12 V and 48 V models added to Power module series with PMBusTM communications

TDK Corporation announces the introduction of 12 V and 48 V output models to the TDK-Lambda brand PFH500F series of high-efficiency AC-DC power modules. The series, rated at 504 W, can be conduction-cooled to a cold plate for outdoor applications.
The power modules can be programmed (read/write) or remotely monitored (read) through the industry-standard PMBus™ interface. The PFH500F series delivers outstanding performance in COTS (Commercial-Off-The-Shelf), LED signage, power amplifiers, and test and measurement equipment.
The PFH500F-12 and PFH500F-48 utilise the latest technologies, including GaN semiconductors, bridgeless power factor correction and digital control to achieve efficiencies of up to 92 percent. Digital isolators replace traditional optocouplers for long-term stability and reliability.

Modifying output voltage via trim‑pin or PMBus™‑command

Operating from a wide range 85 to 265 Vac input, the PFH500F-12 will deliver 42 A at 12 V with an adjustment capability of 9.6 – 14.4 V using the trim pin or the PMBus™ interface. The PFH500F-48 delivers 10.5 A at 48 V and can be adjusted from 38.4 - 52.8 V. All modules operate at a baseplate temperature of -40 °C to +100 °C and, at just 101.6 x 61.0 x 13.5 mm (L x W x H), are even slightly more compact than a full brick. Product features and options include droop mode current share, a 12 V auxiliary standby output, remote on/off, remote sense, an open collector power good signal and output trim. The PMBus™ can be used to program the output voltage, activate the remote on/off, change the under/over-voltage, over-current and over-temperature set points, plus read-back input and output current, input voltage and internal temperature.
The input to output isolation is 3,000 Vac, input to case 2,500 Vac and 1,500 Vdc output to case. Safety certification is to the IEC/UL/CSA/EN 62368-1 standards with CE and UKCA marking for the Low Voltage and RoHS Directives. For ease of testing, fully populated evaluation boards are available. ds
Video PFH500F 500W AC-DC Power Module
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