DESIGN GUIDE
DESIGN GUIDE Table of Contents Overview of Product............................................................................................................................ 1 Standard Features................................................................................................................................ 1 Optional Features................................................................................................................................ 1 Mechanical Considerations.............
DESIGN GUIDE Table of Contents (Cont.) J2 Customer Interface Signals........................................................................................................... 11 1.1.11 Auxiliary Supply...................................................................................................................... 11 1.1.12 ED/1 Enable/Disable Output Channel One.............................................................................. 11 1.1.13 Over Temperature Warning (Non Latching)..............
Overview of Product The MicroPAC is a factory configurable power supply providing up to 1,300 W of continuous power in a small slimline 1u package. The power supply provides up to 4 isolated outputs and combines power factor correction along with high efficiency and power density. The MicroPAC boasts a power density of 25Win3 and efficiency up to 92%, the power supply is available in a wide temperature range configuration and for harsh environments and mil-cots applications conformal coated.
Mechanical Considerations The MicroPAC power supply can be mounted on four of the six surfaces using standard 6-32 screws with a maximum torque of 7 inch-lb. When using the mounting points the maximum insertion depth of the screw into the chassis from the outside surface must not exceed 0.125”. When considering a mounting location and/or orientation it is important not to restrict the air flow entering and exiting the MicroPAC.
vicorpower.com PE AC PE +5 V +12 V Smart Fan controller FAN EMI Filter DC 85 – 264 Vrms 47 – 400 Hz 120 – 300 Vdc External 15 A fuse required MicroPAC Chassis PIC program Port T Temp detec on on Boost heatsink Bridge Rec fier PE Microcontroller PFC Control +12 V Boost Converters 20 MHz +5 V +12 V BCM control So Start +5 V +12 V House Keeping BCM_1 BCM_1 BCM_1 BCM_1 Applications Engineering: 800 927.
Output Power De-rating Curve The MicroPAC is designed to operate from a single electrical phase; as such it can be operated directly from a normal wall outlet socket. These sockets are normally rated for 12 A continuous current draw and 15 A peak current draw. With this in mind it is necessary to institute a power de-rating curve to maintain the operational range of the MicroPAC within these boundaries. Figure 2: Output Power De-rating Curve vs. AC Input Voltage Output Power De-rating Curve vs.
MicroPAC Power Shed Mode 1.1.1 Introduction to the MicroPAC Power Shed Mode The aim of the power shed mode is to increase the overall light load efficiency of the MicroPAC. This is achieved by minimizing the power dissipation when light load or no load conditions are present on the MicroPAC output. The original concept of improving light load efficiency for VI Chip Bus Converter arrays was developed by Mr. Ankur Patel (Vicor Product Line Engineer).
1.1.5 Power Shed Mode Functional Description On power up with the power shed function enabled all four output channels are initially enabled, channel one to four LED’s should be illuminated. Circuitry internal to the MicroPAC monitors the amount of current drawn from the MicroPAC and is proportional to the customer load. If the load falls into category 1, the following will be observed.
When the MicroPAC is operating in categories 1 to 3 and detects an increase in load current applied to the output which incurs into the next power band the internal microcontroller will turn all outputs on, regardless of the actual amount of load added.
Customer Interface Connector Kit (19-130066) Material List Westcor Vendor QTY Description Vendor # Part Number Part Number Item 1 1 2 12 3 1 4 3 CONN HOUSING 12 POS MINITEK TERM FEM CRIMP 26-30 AWG CRIMP TOOL FOR ITEM 2 CONN HOUSING 3 POS W/LATCH TERM FEM CRIMP 16 AWG CRIMP TOOL FOR ITEM 4 63-00168-12 63-00167-01 ----------------63-00084-03 63-00125-01 ----------------- FCI FCI FCI MOLEX MOLEX MOLEX 90311-012LF 77138-101LF HT-151/RCY21151 39-01-4030 45750-3211 11-01-0199 Field R
Field Replacement Unit Instructions. > Remove input power connector.
Customer Interface 1.1.8 Input Power Connector Pin Designation (AC Use Only) Pin Designation 1 Live (L1) 2 Neutral (L2) 3 Protective Earth (PE) 1.1.9 Input Power Connector Pin Designation (DC Use Only) Pin 1 2 3 1.1.
J2 Customer Interface Signals All customer interface signals are referenced to the auxiliary +5V return (pin 2) 1.1.11 Pin 1 Auxiliary Supply Pin 2 An auxiliary +5V supply output is available with a maximum output of 500 mA (2.5 W). 0 V; this is the return for the above +5V. 1.1.12 Pin 3 ED/1 Enable/Disable Output Channel One ED/1: This pin is normally at +5V potential, this enables output channel one. 1.1.13 Pin 4 1.1.
1.1.19 Pin 9 1.1.20 Pin 10 Fan Fault (Latching) This pin is normally at +5V potential when referenced to pin 2. In the event of the fan failing the detection circuit will shut the MicroPAC down, and illuminate the fault LED red. Pin 9; will go from logic high to logic low level during this event.
Applications Engineering: 800 927.9474 0 USE SCREW #6-32 . MAXIMUM INTRUSION OF SCREW INTO CHASSIS FROM OUTSIDE SURFACE OF CHASSIS = .125" USE CRIMP TOOL FROM MOLEX P/N - 11-01-0199 FOR J5 4. 3.2 . 4 2X CUSTOMER MOUNTING USE CRIMP TOOL FROM FCI P/N - HT-151 OR RCY21151 FOR J2 2 . WESTCOR MATING CONNECTORS KIT P/N 19-130066. INTERPRET DRAWING PER ANSI Y14.5-1994. 5.800 3.1 . 1. NOTES: UNLESS OTHERWISE SPECIFIED 0 .500 AIR FLOW 1.329 0 2X 1.329 2X 5.863 2X 6.486 7.38 7.44 7.
Front Panel 1.1.26 LED Indicator Panel PWR /AC_OK / STANDBY CH1 CH2 CH3 LED Panel CH4 Customer Interface Connector CH 1-4 DC_OK LED 1.1.27 FAN_FLT /OVER TEMP/OVER TEMP SHUTDOWN GSD / CH 1 - 4 Disable LED Function LED Function LED# Function 1 Color 1 ED 1 Orange 2 ED 2 Orange 3 ED 3 Orange 4 ED 4 Orange FLT Fan Fault Red PWR AC-OK vicorpower.
MicroPAC Model Numbering Scheme Model Number: UPa - bbbb - cde Where a = number of outputs from 1 to 4 b = equals a character denoting output 1 voltage and power b = equals a character denoting output 2 voltage and power b = equals a character denoting output 3 voltage and power b = equals a character denoting output 4 voltage and power One character will denote a null for an output c, d, e will be characters denoting box level options such as fan cooling, conduction cooling, convection cooling, interfac
Specifications Input Input Voltage 85 – 264 Vac (¼” x 1¼”) External Fuse DC Rating: 120 Vdc – 300 Vdc Cooper Bussmann, (5 x 20 mm) Littelfuse, ABC-15, 216 series, rated 15 A rated 16 A Littelfuse, (¼” x 1¼”) Littelfuse, 505 series, 505 series, rated 16 A/500 Vdc rated 16 A/500 Vdc Frequency 47 ~ 400 Hz Inrush Current Efficiency 30 A Peak ≥92% @ Full load @ 25°C ambient 48 V output Power factor >0.95 typ.
Specifications (Cont.) Environmental Storage temperature -40°C ~ +85°C Operating temperature -20°C ~ +55°C (Extended temperature range is available; -40°C to +55°C) Functional shock MIL-STD 810F Method 516.
Vicor’s comprehensive line of power solutions includes high density AC-DC and DC-DC modules and accessory components, fully configurable AC-DC and DC-DC power supplies, and complete custom power systems. Information furnished by Vicor is believed to be accurate and reliable. However, no responsibility is assumed by Vicor for its use. Vicor makes no representations or warranties with respect to the accuracy or completeness of the contents of this publication.
