ROHM AC-DC Converter Block Diagram Owner's Manual
Summary
Efficiently convert AC power to stable DC output using this integrated switching regulator module. The device features chopper-based technology, enabling both positive and negative voltage supplies for reliable performance in various applications. This technical manual provides detailed operational principles, circuit diagrams, and connection guides needed for accurate system design. Ideal for engineers integrating standard electronic equipment—such as consumer electronics and office automation gear—where dependable power conversion is essential. Note: Designed for non-critical use only.
Page 1 Text Content
AC/DC converter Block Diagram The operating the principle is switching regulator based on chopper form.
Positive power supply
The one with the bulit-in coil The one with the external coil
Point A 141V Point A 141V
Coil connect pin
Input pin Input pin
Output pin Output pin
Current detection Current detection
Switchig circuit Switchig circuit
circuit circuit
Flywheel diode
Voltage detection Voltage detection
Drive circuit Drive circuit
circuit circuit
COMMON pin COMMON pin COMMON pin COMMON pin
Impressing the 100V(DC conversion=141V) rectified between Input pin-COMMON pin, Switching 0 to 141V as shown wave shape at the internal circuit point A and smoothing by output capacitor enables to output.
Negative power supply Only the one with the external coil can be used
Point A −141V
Coil connect pin
Input pin
Output pin
Current detection
Switchig circuit
circuit
Voltage detection
Drive circuit
circuit
COMMON pin COMMON pin
Impressing the 100V(DC conversion= 141V) rectified between Input pin-COMMON pin, Switching 0 to 141V as shown wave shape at the internal circuit point A and smoothing by output capacitor enables to output.
Page Summary Contents For ROHM AC-DC Converter Block Diagram Owner's Manual
Manual Details
| Brand | ROHM |
|---|---|
| Pages | 2 |
| File Size | 45.53 KB |
| Published | June 01, 2026 |
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Frequently Asked Questions
Which power supply options are available?
The circuit supports both a positive and a negative power supply.
Can I use an external coil with the negative power option?
Yes, only those models with an external coil can be used for negative power supply.
What is the operating voltage range?
For positive supply, it impresses 100V(DC conversion=141V). For negative supply, it impresses 100V(DC conversion=-141V).
Is this device suitable for critical safety applications?
Consult with a sales representative if using the product in equipment requiring extremely high reliability (e.g., medical or aerospace machinery).