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Microchip MCP1012 | Demoboard EV37F82A

Overview

TopologyOther Topology
IC revision3

Description

The EV37F82A is intended to act as a reference design for the MCP1012, implementing a complete design with secondary Microcontroller. The MCP1012 15W Reference Design demonstrates the ability of the MCP1012 (located on the primary side) to start up a 15W AC-DC Flyback Converter and then have it commanded by a microcontroller (located on the secondary side). Two key components enable the startup and secondary side regulation of an isolated power supply, the Microchip MCP1012 and the Microchip patented integrated magnetic winding transformer built by Würth Elektronik (pn: 750318659).

Features

  • MCP1012 uses an open-loop, constant off-time, peak current-mode current regulator.
  • MCP1012 uses a high voltage silicon process (0.5µ 5v/30v/700v) to develop a High Voltage (HV) Linear Regulator. The HV Linear Regulator will be rated for 700V, with an input at VIN and a regulated bias output at VDD.
  • VDD is monitored by an Under-voltage Lockout (UVLO) feature
  • VDD is monitored by an Over-voltage Lockout (OVLO) feature
  • The device’s internal open-loop, peak current-mode current regulator operates in constant Off-Time mode. The duration of the Off-Time is internally fixed at 20µs typical
  • MCP1012 provides a MOSFET Gate Driver (GATE)
  • The Gate Driver can be commanded either by the internal open-loop, constant off-time peak current-mode current regulator circuitry or by an external PWM command via PULSE

More information

Products

Order Code Data­sheet Simu­lation Downloads Product seriesPinsApplicationPCB/Cable/PanelModularityWire SectionIR VDE
(A)
CEndurance
(h)
Operating TemperatureIRIPPLE
(mA)
ILeak
(µA)
DF
(%)
Pitch
(mm)
Ø D
(mm)
L
(mm)
Technical ReferenceZ
(Ω)
dV/dt
(V/µs)
DF @ 1 kHz
(%)
RISOW
(mm)
H
(mm)
Tol. CSizeOperating TemperatureQCeramic TypeFl
(mm)
ISAT
(A)
RDC typ.
(mΩ)
fres
(MHz)
VersionZ @ 100 MHz
(Ω)
Zmax
(Ω)
Test Condition ZmaxIR 2
(mA)
RDC max.
(mΩ)
TypeIR
(A)
L
(µH)
VR
(V (AC))
VT
(V (AC))
Samples
7447779115SPEC
9 files WE-PD SMT Power Inductor 2 -40 °C up to +125 °C 7.3 7.3 4.5 7345 -40 up to +125 °C 2.2 70 19.5 Robust 81 1.6 15
691415520003SPEC
6 files WR-TBL Series 4155 - 5.08 mm Screwless 45° Entry 3 Screwless PCB No 18 to 22 (AWG) 0.823 to 0.326 (mm²) 10 -30 °C up to +120 °C 5.08 15.24 -30 up to +120 °C 45° 10
744821240SPEC
9 files WE-CMB Common Mode Power Line Choke 4 -40 °C up to +125 °C 15.8 7.8 18 XS -40 up to +125 °C THT 140 1.5 4000 250 1500
742792624SPEC
8 files WE-CBF SMT EMI Suppression Ferrite Bead -55 °C up to +125 °C 1.6 0.8 0.8 0603 -55 up to +125 °C 0.3 SMT 180 250 400 MHz 1500 90 High Current 1
890334025017CSSPEC
8 files WCAP-FTXX Film Capacitors100 nF -40 °C up to +105 °C 15 18 MXXP015104K310ACPP46004 300 0.130000 MΩ 6 12 ±10% Pitch 15 mm 310
860241378003SPEC
7 files WCAP-AT1H Aluminum Electrolytic Capacitors22 µF 10000 -25 °C up to +105 °C 557 452 20 5 13 20 ATJI200220M400DSPACK000 ±20% 400
865080257014SPEC
7 files WCAP-ASLI Aluminum Electrolytic Capacitors1000 µF 2000 -55 °C up to +105 °C 740 100 19 10 10.5 ASEF105102M010DVCTEB000 0.150.1 MΩ ±20% SMT 10
885012006042SPEC
7 files WCAP-CSGP MLCCs 25 V(DC)470 pF 1.6 NP00603471J025DFCT1000010 GΩ 0.8 0.8 ±5% 0603 -55 up to +125 °C 1000 NP0 Class I 0.4 25
885012206076SPEC
7 files WCAP-CSGP MLCCs 25 V(DC)1 µF 10 1.6 X7R0603105K025DFCT100000.5 GΩ 0.8 0.8 ±10% 0603 -55 up to +125 °C X7R Class II 0.4 25
885012206089SPEC
7 files WCAP-CSGP MLCCs 50 V(DC)10 nF 2.5 1.6 X7R0603103K050DFCT1000010 GΩ 0.8 0.8 ±10% 0603 -55 up to +125 °C X7R Class II 0.4 50
885012007063SPEC
7 files WCAP-CSGP MLCCs 50 V(DC)1 nF 2 NP00805102J050DFCT1000010 GΩ 1.25 0.8 ±5% 0805 -55 up to +125 °C 1000 NP0 Class I 0.5 50
885012208069SPEC
7 files WCAP-CSGP MLCCs 25 V(DC)10 µF 10 3.2 X7R1206106K025DFCT100000.01 GΩ 1.6 1.6 ±10% 1206 -55 up to +125 °C X7R Class II 0.5 25
885012109014SPEC
7 files WCAP-CSGP MLCCs 25 V(DC)22 µF 5 3.2 X5R1210226M025DFCT100000.005 GΩ 2.5 2.5 ±20% 1210 -55 up to +85 °C X5R Class II 0.6 25
885012006079SPEC
7 files WCAP-CSGP MLCCs 100 V(DC)100 pF -55 °C up to +125 °C 1.6 NP00603101J100DFCT1000010 GΩ 0.8 0.8 ±5% 0603 -55 up to +125 °C 1000 NP0 Class I 0.4 100
885012206111SPEC
7 files WCAP-CSGP MLCCs 100 V(DC)3.3 nF -55 °C up to +125 °C 2.5 1.6 X7R0603332K100DFCT1000010 GΩ 0.8 0.8 ±10% 0603 -55 up to +125 °C X7R Class II 0.4 100
750318659SPEC
Offline Transformer 27.05 32.25 22.86
Samples
Order Code Data­sheet Simu­lation Downloads Product seriesPinsApplicationPCB/Cable/PanelModularityWire SectionIR VDE
(A)
CEndurance
(h)
Operating TemperatureIRIPPLE
(mA)
ILeak
(µA)
DF
(%)
Pitch
(mm)
Ø D
(mm)
L
(mm)
Technical ReferenceZ
(Ω)
dV/dt
(V/µs)
DF @ 1 kHz
(%)
RISOW
(mm)
H
(mm)
Tol. CSizeOperating TemperatureQCeramic TypeFl
(mm)
ISAT
(A)
RDC typ.
(mΩ)
fres
(MHz)
VersionZ @ 100 MHz
(Ω)
Zmax
(Ω)
Test Condition ZmaxIR 2
(mA)
RDC max.
(mΩ)
TypeIR
(A)
L
(µH)
VR
(V (AC))
VT
(V (AC))
Samples