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Guangzhou Top Power Electronics Technology Co.,Ltd
TP78xx-1 Series

TP78xx-1 Series

Product catalog summary

Description: The TP78xx-1 series is a high-efficiency, non-isolated DC/DC converter with features such as short circuit protection, thermal shutdown, and no need for a heat sink. It is designed to replace 78xx linear regulators and is pin compatible, offering a wide input range and regulated single output.

Output Characteristics: The series provides an output voltage accuracy of ±2% to ±3% at full load, with line regulation of ±0.5% to ±0.75% and load regulation of ±0.5% to ±1.0%. It includes continuous short circuit protection with auto-recovery and a thermal shutdown at 150°C. The output current limit is 3000 mA, and the switching frequency ranges from 335 to 435 KHz. The temperature coefficient is ±0.02%/°C, and the maximum capacitance load is 1000 μF.

Common Specifications: The operating temperature range is -40°C to 85°C, with power derating above 71°C. The storage temperature range is -55°C to 125°C. The device is cooled by free air convection and has a plastic case material (UL94-V0). The MTBF is 2000 k hours at 25°C.

Features: The TP78xx-1 series is ROHS compliant, with efficiency up to 93%. It features short circuit protection, thermal shutdown, and operates within a temperature range of -40°C to 85°C. It has low ripple noise and comes in a SIP package with an industry-standard pinout.

Selection Guide: The series includes various models with different input voltage ranges and output efficiencies. For example, the TP781.5-1 model has an input voltage range of 4.75 to 18 VDC and an output efficiency of 78% to 72%.

Temperature Derating and Capacitor Table: The document provides a table for external capacitors required for each model, such as 10μF/25V for C1 and 22μF/6.3V for C2 for the TP781.5-1 model.

Standard Application Circuit: The application circuit requires C1 and C2 capacitors to be fitted close to the converter pins. The capacitance can be increased if needed, and tantalum or low ESR electrolytic capacitors may also be used.

Output Ripple Reduction: To reduce output ripple, an LC filter is recommended at the output port, with L values ranging from 10μH to 47μH.

Mechanical Dimensions and Pin Connections: The document provides detailed mechanical dimensions and pin connections for the SIP package, including recommended footprint details and tube outline dimensions.

Catalog excerpts

Wide Input Non-Isolated, Regulated Single Output The TP78xx-1 series has high efficiency, short circuit protection, Thermal shutdown, no heat sink required, Industry standard pinout.ideal for redialing 78xx linear regulates and are pin compatible. Storage humidity range Operating temp. range Storage temp. range Storage temp. Range Temp rise at full load Lead temperature Case material

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TP78xx-1 SeriesTEMPERATURE DERATING GRAPHS EXTERNAL CAPACITOR TABLE Part Number STANDARD APPLICATION CIRCUIT GNDO 1. C1 and C2 are required and should be fitted close to the converter pins. 2. The capacitance of C1 ,C2 sees external capacitor table, it can be increased properly if required, and tantalum or low ESR electrolytic capacitors may also suffice. 3. No parallel connection or plug and play. 1.Efficiency and Output Voltage Ripple Test 2.Start-up and Load Transient Response Test Copper strip

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TP78xx-1 SeriesOUTPUT RIPPLE REDUCTION To reduce output ripple, it is recommended to add a LC filter in output port. L: Recommended parameter 10^ H ~ 47^ H. All dimensions in mm ±0.25.All pins on a 2.54mm pitch. Unless otherwise stated all dimensions in mm ±0.5mm. Unless otherwise stated all dimensions in mm ±0.5mm. L=520mm ±2mm Packaging quantity:43PCS L=220mm ±2mm Packaging quantity:17PCS

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TP78xx-1 Series

TP78xx-1 Series

Catalog excerpts

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