Post on 21-Apr-2020
HG-398A FU-1904 Printed in Japan <IP>
www.MitsubishiElectric.com/semiconductors/
Mitsubishi Electric Semiconductors & Devices Website
New publication, effective Apr. 2019.Specifications subject to change without notice.
2019
HVIC
HVIC
21
Mitsubishi Electric HVICs contribute to the high reliability of various power supply equipment by equipping them with various the protection functions.
1200V HVIC with Desaturation Detection for Power Semiconductors M81748FP
M81745JFP contributes to the high reliability and the optimized switching control of the voltage converter and the power semiconductor for automotive applications.
*1 RESURF: REduced SUrface Field *2 PolyRFP: Polycrystalline silicon Resistor Field Plate
HEV: Hybrid Electric Vehicle IPM: Intelligent Power Module RESURF:REduced SURface Field
M81748FP achieves the high durability of 1200Vthat is most suitable for AC400V inverter systems.●High durable 1200V rating that is applicable to an industrial use like AC400V inverter systems • The HVIC achieves low leakage current limited to a maximum 10uA of HVIC by applying a 1200V divided RESURF*1
structure to optimize its surface structure. • PolyRFP*2 structure of chip surface greatly enhances the durability.●High tolerance to switching noise helps achieve highly reliable inverter systems • High latch-up immunity (parasitic Vertical -PNP transistor action) realized with chip’s low-impedance buried layers.●Desaturation detection for reduced power loss reduction in power semiconductors • P-side and N-side desaturation detection prevents overcurrent thermal destruction of the power semiconductors by
using 1200V P-channel MOSFET. • The HVIC directly detects shorts and earth faults in power semiconductors on P-side and transmits fault signals to
N-side, shutting down systems. • Desaturation detection is sperior to the detection method which is used the shunt resistor for the power loss reduction
in power semiconductors.
PP
PP
P+ N
N
N+ Buried Layer
P+
P+
N+ N+NN N+
N+ N+
P-Sub.
P–
P– (Epi)
Low Voltage Region High Voltage RegionRESURF Isolation Region(Length:Liso)
Source
Micro-N+ Buried Layer
GateDrain
High resistivity Poly-Si (Spiral)
The cross section structure of 1200V Nch MOSFET that applied the divided RESURF*1 structure
Configuration example of HEV
Low-voltage battery
Automotive equipmentAir conditioner / Car navigation
system / Headlights
DC-DCconverter
Generator
High-voltagebattery
IPM
Engine Power splitmechanism
Generator,Motor
600V HVIC for Automotive Applications M81745JFP
HVICHalf Bridge
Driver×1M81745JFP
Application circuit examples of DC-DC converter
Innovative Power Devicesfor a Sustainable Future
High voltage floating circuit is built-in because it is a high side gate drive.Built-in signal transmission (level shift) function for transmitting signals to the floating circuitHigh side gate driver section has a high voltage isolation structure.Level shift section has a high voltage NMOS structure.
Main Features
HVICs
General-purpose inverters
AC servo/DC brushless motors
Fluorescent lights/HID lighting//LED lightingVoltage
translator
Induction heatingcooking stoves
Air conditioners/Washing machines
High-voltage integrated circuits (HVICs) are capable of directly driving the gates of power MOSFETs and IGBTs using signals input from microcomputers, thereby replacing power MOSFET and IGBT gate drivers that use pulse transformers and photocouplers. They are insulated by a level shift circuit inside the semiconductor chip. Since a variety of protection functions, such as power supply undervoltage, interlocking, input signal filter, and error output, are built into the IC, reliability of the power supply equipment is enhanced.Mitsubishi Electric has many half-bridge products that are commonly used in drive circuits. Our HVIC products comply with the European Union’s Restriction of Hazardous Substances Directive for electrical equipment, 2011/65/EU and 2015/863/EU.
●High reliability that is applied to the requirement of automotive application • Operating temperature range of -40 to +125°C. • UVLO (Under voltage lockout) circuit prevents
power semiconductor from the destruction by the power supply voltage drop.
• High-temperature and long-term burn-in tests assure high reliability.
• The HVIC contributes to the downsizing of the voltage converter by reducing the peripheral parts like the comparator and photocouplers in inverter system.
●High performance supports effective control of the voltage converters • The HVIC achieves low leakage current limited to
a maximum 1uA of HVIC by applying a 600V divided RESURF structure to optimize its surface structure.
• Easy to control the power semiconductors by matching the delay time of the high-voltage side and low-voltage side.
MCU
High-sidedrive circuit
Low-sidedrive circuit
High-sideMOSFET
Low-sideMOSFET
Attention points of HVIC use
The floating power supply method Configuration exampleof gate driver for motor
Bootstrap circuit method and basic operation
Electrical charge and discharge current route when HVIC is operated
The emitter/source potential of high-side IGBT/MOSFET referenced to GND changes to the voltage of the HV terminal from 0V when operating the application. Therefore, to drive high-side IGBT/MOSFET, the power supply of the high-side drive circuit of HVIC should have potential which is higher by VBS than the emitter/source potential of high-side IGBT/MOSFET. One of the methods to apply this voltage is the floating power supply method. Fig_right shows the example of the floating power supply method.
Bootstrap circuit method is used in place of the folating power supply method. The bootstrap capacitor(C1) is charged through the resistor(R1) and bootstrap diode(D1) by VCC, and the high-side drive circuit of HVIC is driven by the voltage of the capacitor(C1). Fig_right shows the example of the bootstrap circuit method.
High-sidedrive circuit
Low-sidedrive circuit
High-sideMOSFET
Low-sideMOSFET
High-sidedrive circuit
Low-sidedrive circuit
High-sideMOSFET
Low-sideMOSFET
Fig_right shows the electrical charge and discharge current route of C1 when HVIC is regularly operated.
■Setting of bootstrap capacitor (C1)
To drive high-side MOSFET, the bootstrap capacitor is charged by turning on low-side MOSFET.The inrush charging current is from the charging path on the rightID=(VCC/R1)e-t/(R1・C1) from the initial condition t = 0ID=VCC/R1
VC1 is shown below. (VF:Voltage between D1 terminals, VDS:Voltage beween drain and souce of low-side MOSFET)
VC1=VCC-VF-VDS・・・(1)
Initial charge and the voltage between bootstrap capacitor (C1)
The capacitance value C1 is shown below. (T1:Maximum on-time of high-side MOSFET, IBS:High-side drive circuit consumption current of HVIC, ΔV:Electrical discharge allowance voltage between C1 terminals)C1 = IBS × T1 / ΔV + margin ・・・(2)
IBS changes depending on gate capacitance of MOSFET and carrier frequency. And (1) and (2) expression are simplified. So please set the capacitance value C1 based on evaluation of your system.
Simple calculation of bootstrap capacitor (C1)
Discharge route
Application circuit examples
MCU
[Half Bridge Driver]×3or
[3 Phase Bridge Driver]×1or
[3 Phase High side Side Driver]+[Low Side Driver]
MCU [Half Bridge Driver]×1
MCU [Half Bridge Driver]×1
Configuration example of gate driver for IH cooking heater
Configuration exampleof gate driver for DC-DC converter
Heating coil
Floating power supply
HVIC
HVIC
HVIC
HVIC
HVIC
HVIC
Floating power supply method
Bootstrap circuit system
Electrical charge and dischargecurrent route when HVIC is operated
Charge route
1200
1200
1.0
2.0
InputSignal
InputSignal
UV,IL,NF,SC,FO,FORST,FOINM81738FP
M81748FP2
2 4th
4th
4th
1
1×2
Half Bridge 3rd
Type nameNumber of
inputsignals
Number ofinput
signals
Number ofinput
signals
Device drive systemPackage outline
Internal functionDead timecontrolGeneration
Floatingsupply
voltage[V]Output current
[A](typ) Package type Number of terminals Column gapof mount pad(mil) Lead pitch(mm)
SSOP
SSOP
24
24
300
300
0.8
0.8
★★:Under Development■1200V floating supply voltage
UV,IL,NF,DESAT,FO,CFO,FOIN,SS
Number ofinput
signals
24
24
1.75/-0.8
1.75/-0.8
-
-
M81764FP
M81762FPDual Low side
Single Low Side 4th1
4th1×2
■24V floating supply voltage
DESAT: Desaturation
High activeUV,SC,FO,CFOHigh activeUV,SC(×2),FO,CFO
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
0.2/-0.35
0.2/-0.5
0.2/-0.35
0.2/-0.35
0.2/-0.35
0.5
1.0
2.5
3.5
0.2/-0.35
3.5
3.5
0.5
3.25
0.2
UV,IL,NF
UV,IL
UV,IL
UV,IL,NF
UV,IL
UV,IL,SD
UV,NF
UV,IL,NF
UV,IL,NF
UV,IL,NF
UV
UV,SD
UV
M81749FP
M81775FP
M81736FP
M81776FP★★
M81747FP
M81735FP
M81774FP
M81770FP
M81767FP
M81734FP
M81740FP
M81737FP
2×3Ф3 Phase
Half Bridge
4th
Dual High Side
■600V floating supply voltage
UV,IL,SC,FO,CFO
M81747JFP(for automotive)M81767JFP★★(for automotive)M81745JFP(for automotive)
UV,NF,SC,FO,FORST,FOIN
MEMO
InputSignal
InputSignal
InputSignalInputSignalInputSignal
InputSignal
InputSignal
InputSignal
InputSignal
InputSignal
InputSignal
InputSignal
Internal
Internal
InputSignal
SSOP
SSOP
SOP
SOP
SOP
SOP
SSOP
SOP
SOP
SOP
SOP
SOP
SOP
SOP
SOP
24
36
8
8
8
16
24
16
8
8
8
16
8
8
16
300
450
225
225
225
300
300
300
225
225
225
300
225
225
300
0.8
0.8
1.27
1.27
1.27
1.27
0.8
1.27
1.27
1.27
1.27
1.27
1.27
1.27
1.27
SOP
SOP
8
16
225
300
1.27
1.27
Line-up of HVIC
Type nameDevice drive systemPackage outline
Internal functionDead timecontrolGeneration
Floatingsupply
voltage[V]Output current
[A](typ) Package type Number of terminals Column gapof mount pad(mil) Lead pitch(mm)
Type nameDevice drive systemPackage outline
Internal functionDead timecontrolGeneration
Floatingsupply
voltage[V]Output current
[A](typ) Package type Number of terminals Column gapof mount pad(mil) Lead pitch(mm)
<Term>
For details of internal functions and package outline, please refer to the data sheet of each product.
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