half bridge

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  1. C

    IRLZ44N and IR2110 not switching properly for generating magnetic field

    Hi, I'm having issues with a IR2110 based MOSFET driver circuit, specifically IRLZ44N, the signal comes in from my signal generator at 5vpp, then goes into pin 12 on the IR2110 and reaches it correctly, pin 11 and 10 to GND, pin 9 to pin 3 on the 7805 5v regulator, pin 3 is vcc so it goes to the...
  2. A

    Half Bridge SMPS using SG3525+IR2110, Output not changing with duty cycle

    Hi, I have built an smps, Half Bridge using SG3525 + IR2110. It works fine - Except for changing(control) the output voltage by changing the duty cycle. The nominal dc voltage is 270. Half is 135v The transformer core is E42/21/15 Primary windings : 20 Secondary 4+4 : gets 32v - needed...
  3. C

    Half Bridge Boost Converter Transients and Output Voltage

    Hello all, I'm designing my first half bridge boost converter and I've got these two problems: These transients that appear no matter what simulation model of MOSFET I use. I've got these massive spikes. They even appear when I insert larger diodes onto the MOSFETs. Is this an artifact of the...
  4. shakyhands

    Why Is My Gate Driver Outputting ±12V Instead of +16V/-8V?

    Hello, I’m using a PDME2-S15-S24-S isolated power supply to power the IGBT side of the gate driver. The power supply outputs 24-ish V, and I’m using a TL431-Q1 adjustable shunt regulator to create a +16V and -8V rail. When I measure the supply rails, I can confirm +16V and -8V are present...
  5. One Does Not Simply

    Trouble with NMOS half-bridge

    Hi, I am trying to drive a half-bridge. circuit-1 is the main circuit diagram relevant to this post. circuit-2 contains the remaining circuit. The CMOS-H pair is driven by Q, and the CMOS-L pair is driven by Q-INV. CMOS-H drives IPP-H, while CMOS-L drives IPP-L. Q, Q-INV, and the rest of the...
  6. B

    L6384 H-Bridge drive funcion.

    I recently purchased a H-bridge board that uses ST L6384d driver chips to drive 4 N mosfets. The input to the driver (pin 1) comes from a dual input NOR gate and the DT (pin3) is pulled low thru a 270k resistor. The gate has a Direction and PWM input. I have tested the board and it functions...
  7. Bilal_99

    LTSpice IR2103 simulation not running

    Hi I want to simulate this IR2103 based half bridge circuit but LT spice seems to be throwing an error: "Analysis: Time step too small; initial timepoint: trouble with node "u1:_gd_template:_input_stage:_lin_th:outp"" I got the spice model for the IR2103 from...
  8. G

    12V to ±80V adjustable isolated half bridge converter.

    I really appreciate if someone can help me a bit with this project. Its a half bridge topology DC-DC converter that takes 12V on the Input and transphorms it into a simmetrical 80V output (Maximum). The output voltage will be adjustable from ±18V to ±80V. I am using the SG3525 IC for this...
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