MEAN WELL MDS02 & MDD02 Series: 2W SIP DC-DC Medical Grade Unregulated Converters

Product Overview

The MDS02 and MDD02 series from MEAN WELL are 2W isolated and unregulated module type DC-DC converters packaged in a SIP7 format with an international standard pinout. These converters are designed for medical applications and offer features such as medical safety approval (1xMOPP/2xMOOP according to ANSI/AAMI ES60601-1), low patient leakage current (<2µA), and a wide operating temperature range of -40°C to +85°C.

Key features include:

• SIP7 package with international standard pinout
• Operating temperature range: -40°C to +85°C
• Medical safety approved (1xMOPP/2xMOOP) according to ANSI/AAMI ES60601-1
• Low patient leakage current: <2µA
• Protection: Short circuit (3 second max.)
• High I/O isolation: 6KVDC or 4.2KVAC (Reinforced isolation)
• Low cost
• 3 years warranty

Applications

These converters are suitable for various medical applications, including:

• Medical devices
• Medical oxygen monitors
• CT scanning equipment
• Medical carts
• Oral care equipment

Description

The MDS02 and MDD02 series provide 2W of isolated and unregulated DC-DC power conversion. They feature international standard pins, high efficiency up to 85%, and a wide working temperature range. With 6KVDC or 4.2KVAC I/P-O/P high isolation voltage, short circuit protection, and options for various input voltages (5V/12V/24V ±10%) and output voltages (5V/12V/15V for single output and ±5V/±9V/±12V/±15V for dual outputs), these converters are ideal for medical systems requiring ultra-low leakage current.

Model Encoding

The model encoding system helps identify specific configurations:

MDS02L-12

• Series name: MDS02 (Single Output)
• Input voltage: L (4.5 ~ 5.5Vdc)
• Output voltage: 12Vdc
• Rated wattage: 2W

For dual output models, the series name is MDD02, and the output voltage options include ±5V, ±9V, ±12V, and ±15V.

Model Selection Table

The following table details the available models and their specifications:

* For each output

Specifications

Input:

• Voltage Range: L: 4.5~5.5Vdc, M: 10.8~13.2Vdc, N: 21.6~26.4Vdc
• Surge Voltage (100ms max.): 5Vin models: 9Vdc; 12Vin models: 18Vdc; 24Vin models: 30Vdc
• Filter: Internal capacitor
• Protection: Fuse recommended (500mA Slow-Blow Type for all models)
• Voltage Accuracy: ±5.0%

Output:

• Rated Power: 2W
• Ripple & Noise: 75mVp-p (Note.2)
• Line Regulation: ±1.2% for 1% input variation (Note.3)
• Load Regulation: ±10% (Note.4)
• Switching Frequency (Typ.): 100KHz
• Protection Short Circuit: 3 second max.

Environment:

• Cooling: Free-air convection
• Working Temp.: -40~+85°C (Refer to "Derating Curve")
• Working Humidity: 20% ~ 90% RH non-condensing
• Storage Temp., Humidity: -55~+125°C, 10~95% RH non-condensing
• Temp. Coefficient: 0.02% / °C (0 ~ 85°C)
• Soldering Temperature: 1.5mm from case of 1~3sec./260°C max.
• Vibration: 10~500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes

Safety & EMC (Note.6):

• Safety Standards: UL60601-1, EAC TP TC 020/2011 approved
• Withstand Voltage: I/P-O/P: 6KVDC or 4.2KVAC
• Isolation Resistance: I/P-O/P: 100M Ohms / 500VDC / 25°C/70% RH
• Isolation Level: Primary-secondary: 1xMOPP / 2xMOOP when system input voltage is with 250VAC, 50/60Hz
• Isolation Capacitance (Typ.): 5pF
• EMC Emission: Conducted: Class B (BS EN/EN55011/CISPR11); Radiated: Class B (BS EN/EN55011/CISPR11)
• EMC Immunity: ESD: Level 2, ±8KV contact (BS EN/EN61000-4-2)

Others:

• MTBF: 350Khrs (MIL-HDBK-217F, 25°C)
• Dimension (L*W*H): 19.5*9.8*12.5mm (0.77*0.386*0.492 inch)
• Case Material: Non-Conductive black plastic (UL 94V-0 rated)
• Packing: 4.2g; 25pcs/per tube, 3000pcs/120 tube/per carton

Notes:

1. All parameters are specified at normal input (L:5Vdc, M:12Vdc, N:24Vdc), rated load, 25°C, 70% RH ambient.
2. Ripple & noise are measured at 20MHz by using a 12" twisted pair terminated with a 0.1µF & 47µF capacitor.
3. Line regulation is measured from low line to high line at rated load.
4. Load regulation is measured from 10% to 100% rated load.
5. Patient leakage current (2µA max.) and reinforced isolation is based on a 250VAC, 50/60Hz system input voltage.
6. The final equipment must be re-confirm that it still meet EMC directives. For guidance on how to perform these EMC tests, please refer to "EMI testing of component power supplies." (as available on http://www.meanwell.com)

* Product Liability Disclaimer: For detailed information, please refer to https://www.meanwell.com/service Disclaimer.aspx

Mechanical Specification

All dimensions are in mm (inch) unless otherwise specified.

• Tolerance: x.x ±0.25mm (x.xx ±0.01")
• x.xx ±0.10mm (x.xxx ±0.004")
• Pin pitch tolerance: ±0.05mm (±0.002")

Front View:

[Diagram: Front view of the SIP7 package showing pin 1, pin 2, pin 5, and pin 7. Dimensions indicated: 19.5(0.77) length, 9.8(0.386) width, 12.5(0.492) height. Pin pitch 2.54(0.1) horizontally.]

Bottom View:

[Diagram: Bottom view of the SIP7 package showing pinout 1, 2, 5, 6, 7. Dimensions indicated: 15.24(0.6) between pins 1 and 7, 2.54(0.1) pin pitch.]

Plug Assignment

EMC Suggestion

EMC typical recommended circuit (Class B):

[Diagram: A schematic showing an EMC recommended circuit. Input voltage (Vin) connects through LDM (inductor) and capacitors C1, C2 to the DC/DC converter. Output (Vout) is connected through capacitor C3 to the load. GND is connected.]

Recommended typical circuit parameters:

Table 1:

Table 2:

Derating Curve

[Diagram: A derating curve graph showing Load (%) on the Y-axis and Ambient Temperature Ta (°C) on the X-axis. The curve indicates that at 85°C, the load capacity is 100% under natural convection.]

Packing

Standard Tube Packing

[Diagram: Illustration of standard tube packing for the converters. Shows a product inside a tube with tube plugs at the ends. Includes dimensions for the product and tube.]

Unit: mm

CARTON Dimensions: L600 x W285 x H225

Installation Manual

For detailed installation instructions, please refer to: http://www.meanwell.com/manual.html