The PET1600-12-074NA is a 1600 Watt AC to DC, power-factor- corrected (PFC) power supply that converts standard AC power into a main output of +12 VDC for powering intermediate bus architectures (IBA) in high performance and reliability servers, routers, and network switches. The PET1600-12-074NA utilizes full digital control architecture for greater efficiency, control, and functionality. This power supply meets international safety standards and displays the CE-Mark for the European Low Voltage Directive (LVD). Best-in-Class, 80 PLUS Certified Platinum Efficiency Auto-Selected Input Voltage Ranges: 90-140VAC, 180-264 VAC AC Input with Power Factor Correction 1600 W Continuous and 2100 W Peak Output Power Capability Always-On 12 V/3.5 A Standby Output Hot-plug Capable Parallel Operation with Active Current Sharing Full Digital Controls for Improved Performance 3 High Density Design: 33.7 W/in Small Form Factor: 265 x 73.5 x 40 mm (10.43 x 2.89 x 1.57 in) Power Management Bus Communication Protocol for Control Programming and Monitoring Status LED with Fault Signaling Networking Switches Servers & Routers Telecommunications 2 PET1600-12-074NA PET 1600 - 12 - 074 N A Product Family Power Level Dash V1 Output Dash Width Airflow Input PET Front-Ends 1600 W 12 V 74 mm N: Normal A: AC The PET1600-12-074NA AC/DC power supply is a fully DSP controlled, highly efficient front-end power supply. It incorporates resonance-soft-switching technology to reduce component stresses, providing increased system reliability and very high efficiency. With a wide input operational voltage range the PET1600-12-074NA maximizes power availability in demanding server, network, and other high availability applications. The supply is fan cooled and ideally suited for integration with a matching airflow path. The PFC stage is digitally controlled using a state-of-the-art digital signal processing algorithm to guarantee best efficiency and unity power factor over a wide operating range. The DC/DC stage uses soft switching resonant techniques in conjunction with synchronous rectification. An active OR-ing device on the output ensures no reverse load current and renders the supply suitable for operation in redundant power systems. The always-on standby output provides power to external power distribution and management controllers. It is protected with an active OR-ing device for maximum reliability. Status information is provided with a front-panel LED. In addition, the power supply can be controlled and the fan speed set via the I2C bus. The I2C bus allows full monitoring of the supply, including input and output voltage, current, power, and inside temperatures. Cooling is managed by a fan controlled by the DSP controller. The fan speed is adjusted automatically depending on the actual power demand and supply temperature and can be overridden through the I2C bus. L V1 DC Curr VSB ent Filter PFC limit DC N GND PE Aux EEPROM Converter Fan V1 SENSE V1 SENSE RTN Digital Digital ISHARE Prim Sec Communication Bus I2C Controls Controls A0..1 Logic Signals Figure 1. PET1600-12-074NA Block Diagram Stresses in excess of the absolute maximum ratings may cause performance degradation, adversely affect long-term reliability and cause permanent damage to the supply. PARAMETER CONDITIONS / DESCRIPTION MIN MAX UNITS Vi maxc Maximum Input Continuous 264 VAC tech.support psbel.com PWM PWM