HWD075DGE POWER-ONE | Alldatasheet

Document overview

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Technical content

Features

  • 75 Watts total output power
  • Wide input range 18V – 60V
  • Independent dual outputs
  • Flexible load sharing
  • Open-frame design with IMS board
  • Low profile – 12.7mm height
  • Start-up into high capacitive load
  • Output overcurrent protection (self re-start)
  • Output overvoltage protection (self re-start)
  • Overtemperature protection (self re-start)
  • Setpoint accuracy ± 2.0%
  • Output voltage trim adjust, independent for each output
  • Input/output isolation: 1500V
  • UL 1950 Recognition, CSA 22.2 No. 950-95 certification

Description

The HWD series provides onboard conversion of standard telecom and datacom input voltages into two isolated low-voltage outputs. These products offer a unique combination of wide input range, low profile, and high current capability. High efficiency and advanced thermal management enable these half-brick products to deliver full rated power at 55°C ambient temperature, with 200 LFM airflow, without the addition of heatsinks. Selection Chart Model Input voltage range, VDC Input current, max, ADC Output voltage, VDC Output rated current, ADC Output Ripple and Noise, mV p-p Efficiency % HWD075DGE-A 18-60 5.5 5.0/3.3 15/15 100 81% @ 24Vin 79% @ 48Vin

Absolute Maximum Ratings Table 1. Unless otherwise indicated, specifications apply over all input voltages, resistive load, and Tbp=+40°C. Table 2. Input Specifications Undervoltage Lockout Specification. Caution: This DC-DC converter is not internally fused. An external input fuse must always be used. Table 3. Output Specifications

Table 4. Feature Specifications Table 5. Environmental

Table 6. Isolation Specifications Table 7. EMI & Regulatory Agency Compliance Table 8. General Specifications Table 7. Physical

HWD Series – 75 Watt, Half-Brick DC/DC Converter Wide Input Range Dual Output REV. 9/01 Page 5 of 15 www.power-one.com Mechanical Diagram Pin Function 1 -Vin

2 Case

3 On/Off

7 Trim 2

10 Trim 1

Ordering Information

Options Suffixes to add to part number Positive- Standard, no suffix requiredRemote On/Off Negative- Add “N” suffix Negative- Standard, no suffix requiredTrim 0.18”- Standard, no suffix required 0.11”- Add “8” suffix Pin Length 0.15”- Add “9” suffix Notes 1. Consult factory for the complete list of available options. 2. Power-One products are not authorized for use as critical components in life support systems, equipment used in hazardous environments, or nuclear control systems without the express written consent of the President of Power-One, Inc. 3. Specifications are subject to change without notice.

HWD Series – 75 Watt, Half-Brick DC/DC Converter Wide Input Range Dual Output REV. 9/01 Page 7 of 15 www.power-one.com HWD15DGE Vin+ Vin- VIN C2 FC100V10 CASE GND C3 C4 C5 C6 Vo1 -Vo1 Vo2 -Vo2 LOAD1 LOAD2 Figure 3: Input filter configuration required to meet CISPR 22 Class A for Conducted Emissions. Part List for Input Filter Ref. Des Description Manufacture C1, 2 0.47uF @100V MLC Capacitor (1812) AVX or Equivalent (Equiv.) C3 100uF @ 100V Alum. Electrolytic CapacitorNichicon NRSZ Series or Equiv. C4 22uF@ 100V Alum. Electrolytic Capacitor United Chemicon KMG Series or Equiv. C5, 6 0.01uF MLC Capacitor AVX or Equiv. F1 FC100V10 Input Filter Module Power-One Feature Descriptions Output Overvoltage Clamp The output overvoltage clamp consists of a separate control loop, independent of the primary control loop. This control loop has a higher voltage setpoint than the primary loop. In a fault condition the converter goes into “Hiccup Mode”, and the output overvoltage clamp ensures that the output voltage does not exceed Vo,clamp,max. This secondary control loop provides a redundant voltage-control that reduces the risk of output overvoltage.

HWD Series – 75 Watt, Half-Brick DC/DC Converter Wide Input Range Dual Output REV. 9/01 Page 8 of 15 www.power-one.com Output Current Protection To provide protection in an output overload or short circuit condition, the converter is equipped with current limiting circuitry and can endure the fault condition for an unlimited duration. At the point of current-limit inception, the converter goes into “Hiccup Mode”, causing the output current to be limited both in peak and duration. The converter operates normally once the output current is brought back into its specified range. Enable Two enable options are available. Positive Logic Enable and Negative Logic Enable. Positive Logic Enable turns the converter on during a logic-high voltage on the enable pin, and off during a logic-low. Negative Logic Enable turns the converter of during a logic-high and on during a logic-low. Output Voltage Adjustment Output voltage adjustment is accomplished by connecting an external resistor between the Trim Pin and either the +Vo1 or –Vo1 Pins. With an external resistor between the Trim Pin and +Vo1 Pin (Radj-down) the output voltage set point (Vo,adj) decreases. The following equation determines the required external resistor value to obtain an adjusted output voltage: Radj dn Vo adj D−,() A ⋅ Vo nom Vo−, adj, B−  ohm⋅, Where Radj-down is the resistance value and A, B, and D are defined in Table 7. With an external resistor between the Trim Pin and –Vo1 Pin (Radj-up) the output voltage set point (Vo,adj) increases. The following equation determines the required external resistor value to obtain an adjusted output voltage: Raj up AD⋅ Vo adj D−,() C − B−  ohm⋅, Where Radj-up is the resistance value and A, B, C, and D are defined in Table 7: Table 8 Output Adjustment Variables. Output A B C D Vo1 4990 2000 2.5 2.5 Vo2 4990 2000 0.8 2.5

100 LFM

200 LFM

300 LFM

400 LFM

cooling can be verified by measuring the case temperature. ambient temperature (TA) for natural convection through 400 ft/min. 50 ft/min. Use of Figure 3 is shown in the following example. ambient temperature of 60 ºC. Determine PD (Figure 4): PD = 13 W. Figure 3. Power Derating Curve

Figure 4. Power Dissipation vs Output Power

Figure 5. Power Dissipation vs Full Load Distribution

Tb = 40 ºC, nominal input voltage, and rated load unless otherwise specified. Figure 6. Efficiency vs Output Power

Figure 7. Efficiency vs Full Load Power Distribution

Figure 8. Typical Turn-on Characteristics

Figure 9. Typical Turn-off Characteristics