Product Brief Introduction
Leyu power SD series, it is a DC to DC single output converter. Wide input range, built-in EMI filter, low ripple noise. With short circuit, overvoltage, overload protection, low consumption, high output power. This series can provide a minimum power of 15W, a maximum power of 500W, give you more choices. 2 year warranty with CE and RoHS certification. It is widely used in communication equipment, including batteries, and solar energy systems.Product Features
| SPECIFICATION | |||||||||
| OUTPUT | |||||||||
| Model | SD-25A-5 | SD-25B-5 | SD-25C-5 | SD-25A-12 | SD-25B-12 | SD-25C-12 | SD-25A-24 | SD-25B-24 | SD-25C-24 |
| DC Voltage | 5V | 12V | 24V | ||||||
| Rated Current | 5A | 2.1A | 1.1A | ||||||
| Current Range | 0 ~ 5A | 0 ~ 2.1A | 0 ~ 1.1A | ||||||
| Rated Power | 25W | 25.2W | 26.4W | ||||||
| Ripple & Noise | 100mVp-p | 120mVp-p | 150mVp-p | ||||||
| Voltage Adj. Range | 4.75~5.5VDC | 11-16VDC | 23-30VDC | ||||||
| Voltage Tolerance | ±2.0% | ±1.0% | ±1.0% | ||||||
| Line Regulation | ±0.5% | ±0.3% | ±0.2% | ||||||
| Load Regulation | ±0.5% | ±0.3% | ±0.2% | ||||||
| Setup, Rise, Hold Up Time | 2.5s, 50ms, ------ at full load | ||||||||
| INPUT | |||||||||
| Voltage Range | A: 9.2 ~18VDC B:19 ~ 36VDC C:36~72VDC | ||||||||
| Efficiency | 71% | 72% | 74% | 72% | 75% | 78% | 75% | 78% | 81% |
| DC Current | A:3.2A/12V | B:1.6A/24V | C:0.8A/48V | ||||||
| PROTECTION | |||||||||
| Over Load | 105 ~ 150% rated output power | ||||||||
| Protection type : Hiccup mode, recovers automatically after fault condition is removed | |||||||||
| Over Voltage | 5.75 ~ 6.75V/10% load | 16.8 ~ 20V/10% load | 31.5 ~ 37.5V/10% load | ||||||
| Protection type : Hiccup mode, recovers automatically after fault condition is removed | |||||||||
| ENVIRONMENT | |||||||||
| Working Temp. | -10 ~ +60℃ (Refer to “Derating Curve”) | ||||||||
| Working Humidity | 20 ~ 90% RH non-condensing | ||||||||
| Storage Temp., Humidity | -20 ~ +85℃, 10 ~ 95% RH | ||||||||
| Temp. Coefficient | ±0.03%/℃ (0 ~ 50℃) | ||||||||
| Vibration | 10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes | ||||||||
| SAFETY & EMC | |||||||||
| Safety Standards | Design refer to LVD | ||||||||
| Withstand Voltage | I/P-O/P: 1.5KVAC I/P-FG:2.0KVAC O/P-FG: 0.5KVAC | ||||||||
| Isolation Resistance | I/P-O/P, I/P-FG, O/P-FG:100M Ohms / 500VDC / 25℃ / 70% RH | ||||||||
| EMC Emission | Compliance to EN55022 (CISPR22) Class B | ||||||||
| EMC Immunity | Compliance to EN61000-4-2, 3, 4, 6, 8, EN55024, heavy industry level, criteria A | ||||||||
| OTHERS | |||||||||
| Dimension | 99*97*36mm (L*W*H) | ||||||||
| Weight | 0.38kg | ||||||||
| Packing | 45pcs/17.8kg/0.9CUFT | ||||||||
| NOTE | |||||||||
| 1. All parameters NOT specially mentioned are measured at 12,24,48VDC input, rated load and 25℃ of ambient temperature. 2. Ripple & noise are measured at 20MHz of bandwidth by using a 12” twisted pair-wire terminated with a 0.1uf & 47uf parallel capacitor. 3. Tolerance : includes set up tolerance, line regulation and load regulation. 4. The power supply is considered a component which will be installed into a final equipment. The final equipment must be re-confirmed that it still meets EMC directives. | |||||||||
Product Features
25W Single Output DC-DC Converter SD-25 series 2:1 wide input range Protections: Short circuit / Overload / Over voltage 1500VAC I/O isolation Built-in EMI filter, low ripple noise 100% full load burn-in test Fixed switching frequency at 83KHz Low cost High reliability 2 years warrantyFeatures and application of DC/DC converter
The DC/DC converter is a newly developed miniaturized power switch module, which uses microelectronics technology to assemble small surface-mounted integrated circuits and microelectronic components into one body. The use of DC/DC converters is conducive to simplifying the design of power circuits, shortening the development cycle, and achieving the best indicators. It can be widely used in power electronics, military industry, scientific research, industrial control equipment, communication equipment, instrumentation, switching equipment, access equipment, and mobile Communications, routers and other communication fields and industrial control, automotive electronics, aerospace and other design fields. Due to the short design cycle, high reliability, and easy system upgrade characteristics of using modules to build power systems, power modules are becoming more and more widely used. Especially in recent years, due to the rapid development of data services and the continuous promotion of distributed power supply systems, the increase in power supply modules has exceeded that of primary power supplies. With the extensive use of semiconductor technology, packaging technology, and high-frequency soft switches, the power intimacy of power modules is increasing, the conversion efficiency is getting higher and higher, and the application is getting easier and simpler.
