“Analog engineers know that when using MOSFETs to build a circuit, it is often necessary to use a fast recovery diode (FRD), because the reverse recovery time of the diode is almost zero, and the switch can be turned off in an instant, which can prevent the turn-off reaction due to The phenomenon of chip burning caused by the simultaneous conduction of the upper and lower tubes caused by the slow speed.
“
fast recovery diode
Analog engineers know that when using MOSFETs to build a circuit, it is often necessary to use a fast recovery diode (FRD), because the reverse recovery time of the diode is almost zero, and the switch can be turned off in an instant, which can prevent the turn-off reaction due to The phenomenon of chip burning caused by the simultaneous conduction of the upper and lower tubes caused by the slow speed.
In response to the increasingly wide application requirements of high voltage, high efficiency, low power consumption, and fast reverse recovery required by Electronic design, Toshiba’s fast recovery diode CMF02A using silicon diffusion junction technology meets the AEC-Q101 automotive-grade certification standard. , using surface mount package, can meet the installation requirements of small space and achieve higher power density.
Basic characteristics of the device
The CMF02A is a FRD diode for high speed switching purposes, FRD has a shorter reverse recovery time (trr) compared to typical diodes, thus has faster switching time and lower losses. Of course, the basic function of CMF02A is still used as a rectifier diode, that is, the current can flow from the anode to the cathode (forward), but not from the cathode to the anode (reverse). A rectifier diode has a forward current of 0.5A or more and is designed to convert alternating current (AC) to direct current (DC). Its main features are as follows:
(1) Repetitive peak reverse voltage: VRRM=600V
(2) Average forward current: IF (AV) = 1.0A
(3) Peak forward voltage: VFM=2.0V (maximum value) @IFM=1.0A (pulse measurement)
(4) Reverse recovery time: trr=100ns (maximum value) @IF=1.0A, di/dt=-30A/µs
(5) 2-pin surface mount package using M-FLATTM process, small and thin ultra-small tube helps to achieve high-density mounting; chip size is 2.4mm × 4.7mm × 0.98mm (width × length × height )
Package and Internal Circuit
Functional characteristic analysis
In what applications can FRD be used? While normal rectifier diodes are often used in applications operating at frequencies below 500Hz, FRDs recover very quickly and can be used in switching applications from a few kHz to 100kHz, such as switching power supplies, inverters, DC-DC converters, etc.
As we all know, every power device needs a specific time to turn off its state. The so-called reverse recovery time trr is the time it takes for the diode to turn on and off after the applied voltage changes from forward to reverse, and FRD is designed to shorten this time.
Diode trr switching waveform example
What is the trr level of FRD? Usually the trr of rectifier diodes is from several microseconds to tens of microseconds, while the trr of FRDs is from tens of nanoseconds to hundreds of nanoseconds, which is about 1/100 of the speed of ordinary rectifiers. The smaller the trr, the smaller the switching loss.
CMF02A has all the characteristics of FRD, and is a diode with good switching characteristics and short reverse recovery time. And the device has passed the AEC-Q101 vehicle-level certification, so that it can not only be used in electronic circuits such as switching power supplies, pulse width modulators (PWM), frequency converters, but also switching regulators and DC-DC conversion in automobiles. devices, motor drives, etc.
Addressing Automotive Power Design Challenges
It is worth mentioning that the CMF02A is a mature product that Toshiba has already mass-produced and is suitable for various high-speed rectification (fast recovery) applications. It helps to solve the increasingly complex system design including vehicle power supply and the need to manage more voltage rails. , to provide more power in a smaller space and other design challenges, speeding up manufacturers’ time to market.
“Analog engineers know that when using MOSFETs to build a circuit, it is often necessary to use a fast recovery diode (FRD), because the reverse recovery time of the diode is almost zero, and the switch can be turned off in an instant, which can prevent the turn-off reaction due to The phenomenon of chip burning caused by the simultaneous conduction of the upper and lower tubes caused by the slow speed.
“
fast recovery diode
Analog engineers know that when using MOSFETs to build a circuit, it is often necessary to use a fast recovery diode (FRD), because the reverse recovery time of the diode is almost zero, and the switch can be turned off in an instant, which can prevent the turn-off reaction due to The phenomenon of chip burning caused by the simultaneous conduction of the upper and lower tubes caused by the slow speed.
In response to the increasingly wide application requirements of high voltage, high efficiency, low power consumption, and fast reverse recovery required by Electronic design, Toshiba’s fast recovery diode CMF02A using silicon diffusion junction technology meets the AEC-Q101 automotive-grade certification standard. , using surface mount package, can meet the installation requirements of small space and achieve higher power density.
Basic characteristics of the device
The CMF02A is a FRD diode for high speed switching purposes, FRD has a shorter reverse recovery time (trr) compared to typical diodes, thus has faster switching time and lower losses. Of course, the basic function of CMF02A is still used as a rectifier diode, that is, the current can flow from the anode to the cathode (forward), but not from the cathode to the anode (reverse). A rectifier diode has a forward current of 0.5A or more and is designed to convert alternating current (AC) to direct current (DC). Its main features are as follows:
(1) Repetitive peak reverse voltage: VRRM=600V
(2) Average forward current: IF (AV) = 1.0A
(3) Peak forward voltage: VFM=2.0V (maximum value) @IFM=1.0A (pulse measurement)
(4) Reverse recovery time: trr=100ns (maximum value) @IF=1.0A, di/dt=-30A/µs
(5) 2-pin surface mount package using M-FLATTM process, small and thin ultra-small tube helps to achieve high-density mounting; chip size is 2.4mm × 4.7mm × 0.98mm (width × length × height )
Package and Internal Circuit
Functional characteristic analysis
In what applications can FRD be used? While normal rectifier diodes are often used in applications operating at frequencies below 500Hz, FRDs recover very quickly and can be used in switching applications from a few kHz to 100kHz, such as switching power supplies, inverters, DC-DC converters, etc.
As we all know, every power device needs a specific time to turn off its state. The so-called reverse recovery time trr is the time it takes for the diode to turn on and off after the applied voltage changes from forward to reverse, and FRD is designed to shorten this time.
Diode trr switching waveform example
What is the trr level of FRD? Usually the trr of rectifier diodes is from several microseconds to tens of microseconds, while the trr of FRDs is from tens of nanoseconds to hundreds of nanoseconds, which is about 1/100 of the speed of ordinary rectifiers. The smaller the trr, the smaller the switching loss.
CMF02A has all the characteristics of FRD, and is a diode with good switching characteristics and short reverse recovery time. And the device has passed the AEC-Q101 vehicle-level certification, so that it can not only be used in electronic circuits such as switching power supplies, pulse width modulators (PWM), frequency converters, but also switching regulators and DC-DC conversion in automobiles. devices, motor drives, etc.
Addressing Automotive Power Design Challenges
It is worth mentioning that the CMF02A is a mature product that Toshiba has already mass-produced and is suitable for various high-speed rectification (fast recovery) applications. It helps to solve the increasingly complex system design including vehicle power supply and the need to manage more voltage rails. , to provide more power in a smaller space and other design challenges, speeding up manufacturers’ time to market.
The Links: 6MBP160RUA060-016 GP2500-TC41-24V