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Mean Well PWM-90-48DA Power Supply 90W 48V - DALI 1.88A

PWM style outputfully isolated plastic caseIP67Class II design without FGDALI

SKU PWM-90-48DA

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PWM-90-48DA

PWM-40-48 Fixed output Backorder

PWM-60-48 Dimmable Low stock

PWM-90-48 Dimmable Backorder

PWM-90-48DA DALI Backorder

PWM-90-48DA2 DALI2 Low stock

Product variants

Available to order

Overview

PWM-90-48DA is the 48V output model of this series: rated current 1.88A, rated power 90.24W, typical efficiency 90.5%.

PWM-90 series is a 90W LED AC/DC LED driver featuring the constant voltage mode with PWM style output, which is able to maintain the brightness homogeneity when driving all kinds of LED strips.PWM-90 operates from 90~305VAC and offers models with different rated voltage ranging between 12V and 48V. Thanks to the high efficiency up to 90.5%, with the fanless design, the entire series is able to operate for -40℃ ~ +85℃ case temperature under free air convection. The entire series is rated with IP67 ingress protection level and is suitable to work for dry, damp or wet locations. PWM-90 is equipped with dimming function that varies the duty cycle of the output, providing great flexibility for LED strips applications.

Features

Constant Voltage PWM style output with frequency 1.47kHz
Plastic housing with class II design
Built-in active PFC function
Class 2 power unit(except PWM-90-12)
No load power consumption <0.5W
Fully encapsulated with IP67 level
Function: 3 in 1 dimming (dim-to-off); DALI
Minimum dimming level 0.2% for DA type
Typical lifet ime>50000 hours and 5 years warranty

Specifications

PWM-90-48DASpecifications from the official datasheet (2019-12-26 edition)Download datasheet PDF

OUTPUT

DC VOLTAGE: 48V
RATED CURRENT: 1.88A
RATED POWER: 90.24W
DIMMING RANGE: 0 ~ 100%
PWM FREQUENCY (Typ.): 1.47kHz
SETUP, RISE TIME^Note.2: 500ms, 80ms/ 115VAC or 230VAC
HOLD UP TIME (Typ.): 16ms/115VAC or 230VAC

INPUT

VOLTAGE RANGE^Note.3: 90 ~ 305VAC 127 ~ 431VDC (Please refer to "STATIC CHARACTERISTIC" section)
FREQUENCY RANGE: 47 ~ 63Hz
POWER FACTOR (Typ.): PF>0.98/115VAC, PF>0.96/230VAC, PF>0.92/277VAC @ full load (Please refer to "POWER FACTOR (PF) CHARACTERISTIC" section)
TOTAL HARMONIC DISTORTION: THD< 20%(@load≧60%/115VAC, 230VAC; @load≧75%/277VAC) (Please refer to “TOTAL HARMONIC DISTORTION” section)
EFFICIENCY (Typ.): 90.5%
AC CURRENT (Typ.): 0.95A / 115VAC 0.5A / 230VAC 0.4A / 277VAC
INRUSH CURRENT (Typ.): COLD START 60A(twidth=550μs measured at 50% Ipeak) at 230VAC; Per NEMA 410
MAX. NO. of PSUs on 16A CIRCUIT BREAKER: 3 units (circuit breaker of type B) / 6 units (circuit breaker of type C) at 230VAC
LEAKAGE CURRENT: <0.25mA / 277VAC
NO LOAD POWER CONSUMPTION: <0.5W

PROTECTION

OVERLOAD: 108 ~ 130% rated output power Hiccup mode, recovers automatically after fault condition is removed
SHORT CIRCUIT: Shut down o/p voltage, re-power on to recover
OVER VOLTAGE: 54 ~ 60V Shut down o/p voltage, re-power on to recover
OVER TEMPERATURE: Shut down o/p voltage, re-power on to recover

ENVIRONMENT

WORKING TEMP.: Tcase=-40 ~ +85℃ (Please refer to “ OUTPUT LOAD vs TEMPERATURE” section)
MAX. CASE TEMP.: Tcase=+85℃
WORKING HUMIDITY: 20 ~ 95% RH non-condensing
STORAGE TEMP., HUMIDITY: -40 ~ +80℃, 10 ~ 95% RH
TEMP. COEFFICIENT: ±0.03%/℃ (0 ~ 50℃)
VIBRATION: 10 ~ 500Hz, 5G 12min./1cycle, period for 72min. each along X, Y, Z axes

SAFETY & EMC

SAFETY STANDARDS^Note.5: UL8750(except for DA-Type), CSA C22.2 No. 250.13-12; ENEC EN61347-1, EN61347-2-13 independent,EN62384, IP67, BIS IS15885(for 12,24,48 Blank Type only), EAC TP TC 004,GB19510.1,GB19510.14 approved; Design refer to EN60335-1
DALI STANDARDS: Comply with IEC62386-101, 102, 207 for DA-Type only,Device type 6(DT6)
WITHSTAND VOLTAGE: I/P-O/P:3.75KVAC
ISOLATION RESISTANCE: I/P-O/P:100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSION^Note.6: Compliance to EN55015, EN61000-3-2 Class C (@load≧60%) ; EN61000-3-3,GB17743 and GB17625.1,EAC TP TC 020
EMC IMMUNITY: Compliance to EN61000-4-2,3,4,5,6,8,11; EN61547, light industry level (surge immunity Line-Line 2KV),EAC TP TC 020

OTHERS

MTBF: 902.4K hrs min. Telcordia SR-332 (Bellcore) ; 224.2K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: 171*63*37.5mm (L*W*H)
PACKING: 0.77Kg; 18pcs/14.9Kg/0.97CUFT

Test conditions and notes8

1. All parameters NOT specially mentioned are measured at 230VAC input, rated current and 25℃ of ambient temperature.
2. De-rating may be needed under low input voltages. Please refer to “STATIC CHARACTERISTIC” sections for details.
3. Length of set up time is measured at first cold start. Turning ON/OFF the driver may lead to increase of the set up time.
4. The driver is considered as a component that will be operated in combination with final equipment. Since EMC performance will be affected by the complete installation, the final equipment manufacturers must re-qualify EMC Directive on the complete installation again.
5. This series meets the typical life expectancy of >50,000 hours of operation when Tcase, particularly tc point (or TMP, per DLC), is about 75℃ or less.
6. Please refer to the warranty statement on MEAN WELL’s website at http://www.meanwell.com
7. 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).
8. For any application note and IP water proof function installation caution, please refer our user manual before using. https://www.meanwell.com/Upload/PDF/LED_EN.pdf

Technical drawings

PWM-90-48DA DIMMING OPERATION — DIMMING OPERATION

PWM-90-48DA ◎ Applying additive resistance — ◎ Applying additive resistance

PWM-90-48DA OUTPUT LOAD vs TEMPERATURE — OUTPUT LOAD vs TEMPERATURE

PWM-90-48DA STATIC CHARACTERISTIC — STATIC CHARACTERISTIC

PWM-90-48DA TOTAL HARMONIC DISTORTION — TOTAL HARMONIC DISTORTION

PWM-90-48DA Block Diagram — Block Diagram

PWM-90-48DA Mechanical Specification — Mechanical Specification

PWM-90-48DA Recommend Mounting Direction — Recommend Mounting Direction

PWM-90-48DA ◎Connection for Blank-type — ◎Connection for Blank-type

Typical applications

LED strip lighting
Indoor LED lighting
LED decorative lighting
LED architecture lighting

Downloads

Datasheet1

PWM-90-48DA datasheetpwm_90_spec.pdf · 2019-12-26 edition PDF Download

Certificates5

UL Certificate (PWM-90)(EN) PDF Download

CB Certificate (PWM-90)(EN) PDF Download

EMC Certificate (PWM-90)(EN) PDF Download

ENEC Certificate (PWM-90)(EN) PDF Download

ErP Certificate (PWM-90)(EN) PDF Download

Test reports1

Test Report(PWM-90-48)(EN) PDF Download

Catalogues1

Mean Well LED Driver Catalog PDF Download

FAQ

Can I use the PWM-90-48DA to drive 48V LED strips outdoors?

Yes. The PWM-90-48DA carries an IP67 waterproof rating, meaning it is protected against temporary immersion in water and continuous dust ingress. It is suitable for outdoor LED strip installations such as facade lighting, signage, or covered architectural features where moisture exposure is expected.

Is the PWM-90-48DA suitable for powering large-format LED channel letter signage?

Yes. The unit delivers 90W at 48V constant voltage with PWM-style output, which makes it compatible with 48V LED modules used in illuminated channel letter and cabinet signage. The IP67 rating also allows installation in sign cabinets exposed to condensation or outdoor conditions.

Can I use this supply for a DALI-controlled 48V LED strip lighting project?

Yes. The PWM-90-48DA includes a DALI dimming interface, so it can receive dim commands from a DALI controller or building automation system. This makes it well suited for architectural lighting applications where centralized DALI dimming control is required.

How many meters of 48V LED strip can the PWM-90-48DA power?

The PWM-90-48DA provides a maximum of 90W at 48V. To calculate compatible strip length, divide 90W by your strip's rated power per meter — for example, a 10 W/m strip supports up to 9 meters. Always check your specific strip's rated power per meter before finalizing the design.

What input voltage range does the PWM-90-48DA accept?

The PWM-90-48DA accepts 90–305VAC input, covering both standard 120VAC (North America) and 230VAC (Europe/Asia) mains without any manual switching. This wide-range input makes it suitable for international deployments.

Can the PWM-90-48DA operate in extreme temperature environments such as cold storage or rooftop installations?

Yes. The operating temperature range is -40°C to +85°C, so it can handle harsh cold environments like freezer rooms as well as hot rooftop or industrial enclosures. The IP67-rated fully isolated plastic case provides additional protection in these demanding settings.

How does the PWM-90-48DA differ from other 48V models in the PWM series?

Within the 48V PWM line, the PWM-40-48 delivers 40W (0.84A), the PWM-60-48 delivers 60W (1.25A), the PWM-90-48 and PWM-90-48DA both deliver 90W (1.88A), and the PWM-120-48 and PWM-120-48DA deliver 120W (2.5A), while the PWM-200-48 family reaches 200W (4.17A). The PWM-90-48DA is the standard DALI-controllable 90W option; the PWM-90-48DA2 supports the newer DALI2 protocol, and the PWM-90-48 has no DALI interface.

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Model	Power	Voltage	Current	IP Rating
Mean Well PWM-90-24DA2 Power Supply 90W 24V DALI2 3.75A	90W	24V	3.75A	IP67	View
Mean Well PWM-90-24 Power Supply 90W 24V - Dimmable 3.75A	90W	24V	3.75A	IP67	View
Mean Well PWM-90-24DA Power Supply 90W 24V - DALI 3.75A	90W	24V	3.75A	IP67	View
Mean Well PWM-90-12DA2 Power Supply 90W 12V DALI2 7.5A	90W	12V	7.5A	IP67	View
Mean Well PWM-90-48DA2 Power Supply 90W 48V DALI2 1.88A	90.24W	48V	1.88A	IP67	View
Mean Well PWM-90-48 Power Supply 90W 48V - Dimmable 1.88A	90.24W	48V	1.88A	IP67	View
Mean Well PWM-90-36DA Power Supply 90W 36V - DALI 2.5A	90W	36V	2.5A	IP67	View
Mean Well PWM-90-36 Power Supply 90W 36V - Dimmable 2.5A	90W	36V	2.5A	IP67	View
Mean Well PWM-90-12DA Power Supply 90W 12V - DALI 7.5A	90W	12V	7.5A	IP67	View
Mean Well PWM-90-12 Power Supply 90W 12V - Dimmable 7.5A	90W	12V	7.5A	IP67	View

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