-up time 60 ms at full load.
    Switching frequency Fixed 65 kHz.
    Production test 100% full-load burn-in.

    Unless specified otherwise, parameters are measured at 230 VAC, rated load and 25°C ambient. Ripple and noise are measured at 20 MHz bandwidth using a 12-inch twisted pair terminated with parallel 0.1 µF and 47 µF capacitors. Voltage tolerance includes set-up tolerance, line regulation and load regulation.

    Protection

    Short circuit / overload 53 to 75 W output power. Hiccup mode; automatic recovery after the fault condition is removed.
    Overvoltage threshold CH1: 5.75–6.75 V.
    Overvoltage response Hiccup mode; automatic recovery after the fault condition is removed.

    Cooling, Load Derating and Environment

    Working temperature −10 to +60°C, subject to the applicable horizontal-installation derating curve.
    Natural-convection curve 80% load at −10°C, rising to 100% at 0°C; full load through 40°C, then decreasing to 60% at 60°C.
    Working humidity 20–90% RH, non-condensing.
    Storage conditions −20 to +85°C; 10–95% RH.
    Temperature coefficient ±0.04%/°C over 0–50°C on the +5 V output.
    Vibration 10–500 Hz, 2 G; 10-minute cycle, 60 minutes along each X, Y and Z axis.
    High-altitude temperature adjustment Above 2000 m, reduce allowable ambient temperature by 3.5°C per 1000 m for fanless operation, or 5°C per 1000 m for fan-cooled operation.

    Keep airflow unobstructed and apply the load limits for the actual mounting orientation and cooling conditions.

    Mechanical Installation and Grounding

    Dimensions, L × W × H 127 × 76 × 28 mm.
    Drawing tolerance ±1 mm.
    Mounting holes Four Ø3.8 mm holes, with 115.8 × 64.8 mm centre spacing and 5.6 mm edge references.
    Grounding points Connect M1 and M2 to the equipment grounding system for EMC; M1 is also marked as the safety-ground point.
    Heatsink isolation HS1 and HS2 must not be shorted together.
    Fuse marking FS1: AC F4A / 250 V.

    Maintain electrical clearance around the open-frame assembly and use the complete mechanical drawing for mounting. Grounding must be completed before operation.

    Input, Outputs and Mating Connectors

    AC input CN1 Molex 5277-02 or equivalent: pin 1 AC/N; pin 2 AC/L.
    Output CN2 Molex 5273-06 or equivalent: pin 1 CH2 12 V; pin 2 CH1 +5 V; pin 3 CH1 +5 V; pin 4 COM; pin 5 COM; pin 6 CH3 −5 V.
    Mating housing reference Molex 5195 or equivalent.
    Contact terminal reference Molex 5194 or equivalent.

    Select complete mating housings and contacts for the circuit count and wire size. The connector table provides these mating-part references; a separate cable kit, fan model or mounting-accessory kit is not specified.

    Safety and Electromagnetic Compatibility

    Safety approvals UL62368-1, TUV BS EN/EN62368-1 and EAC TP TC004.
    Withstand voltage, one minute Input–output 3 kVAC; input–FG 2 kVAC; output–FG 0.5 kVAC.
    Insulation resistance Input–output, input–FG and output–FG: 100 MΩ at 500 VDC, 25°C and 70% RH.
    Emission compliance BS EN/EN55032 (CISPR32) Class B; BS EN/EN61000-3-2 and -3; EAC TP TC020.
    Immunity compliance BS EN/EN61000-4-2, -3, -4, -5, -6, -8, -11; BS EN/EN55035, light-industry level; EAC TP TC020.

    This power supply is an installation component. EMC testing uses a 360 × 360 mm metal plate, 1 mm thick. Verify the final equipment against applicable safety and EMC requirements with its actual mounting, grounding and wiring.

    Weight, Reliability and Catalogue

    Single-unit reference weight 210 g (0.21 kg), explicitly listed per unit in PACKING.
    Carton packing 72 pieces / 17 kg / 1.28 CUFT.
    MTBF, minimum estimates 3291.3 thousand hours under Telcordia SR-332 (Bellcore); 456.9 thousand hours under MIL-HDBK-217F at 25°C.
    Warranty Two-year manufacturer warranty, subject to applicable terms.
    Catalogue revision PT-45-SPEC, 2024-10-30; combined PDF pages 1–2.

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