Polytron Devices

1 Watt Single and Dual OutputRegulated, 4:1 Wide Input Range

Extra small SMD or DIP package

With available 3000 Vdc input to output isolation, our 1 watt 4:1 wide input DSB(H)1 series DC-DC converter features no minimum load requirement, continuous short circuit protection and an extra small SMD or DIP package of 0.52" x 0.36" x 0.40". This series also meets UL60950-1, EN60950-1 and IEC60950-1 safety standards.

INPUT

• Operating input voltage range
• 12 Vdc nominal input: 4.5 - 18 Vdc
• 24 Vdc nominal input: 9 - 36 Vdc
• 48 Vdc nominal input: 18 - 75 Vdc
• Start up time
• Constant resistive load
• Power up: 5 - 10 mS
• Remote On/Off: 5 - 10 mS
• Input surge voltage, 1 sec. max.
• 12 Vdc nominal input: 25 Vdc
• 24 Vdc nominal input: 50 Vdc
• 48 Vdc nominal input: 100 Vdc
• Input filter: Capacitor type
• Input Reflected Ripple Current
• 12 Vdc nominal input: 15 mAp-p
• 24 Vdc nominal input: 10 mAp-p
• 48 Vdc nominal input: 5 mAp-p
• Remote On/Off: Control pin applied current via 1kΩ
• DC-DC ON: Open or high impedance
• DC-DC OFF: 2 - 4 Vdc
• Remote off input current: 2.5 Vdc

OUTPUT

• Voltage accuracy: ±1%
• Line regulation
• Low line to high line at full load: ±0.2%
• Load regulation
• No load to full load
• Single: ±1%
• Dual: ±1%
• 10% load to 90% load
• Single: ±0.5%
• Dual: ±0.8%
• Cross regulation
• Asymmetrical load 25%/100%FL, Dual: ±5%
• Ripple and noise
• Measured by 20 MHz bandwidth: 30 mVp-p
• Temperature coefficient: 0.02%/°C
• Transient response recovery time: 500µs
• Short circuit protection: continuous automatics recovery

GENERAL

• Isolation voltage, 1 min.
• Standard: 1600 Vdc
• Suffix "H": 3000 Vdc
• Isolation resistance: 500 Vdc
• Isolation capacitance
• Standard: 50 pF
• Suffix "H": 50 pF
• Switching frequency: 100 kHz
• Design meets safety standards: UL60950-1, EN60950-1, IEC60950-1

ENVIRONMENTAL

• Operating ambient temperature
• Without derating: -40 to 90°C
• With derating: 90 to 105°C
• Storage temperature range: -55 to 125°C
• Thermal shock: MIL-STD-810F
• Vibration: MIL-STD-810F
• Relative humidity: 5 to 95% RH
• Lead-free reflow solder process: IPC J-STD-020D
• Moisture sensitivity level (MSL): IPC J-STD-033B Level 2

PHYSICAL

• Dimensions: 0.52" x 0.36" x 0.40"
• Case material: Non-conductive, black, plastic
• Base material: Non-conductive, black, plastic
• Potting material: Silicone (UL94 V-0)
• Weight: 2.7 g (0.10 oz)
• MTBF: 8.401 x 106 hours, MIL-HDBK-217F, full load

EMC CHARACTERISTICS

• EMI
• Class A and B: EN55022
• ESD, EN61004-2, Perf. Criteria A
• Air: ±8kV
• Contact: ±6kV
• 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: 10Vr.m.s, Perf. Criteria A