DBx Module introduction
Bringing ultra-high performance to the industry's broadest range of programmable DC power supplies
The DBx Module is a performance-enhancing series-connected add-on module for MagnaDC programmable DC power supplies, delivering ultra-high stability, low ripple, high precision and high accuracy, with voltage, current, and power control modes. The combination of the two products provides a broad range of magnet power supply solutions for high-energy physics and medical applications, including driving dipole, quadrupole, and steering magnets, as well as powering coils to establish stable magnetic fields. In addition, the high power density coupled with the high accuracy and low ripple characteristics make the combined solution ideal for ATE calibration applications.
Magnet steering
Drive highly inductive loads in current-mode control for applications in high-energy physics, magnet steering for particle accelerators, radiology research, and advanced cancer therapies.
Calibration and metrology
High-power capable voltage and current references, with up to 24-bit precision and extremely low temperature coefficients, provides excellent R&D and ATE calibration solutions for DC-input devices.
Up to 10x Ripple Reduction
Low ripple performance
The DBx Module Configuration A1 utilizes three stages of filters to suppress differential line-to-line EMI, common-mode line-to-ground EMI, and power supply ripple from the DC bus.
Internally fabricated common-mode and differential-mode EMI filters are integrated in the DBx Module Configuration A, providing insertion loss as high as 62 dB; typical results shown in the table below.
To filter power supply output ripple voltage, with components that can extend down to the mains power frequency, the DBx Module Configuration A utilizes a linear regulator, with a low DC voltage drop across a series-pass power semiconductor.
The regulator requires two feedback loops: one to maintain a 1.25 Vdc drop across the linear regulator and the second to produce a AC ripple canceling voltage across the series-pass power semiconductor, equal and opposite of the AC ripple voltage at the input. Adding a series connected diodes across the regulator provides protection for current surging and overvoltage transients—a weak point in conventional linear regulators.
Voltage ripple without the DBx Module present
Voltage ripple with the DBx Module present
Common mode noise without the DBx Module present
Common mode noise with the DBx Module present
Differential noise without the DBx Module present
Differential noise with the DBx Module present
Ultra-stable, high accuracy, and high resolution
An ultra-stable fluxgate direct-current current transformer (DCCT) is used to take high accuracy isolated measurements from a series connection with the power supply’s DC output. This ultra-stable transducer, combined with the DBx Module’s low temperature drift resistors and temperature stabilized digital programming circuit, provides highly granulated programming (18-bit) and readback (24-bit), and enables long-term stability less than 5 ppm. Critical components are carefully laid out within a specially designed temperature compartment to accelerate the time to temperature stabilization.
Setup and Control
DBx Module Configurations A1 and B1 are provided with copper bus bars with threaded inserts for the DC input and DC output connections. In these configurations, the DC power supply output connects to the DBx Module's DC input and all current sensing is done internal to the DBx Module. The load / device under test gets connected to the DBx Module's DC output bus bars. DBx Module Configuration C1 uses an external DCCT with a control signal providing feedback to the DBx Module via its external user I/O connector. In all configurations, so that the DBx Module can control the power supply, a provided cable connects the DBx Module's interface connector to the power supply's JS1 37-pin external user I/O connector.
Digital programming of set points, trip points, and slew rates are performed using the DBx Module via front panel knob or keypad, front panel up-down arrows for highly granual single-bit control, or using the computer interface connections via provided MagnaWEB software or user defined software using SCPI commands. Included communication interfaces include RS485 and front/rear USB with optional TCP/IP Ethernet.
< 5 ppm stability
< 0.5 ppm/°C temperature coefficient
Up to 24-bit precision
± 0.04% accuracy
Multiple configurations to address the broadest range of applications
The DBx Module is offered in three different configurations—A1, B1, and C1—differing in maximum current capability and internal stages.
| Config | EMI/Ripple Filter | High Stability, Precision, Accuracy | Max Voltage Ratings Available | Max Current Ratings Available | Form Factor |
|---|---|---|---|---|---|
| A1 | Yes | Yes | 6 to 1,000 Vdc | 75 Adc or 150 Adc | 1U Enclosure |
| B1 | No | Yes | 5 to 1,000 Vdc | 75 Adc or 150 Adc | 1U Enclosure |
| C1 | No | Yes | 5 to 1,000 Vdc | 500, 750, 1500, 3000, 5000, or 10000 Adc | 1U Enclosure + External Transducer |
Configuration A
The DBx Module Configuration A contains all stages, including the linear regulator, differential- and common-mode DC EMI filters, temperature-stabilized ultra-high stability controller, and DCCT. Configuration A occupies a 1U (1.75” high) rack-mount enclosure and is available for voltages from 6 Vdc to 1,000 Vdc and two different max current ratings, at 75 Adc or 150 Adc.
Configuration B
The DBx Module Configuration B is intended for applications that do not require additional DC filtering and contains only the temperature-stabilized ultra-high stability controller and DCCT. Configuration B occupies a 1U rack-mount enclosure and is available for voltages from 5 Vdc to 1,000 Vdc and two different max current ratings, at 75 Adc or 150 Adc.
Configuration C
The DBx Module Configuration C is intended for high-current applications, where the 1U rack-mount enclosure contains only the temperature-stabilized ultra-high stability controller, with a provided external DCCT that ties into the DBx Module through a rear connector. Configuration C is available for voltages from 5 Vdc to 1,000 Vdc and max current ratings from 300 Adc to 10,000 Adc. For high-power MT Series systems from 100 kW to 3,000 kW+, the DBx Module can be fully integrated inside the MT Series enclosure.
Model Ordering Guide
DBx Module models are defined by the configuration type and number (see "Available Configurations" table), the maximum voltage rating, and the maximum current rating. Any voltage from Magna-Power's standard MagnaDC power supply offering is available, from 10 Vdc to 1,000 Vdc. The DBx Module resolution step size and calibration is a function of its maximum ratings, therefore it's recommend to specify a model most closely matched to the requirement.
Specifications
The following specifications are subject to change without notice. Unless otherwise noted, all specifications measured at the product's maximum ratings.
| Specification | Value |
|---|---|
Stability, A1 and B1 Configuration
Full width at half maximum (FWHM)
Voltage or Current Control |
< 10 ppm; long-term drift (8 hr) |
Stability, C1 Configuration
Full width at half maximum (FWHM)
Voltage or Current Control |
< 50 ppm; long-term drift (8 hr) |
Temperature Coefficient
Voltage Control |
< 0.05 ppm/°C |
Temperature Coefficient
Current Control |
< 0.5 ppm/°C |
Rise/Fall Time
Maximum |
Voltage Mode: 6 s, 10% to 90% full scale voltage rating Current Mode: 6 s, 10% to 90% full scale current rating Power Mode: 6 s, 10% to 90% full scale power rating |
Power Loss
Configuration A1 Only |
Current output x 1.5 volts |
Warm-up Time
|
45 min |
| Specification | Value |
|---|---|
Programming Resolution
|
18-bit |
Measurement Resolution
|
24-bit |
Accuracy
Programming and Measurement |
± 0.04% of full scale; voltage control ± 0.04% of full scale; current control |
| Specification | Value |
|---|---|
AC Input
1Φ, 2-wire + ground |
IEC 60320 connector |
AC Input
3Φ, 3-wire + ground |
Molex 38660 connector |
DC Input
|
Bus bars with 3/8" threaded insert; 250 Adc max |
DC Output
|
Bus bars with 3/8" threaded insert; 250 Adc max |
Communication Interfaces
Standard |
USB Host (Front): Type B USB Host (Rear): Type B RS485 (Rear): RJ-45 External User I/O: 15-pin D-Sub, female |
Communication Interfaces
Optional |
LXI TCP/IP Ethernet (Rear): RJ-45 |
| Specification | Value |
|---|---|
Size and Weight
Configuration A, Configuration B |
1U 1.75” H x 19” W x 24” D (4.4 x 48.3 x 61.0 cm) 35 lbs (15.88 kg) |
Size and Weight
Configuration C |
1U (See Above) + External Transducer External transducer size and weight will vary depending on current rating |
| Specification | Value |
|---|---|
Ambient Operating Temperature
|
0°C to 50°C |
Storage Temperature
|
-25°C to +85°C |
Humidity
|
Relative humidity 30% to 90%, non-condensing |
Air Flow
|
Side intake, rear exhaust |
EMC
|
Complies with 2014/30/EU (EMC Directive) CISPR 22 / EN 55022 Class A |
| Specification | Value |
|---|---|
CE Mark
|
Yes |
RoHS Compliant
|
Yes |
Downloads
The following downloads are for the Add-On - Accessory - DBx Module: