![[URB2403S-3WR3] 9-36V Input, 3.3V Output, 3W Isolated Regulated Power Module](https://simodule.com/wp-content/uploads/Wide-input-Voltage/URB2403S-3W-7892-8768K/URB2403S-3W-7892-8768K-A.jpg)
![[URB2403S-3WR3] 9-36V Input, 3.3V Output, 3W Isolated Regulated Power Module - Image 2](https://simodule.com/wp-content/uploads/Wide-input-Voltage/URB2403S-3W-7892-8768K/URB2403S-3W-7892-8768K-B.jpg)
Introduction
URB2403S-3W-7892-8768K is isolated 3W DC-DC converter module with a wide 4:1 input voltage range (9-36V), and a regulated output of 3.3V. The product has a relatively compact open-frame SIP-7 package. The power module features high efficiency, operating ambient temperature of -40℃ to +85℃, remote control, and continuous short-circuit protection. The smaller size and cost-effective design make the module an ideal solution in communication, instruments, and industrial electronics applications.
Functional Block Diagram
URB2403S-3W-7892-8768K module employs an isolated flyback architecture with primary-side regulation. The system primarily comprises a flyback controller IC, a transformer, input and output capacitors, and associated peripheral components.
During the off-time (Toff ), the voltage across the primary winding is VIN+N·VOUT . Consequently, the voltage across resistor RFB equals N·VOUT , generating a current of N·VOUT/RFB . This current flows through resistor RREF , producing a voltage drop of (N·VOUT/RFB)·RREF . This voltage is compared against the error amplifier’s internal 1V reference to generate an error signal. The signal is subsequently amplified and processed by the control circuit to drive the power MOSFET.
Features
- Ultra compact SIP package
- Cost-effective open-frame solution
- No-opto solution for higher reliability
- Wide 4:1 input voltage range
- Isolation test voltage: 1.5kVDC
- Short circuit protection (Auto-recovery)
- Remote ON/OFF
![[WRB2405S-3WR3] 18-36V Input, 5V Output, 3W Isolated Regulated Power Module](https://simodule.com/wp-content/uploads/Wide-input-Voltage/WRB2405S-3W-7892-8768K/WRB2405S-3W-7892-8768K-A-420x420.jpg)
![[WRB1224S-3WR3] 9-18V Input, 24V Output, 3W Isolated Regulated Power Module](https://simodule.com/wp-content/uploads/Wide-input-Voltage/WRB1224S-3W-7892-8735K/WRB1224S-3W-7892-8735K-A-420x420.jpg)
![[URB2409S-3WR3] 9-36V Input, 9V Output, 3W Isolated Regulated Power Module](https://simodule.com/wp-content/uploads/Wide-input-Voltage/URB2409S-3W-7892-8740K1/WRB2409S-3W-7892-8740K1-A-420x420.jpg)