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reference designMCP16701 | Demoboard EV23P28A

Microchip MCP16701 | Demoboard EV23P28A

High-performance, High-accuracy PMIC for High-end MPU, FPGA and PCI100x PCIe Switch Power Solutions

Overview

TopologyBuck Converter
Input voltage2.7-5.5 V
Output 13.8 V / 1.5 A
IC revision1

Description

The MCP16701 is a Power Management Integrated Circuit (PMIC) dedicated to FPGA and high-end MPU applications. It supports commercial and industrial applications. The MCP16701 integrates eight parallelable DC-DC buck regulators, four auxiliary LDOs and one low-input/low-output voltage LDO controller using an external MOSFET. It also features an interrupt flag that signals faults and a 3.4 MHz I2C interface. They can be operated either independently or in paralleled groups of up to four to support higher currents. The LDOs can also be cascaded (in groups of two) to the output of a DC-DC channel, thus improving overall conversion efficiency. The MCP16701 power management settings allow for the implementation of low-power mode commanded by a GPIO pin (MODE input of MCP16701). Any channel can also be selectively and permanently set in Auto PFM or FPWM. Active discharge resistors are provided on each output. All Buck channels and LDOs support soft start-up.

Features

  • Input Voltage: 2.7V to 5.5V
  • Eight 1.5A Buck DC-DC Channels
  • Four 300 mA High-Accuracy LDOs
  • One High-Accuracy, High-PSRR LDO Controller Using External N-channel MOSFET
  • 100% Duty Cycle Capability of Buck Channels
  • Reference Ground (REFGND) is Routed to Bucks1-4 for an Improved Accuracy of the Output Voltage
  • Low-Noise Forced-PWM and Light-Load High-efficiency Mode Available (Pin-Selectable or Bit Control)
  • External Synchronization of Switching Frequency; this Feature can be Active or Disabled in Registry
  • Selectable Phase (0°, 90°, 180° or 270°) for Buck Channels
  • Global RESET (nRSTO_A) with Programmable De-Assertion Delay
  • User-Defined RESET (nRSTO_P) with Programmable De-Assertion Delay
  • 1 MHz MCP2221 I2C Interface => 400kHz MCP2221 I2C Interface
  • On Die Programmable NVM
  • NVM Write Password Protection (e.g., Voltage Setting)
  • Dedicated VDD Supply Pin for NVM and Interface Allows Programming without Powering Up the Application
  • Re-Configurable During Runtime
  • Hiccup-Mode Current Limit for Buck Channels (can be Disabled)
  • Programmable thermal early warning and thermal shutdown protection
  • LED Visual Indicator for the nINTO Pin (Interrupt Flag) with Selectable Interrupt Masking for Each Channel
  • On-Board Load Transient Generator for VOUT1234 and LDOC_OUT
  • General Purpose Output (GPO)
  • Watchdog Timer

Typical applications

  • µC/µP, FPGA, and DSP Power
  • High-Performance MPUs Power Supply Solutions

More information

Parts approved by Microchip

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Order Code
Data­sheet
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Downloads
Status
Product series
C
VR(V (DC))
Endurance(h)
IRIPPLE(mA)
Z(mΩ)
ILeak(µA)
DF(%)
Ø D(mm)
L(mm)
Packaging
Pins
Type
Mount
IR(A)
Working Voltage(V (AC))
Operating Temperature
SamplesAvailability & Sample
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865080453014
SPECWCAP-ASLI Aluminum Electrolytic Capacitors, 330 µF, 25 V (DC)
Simu­lation
Availability
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Downloads8 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-ASLI Aluminum Electrolytic Capacitors
Capacitance330 µF
Rated Voltage25 V (DC)
Endurance 2000
Ripple Current570 mA
Impedance200 mΩ
Leakage Current82.5 µA
Dissipation Factor14 %
Diameter8 mm
Length10.5 mm
Packaging15" Tape & Reel 
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MountV-Chip SMT 
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Operating Temperature -55 °C up to +105 °C
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61300421121
SPECWR-PHD Pin Header - Dual, –, –
Simu­lation–
Availability
–
Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-PHD Pin Header - Dual
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Length5.08 mm
PackagingBag 
Pins4 
TypeStraight 
MountTHT 
Rated Current3 A
Working Voltage250 V (AC)
Operating Temperature -40 °C up to +105 °C
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Additional parts recommended by Würth Elektronik

Recommended parts are Würth Elektronik alternatives that are not formally approved for this reference design. Please verify it is suitable for your application, and contact us if you have any questions.

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Order Code
Data­sheet
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Product series
L(µH)
IRP,40K(A)
ISAT,30%(A)
RDC typ.(mΩ)
fres(MHz)
VOP(V)
Mount
ISAT,10%(A)
RDC max.(mΩ)
SamplesAvailability & Sample
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744373240047
SPECWE-LHMI SMT Power Inductor, 0.47 µH, 8.7 A
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Availability
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Downloads8 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-LHMI SMT Power Inductor
Inductance0.47 µH
Performance Rated Current8.7 A
Saturation Current @ 30%19.6 A
DC Resistance11.2 mΩ
Self Resonant Frequency122 MHz
Operating Voltage120 V
MountSMT 
Saturation Current @ 10%10.4 A
DC Resistance14 mΩ
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74438357010
SPECWE-MAPI SMT Power Inductor, 1 µH, 10.25 A
Simu­lation
Availability
–
Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-MAPI SMT Power Inductor
Inductance1 µH
Performance Rated Current10.25 A
Saturation Current @ 30%12.5 A
DC Resistance11.6 mΩ
Self Resonant Frequency59 MHz
Operating Voltage80 V
MountSMT 
Saturation Current @ 10%6.2 A
DC Resistance13.5 mΩ
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