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Compact K78xx-500R3 DC/DC Modules Deliver Efficient Regulated Power

Rajguru Electronics has introduced the K78xx-500R3 series of non-isolated DC/DC power modules. These compact modules provide regulated positive and negative outputs with high efficiency, short-circuit protection, and a small SIP-3 package, making them ideal for space-constrained industrial, IoT, and embedded applications.

Key Specifications

• Package: SIP-3 (11.50 × 7.55 × 10.20 mm), weight 1.95 g
• Output current: up to 500 mA (positive versions), up to 300/150 mA (negative versions)
• Positive outputs: 3.3 V, 5 V, 9 V, 12 V, 15 V
• Negative outputs: –5 V, –12 V, –15 V
• Input voltage: up to 36 V DC (model dependent)
• Typical efficiency: up to 95%
• Ripple & noise: as low as 20 mVp-p typical
• Operating temperature: –40°C to +85°C
• Transient response deviation: 50 mV typical
• Temperature drift: ±0.03%/°C
• Maximum capacitive load: up to 680 µF
• MTBF: 2,000,000 hours (25°C, MIL-HDBK-217F)
• Sustainable short-circuit protection with self-recovery

The modules meet CISPR32/EN55032 Class B EMI requirements (with recommended circuit) and offer good immunity to ESD, surge, and conducted disturbances.

Target Applications

• Industrial control systems
• IoT devices and embedded controllers
• Communication equipment
• Automotive and rail electronics
• Electric power systems

Thanks to their compact size, high efficiency, and robust protection features, the K78xx-500R3 modules allow designers to implement regulated power conversion without discrete linear regulators, saving board space and simplifying thermal design.

Source:  Electronics For You