12.4 A 7.5W-output-power 96%-efficiency capacitor-free single-inductor 4-channel all-digital integrated DC-DC LED driver in a 0.18μm technology. - Stefan Dietrich; Sebastian Strache; Bastian Mohr; Jan Henning Mueller; Leo Rolff; Ralf Wunderlich; Stefan Heinen (ISSCC, 2015)

A digital pulse width modulation closed loop control LDMOS gate driver for LED drivers implemented in a 0.18 μm HV CMOS technology. - Sebastian Strache; Leo Rolff; Stefan Dietrich; Michael Hanhart; Tobias Zekorn; Ralf Wunderlich; Stefan Heinen (CICC, 2017)

An Integrated Low Drop Out Regulator with Independent Self Biasing Start Up Circuit. - Leo Rolff; Eva Schulte Bocholt; Ralf Wunderlich; Stefan Heinen (ICECS, 2018)

A 32 MHz Crystal Oscillator with Fast Start-Up Using Dithered Injection and Negative Resistance Boost. - Markus Scholl; Ralf Wunderlich; Stefan Heinen; Tobias Saalfeld; Christoph Beyerstedt; Fabian Speicher; Jonas Meier; Michael Hanhart; Leo Rolff; Vahid Bonehi; Moritz Schrey (ESSCIRC, 2019)

Self-Calibrating Digital-to-Time Converter in CMOS for Advanced Control in Smart Gate Drivers. - Eva Schulte Bocholt; Leo Rolff; Ralf Wunderlich; Stefan Heinen (NEWCAS, 2019)

Startup Behaviour of Power Managment Unit for an Integrated Gate Driver. - Leo Rolff; Eva Schulte Bocholt; Ralf Wunderlich; Stefan Heinen (PRIME, 2019)

Design of a Flexible Bandgap Based High Voltage UVLO with Pre-Regulator. - Jan Grobe; Michael Hanhart; Fabian Maul; Léon Weihs; Leo Rolff; Ralf Wunderlich; Stefan Heinen (ICECS, 2020)

An integrated Boost Controller with MPPT for Submodule PV Applications. - Michael Hanhart; Leo Rolff; Léon Weihs; Jan Grobe; Jonas Zoche; Ralf Wunderlich; Stefan Heinen (ESSCIRC, 2021)

A Half-Bridge Gate-Driver for high-efficient Boost Converter Applications with single-sided ZVS and an adaptive Ringing Suppression Technique. - Michael Hanhart; Jonas Zoche; Jan Grobe; Léon Weihs; Leo Rolff; Ralf Wunderlich; Stefan Heinen (ESSCIRC, 2022)