| Development Boards, Kits, Programmers | 1 | Active | The EVL012LED is an LED driver board. This architecture is based on a two-stage approach: a front-end PFC preregulator and a downstream resonant half-bridge converter, using the new STNRG012 IC that embeds the controllers of both sections in the same device. Thanks to the STNRG012, the main features of this design are high efficiency, low power consumption at no load without an auxiliary supply, good power factor with low harmonic content, and reduced part count. The board also has a full set of protection features including output overload, short-circuit, and overvoltage; all of which can be easily defined as latched or auto-restart, simply changing a value in the non-volatile memory of the controller. |
| LED Driver Evaluation Boards | 1 | Active | The EVL150W-HVSL is an evaluation board of a150 W / 1 A LED driver with wide input mainsrange. The electrical specification is tailored on a typical high-power street lighting application.
It is based on a two-stage architecture, consisting of a front-end PFC pre-regulator and a downstream half-bridge resonant tank converter. The pre-regulator is a transition mode PFC based on constant ON time control, while the resonant converter is an LCC tank that is more suitable than LLC tank to build a current source.
Both stages are based on the new STCMB1 combo controller that integrates, in the same device, a transition mode PFC controller and a half-bridge resonant controller.
Thanks to the STCMB1, the main features of this design are high efficiency, no-load input power consumption is very low, reduced harmonics compliant with the EN61000-3-2 Class-C, and EMI within the relevant EN55022 limits.
Another noticeable feature of this LED driver is the extremely wide dimming capability, actually the board can regulate the current from maximum level down to less than 10% with analog dimming and to 1% in PWM dimming. The PWM dimming is perfectly flicker free, because even in the case of very low current, it is kept continuous (DC) in the LED and thus independent of the frequency of the PWM dimming signal.
The board also has protection features in case of overload, short-circuit, open loop by each section. For this particular application, all protections in case of intervention have an auto-restart functionality. |
EVL40012 V - 400 W adapter based on L4984, L6699 and SRK2001 | Development Boards, Kits, Programmers | 1 | Active | The EVL400W-EUPL7 demonstration board is a 12 V - 400 W converter, tailored for the typical specification of an AC/DC adapter with wide input mains range, very low power consumption at light load and good average efficiency.
The architecture is based on a two-stage approach: a front-end PFC pre-regulator based on a CCM (continuous conduction mode) boost PFC controller using the L4984, and a downstream LLC resonant half-bridge converter, designed around the L6699.
At the secondary side, synchronous rectification is implemented by means of the SRK2001 that assures a very high rectification efficiency with consequent small Heat Sink required.
The PFC section uses a proprietary LM-FOT (line-modulated fixed-off-time) that allows control methodology at fixed frequency operation for boost PFC converters as long as its operating in CCM.
The LLC section uses the L6699, a double-ended controller specific to series-resonant half-bridge topology. The output voltage regulation is obtained by modulating the operating frequency.
The main focus of this demonstration board is the light-load efficiency, achieved through the burst mode function of both PFC and LLC controllers with the self-adaptive deadtime of the L6699, modulated by the internal logic according to the half-bridge node transition times, which allows the maximization of the transformer magnetizing inductance, reducing the primary current at light load operation.
An active high voltage start-up circuitry based on a depletion MOSFET provides a very fast start-up time and minimizes the residual consumption during normal operation to a negligible level. |
EVL400W-80PL12 V - 400 W adapter based on L4985A, L6699 and SRK2001 | DC/DC & AC/DC (Off-Line) SMPS Evaluation Boards | 1 | Active | The EVL400W-80PL demonstration board is a 12 V - 400 W converter, tailored to the typical specifications of an AC/DC adapter with wide input mains range, very low power consumption at light load and good average efficiency.
It is composed by a motherboard mounting the high voltage power devices, the primary control board mounting the IC controllers L4985A and L6699 and the secondary control board for the synchronous rectification.
The architecture is based on a two-stage approach: a front-end PFC pre-regulator based on a CCM (Continuous Conduction Mode) boost PFC controller using the L4985A, and a downstream LLC resonant half-bridge converter, designed around the L6699.
At the secondary side, synchronous rectification is implemented by means of the SRK2001 that assures a very high rectification efficiency with a reduction in the size of the heatsink required.
The PFC section uses the L4985A, a peak current-mode PFC controller for boost converter with a proprietary multiplier "emulator" which, in addition to the innovative THD optimizers, guarantees very low Total Harmonic Distortion (THD) performance in all operating conditions.
The device operates in quasi-fixed frequency in all operating conditions thanks to a proprietary off-time modulator and includes the high voltage startup block with the circuitry to discharge the X-capacitors of the EMI filter.
This level of integration allows a low-component count solution for boost PFC pre-regulators.
The LLC section uses the L6699, a double-ended controller specific to series-resonant half-bridge topology. The output voltage regulation is obtained by modulating the operating frequency.
The main focus of this demonstration board is the light-load efficiency, achieved through the burst mode function of both PFC and LLC controllers with the self-adaptive deadtime of the L6699, modulated by the internal logic according to the half-bridge node transition times, which allows the maximization of the transformer magnetizing inductance, reducing the primary current at light load operation. |
EVL4986-350WLow-THD 350W CCM-PFC pre-regulator based on L4986 | Evaluation and Demonstration Boards and Kits | 1 | Active | The EVL4986-350W evaluation board, based on the new L4986 continuous conduction mode power factor controller, implements a 350 W wide-range input PFC pre-regulator.
It is suitable for all SMPS from 150 W to several kW and is compliant with IEC61000-3-2 and JEITA-MITI standards.
Thanks to the embedded 800 V high voltage start-up circuitry (that includes also the X-capacitor discharger) and the new patented control method; the main features of this design are the minimal component counts, the simple and easy design and very low input current distortion (THD) in all operating conditions.
Power Good output signal PG_OUT with adjustable comparator input PG_IN for monitoring the PFC output voltage provides design flexibility. |
EVL4986A-1KWBLLow THD-High Efficiency, 1KW Bridgeless CCM-PFC pre-regulator based on L4986A | Evaluation Boards | 1 | Active | The EVL4986A-1KWBL demonstration board is a bridgeless PFC pre-regulator, double boost topology, featuring 1 kW output power (400 Vdc) and wide input voltage range (90 Vac-265 Vac), based on the new L4986A peak current mode CCM power factor controller.
It is intended as a front-end converter up to 1 kW, able to be compliant with IEC61000-3-2 and JEITA-MITI.
The demo is designed on the double boost (Barbi) topology using two branches, each consisting of a boost stage, managing half mains cycle. Each section operates at almost fixed frequency (65 kHz).
Thanks to the bridgeless approach and the L4986A control IC, the board offers high efficiency and low input current THD across the entire input voltage range. This is achieved using a low complexity schematic and fewer components compared to similar bridgeless solutions. |
EVL6206-PLUGEvaluation kit environment for L62xx family of dual brush DC and stepper motor drivers based on STM32 Nucleo | Evaluation and Demonstration Boards and Kits | 1 | Active | The EVL62XX-MAIN is an expansion board that can host small EVL62XX-PLUG plug-in boards for quick and easy evaluation of brush DC and stepper motor drivers of the L62xx family.
These boards provide an affordable and easy-to-use solution to drive dual brush DC and bipolar stepper motors in association with the evaluation software STSPIN Studio.
The EVL62XX-MAIN is compatible with the Arduino UNO R3 connector. |
EVL6207-PLUGEvaluation kit environment for L62xx family of dual brush DC and stepper motor drivers based on STM32 Nucleo | Evaluation and Demonstration Boards and Kits | 1 | Active | The EVL62XX-MAIN is an expansion board that can host small EVL62XX-PLUG plug-in boards for quick and easy evaluation of brush DC and stepper motor drivers of the L62xx family.
These boards provide an affordable and easy-to-use solution to drive dual brush DC and bipolar stepper motors in association with the evaluation software STSPIN Studio.
The EVL62XX-MAIN is compatible with the Arduino UNO R3 connector. |
EVL6208-PLUGEvaluation kit environment for L62xx family of dual brush DC and stepper motor drivers based on STM32 Nucleo | Evaluation and Demonstration Boards and Kits | 1 | Active | The EVL62XX-MAIN is an expansion board that can host small EVL62XX-PLUG plug-in boards for quick and easy evaluation of brush DC and stepper motor drivers of the L62xx family.
These boards provide an affordable and easy-to-use solution to drive dual brush DC and bipolar stepper motors in association with the evaluation software STSPIN Studio.
The EVL62XX-MAIN is compatible with the Arduino UNO R3 connector. |
EVL6226-PLUGEvaluation kit environment for L62xx family of dual brush DC and stepper motor drivers based on STM32 Nucleo | Evaluation and Demonstration Boards and Kits | 1 | Active | The EVL62XX-MAIN is an expansion board that can host small EVL62XX-PLUG plug-in boards for quick and easy evaluation of brush DC and stepper motor drivers of the L62xx family.
These boards provide an affordable and easy-to-use solution to drive dual brush DC and bipolar stepper motors in association with the evaluation software STSPIN Studio.
The EVL62XX-MAIN is compatible with the Arduino UNO R3 connector. |
