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Features
48.0 V input (36.0 V to 75.0 V),
•
non-isolated ZVS buck-boost regulator
20.0 V to 55.0 V adjustable output range
•
200 W output power in 0.57 in
•
96.7% typical efficiency, at full load
•
3
3
1341 W/in
(82 W/cm
) Power Density
•
5.29 MHrs MTBF (MIL-HDBK-217 Plus Parts Count)
•
Pin selectable operating mode
•
Adaptive Loop
Remote Sense / Child Operation
®
Half VI Chip
Package
•
22.0mm x 16.5mm x 6.73mm
Typical Applications
•
High Density Power Supply DC-DC rail outputs
•
High Density ATE system DC-DC power
•
Telecom NPU and ASIC core power
•
Communications Systems
•
Non-isolated and isolated power converters
PRM™ Regulator
Page 1 of 42
2
footprint
V
= 36.0 V to 75.0 V
IN
V
= 48.0 V
OUT
(20.0 V to 55.0 V Trim)
Product Description
The VI Chip® PRM
TM
operating from a 36.0 to 75.0 Vdc input to generate a regulated
20.0 to 55.0 Vdc output. The ZVS buck-boost topology enables
high switching frequency (~ 1.03 MHz) operation with high
conversion efficiency. High switching frequency reduces the
size of reactive components enabling power density up to
3
1341 W/in
.
The Half VI Chip® package is compatible with standard pick-
and-place and surface mount assembly processes with a planar
thermal interface area and superior thermal conductivity.
In a Factorized Power Architecture™ system, the PRM and
downstream VTM
TM
and conversion losses in a high power solution, providing an
isolated, regulated output voltage.
The PRM48AH480x200A00 has two selectable modes of
regulation depending on the application requirements.
In Adaptive Loop Operation, the PRM48AH480x200A00 utilizes
a unique feed-forward scheme that enables precise regulation
of an isolated POL voltage without the need for remote sensing
and voltage feedback.
In Remote Sense Operation, the internal regulation circuitry is
disabled, and an external control loop and current sensor
maintain regulation. This a ords flexibility in the design of both
voltage and current compensation loops to optimize
performance in the end application.
Rev 1.6
09/2020
PRM
Regulator
TM
PRM48AH480x200A00
High Efficiency Converter
Product Ratings
P
= 200 W
OUT
I
= 4.17 A
OUT
Regulator is high efficiency converter,
current multiplier minimize distribution
S
C
NRTL
US
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Related Manuals for VICOR PRM48AH480 200A00 Series
Summary of Contents for VICOR PRM48AH480 200A00 Series
- Page 1 Regulator PRM48AH480x200A00 NRTL High Efficiency Converter Features Product Ratings = 36.0 V to 75.0 V = 200 W 48.0 V input (36.0 V to 75.0 V), • = 48.0 V non-isolated ZVS buck-boost regulator = 4.17 A (20.0 V to 55.0 V Trim) 20.0 V to 55.0 V adjustable output range •...
- Page 2 PRM48AH480x200A00 Typical Applications ENABLE VAUX REF/ TRIM REF_EN ON/OFF CONTROL Adaptive Loop Temperature Feedback +OUT VTM Start Up Pulse SHARE/ CONTROL NODE SGND TRIM SGND +OUT VF: 20 V to 55 V –IN –OUT –IN –OUT SGND PRIMARY SECONDARY SEC_GND ISOLATION BOUNDRY SGND Typical Application: PRM48AH480x200A00 + VTM Adaptive Loop Configuration...
- Page 3 PRM48AH480x200A00 Pin Configuration TOP VIEW SHARE/ CONTROL NODE VAUX ENABLE TRIM SGND REF/REF_EN +OUT -OUT Half VIC Pin Descriptions Signal Name Type Function Number SHARE Parallel sharing control bus for parent-child configuration. BIDIR (Adaptive Loop / Child Operation) CONTROL NODE Modulator control node input.
- Page 4 PRM48AH480x200A00 Part Ordering Information Input Voltage Device Package Type Output Voltage x 10 Temperature Grade Output Power Revision Version Range H = Half VIC T = -40 to 125°C PRM = PRM 48A = 36.0 V - 75.0 V 480 = 48.0 V 200 = 200 W 00 = AL / RS M = -55 to 125°C...
- Page 5 PRM48AH480x200A00 Electrical Specifications Specifications apply over all line and load conditions, and trim from 20.0 V to 55.0 V, unless otherwise noted; Boldface specifications apply over the temperature range of -40ºC < T < 125ºC; All Other specifications are at T = 25ºC unless otherwise noted.
- Page 6 PRM48AH480x200A00 Electrical Specifications (cont.) Specifications apply over all line and load conditions, and trim from 20.0 V to 55.0 V, unless otherwise noted; Boldface specifications apply over the temperature range of -40ºC < T < 125ºC; All Other specifications are at T = 25ºC unless otherwise noted.
- Page 7 PRM48AH480x200A00 Electrical Specifications (cont.) Specifications apply over all line and load conditions, and trim from 20.0 V to 55.0 V, unless otherwise noted; Boldface specifications apply over the temperature range of -40ºC < T < 125ºC; All Other specifications are at T = 25ºC unless otherwise noted.
- Page 8 PRM48AH480x200A00 Electrical Specifications (cont.) Specifications apply over all line and load conditions, and trim from 20.0 V to 55.0 V, unless otherwise noted; Boldface specifications apply over the temperature range of -40ºC < T < 125ºC; All Other specifications are at T = 25ºC unless otherwise noted.
- Page 9 PRM48AH480x200A00 Signal Specifications Specifications apply over all line and load conditions, T = 25ºC and output voltage from 20.0 V to 55.0 V, unless otherwise noted. Boldface specifications apply over the temperature range of -40ºC < T < 125ºC (T-grade). ENABLE •...
- Page 10 PRM48AH480x200A00 Signal Specifications (cont.) Specifications apply over all line and load conditions, T = 25ºC and output voltage from 20.0 V to 55.0 V, unless otherwise noted. Boldface specifications apply over the temperature range of -40ºC < T < 125ºC (T-grade). SGND: Signal Ground •...
- Page 11 PRM48AH480x200A00 Signal Specifications (cont.) Specifications apply over all line and load conditions, T = 25ºC and output voltage from 20.0 V to 55.0 V, unless otherwise noted. Boldface specifications apply over the temperature range of -40ºC < T < 125ºC (T-grade). TRIM (Adaptive Loop Operation Only) •...
- Page 12 PRM48AH480x200A00 Signal Specifications (cont.) Specifications apply over all line and load conditions, T = 25ºC and output voltage from 20.0 V to 55.0 V, unless otherwise noted. Boldface specifications apply over the temperature range of -40ºC < T < 125ºC (T-grade). AL: Adaptive Loop (Adaptive Loop Operation Only) •...
- Page 13 PRM48AH480x200A00 Signal Specifications (cont.) Specifications apply over all line and load conditions, T = 25ºC and output voltage from 20.0 V to 55.0 V, unless otherwise noted. Boldface specifications apply over the temperature range of -40ºC < T < 125ºC (T-grade). VT: VTM Temperature (Adaptive Loop Operation Only) •...
- Page 14 PRM48AH480x200A00 Signal Specifications (cont.) Specifications apply over all line and load conditions, T = 25ºC and output voltage from 20.0 V to 55.0 V, unless otherwise noted. Boldface specifications apply over the temperature range of -40ºC < T < 125ºC (T-grade). REF_EN: Reference Enable (Remote Sense and Child Operation Only) •...
- Page 15 PRM48AH480x200A00 Signal Specifications (cont.) Specifications apply over all line and load conditions, T = 25ºC and output voltage from 20.0 V to 55.0 V, unless otherwise noted. Boldface specifications apply over the temperature range of -40ºC < T < 125ºC (T-grade). Control Node (Remote Sense Operation Only) •...
- Page 16 PRM48AH480x200A00 Functional Block Diagram +OUT -OUT PGND Internal Regulator 30.1 kΩ Modulator Error Amplifier 1.58 kΩ Enable 2.5 mA Min 3.3 V Linear 0.5 mA Regulator Voltage Reference 3.3 V SHARE/ CONTROL NODE kΩ kΩ kΩ ENABLE VAUX 10 kΩ kΩ...
- Page 17 PRM48AH480x200A00 High Level Functional State Diagram Conditions that cause state transitions are shown along arrows. Sub-sequence activities listed inside the state bubbles. Application of > UVLO+ STARTUP SEQUENCE expired ENABLE rising edge STANDBY SEQUENCE ENABLE: 1.8mA to HIGH VC Pulse ENABLE: 10uA to LOW REF_EN active expired...
- Page 18 PRM48AH480x200A00 Timing Diagrams (Adaptive Loop Operation) Module Inputs are shown in blue; Module Outputs are shown in brown. PRM™ Regulator Rev 1.6 09/2020 Page 18 of 42...
- Page 19 PRM48AH480x200A00 Timing Diagrams (Adaptive Loop Operation) (cont.) Module Inputs are shown in blue; Module Outputs are shown in brown. PRM™ Regulator Rev 1.6 09/2020 Page 19 of 42...
- Page 20 PRM48AH480x200A00 Timing Diagrams (Remote Sense Operation) Module Inputs are shown in blue; Module Outputs are shown in brown. PRM™ Regulator Rev 1.6 09/2020 Page 20 of 42...
- Page 21 PRM48AH480x200A00 Timing Diagrams (Remote Sense Operation) (cont.) Module Inputs are shown in blue; Module Outputs are shown in brown. PRM™ Regulator Rev 1.6 09/2020 Page 21 of 42...
- Page 22 PRM48AH480x200A00 Typical Performance Characteristics The following figures present typical performance at T = 25ºC, unless otherwise noted. See associated figures for general trend data. DC Safe Operating Area Output Voltage (V) Current Power Figure 1 — DC Safe Operating Area (SOA) Figure 4 —...
- Page 23 PRM48AH480x200A00 Typical Performance Characteristics (cont.) The following figures present typical performance at T = 25ºC, unless otherwise noted. See associated figures for general trend data. Figure 7 — Total efficiency and power dissipation vs. V and I Figure 10 — Total efficiency and power dissipation vs. V and I = 55.0 V, T = -40°C...
- Page 24 PRM48AH480x200A00 Typical Performance Characteristics (cont.) The following figures present typical performance at T = 25ºC, unless otherwise noted. See associated figures for general trend data. Effective Internal Input and Output Capacitance vs. Applied Voltage INPUT AND OUTPUT INPUT CAPACITANCE CAPACITANCE ONLY 10 15 20 25 30 35 40 45 50 55 60 65 70 75 Applied Voltage (V) Input and Output Capacitance (uF)
- Page 25 PRM48AH480x200A00 Typical Performance Characteristics (cont.) The following figures present typical performance at T = 25ºC, unless otherwise noted. See associated figures for general trend data. DC Modulator Gain and Powertrain Equivalent Powertrain Equivalent Input Resistance vs. Output Current - V = 20 V Resistance vs.
- Page 26 PRM48AH480x200A00 General Characteristics Specifications apply over all line and load conditions, T = 25ºC and output voltage from 20.0 V to 55.0 V, unless otherwise noted. Boldface specifications apply over the temperature range of -40ºC < T < 125ºC (T-grade). Attribute Symbol Conditions / Notes...
- Page 27 PRM48AH480x200A00 Pin Functions If TRIM is permitted to pull up to 3.20 V or higher during start up, trim is disabled, and the output is set to the nominal of 48.0 V. +IN, -IN If TRIM is held between 1.00 V to 2.75 V during start up, trim is enabled, and the output is scaled by a factor of 20 resulting Input power pins in an output voltage range of 20.0 V to 55.0 V.
- Page 28 PRM48AH480x200A00 Design Guidelines When CONTROL NODE falls below 0.79 V, the converter will stop switching. An internal circuit clamps the modulator input to 7.40 V, The PRM48AH480 200A00 regulator is specifically designed to and a buffer will source up to 2.5 mA out of the pin at that clamp provide a controlled Factorized Bus distribution voltage for powering level.
- Page 29 PRM48AH480x200A00 Design Guidelines (Adaptive Loop Operation) The TRIM pin is pulled up internally to V thorough a 10 kΩ CC_INT resistor. V can be actively set with a DAC that is ground TRIM In Adaptive Loop Operation, the internal voltage control circuitry is referenced to SGND.
- Page 30 PRM48AH480x200A00 Adaptive Loop Compensation (Adaptive Loop Operation) PRM and VTM Output Voltage A factorized power system naturally has a DC load line associated Adaptive Loop Comensation Example with it since the regulator stage (PRM) is positioned before the isolation and voltage transformation stage (VTM) Consider for a moment a factorized power system that has the following parameters: = 40 V...
- Page 31 AL engine towards this end resistance of the VTM with the addition of a single resistor across the please contact Vicor’s Applications Engineering department. AL pin and a connection of the VTM’s TM pin to the PRMs VT pin.
- Page 32 PRM48AH480x200A00 (uF) (Ohm) (Ohm) < (uF) Maxium Capacitance limits (b) ESR requirements (c) ESR requirements Figure — Output Capacitance Limits Current Limit (Adaptive Loop Operation) In Adaptive Loop Operation, the current limit is controlled by the internal microcontroller. The current limit approximates a “brick- wall”...
- Page 33 Arrays of more than 5 PRMs may be possible through use of external Mismatches in both inductance, and resistance from the common circuitry. Please contact Vicor Applications for assistance with array power source to each PRM should be minimized. sizing above 5 units.
- Page 34 PRM48AH480x200A00 Design Guidelines (Remote Sense Operation) It is important to apply proper slew rate to the reference voltage rise when the control loop is initially enabled. The recommended range for reference rise time is 1 ms to 9 ms. The lower rise time limit will In Remote Sense Operation, the PRM48AH480 200A00 is an ensure optimized modulator timing performance during start up, intelligent powertrain module designed to fully exploit external...
- Page 35 PRM48AH480x200A00 Control Loop Compensation Requirements The system poles and zeros of the closed loop can then be defined as (Remote Sense Operation) follows: In order to properly compensate the control loop, all components which contribute to the closed loop frequency response should be Powertrain pole, assuming the external capacitor ESR can be identified and understood.
- Page 36 PRM48AH480x200A00 Midband Gain Design: R1, R3 (Remote Sense Operation) With reference to Figure 37: curve ABC is the: minimum output voltage in the application maximum input voltage expected in the application maximum load PRM open loop response, and is where the maximum crossover frequency occurs.
- Page 37 Arrays of more than 5 PRMs may require additional circuitry to current sense circuitry must be enabled when all modules’ R EF_EN provide the required source current. Contact Vicor Applications pins have reached their operational voltage levels. Engineering for more information.
- Page 38 PRM48AH480x200A00 DESIGN GUIDELINES (General Operation) The following guidelines are general guidelines that apply to any (11) mode of operation. FPA System Considerations There are a few system level design considerations that should be Burst Mode Operation carefully considered when using a PRM and VTM to implement a At light loads, the PRM will operate in a burst mode due to minimum Factorized Power Architecture (FPA) system timing constraints.
- Page 39 PRM48AH480x200A00 Input Filter Stability Input Fuse Recommendations The PRM can provide very high dynamic transients. It is therefore A fuse should be incorporated at the input to each PRM, in series very important to verify that the voltage supply source as well as the with the +IN pin.
- Page 40 PRM48AH480x200A00 Product Outline Drawing and Recommended Land Pattern PRM™ Regulator Rev 1.6 09/2020 Page 40 of 42...
- Page 41 Revision History Revision Date Description Page Number(s) 11/12/12 Final approved data sheet for intital release 02/15/13 Updated format throughout 07/25/13 Updated Maximum Time Abover 217°C Added Array Diagrams 33 & 37 09/30/15 Updated MSL Rating 11/16/15 Minor changes in efficiency specifications Corrections to schematic labels 1, 4, 6, 7, 8, 9, 11, 09/08/20...
- Page 42 A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system or to affect its safety or effectiveness. Per Vicor Terms and Conditions of Sale, the user of Vicor products and components in life support applications assumes all risks of such use and indemnifies Vicor against all liability and damages.
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