B3

HV switches with fixed on-time, high di/dt, ultra fast, MOSFET  

● HV switch with extremely fast turn-on rise time ● True gate control (no avalanche technique) for highest reliability over a wide range of operating temperatures and load conditions ● Very low impedance ● Very EMC tolerant ● Available with on-time options from 5 ns to 1 μs ● Designed for attachment on printed circuit boards (PCB)

Model [sorted by
dimensions]

Description / Comment
● Preferred stock type ○ Limited stock  X Not new development

Options (1)

HFB

High Frequency Burst: Improved burst capability of driver by means of external buffer capacitors. Recommended if more than 10 pulses with less than 10 μs spacing are generated.

HFS

High Frequency Switching: External supply of auxiliary driver voltage (50-350 VDC according to type). Necessary if the specified “Maximum Operating Frequency” shall be exceeded. (2)

LP

Low Pass: Low pass filter at the control input. Propagation delay time will be increased by ~50 ns. Jitter + 500 ps.  Improved noise immunity and  less critical wiring in high speed applications. (3)

OT-5n

On-Time Reduction:  On-Time reduced to 5 ns

OT-10n

On-Time Reduction:  On-Time reduced to 10 ns

OT-20n

On-Time Reduction:  On-Time reduced to 20 ns

OT-P

Programmable On-Time: On-Time adjustable in certain limits by means of external programming resistors. (2)

OT-C

Customized On-Time:  On-Time according to customer’s specifications. Any value between 20 ns and 1 μs. (2)

MIN-PS

Minimum Pulse Spacing:  Individually increased Recovery Time to ensure a minimum HV pulse spacing indepently of control pulse spacing. For safety relevant circuits.

ST

Stage Tapping:  Connectors at the individual stages of stack in order to utilize single power semiconductors. To achieve fast rise times also at very low operating voltages (<0.01xVo).

LNC

Low Natural Capacitance: C_N reduced by approximately 30%. To minimize capacitive power losses in applications with high switching frequency and high switching voltage..

LL

Low Leakage Current: Off-state current reduced to less than 10%  of the specified value. Not available in connection with the cooling fin options and for switches of the UF series.

ISO-25

25 kV Isolation:  Isolation Voltage increased to  25 kVDC. Housing dimensions may change for some models.

ISO-40

40 kV Isolation:  Isolation Voltage increased to  40 kVDC. Housing dimensions may change for some models.  Only in connection with option PT-HV.

ISO-80

80 kV Isolation:  Isolation Voltage increased to  80 kVDC. Housing dimensions may change for some models.  Only in connection with option PT-HV.

I-PC

Integrated Part Components: Integration of small part components according to customer’s specifications (e.g. buffer capacitors, snubbers, damping resistors, diodes, opto couplers). (2)

I-FWD

Integrated Free-Wheeling Diode:  Built-in parallel diode with short recovery time. In connection with inductive load only.

I-FWDN

Integrated Free-Wheeling Diode Network: Built-in parallel diode plus serial blocking diode  with short recovery time. In connection with inductive load only.

FOI-C

FOO-F

I-PC

Integrated Part Components: Integration of small part components according to customer’s specifications (e.g. buffer capacitors, snubbers, damping resistors, diodes, opto couplers). (2)

PT-C

Pigtail for Control Connection: Flexible leads (l=75 mm) with PCB connector. This option is only relevant for switching modules with pins. Recommended for modules with options CF & GCF.

PIN-C

Pins for Control Connection: Gold plated pins for printed circuit board designs (special sockets available). This option is only relevant for switching modules which have pigtails as standard.

PT-HV

Pigtails for HV Connection: Flexible leads with cable lugs. For increased creepage. PT-HV is standard for all types with >25 kV switching voltage. Not recommended in extremely fast circuits.

ST-HV

Screw Terminals for HV Connection: Threaded inserts at the bottom of module (if not standard). For PCB design. Operation above 25 kV requires liquid insulation (Galden®/Oil) or potting.

UL94

Flame Retardant Casting Resin: Casting resin according to UL-94-VO. Minimum order quantity required. (2)

TH

Tubular Housing: Tubular instead of rectangular housing. Adaption to specific ambient conditions or in case  of difficult assembly situations. ‚

FC

Flat Case: Height of standard plastic housings reduced to 19 mm or less. Not in combination with cooling options CF, GCF and DLC.

ITC

Increased Thermal Conductivity: Special moulding process to increase the thermal conductivity of the module. Pd(max) will be increased by approx. 20-30%. (2)

C-DR

Cooling for Driver: Extra cooling for the driver and control electronics. Recommended in combination with option HFS at higher switching frequencies. (2)

GCF

Grounded Cooling Flange: Nickel-plated copper flange for High Power applications. Max. isolation voltage 40kV. Increased coupling capacitance Cc.

GCF-X2

Grounded Cooling Flange, Max. Continuous Power Dissipation increased by x2:  Thermal resistance “Switch to Flange” reduced for twice the power capability. (2)

ILC

Indirect Liquid Cooling:  Liquid cooling for all kind of conductive coolants including mains water. Internal heat exchanger made of ceramics. For medium power applications.

DLC

Direct Liquid Cooling: Internal cooling channels arround the power semiconductors. The most efficient cooling solution especally for high frequency applications. For non-conductive coolants only.

HI-REL

High Reliability / MIL Versions:  Available on request. (2)

(1) New option code:  Data sheets may differ from this coding system (especially older ones) and do not indicate all possible options as per above table.    (2) Please consult factory for detailed information.
(3) These options are EMC-relevant and are recommended for industrial power applications,  difficult noise ambients,  prototype experiments with flying leads and for users without special EMC design experience.