Contents
IRM-20 Series 20W AC-DC PCB Mount Green Power Module

Features
- 2.06″x1.07″ compact size
- Universal input 85~305VAC
- No load power consumption<0.1 W
- EMI Class B without additional components
- Wide operating temp. range -30~70°C
- Protections: Short circuit / Overload / Over voltage
- Cooling by free air convection
- Isolation Class II
- Pass LPS
- 3 years warranty
Applications
- Industrial electrical equipment
- Mechanical equipment
- Factory automation equipment
- Hand-held electronic device
GTIN CODE
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Description
IRM-20 is a 20W miniature (52.4*27.2*24mm) AC-DC module-type power supply, ready to be soldered onto the PCB boards of various kinds of electronic instruments or industrial automation equipment. This product allows the universal input voltage range of 85~305VAC. The 94V-0 flame retardant plastic case potted with silicone enhances heat dissipation and meets the anti-vibration demand up to 2G; moreover, it provides fundamental resistance to dust and moisture. With a high efficiency up to 85% and extremely low no-load power consumption below 0.1W, the IRM-20 series fulfils the worldwide regulation for the low power consumption requirement for electronics. The entire series is a Class Il design (no FG pin), incorporating the built-in EMI filtering components, enabling compliance with BS EN/EN55032 Class B; the supreme EMC features to keep the end electronic units from electromagnetic interference.
Model Encoding

SPECIFICATION
| MODEL | IRM-20-3.3 | IRM-20-5 | IRM-20-12 | IRM-20-15 | IRM-20-24 | |||
|
OUTPUT |
DC VOLTAGE | 3.3V | 5V | 12V | 15V | 24V | ||
| RATED CURRENT | 4.5A | 4A | 1.8A | 1.4A | 0.9A | |||
| CURRENT RANGE | 0 ~ 4.5A | 0 ~ 4A | 0 ~ 1.8A | 0 ~ 1.4A | 0 ~ 0.9A | |||
| RATED POWER | 14.85W | 20W | 21.6W | 21W | 21.6W | |||
| RIPPLE & NOISE (max.) Note.2 | 200mVp-p | 200mVp-p | 200mVp-p | 200mVp-p | 200mVp-p | |||
| VOLTAGE TOLERANCE Note.3 | ±2.5% | ±2.5% | ±2.5% | ±2.5% | ±2.5% | |||
| LINE REGULATION | ±0.5% | ±0.5% | ±0.3% | ±0.3% | ±0.3% | |||
| LOAD REGULATION | ±1% | ±1% | ±0.5% | ±0.5% | ±0.5% | |||
| SETUP, RISE TIME | 1000ms, 20ms/230VAC 1000ms, 20ms/115VAC at full load | |||||||
| HOLD UP TIME (Typ.) | 40ms/230VAC 8ms/115VAC at full load | |||||||
|
INPUT |
VOLTAGE RANGE | 85 ~ 305VAC 120 ~ 430VDC | ||||||
| FREQUENCY RANGE | 47 ~ 440Hz | |||||||
| EFFICIENCY (Typ.) | 76% | 79% | 84% | 84% | 85% | |||
| AC CURRENT (Typ.) | 0.6A/115VAC 0.4A/230VAC 0.3A/277VAC | |||||||
| INRUSH CURRENT (Typ.) | COLD START 20A/115VAC 40A/230VAC | |||||||
| LEAKAGE CURRENT | < 0.25mA/277VAC | |||||||
|
PROTECTION |
OVERLOAD |
115%~160% rated output power | ||||||
| Protection type : Hiccup mode, recovers automatically after fault condition is removed | ||||||||
|
OVER VOLTAGE |
3.8 ~ 4.46V | 5.75 ~ 6.75V | 13.8 ~ 16.2V | 17.25 ~ 20.25V | 27.6 ~ 32.4V | |||
| Protection type : Shut off o/p voltage, clamping by zener diode | ||||||||
|
ENVIRONMENT |
WORKING TEMP. | -30 ~ +70℃ (Refer to “Derating Curve”) | ||||||
| WORKING HUMIDITY | 20 ~ 90% RH non-condensing | |||||||
| STORAGE TEMP., HUMIDITY | -40 ~ +85℃, 10 ~ 95% RH | |||||||
| TEMP. COEFFICIENT | ±0.03%/℃ (0 ~ 50℃) | |||||||
| VIBRATION | 10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes | |||||||
| SOLDERING TEMPERATURE | Wave soldering: 265℃,5s (max.); Manual soldering: 390℃,3s (max.) | |||||||
| OPERATING ALTITUDE Note.4 | 2000 meters | |||||||
|
SAFETY & EMC (Note.5) |
SAFETY STANDARDS | IEC62368-1, UL62368-1, TUV BS EN/EN62368-1, EAC TP TC 004, BSMI CNS14336-1 approved | ||||||
| WITHSTAND VOLTAGE | I/P-O/P:3KVAC | |||||||
| ISOLATION RESISTANCE | I/P-O/P:100M Ohms / 500VDC / 25℃/ 70% RH | |||||||
|
EMC EMISSION |
Parameter | Standard | Test Level / Note | |||||
| Conducted | BS EN/EN55032(CISPR32), CNS13438 | Class B | ||||||
| Radiated | BS EN/EN55032(CISPR32), CNS13438 | Class B | ||||||
| Harmonic Current (Note 5) | BS EN/EN61000-3-2 | Class A | ||||||
| Voltage Flicker | BS EN/EN61000-3-3 | ——- | ||||||
|
EMC IMMUNITY |
BS EN/EN55035, BS EN/EN61000-6-2 | |||||||
| Parameter | Standard | Test Level /Note | ||||||
| ESD | BS EN/EN61000-4-2 | Level 3, 8KV air; Level 2, 4KV contact, criteria A | ||||||
| Radiated Susceptibility | BS EN/EN61000-4-3 | Level 3, Criteria A | ||||||
| EFT/Burest | BS EN/EN61000-4-4 | Level 3, Criteria A | ||||||
| Surge | BS EN/EN61000-4-5 | Level 4,2KV/L-N, criteria A | ||||||
| Conducted | BS EN/EN61000-4-6 | Level 3, Criteria A | ||||||
| Magnetic Field | BS EN/EN61000-4-8 | Level 4, Criteria A | ||||||
| Voltage Dips and interruptions | BS EN/EN61000-4-11 | >95% dip 0.5 periods, 30% dip 25 periods,
>95% interruptions 250 periods |
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|
OTHERS |
MTBF | 10656.2K hrs min. Telcordia SR-332 (Bellcore) ; 970.3K hrs min. MIL-HDBK-217F (25℃) | ||||||
| DIMENSION | 52.4*27.2*24mm (L*W*H) | |||||||
| PACKING | 0.05Kg/240pcs/13Kg/0.94CUFT | |||||||
| NOTE | 1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25℃ of ambient temperature.
2. Ripple & noise are measured at 20MHz of bandwidth by using a 12″ twisted pair-wire terminated with a 0.1uf & 47uf parallel capacitor. 3. Tolerance:includes set up tolerance, line regulation and load regulation. 4. The ambient temperature derating of 3.5℃/1000m with fanless models and of 5℃/1000m with fan models for operating altitudes higher than 2000m(6500ft). 5. The power supply is considered as an independent unit,but the final equipment still needs to confirm that the whole system complies with the 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) ※ Product Liability Disclaimer:For detailed information, please refer to https://www.meanwell.com/serviceDisclaimer.aspx |
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Block Diagram

Derating Curve

Output Derating VS Input Voltage

Mechanical Specification

Installation Manual
- Please refer to : https://www.meanwell.com/manual.html

