Compact, Intelligent, Digitally Controlled IGBT Gate Drivers for a PEBB-Based ILC Marx Modulator

Conference · Mon Jun 07 04:00:00 EDT 2010 · Conf.Proc.C100523:wepd100,2010

OSTI ID:981691

Nguyen, M. N.; Burkhart, C.; Olsen, J. J.; Macken, K.

SLAC National Accelerator Laboratory has built and is currently operating a first generation prototype Marx klystron modulator to meet ILC specifications. Under development is a second generation prototype, aimed at improving overall performance, serviceability, and manufacturability as compared to its predecessor. It is designed around 32 cells, each operating at 3.75 kV and correcting for its own capacitor droop. Due to the uniqueness of this application, high voltage gate drivers needed to be developed for the main 6.5 kV and droop correction 1.7 kV IGBTs. The gate driver provides vital functions such as protection of the IGBT from over-voltage and over-current, detection of gate-emitter open and short circuit conditions, and monitoring of IGBT degradation (based on collector-emitter saturation voltage). Gate drive control, diagnostic processing capabilities, and communication are digitally implemented using an FPGA. This paper details the design of the gate driver circuitry, component selection, and construction layout. In addition, experimental results are included to illustrate the effectiveness of the protection circuit.

• Research Organization: SLAC National Accelerator Laboratory (SLAC)
• Sponsoring Organization: US DOE Office of Science (DOE SC)
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 981691
• Report Number(s): SLAC-PUB-14109
• Conference Information: Journal Name: Conf.Proc.C100523:wepd100,2010
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATORS
Accelerators
ACCSYS
ENG
INST
CAPACITORS
COMMUNICATIONS
CONSTRUCTION
DESIGN
DETECTION
ELECTRICAL FAULTS
FERMILAB ACCELERATOR
KLYSTRONS
MONITORING
PERFORMANCE
PROCESSING
SATURATION
SPECIFICATIONS
STANFORD LINEAR ACCELERATOR CENTER