DATASHEET Rev. A DH40 SERIES 2:1 Wide Input Voltage Ranges Single & Dual Outputs, Efficiency up to 92% 2.0” x 1.0” x 0.4” Encapsulated Shielded Metal Package 40 Watt DC/DC Power Converters FEATURES RoHS Compliant 2.0” x 1.0” x 0.4” Package Size 40 Watts Output Power Trimmable Output Voltage 2:1 Wide Input Voltage Ranges Shielded Metal Case with Isolated Base-plate Single & Dual Outputs -40°C to +80°C Operating Temperature Range Remote ON/OFF Control Over Load, Short Circuit, Over Voltage, and Over 1500VDC I/O Isolation Temperature Protection High Efficiency up to 92% UL/IEC/EN 60950-1 Safety Approvals (Pending) Under Voltage Lockout (UVLO) Heatsink (Optional) DESCRIPTION The DH40 series is the latest generation of high performance DC/DC converters setting a new standard concerning power density. These converters offer 40 Watts of continuous output power in a 2.0” x 1.0” x 0.4” encapsulated, shielded metal package. The DH40 series has single and dual output models with 2:1 wide input voltage ranges of 9-18VDC, 18-36VDC, and 36-75VDC. Advanced circuit topology provides a very high efficiency up to 92% and an operating temperature range of -40°C to +80°C. Further features include remote on/off, trimmable output voltage, under-voltage lockout as well as over load, over voltage, short circuit, and overtemperature protection. These converters are RoHS compliant and are ideal for use in battery operated equipment, instrumentation, distributed power architectures in communication and industrial electronics and many other space critical applications. 10/31/2012 Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 Page 1 of 13 DH40 Series Single & Dual Outputs 2:1 Wide Input Ranges 40 Watt DC/DC Power Converters Rev. A SPECIFICATIONS: DH40 SERIES All specifications are based on 25°C, Nominal Input Voltage, and Maximum Output Current unless otherwise noted. We reserve the right to change specifications based on technological advances. SPECIFICATION TEST CONDITIONS Min Typ Max 9 18 36 -0.7 -0.7 -0.7 12 24 48 18 36 75 25 50 100 9 18 36 Unit INPUT SPECIFICATIONS Input Voltage Range Input Surge Voltage (1s max.) Start-up Threshold Voltage Under Voltage Lockout (UVLO) Start-up Time Power Up Remote On/Off Input Current Reflected Ripple Current (Page 11) Internal Filter Input Fuse (Note 3) Short Circuit Current OUTPUT SPECIFICATIONS Output Voltage Output Voltage Balance Line Regulation Load Regulation Load Cross Regulation (Dual Output Models) Output Voltage Setting Accuracy Output Voltage Trim (Page 10) Output Power Output Current 12VDC nominal input models 24VDC nominal input models 48VDC nominal input models 12VDC nominal input models 24VDC nominal input models 48VDC nominal input models 12VDC nominal input models 24VDC nominal input models 48VDC nominal input models 12VDC nominal input models 24VDC nominal input models 48VDC nominal input models Dual Output Models, Balanced loads Low line to high line at full load Single Output Models Minimum load to full load Dual Output Models Asymmetrical load 25% / 100% full load At 50% load and nominal Vin % of nominal output voltage Ripple & Noise (0-20MHz) (Page 12) Measured with a 1µF M/C and a 10µF T/C in parallel Transient Recovery Time (Note 2) Temperature Coefficient PROTECTION Input Polarity Protection Over Voltage Protection (page 11) Over Load Protection Thermal Protection Short Circuit Protection REMOTE ON/OFF (Page 11) Converter On Positive Logic Converter Off On Control Input Current Off Control Common Stand-by Input Current 10/31/2012 VDC 3.3 & 5VDC Output Models 12, 15, & 24VDC Output Models Dual Output Models 25% load step change Shutdown temperature Vctrl = 5.0V Vctrl = 0V Nominal Vin Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 VDC 30 30 ms See Table See Table LC Filter 8000mA slow-blow type 4000mA slow-blow type 2000mA slow-blow type Hiccup mode 1.5Hz typ. for EN55022 Class A compliance see page 3 12VDC nominal input models 24VDC nominal input models 48VDC nominal input models Single Output Models Dual Output Models VDC 8.3 16.5 33 Nominal Vin and constant resistive load Minimum Load VDC See Table ±2.0 ±0.5 ±0.5 ±1.0 ±5.0 ±1.0 % % % % %Vnom % ±10 See Table See Table No minimum load required See Table 100 150 150 250 ±0.02 mVp-p µs %/°C none See Table Current limitation at 150% typ. of Io max., hiccup 110 °C Hiccup, automatic recovery 3.5~12V or open circuit 0V ~ 1.2 or short circuit 0.5 -0.5 Referenced to negative input 2.5 mA mA Page 2 of 13 DH40 Series Single & Dual Outputs 2:1 Wide Input Ranges 40 Watt DC/DC Power Converters Rev. A SPECIFICATIONS: DH40 SERIES All specifications are based on 25°C, Nominal Input Voltage, and Maximum Output Current unless otherwise noted. We reserve the right to change specifications based on technological advances. SPECIFICATION TEST CONDITIONS GENERAL Efficiency Switching Frequency Isolation Voltage (Input to Output) Isolation Resistance Isolation Capacitance Maximum Capacitive Load ENVIRONMENTAL SPECIFICATIONS Min 60 seconds 500VDC 100kHz, 1V KHz VDC MΩ pF 1500 1000 1500 See Table Operating Temperature (W/ Heatsink) (see derating curves on page 5) Natural air convection (20LFM) Nominal Vin and full load 3.3VDC Output Models 5, 12, & 15VDC Output Models Dual Output Models 3.3VDC Output Models 5, 12, & 15VDC Output Models Dual Output Models -40 -40 -40 -40 -40 -40 12.0 9.0 8.0 6.0 10.0 5.4 4.5 3.0 Natural convection (20LFM) 100LFM convection 200LFM convection 400LFM convection Natural convection (20LFM) 100LFM convection 200LFM convection 400LFM convection Case Temperature Storage Temperature Humidity (non-condensing) RFI Cooling Lead Temperature MTBF (calculated) PHYSICAL SPECIFICATIONS Weight Dimensions (L x W x H) Case Material Base Material Potting Material Pin Material Heatsink (optional) SAFETY Safety Approvals (pending) Unit 320 Natural air convection (20LFM) Nominal Vin and full load Thermal Impedance (W/ Heatsink) Max See Table (see efficiency curves on pages 6~8) Operating Temperature (W/O Heatsink) (see derating curves on page 5) Thermal Impedance (W/O Heatsink) Typ +66 +46 +40 +73 +57 +52 °C °C/W °C/W +105 +125 95 Six-sided shielded metal case natural convection 260 -50 Natural convection is about 20LFM and is not still air (0LFM) 1.5mm from case for 10 seconds MIL-HDBK-217F at 25°C, Ground Benign °C 328,000 °C °C % RH °C hours 1.06oz (30g) 2.0 x 1.0 x 0.43 inches (50.8 x 25.4 x 11 mm) Aluminum alloy, black anodized coating FR4 PCB (flammability to UL 94V-0 rated) Epoxy (UL94-V0) Copper alloy with gold plate over nickel underplate See page 9 UL/cUL 60950-1 recognition (CSA certificate), IEC/EN 60950-1 (CB-scheme) EMI-FILTER TO MEET EN55022, CLASS A; FCC PART 15, LEVEL A Conducted and Radiated Emissions EN55022 Class A C3 C3 -INPUT -OUTPUT -INPUT C1 DH40 Module Single Output -OUTPUT C1 +OUTPUT +INPUT DH40 Module Dual Output +INPUT COMMON +OUTPUT C2 C2 Part No DH12SXX-40 DH24SXX-40 DH48SXX-40 Part No DH12DXX-40 DH24DXX-40 DH48DXX-40 C1 10µF/25V 1812 MLCC 4.7µF/50V 1812 MLCC 2.2µF/100V 1812 MLCC C1 10µF/25V 1812 MLCC 4.7µF/50V 1812 MLCC 2.2µF/100V 1812 MLCC C2, C3 1000pF/2KV 1808 MLCC 1000pF/2KV 1808 MLCC 1000pF/2KV 1808 MLCC 10/31/2012 C2, C4 1000pF/2KV 1808 MLCC 1000pF/2KV 1808 MLCC 1000pF/2KV 1808 MLCC Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 Page 3 of 13 DH40 Series Single & Dual Outputs 2:1 Wide Input Ranges 40 Watt DC/DC Power Converters Rev. A MODEL SELECTION TABLE SINGLE OUTPUT MODELS Output Voltage Output Current Input Current Output Power Efficiency Maximum Capacitive Load 3.9 VDC 26.4W 89% 21000µF 6.2 VDC 40W 89% 13600µF 15 VDC 40W 89% 2400µF 3.7A 18 VDC 40W 90% 1500µF 160mA 3.79A 30 VDC 40W 88% 600µF 8A 75mA 1.22A 3.9 VDC 26.4W 90% 21000µF 0mA 8A 80mA 1.83A 6.2 VDC 40W 91% 13600µF 12 VDC 0mA 3.33A 85mA 1.83A 15 VDC 40W 91% 2400µF DH24S15-40 15 VDC 0mA 2.67A 75mA 1.83A 18 VDC 40W 91% 1500µF DH24S24-40 24 VDC 0mA 1.67A 85mA 1.85A 30 VDC 40W 90% 600µF DH48S3.3-26 3.3 VDC 0mA 8A 40mA 610mA 3.9 VDC 26.4W 90% 21000µF 5 VDC 0mA 8A 50mA 920mA 6.2 VDC 40W 91% 13600µF 12 VDC 0mA 3.33A 50mA 910mA 15 VDC 40W 92% 2400µF DH48S15-40 15 VDC 0mA 2.67A 50mA 910mA 18 VDC 40W 92% 1500µF DH48S24-40 24 VDC 0mA 1.67A 50mA 920mA 30 VDC 40W 90% 600µF Output Power Efficiency Maximum (1) Capacitive Load ±15 VDC 40W 88% 1200µF* ±18 VDC 40W 88% 750µF* ±15 VDC 40W 89% 1200µF* ±18 VDC 40W 89% 750µF* ±15 VDC 40W 89% 1200µF* ±18 VDC 40W 89% 750µF* Model Number Input Voltage Min Max 3.3 VDC 0mA 8A 120mA 2.47A 5 VDC 0mA 8A 160mA 3.75A 12 VDC 0mA 3.33A 160mA 3.75A DH12S15-40 15 VDC 0mA 2.67A 150mA DH12S24-40 24 VDC 0mA 1.67A DH24S3.3-26 3.3 VDC 0mA 5 VDC DH12S3.3-26 DH12S5-40 DH12S12-40 12 VDC (9 – 18 VDC) DH24S5-40 DH24S12-40 24 VDC (18 – 36 VDC) DH48S5-40 DH48S12-40 48 VDC (36 – 75 VDC) No Load Max Load Reflected Ripple Over Voltage Current (Typ) Protection 50mA 30mA 20mA DUAL OUTPUT MODELS Model Number Input Voltage DH12D12-40 Output Voltage Output Current Min Max Input Current Reflected Ripple Over Voltage Protection No Load Max Load Current (Typ) 12 VDC ±12 VDC ±145mA ±1.67A DH12D15-40 (9 – 18 VDC) ±15 VDC ±110mA ±1.33A 60mA 3.79A DH24D12-40 24 VDC ±12 VDC ±145mA ±1.67A 50mA 1.87A DH24D15-40 DH48D12-40 DH48D15-40 70mA 3.79A 50mA 30mA (18 – 36 VDC) ±15 VDC ±110mA ±1.33A 45mA 1.87A ±12 VDC ±145mA ±1.67A 65mA 940mA 48 VDC (36 – 75 VDC) ±15 VDC ±110mA ±1.33A 20mA 65mA 940mA NOTES 1. “*” for each output 2. Transient recovery time is measured to within 1% error band for a step change in output load from 75% to 100%. 3. All DC/DC converters should be externally fused at the front end for protection. 4. To order the converter with a heatsink, please add the suffix “HS” to the model number. (Ex: DH12S12-40HS) 5. To order the converter without Remote on/off control, please add the suffix “N” to the model number. (Ex: DH12S12-40N) 10/31/2012 Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 Page 4 of 13 DH40 Series Single & Dual Outputs 2:1 Wide Input Ranges 40 Watt DC/DC Power Converters Rev. A POWER DERATING CURVES DHXXS3.3-26 Derating Curve without Heatsink DHXXS3.3-26 Derating Curve with Heatsink 100 100 Natural Convection 20LFM 80 Output Power (%) Output Power (%) 80 100LFM 60 200LFM 400LFM 40 ~ 0 20 40 60 80 20 60 80 100 110 DHXXS5-40, DHXXS12-40, DHXXS15-40 Derating Curve with Heatsink 100 Natural Convection 20LFM Natural Convection 20LFM 80 100LFM 60 200LFM 400LFM 40 100LFM 60 200LFM 400LFM 40 20 ~0 20 40 60 80 0 -40 100 110 ~ 0 20 40 60 80 Ambient Temperature (°C) Ambient Temperature (°C) DHXXDXX-40 Derating Curve without Heatsink DHXXDXX-40 Derating Curve with Heatsink 100 110 100 100 Natural Convection 20LFM 100LFM 60 Natural Convection 20LFM 80 Output Power (%) 80 200LFM 400LFM 40 100LFM 60 200LFM 400LFM 40 20 20 ~ 0 20 40 60 80 100 110 0 -40 ~ 0 Ambient Temperature (°C) 10/31/2012 40 DHXXS5-40, DHXXS12-40, DHXXS15-40 Derating Curve without Heatsink Output Power (%) Output Power (%) ~0 Ambient Temperature (°C) 20 Output Power (%) 400LFM Ambient Temperature (°C) 80 0 -40 200LFM 40 0 -40 100 110 100 0 -40 100LFM 60 20 20 0 -40 Natural Convection 20LFM Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 20 40 60 80 100 110 Ambient Temperature (°C) Page 5 of 13 DH40 Series Single & Dual Outputs 2:1 Wide Input Ranges 40 Watt DC/DC Power Converters Rev. A EFFICIENCY CURVES @ 25°C (12VDC INPUT MODELS) DH12S5-40 Efficiency vs Load Current 100 100 90 90 80 80 70 70 Efficiency (%) Efficiency (%) DH12S3.3-26 Efficiency vs Load Current 60 50 40 30 9V 20 10 20 30 40 50 60 70 80 90 40 30 9V 12V 10 18V 0 50 20 12V 10 60 18V 0 100 10 20 30 40 % of Full Load 90 80 80 70 70 Efficiency (%) Efficiency (%) 100 90 60 50 40 30 9V 20 10 0 50 60 100 70 80 90 60 50 40 30 9V 12V 18V 0 100 10 20 30 40 % of Full Load 50 60 70 80 90 100 % of Full Load DH12D12-40 Efficiency vs Load Current DH12D15-40 Efficiency vs Load Current 100 100 90 90 80 80 70 70 Efficiency (%) Efficiency (%) 90 10 18V 40 80 20 12V 30 70 DH12S15-40 Efficiency vs Load Current 100 20 60 % of Full Load DH12S12-40 Efficiency vs Load Current 10 50 60 50 40 30 9V 20 12V 10 18V 0 60 50 40 30 9V 20 12V 10 18V 0 10 20 30 40 50 60 70 80 90 100 10 20 30 40 % of Full Load 10/31/2012 50 60 70 80 90 100 % of Full Load Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 Page 6 of 13 DH40 Series Single & Dual Outputs 2:1 Wide Input Ranges 40 Watt DC/DC Power Converters Rev. A EFFICIENCY CURVES @ 25°C (24VDC INPUT MODELS) DH24S5-40 Efficiency vs Load Current 100 100 90 90 80 80 70 70 Efficiency(%) Efficiency(%) DH24S3.3-26 Efficiency vs Load Current 60 50 40 30 18V 20 10 20 30 40 50 60 70 80 90 40 30 18V 24V 10 36V 0 50 20 24V 10 60 36V 0 100 10 20 30 % of Full Load 90 80 80 70 70 Efficiency(%) Efficiency(%) 100 90 60 50 40 30 18V 20 10 0 50 60 70 80 90 40 30 18V 24V 36V 0 100 10 20 30 90 80 80 70 70 Efficiency(%) Efficiency(%) 100 60 50 40 30 18V 20 24V 10 36V 0 50 60 60 70 80 90 100 70 80 90 100 60 50 40 30 18V 20 24V 10 36V 0 10 20 30 % of Full Load 10/31/2012 50 DH24D15-40 Efficiency vs Load Current 90 40 40 % of Full Load 100 30 100 50 DH24D12-40 Efficiency vs Load Current 20 90 60 % of Full Load 10 80 10 36V 40 70 20 24V 30 60 DH24S15-40 Efficiency vs Load Current 100 20 50 % of Full Load DH24S12-40 Efficiency vs Load Current 10 40 40 50 60 70 80 90 100 % of Full Load Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 Page 7 of 13 DH40 Series Single & Dual Outputs 2:1 Wide Input Ranges 40 Watt DC/DC Power Converters Rev. A EFFICIENCY CURVES @ 25°C (48VDC INPUT MODELS) DH48S5-40 Efficiency vs Load Current 100 100 90 90 80 80 70 70 Efficiency(%) Efficiency(%) DH48S3.3-26 Efficiency vs Load Current 60 50 40 30 36V 20 10 20 30 40 50 60 70 80 90 40 30 36V 48V 10 75V 0 50 20 48V 10 60 75V 0 10 100 20 30 100 100 90 90 80 80 70 70 60 50 40 30 36V 20 10 0 40 50 60 70 80 90 30 36V 48V 75V 0 10 100 20 30 80 70 70 Efficiency(%) Efficiency(%) 90 80 60 50 40 30 36V 20 48V 10 75V 0 60 60 70 80 90 100 70 80 90 100 60 50 40 30 36V 20 48V 10 75V 0 10 20 30 % of Full Load 10/31/2012 50 DH48D15-40 Efficiency vs Load Current 100 50 40 % of Full Load 90 40 100 40 100 30 90 50 DH48D12-40 Efficiency vs Load Current 20 80 60 % of Full Load 10 70 10 75V 30 60 20 48V 20 50 DH48S15-40 Efficiency vs Load Current Efficiency(%) Efficiency(%) DH48S12-40 Efficiency vs Load Current 10 40 % of Full Load % of Full Load 40 50 60 70 80 90 100 % of Full Load Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 Page 8 of 13 DH40 Series Single & Dual Outputs 2:1 Wide Input Ranges 40 Watt DC/DC Power Converters Rev. A MECHANICAL DRAWING Unit: inches (mm) 0.40 (10.16) 0.20 0.20 (5.08) (5.08) Bottom View Ø0.04 (Ø1.00) 1.55 (39.4) 1 0.96 (24.5) 1.80 (45.72) 2.00 (50.8) 2 0.49 (12.41) PIN CONNECTIONS 3 Pin Single Output Dual Output 1 +Vin +Vin 2 -Vin -Vin 3 Remote On/Off Remote On/Off 4 +Vout +Vout 5 -Vout Common 6 Trim -Vout Tolerance: X.XX±0.01 (X.X±0.25) X.XXX±0.005 (X.XX±0.13) Pin Diameter: Ø0.04±0.002 (Ø1.0±0.05) 0.14 (3.6) 0.91 (23.2) Physical Characteristics Case Size: 2.0 x 1.0 x 0.43 inches (50.8 x 25.4 x 11 mm) 0.04 (1.1) 5 6 Case Material: Aluminum alloy, black anodized coating 4 Base Material: FR4 PCB (flammability to UL 94V-0 rated) 0.40 (10.16) 0.40 (10.16) 0.22 (5.5) 0.10 (2.54) Pin Material: Copper alloy with gold plate over nickel underplate 0.43 (11.0) Potting Material: Epoxy (UL94-V0) Weight: 1.06oz (30g) 1.00 (25.4) Heatsink Option (“HS” Suffix) Unit: inches (mm) Physical Characteristics Heatsink Material: Aluminum Finish: Black Anodized Coating Weight: 0.3oz (9g) Advantages of Adding a Heatsink 1.22 (31.1) 1. To help heat dissipation and increase the stability and reliability of DC/DC converters at high operating temperature atmosphere. 2. To upgrade the operating temperature of DC/DC converters, please refer to Derating Curves. 0.71 (18.0) max 1.22 (31.0) max Heatsink Thermal pad Clamp Converter 10/31/2012 Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 Page 9 of 13 DH40 Series Single & Dual Outputs 2:1 Wide Input Ranges 40 Watt DC/DC Power Converters Rev. A EXTERNAL OUTPUT TRIM Output can be externally trimmed by using the method shown below Trim Up 3 Trip Down 3 1 2 DH40 Module Bottom View DH40 Module Bottom View 5 6 1 2 4 6 R up 5 4 R down DHXXS3.3-26 TRIM TABLE DHXXS5-40 TRIM TABLE Trim Trimup Rup Trimdown Rdown Trim Trimup Rup Trimdown Rdown 1% 3.333V 70.50kΩ 3.267V 63.59kΩ 1% 5.050V 36.57kΩ 4.950V 45.53kΩ 2% 3.366V 29.28kΩ 3.234V 30.28kΩ 2% 5.100V 16.58kΩ 4.900V 20.61kΩ 3% 3.399V 16.87kΩ 3.201V 18.19kΩ 3% 5.150V 9.92kΩ 4.850V 12.31kΩ 4% 3.432V 10.90kΩ 3.168V 11.95kΩ 4% 5.200V 6.59kΩ 4.800V 8.15kΩ 5% 3.465V 7.38kΩ 3.135V 8.13kΩ 5% 5.250V 4.59kΩ 4.750V 5.66kΩ 6% 3.498V 5.06kΩ 3.102V 5.56kΩ 6% 5.300V 3.25kΩ 4.700V 4.00kΩ 7% 3.531V 3.42kΩ 3.069V 3.70kΩ 7% 5.350V 2.30kΩ 4.650V 2.81kΩ 8% 3.564V 2.20kΩ 3.036V 2.31kΩ 8% 5.400V 1.59kΩ 4.600V 1.92kΩ 9% 3.597V 1.25kΩ 3.003V 1.21kΩ 9% 5.450V 1.03kΩ 4.550V 1.23kΩ 10% 3.630V 0.49kΩ 2.970V 0.34kΩ 10% 5.500V 0.59kΩ 4.500V 0.68kΩ Trim Trimup Rup Trimdown Rdown Trim Trimup Rup Trimdown Rdown 1% 12.120V 368.92kΩ 11.880V 394.50kΩ 1% 15.150V 392.98kΩ 14.850V 572.67kΩ 2% 12.240V 161.92kΩ 11.760V 179.74kΩ 2% 15.300V 182.12kΩ 14.700V 248.63kΩ 3% 12.360V 94.97kΩ 11.640V 106.08kΩ 3% 15.450V 108.73kΩ 14.550V 145.60kΩ 4% 12.480V 61.86kΩ 11.520V 68.86kΩ 4% 15.600V 71.43kΩ 14.400V 94.97kΩ 5% 12.600V 42.12kΩ 11.400V 46.39kΩ 5% 15.750V 48.85kΩ 14.250V 64.87kΩ 6% 12.720V 29.00kΩ 11.280V 31.36kΩ 6% 15.900V 33.71kΩ 14.100V 44.92kΩ 7% 12.840V 19.66kΩ 11.160V 20.60kΩ 7% 16.050V 22.86kΩ 13.950V 30.72kΩ 8% 12.960V 12.66kΩ 11.040V 12.51kΩ 8% 16.200V 14.69kΩ 13.800V 20.10kΩ 9% 13.080V 7.23kΩ 10.920V 6.21kΩ 9% 16.350V 8.33kΩ 13.650V 11.86kΩ 10% 13.200V 2.89kΩ 10.800V 1.17kΩ 10% 16.500V 3.23kΩ 13.500V 5.28kΩ DHXXS12-40 TRIM TABLE 10/31/2012 DHXXS15-40 TRIM TABLE Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 Page 10 of 13 DH40 Series Single & Dual Outputs 2:1 Wide Input Ranges 40 Watt DC/DC Power Converters Rev. A TEST CONFIGURATIONS Input Reflected-Ripple Current Test Setup Input reflected-ripple current is measured with an inductor Lin (4.7µH) and Cin (220µF, ESR < 1.0Ω at 100 KHz) to simulate source impedance. Capacitor Cin offsets possible battery impedance. Current ripple is measured at the input terminals of the module. Measurement bandwidth is 0-500 KHz. To Oscilloscope + + Battery +Vin Lin Cin Current Probe +Out DC/DC Converter -Vin Load -Out Peak-to-Peak Output Noise Measurement Test Use a 1µF ceramic capacitor and a 10µF tantalum capacitor. Scope measurement should be made by using a BNC socket, measurement bandwidth is 0-20MHz. Position the load between 50mm and 75mm from the DC/DC converter. +Vin +Out Single Output DC/DC Converter -Vin Copper Strip Cout -Out +Vin Resistive Scope Load Copper Strip +Out Dual Output Com. DC/DC Converter -Vin -Out Copper Strip Cout Scope Resistive Load Copper Strip Cout Scope Copper Strip DESIGN & FEATURE CONSIDERATIONS Remote On/Off Positive logic remote on/off turns the module on during a logic high voltage on the remote on/off pin and off during a logic low. To turn the module on and off, the user must supply a switch to control the voltage between the on/off terminal and the –Vin terminal. The switch can be an open collector or equivalent. A logic low is 0V to 1.2V. A logic high is 3.5V to 12V. The maximum sink current at on/off terminal (Pin 3) during a logic low is -100µA Over Current Protection To provide protection in a fault (output overload) condition, the unit is equipped with internal current limiting circuitry and can endure overload for an unlimited duration. Over Voltage Protection The output over voltage clamp consists of control circuitry which is independent of the primary regulation loop that monitors the voltage on the output terminals. The control loop of the clamp has a higher voltage set point than the primary loop. This provides a redundant voltage control that reduces the risk of output over voltage. The OVP level can be found in the model selection table. 10/31/2012 Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 Page 11 of 13 DH40 Series Single & Dual Outputs 2:1 Wide Input Ranges 40 Watt DC/DC Power Converters Rev. A Input Source Impedance The power module should be connected to a low ac-impedance input source. Highly inductive source impedances can affect the stability of the power module. In applications where power is supplied over long lines and output loading is high, it may be necessary to use a capacitor at the input to ensure startup. Capacitor mounted close to the power module helps ensure stability of the unit, it is recommended to use a good quality low Equivalent Series Resistance (ESR < 1.0Ω at 100 KHz) capacitor of 33µF for the 12V input devices and a 10µF for the 24V and 48V devices. + +Vin + DC Power Source +Out DC/DC Converter Load Cin - -Vin -Out Output Ripple Reduction A good quality low ESR capacitor placed as close as possible across the load will give the best ripple and noise performance. To reduce output ripple, it is recommended to use 4.7µF capacitors at the output. + +Vin Single Output DC/DC Converter DC Power Source - +Out -Vin + +Vin Dual Output Com. DC/DC Converter DC Power Source Cout Load -Out - +Out -Vin -Out Cout Load Load Cout Maximum Capacitive Load The DH40 series has a limitation of maximum connected capacitance on the output. The power module may be operated in current limiting mode during start-up, affecting the ramp-up and the start-up time. The maximum capacitance can be found in the model selection table. Thermal Considerations Many conditions affect the thermal performance of the power module, such as orientation, airflow over the module, and board spacing. To avoid exceeding the maximum temperature rating of the components inside the power module, the case temperature must be kept below 105°C. The derating curves are determined from measurements obtained in a test setup. Position of air velocity probe and thermocouple 15mm / 0.6in 50mm / 2in Air Flow DUT COMPANY INFORMATION 10/31/2012 Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 Page 12 of 13 Rev. A DH40 Series Single & Dual Outputs 2:1 Wide Input Ranges 40 Watt DC/DC Power Converters Wall Industries, Inc. has created custom and modified units for over 50 years. Our in-house research and development engineers will provide a solution that exceeds your performance requirements on-time and on budget. Our ISO9001-2008 certification is just one example of our commitment to producing a high quality, well-documented product for our customers. Our past projects demonstrate our commitment to you, our customer. Wall Industries, Inc. has a reputation for working closely with its customers to ensure each solution meets or exceeds form, fit and function requirements. We will continue to provide ongoing support for your project above and beyond the design and production phases. Give us a call today to discuss your future projects. Contact Wall Industries for further information: Phone: Toll Free: Fax: E-mail: Web: Address: 10/31/2012 (603)778-2300 (888)587-9255 (603)778-9797 [email protected] www.wallindustries.com 5 Watson Brook Rd. Exeter, NH 03833 Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 Page 13 of 13