Document Overview: HDM15-T Series Triple Output DC-DC Converter

This document describes the HDM15-T series, encapsulated modules that provide triple output DC-DC conversion. The key selling points are their compact size, triple output capability, wide input range, and robust design.

1. General Features:

️· Triple Output: Provides three different voltage outputs simultaneously.
️· Wide Input Range: Accepts a wide range of DC input voltages (4:1 and 2:1), making it adaptable to various power sources.
️· 15W Isolated Output: Provides 15 watts of power, and outputs are electrically isolated from each other.
️· Metal Shielding: Provides EMI (Electromagnetic Interference) protection.

2. Specification Details:

️· Input:
- Input Range: Wide 4:1 & 2:1
- Input Voltage: Nominal 12V/24V/48V DC
- Input Fuse: Requires external fuse (sizing instructions provided – see below)
- Input Filter: Pi-Network
- Overvoltage Shutdown: Optional, factory-set
- Undervoltage Shutdown: 8V DC
- Isolation Resistor: 1000 Mega Ohms
- Isolation Voltage: 1500 VDC
- EMI: Six-sided metal shielding
- Remote On/Off: TTL/CMOS compatible, allowing control by external logic
️· Output:
- Output Voltage: (Specific voltages depend on the model – see Ratings Chart below)
- Output Current: (Specific currents depend on the model – see Ratings Chart)
- Voltage Accuracy: Main outputs: ±2.0% typical; Auxiliary output: ±5.0% typical.
- Line Regulation: ±0.5% typical
- Load Regulation: Main Outputs: ±2.0% typical, Auxiliary: ±5.0%
- Noise & Ripple: Typically 100mV for 3.3V/5.0V outputs; 1.0% for others.
- Overvoltage Protection (OVP): Built-in on main outputs
- Short Circuit Protection: Power foldback, self-recovering
- Overload Protection: About 130% overrange, foldback type
️· General:
- Efficiency: Typically 80%, varies with input.
- Operating Temperature: -25°C to +71°C (convection cooling). Forced air is recommended for higher temperatures and confined spaces.
- Switching Frequency: 100kHz
- Temperature Coefficient: 0.02%/°C
- Transient Response: Less than 200µs from full to half load.
- Cooling: Convection cooling.
- Case: Black coated steel with non-conductive metal base.
- Weight: 65.0g (2.4oz)
- Humidity: Up to 95% RH, non-condensing

3. Input/Output & Voltage/Current Ratings Chart (Example - this is where model-specific information would be. I can't provide exact numbers because the document doesn't present them in a clear table, but here's what would be included):

The chart would typically list:

️· Model Number (e.g., HDM15-T123, HDM15-T245, etc.)
️· Input Voltage Range (e.g., 12V, 24V, 48V DC)
️· Output 1 Voltage
️· Output 1 Current
️· Output 2 Voltage
️· Output 2 Current
️· Output 3 Voltage
️· Output 3 Current

Fuse Sizing:

️· Determine the maximum DC current drains at the lowest input voltage and full load.
️· Add 20-25% to this value to determine the appropriate fuse size.

Important Notes:

️· Measurements are taken at nominal input, full load, and 25°C unless stated otherwise.
️· Line regulation is measured from high to low input voltage at full load.
️· Load regulation is measured from full load to half load at nominal input.
️· Forced air cooling is recommended for higher temperatures and confined areas.