This document describes the features and characteristics of the SM625/SM626/SM627 series power output stages, which are designed for switching power supply applications. They have a current capability of 15A and are designed to reduce size, improve efficiency, reduce noise and RFI. The high operating frequency allows for smaller inductor-capacitor filter and improved power supply response time. The efficiency is over 85% with rise and fall time less than 300ns.
The SM625/SM626/SM627 series are designed for use with standard PWM ICs to create efficient switching power supplies. They feature a hybrid construction with thick‑film resistors on a beryllia substrate, providing high thermal conductivity, 15 A current capability, and efficiencies greater than 85 %.
Technical data include absolute maximum ratings, thermal resistance values, recommended operating conditions, and detailed electrical characteristics. Various TO‑66 hermetic packages are offered, and ordering information with part numbers and temperature ranges is provided.
| Current capability | 15 A |
|---|---|
| Efficiency | > 85 % |
| Operating frequency | > 100 kHz |
| Input voltage (max) | 60 V / 80 V / 100 V |
| Output voltage (max) | 60 V / 80 V / 100 V |
| Output current (max) | 15 A |
The devices can deliver up to 15 A of output current.
The efficiency is greater than 85 %.
The SM625, SM626, and SM627 support maximum input voltages of 60 V, 80 V, and 100 V respectively.