Draft - Isolated 0-10V to 12V-24V DC Power Converter
Isolated 0-10V to 12V-24V DC Power Converter
Industrial-grade isolated analog-to-power converter that translates a standard 0–10V DC control signal into a proportional, high-current 12V to 24V DC power output (up to 3A). It provides 1kV RMS galvanic isolation to eliminate ground loops between control PLCs and high-draw industrial actuators, proportional valves, blowers, and DC motors.
Key Features
- 0–10V analog input to 12V–24V DC power output scaling
- Up to 3.0A continuous load current (72W peak output at 24V DC)
- 1.0 kV RMS galvanic isolation between control input and power output
- Wide 28V to 60V DC field power supply input
- High efficiency 150 kHz buck switching regulator with closed-loop control
- Cycle-by-cycle over-current limiting, thermal shutdown, and TVS protection
- Isolates PLC analog cards from high-current actuator noise
- Compact 35 mm DIN rail mountable enclosure
- Dimensions: 110 mm × 74 mm × 22 mm
Ordering Information
| Product Code | Description |
|---|---|
| APC-10V-1224 | Isolated 0-10V to 12V-24V DC Power Converter (Max 3A @ 48V DC Input) |
| AC-420-420 | Signal Isolator 4-20mA to 4-20mA Current Loop Isolator |
| USS10V24V-D | Voltage Source Simulator 0-10V (Digital Display) |
| USS20M24V-D | Current Source Simulator 0/4 to 20mA (Digital Display) |
| SPD-24V-DC | 24V DC Power Line Surge Protection Device (DIN Rail) |
Applications
- Proportional Valves & Actuators: Drives 24V DC proportional hydraulic and pneumatic valves requiring a non-zero minimum bias (12V) and full-scale control (24V).
- Industrial DC Fan & Blower Speed Control: Provides smooth speed modulation for 24V DC industrial fans with 12V low-speed continuous ventilation.
- Brushed DC Motor Speed Regulation: Translates 0–10V PLC analog velocity commands to a regulated 12V–24V armature power supply.
- Heating Element & Thermal Modulation: Delivers controlled DC power to resistive heaters based on 0–10V PID control loops.
- High-Current Coil & Positioner Driving: Safely bridges low-power PLC analog output modules with high-current field coils without external power amplifier stages.
Specifications
| Parameter | Value |
|---|---|
| Mounting Type | 35 mm DIN Rail Mounting |
| Dimensions | 110 mm x 74 mm x 22 mm (L x W x H) |
| Enclosure Material | Industrial ABS plastic (Flame-retardant) |
| Operating Temperature | -10 °C to +60 °C (Derate load current above 50 °C) |
| Storage Temperature | -40 °C to +85 °C |
| Relative Humidity | 5% to 95% RH (non-condensing) |
Electrical Specifications
| Parameter | Specification |
|---|---|
| Main Power Supply (\(V_{\text{SUPPLY}}\)) | 48V DC Nominal (Accepts 28V to 60V DC) |
| Quiescent Current Consumption | < 35 mA @ 48V DC (No output load) |
| Power Conversion Topology | Step-Down Switching Regulator + Op-Amp Control |
| Switching Frequency | 150 kHz (Fixed) |
| Galvanic Isolation Voltage | 1,000 V RMS (1 minute duration, Input to Power/Output domain) |
| Reverse Polarity Protection | Integrated series diode protection on 48V supply terminals |
Input/Output Specifications
| Parameter | Specification |
|---|---|
| Control Input Voltage (\(V_{\text{IN}}\)) | 0.0 V to 10.0 V DC (Standard industrial analog range) |
| Input Impedance | > 100 kΩ (Input current < 0.1 mA from controller) |
| Maximum Input Voltage Rating | ±30 V DC continuous without damage |
| Regulated Output Voltage (\(V_{\text{OUT}}\)) | 12.0 V to 24.0 V DC |
| Transfer Function | \(V_{\text{OUT}} = 12.0\,\text{V} + (1.20 \times V_{\text{IN}})\) |
| Maximum Peak Output Current | 3.0 Amps |
| Maximum Continuous Output Current | 1.5 ~ 2.0 Amps |
| Maximum Continuous Output Power | 48 Watts (24V @ 3A) |
| Voltage Scaling Accuracy | < ±0.5% of Full Scale @ 25 °C ambient |
| Linearity Error | < ±0.3% of Full Scale across entire 12V–24V span |
| Temperature Coefficient | < 100 ppm / °C |
| Output Voltage Ripple & Noise | < 100 mVp-p (at 150 kHz switching frequency, full load) |
| Step Response Time | < 25 ms (10% to 90% output step) |
Isolation & Protection Specifications
| Parameter | Value | Standard / Notes |
|---|---|---|
| Galvanic Isolation | 1,000 V RMS | Optical barrier between 0–10V control input and 48V/24V power domain |
| Thermal Protection | Integrated | Automatic thermal shutdown (\(T_J > 150\text{ °C}\)) with auto-recovery |
| Supply Reverse Polarity | Integrated | Series protection diode on 48V power supply terminals |
| Transient Voltage Clamping | 600W TVS | High-surge TVS diodes across power supply and analog input lines |
| ESD Immunity | ±15 kV Air / ±8 kV Contact | IEC 61000-4-2 Level 4 industrial immunity |
Mechanical Dimensions
Terminal Details & Port Pinouts
Terminal Connections
| Terminal Block | Pin | Label | Signal | Description |
|---|---|---|---|---|
| Control Input | 1 | IN+ | 0–10V (+) | Analog Voltage Control Input (+) |
| 2 | IN- | GND | Control Input Ground Return (-) | |
| Power Input | 3 | VIN+ | +48V DC | Auxiliary DC Field Supply Input (28V to 60V DC) |
| 4 | VIN- | 0V | Power Supply Ground Return | |
| Power Output | 5 | VOUT+ | +12~24V | Regulated DC Power Output (+) |
| 6 | VOUT- | 0V | Regulated Output Ground Return (-) |
LED Indications and Diagnostics
| LED | Color | Status | Description |
|---|---|---|---|
| PWR | Green | ON | Field power input connected and regulated output active |
Wiring Diagrams
Note: All images and connection diagrams shown are for illustrative purposes only and may differ from the actual product.
Revision History
| Revision | Date | Description of Change |
|---|---|---|
| Rev 1.0 | 2026-09-09 | Initial datasheet release |
Get the latest version of this datasheet : click here..
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