Power Supplies

2-Watt Single- and Dual-Output 4:1 Input Industrial DC-DCs

The HEB2 series of dc-dc converters from Polytron Devices features a selection of input ranges (4.5- to 18-Vdc, 9- to 36-Vdc and 18- to 75-Vdc), wide temperature range (-40 to +105º C) and high efficiency up to 82 percent. Housed in a SIP 8 package, devices have no minimum load requirement and include remote ON/OFF, short circuit protection and undervoltage protection.

The HEB2 series is CE marked and meets UL 60950-1, EN 60950-1 and IEC 60950-1 approvals. It is well-suited for industrial applications with the following EMC characteristics: EMI, EN55032 with external components Class A, Class B; ESD, EN61000-4-2 Air ±8kV and Contact ±6kV Perf. Criteria A; Radiated immunity, EN61000-4-3 10V/m Perf. Criteria A; Fast transient, EN61000-4-4 ±2kV Perf. Criteria A; Surge, EN61000-4-5: ±1kV, Perf. Criteria A; Conducted immunity, EN61000-4-6: 10Vrms, Perf. Criteria A; and Power frequency magnetic field, EN61000-4-8 100A/m continuous, 1000A/m 1 second Perf. Criteria A.

Input Specifications:

  • Operating input voltage range, Vdc
    • 4 Min., 12 Typ., 18 Max. 12Vin(nom)
    • 9 Min., 24 Typ., 36 Max. 24Vin(nom)
    • 18 Min., 48 Typ., 75 Max. 48Vin(nom)
  • Start up voltage, Vdc
    • 5 Max. 12Vin(nom)
    • 9 Max. 24Vin(nom)
    • 18 Max. 48Vin(nom)
  • Shutdown voltage, Vdc
    • 2 Min., 3 Typ., 4 Max. 12Vin(nom)
    • 6 Min., 7 Typ., 8 Max. 24Vin(nom)
    • 13 Min., 15 Typ., 17 Max. 48Vin(nom)
  • Start up time, ms: Constant resistive load
    • 10 Typ., 20 Max. Power up
    • 10 Typ., 20 Max. Remote ON/OFF
  • Input surge voltage, Vdc: 1 second, Max.
    • 25 Max. 12Vin(nom)
    • 50 Max. 24Vin(nom)
    • 100 Max. 48Vin(nom)
  • Input filter: Capacitor type
  • Remote ON/OFF
    • Open or high impedance, DC-DC ON
    • 2 Min., 3 Typ., 4 Max., DC-DC OFF, Ctrl pin applied current via 1k Ω
    • 5 Typ., Remote off input current

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Output Specifications

  • Voltage accuracy, %: ±1
  • Line regulation, %: ±0.2 Low Line to High Line at Full Load
  • Load regulation, %
    • ±1, No Load to Full Load, Single
    • ±1, No Load to Full Load, Dual
    • ±0.5, 10% load to 90% load, Single
    • ±0.8, 10% load to 90% load, Dual
  • Cross regulation, %: ±5 Asymmetrical load 25%/100%FL, Dual
  • Ripple and noise, mVp-p: 75 Typ. Measured by 20MHz bandwidth
  • Temperature coefficient, %/°C: ±0.02
  • Transient response recovery time, µs: 500 Typ. 25% load step change
  • Over load protection, %: 130 Min., 170 Typ., 230 Max. % of lout rated; Hiccup mode
  • Short circuit protection: Continuous, automatics recovery

You may also like: 1-Watt AEC-Q100 DC-DC Converter with 4.2kVdc Isolation

Polytron Devices Inc.
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