Pulsed IV

Posted by: admin.elkay November 27, 2020 No Comments

Types of Pulsed IV

Auriga AU-5

Introducing Auriga’s 5th generation pulsed IV/RF characterization system delivers unparalleled performance, capturing measurements with incredible speed and accuracy. Pulsed IV (current-voltage) measurements have emerged as the preferred method of capturing current-voltage characteristics of active devices such as field effect (FETs) and bipolar junction (BJTs) transistors.

With the growing popularity of higher-power devices, like GaN HEMTs, LDMOS, SiC, and graphene, current and voltage requirements are constantly being pushed higher and higher.

TRI - STATE Pulsed I-V

Traditional Pulsed IV systems are comprised of two pairs of power supplies used for the Quiescent and Non Quiescent states. Focus now offers a new TRI-State pulse system which includes a third pair of power supplies allowing the user to create a Pre-Pulse state.

Nonlinear charge trapping effects have puzzled designers for years and the standard two state pulse systems are insufficient to fully characterize memory effects for the GaN FETs.

Focus’ TRI-State Pulsed IV system offers not only an efficient isothermal measurement condition, but also allows the user to control and characterize various charge trapping states.

Key Features

  • 3 Measurement States; Quiescent (OFF-State), Non Quiescent (ON-State), and Pre-State.
    The Pre State is a short high voltage state used to activate
    the traps in the semiconductor.
  • Adjustable delay (Δt) between the Pre state and Non Quiescent state down to 0s.
  • Independently adjustable timing settings for the Three-state gate pulser and drain pulser
  • Easy Integration into existing mainframes


The MPIV – Modular Pulsed IV is used for High Power current & voltage characterization of semiconductor devices. It is also well suited for applications requiring precise high current and voltage pulses. The Drain Pulse Module (DPM) uses an external high-current supply while the Gate Pulse Module (GPM) has an internal high-precision voltage supply. Additionally, the MPIV can be synchronized with an external or internal trigger.

The DPM is the core of the system. Its internal microcontroller uses precision Pulse Width Modulation (PWM) modules with complementary outputs and programmable dead-time in order to generate and synchronize the pulses for both drain and gate bias. The pulse width is adjustable from 200ns to 2ms; pulse repetition rate from 500Hz to 1MHz, with a maximum duty cycle of 50%.

Two internal N-channel MOSFETs within the drain module support voltages up to 200V and currents up to 17A. Both the pulse and
quiescent bias voltages are delivered via external DC power supplies thereby making the Modular Pulsed IV a customizable solution.