I design mains switching supplies end to end: active boost PFC to a regulated 380–400 VDC bus, isolated GaN flyback conversion, and four-switch buck-boost charging, to IEC and DIN standards with CE marking.
1.60 mm overall · 6 layers
Himanshu Gautam
Hardware engineer. Power electronics and PCB design.
Designing mains switching supplies at Gessler GmbH from India. Targeting hardware roles in Ireland and the EU.
Scroll to explode the stack
Download CV (PDF, 53 KB)Discipline
Power electronics
Based
India · UTC+5:30
Standards
IEC · DIN EN · CE
Available
45 days notice
Positioning
Discipline
Power electronics
Based
India · UTC+5:30
Standards
IEC · DIN EN · CE
8.0 mm
Measured
84 W
Multi-output supply, released Multi-output supply
93 %
Efficiency at full load
380–400 VDC 380–400 V
Regulated PFC bus
6 layers
Impedance-controlled carrier Carrier board
Selected work
U1 Flown
Pico satellite (CANSAT)
Sole electronics engineer
2 round boards XBee 2.4 GHz Teensy 4.0
CANSAT INDIA 2023 Flight photography on request
U2 Released
Multi-output AC–DC power supply, 84 W
Owned the power stage · Gessler GmbH
90–264 VAC in 380–400 VDC bus 93 % @ 84 W
IEC 61000-3-2 DIN EN 61347-2-7 Client confidential — reasoning published, design not
U3 Released
NiMH battery charging and monitoring board
Charger design and layout · Gessler GmbH
4-switch buck-boost 3 cells NiMH 0402 field
IEC 62133 Client confidential — reasoning published, design not
U4 Released
Six-layer RK3399 carrier board
Layout and impedance control · Gessler GmbH
PCIe Gen2 ×1 50 Ω / 90 Ω diff 2 × SMA RF launch
IPC-2221B Client confidential — reasoning published, design not
Capability
Six domains, named by what is owned
Switch-mode conversion
CCM boost PFC, isolated GaN flyback, four-switch buck-boost
Magnetics
Custom flyback transformer specified with Würth, verified independently in PI Expert Custom flyback transformer specified with Würth, verified in PI Expert
PCB layout
Six-layer impedance-controlled stackups, 50 Ω single-ended, 90 Ω differential, RF launches Six-layer impedance-controlled stackups, 50 Ω and 90 Ω differential
Standards and compliance
IEC 61000-3-2, DIN EN 61347-2-7, CE marking, creepage and clearance, hi-pot verification IEC 61000-3-2, DIN EN 61347-2-7, CE marking, hi-pot verification
Embedded bring-up
I²C control of flyback controllers, isolated power line communication subsystem I²C control of flyback controllers, isolated power line communication
Simulation and bench
LTspice, PI Expert, electronic load and thermal measurement on real hardware LTspice, PI Expert, electronic load and thermal measurement
What I'm building now
Designator
U5
Ownership
Own work, own time
USB-C PD programmable bench supply
In progressA 0–20 V, 0–5 A programmable supply taking power from a USB-C PD source, with current sense on both rails and a constant-current mode. Schematic complete, first layout in review. I publish the measurements as they come off the bench, including the ones that disagree with the simulation. A 0–20 V, 0–5 A programmable supply taking power from a USB-C PD source, with current sense on both rails. Schematic complete, first layout in review.
Work authorisation
The question every EU recruiter asks, answered before it is asked.
Irish permit route
Critical Skills Employment Permit eligible
Occupation
Electronics Engineer · Critical Skills list
Labour Market Needs Test
Does not apply
Notice period
45 days · open to relocation