HBT060ZGHH POWER-ONE
Document overview
- Manufacturer or author: Provided By www.digicamel.com(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 12
Technical content
Features
- 60 Watts maximum total output power
- Three fully isolated outputs 5V/12V/12V
- 5V output provides up to 12 Amps
- (2) 12V outputs each provide up to 2.5 Amps
- Excellent cross regulation
- Low profile – 12.7 mm
- High efficiency topology, 88% Typical
- Output overcurrent & overvoltage protection
- Overtemperature protection
- Set point accuracy ± 2.0%
- 1500V Input/output isolation meets basic insulation requirements
- UL 1950 Recognized, CSA 22.2 No. 950-95 certified; TUV IEC950
Description
The HBT17ZGHH DC-DC Converter operates over an input voltage range of 33Vdc to 75Vdc and provides three isolated output voltages. The 5V output can provide a full 60W (12 Amperes) of output power and each 12V output can provide up to 30W (2.5 Amperes) of output power. The input is fully isolated from each output and each output is isolated from one another. The isolation of each output provides flexible output configurations and separate output returns, which are important in preventing cross-interference between different loads in system applications. The module has a typical full load efficiency of 88%. The two-board construction optimizes thermal performance. Power devices are connected to an Integrated Metal Substrate base plate to minimize thermal impedance and a separate control board is physically isolated from the hotter IMS board. This approach allows for lower average component temperatures on the control board and increases the overall reliability. The comprehensive standard feature set includes remote on/off, and output trim. 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
60 Watt Triple Output
Table 1. Absolute Maximum Ratings Unless otherwise indicated, specifications apply over all input voltages, resistive load, and Tbp=+40°C. Table 2. Input Specifications 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 Safety – Basic UL60950 Recognized, CAN/CSA C22.2 No. Table 8. General Specifications Table 9. Physical
HBT Series – Half-Brick DC/DC Converter 48V Input REV. 10/01 Page 5 of 12 www.power-one.com Feature Descriptions Output Over-voltage Clamp The output overvoltage clamp consists of a separate control loop, independent of the primary control loop. This control loop has a higher voltage set point than the primary loop. In a fault condition which creates an excessive output voltage, the converter goes into “Hiccup Mode” (turns off and restarts periodically in a pre- programmed fashion), 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 mechanism that prevents catastrophic voltages from occurring on the output under any single- fault condition. Output Current Protection To provide protection in an output overload or short circuit condition, the converter is equipped with a current limiting circuit, which can protect the converter from damage under a fault condition indefinitely. At the current-limit inception point due to an output overload, the converter goes into “Hiccup Mode” and limits both the peak output current and the duration of the operation. The converter recovers automatically to its normal operation once the output overload or short circuit is removed. Enable Two enable options are available-Positive Logic and Negative Logic. Positive Logic turns the converter on when a logic-high is present at the enable pin, and turns the converter off when a logic-low is present at the enable pin. Negative Logic turns the converter off when a logic-high is present at the enable pin, and turns the converter on when a logic-low is present at the enable pin. Output Voltage Adjustment Output voltage adjustment is accomplished by connecting an external resistor between the Trim Pin and the +Vo1 or –Vo1 Pins. With an external resistor (R adj-down) between the Trim Pin and +Vo1 Pin the output voltage set point (Vo,adj) decreases. The following equation determines the required external resistor value to obtain an adjusted output voltage: Note: Output Vo1 is the only trimable output. Output Vo2 and Vo3 only follow how Vo1 is trimmed. Radj dn Vo adj D−,() A ⋅ Vo nom Vo−, adj, B− ohm⋅, Where Radj-down is the trim-down resistance value and A, B, and D are constants defined in Table 10. With an external resistor (Radj-up) between the Trim Pin and –Vo1 Pin 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 R adj-up is the trim-up resistance value and A, B, C, and D are constants defined in Table 10: AB C D 4990 25500 2.5 2.5 Table 10 Output Adjustment Variables.
HBT Series – Half-Brick DC/DC Converter 48V Input REV. 10/01 Page 6 of 12 www.power-one.com Thermal Considerations The power converter operates in various thermal environments. Sufficient cooling should be provided to help ensure reliable operation of the converter. Major heat-dissipating components are thermally coupled to the metal substrate. Heat is removed from the metal substrate by conduction, convection, and radiation to the surrounding environment. Proper cooling can be verified by measuring the temperature of the substrate. It is recommended the substrate temperature be maintained below 100 ºC for reliable operation. When necessary, an additional heat sink can be attached to the substrate to achieve desired thermal performance. Heat Transfer Characteristics Increasing airflow over the converter enhances the heat transfer via convection. Figure 4 shows the maximum power that can be dissipated by the converter without exceeding the maximum substrate temperature versus local ambient temperature (T A). Use of Figures 4 and 5 to properly determine proper airflow for cooling the converter at a given output power and a maximum ambient temperature is illustrated in the following example. Example What is the minimum airflow required for the device operating with an input voltage range of 33V to 75V, an output power of 60 W, at a maximum ambient temperature of 70 ºC? Solution: Given: Vi = 33V-75V, Po = 60 W, TA = 70 ºC. Step 1 (Determining PD ): From Figure 5, the maximum power dissipation is 12W (occurs at Vin = 33V) Step 2 (Determine airflow): From Figure 4, to maintain the substrate temperature below 100C, the airflow has to be greater than 160LFM (interpolated between curves for 100LFM and 200LFM). Test Setup Figure 1 Input Reflected Ripple Current Test Set-up: Note: Measure input reflected-ripple current with a simulated inductance (Ltest) of 12 uH. Capacitor Cs offsets possible battery impedance. Measure current as shown above. BATTERY Cs 220 uF ESR < 0.1 OHM @ 20 ºC, 100 kHz Ltest 12 uH 22uF ESR < 0.7 OHM @ 20 ºC, 100 kHz Vi(+) Vi(-) TO CURRENT PROBE
HBT Series – Half-Brick DC/DC Converter 48V Input REV. 10/01 Page 7 of 12 www.power-one.com HBT17ZG HH- A Vi n+ Vi n- VI N C2 FC100V10 CASE GND C3 C4 C5 C6 Vo1 -V o 1 Vo2 -V o2 Vo3 -V o3 LOAD1 LOAD2 LOAD3 Figure 2: Output Ripple Measurement Test Set-up: Note: Use a 0.1uf ceramic capacitor. Scope measurement should be made using a BNC socket. Position loads between 51 mm and 76 mm (2 in. and 3 in.) from module. 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 Capacitor Nichicon 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 DUT LOAD1 LOAD2 LOAD3 0.1uf ceramic 0.1uf ceramic 0.1uf ceramic SCOPE SCOPE SCOPE COPPER STRIPS (2 to 3 inches) +Vo1 -Vo1 +Vo2 -Vo2 +Vo3 -Vo3
Figure 4. Maximum Allowable Power Dissipation to maintain substrate at 100 ºC Figure 5. Power Dissipation vs. Output Power (substrate temperature maintained at 100 ºC)
100 LFM
200 LFM
300 LFM
400 LFM
Figure 6. Power Dissipation vs. Full Load Distribution
Characteristic CurvesTA = 25 ºC, nominal input voltage, and rated load unless otherwise specified. Figure 7. Efficiency vs. Output Power
Characteristic CurvesTA = 25 ºC, nominal input voltage, and rated load unless otherwise specified. Figure 9. Typical Cross Regulation
HBT Series – Half-Brick DC/DC Converter 48V Input REV. 10/01 Page 12 of 12 www.power-one.com Mechanical Drawing PIN VIEW Tolerances: .xx ± .020 (.5) .xxx ± .010 (.25) Pin diameter: ± .0.002 (.05)
Ordering Information
Options Suffixes to add to part number Positive- Standard, no suffix requiredRemote On/Off Negative- Add “N” suffix 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. Pin Function