STMicroelectronics

The STEVAL-IPP003V1 evaluation board is a PLM communication module that can be used for a large set of applications, including metering, building automation and street lighting. The module is optimized to operate in CENELEC bands, but can also work in FCC and ARIP bands up to 250 kHz with a few modifications. The module is based on the STM32F103RFT6 ARM Cortex-M3 microcontroller and the ST7580 xPSK narrow band power line modem with up to 28.8 kbps data rate. The MCU mounted on the board can be easily replaced with an equivalent 64-pin MCU from the STM32F2 or STM32F4 family by a few modification in the assembly. The module can be coupled to both AC and DC power line buses and also includes a USB interface for optional PC connection.

The STEVAL-IPT005V1 product evaluation board is designed both for standalone operation or to be controlled by the microcontroller. The board is fully configurable, provides access to all signals including supply voltage through labeled test points, and uses a standard connector for simple communication interfacing with the microcontroller block. The labeled test points on the board are in the same order as the signals in the flat interface cable. The board provides easy and flexible card supply voltage (VCC) selection, either through the onboard configuration switch (driving the tri-state VCCselection input pin VCC_SEL) or through the microcontroller. The STEVAL-IPT005V1 product evaluation board addresses market segments including: POS, set-top boxes, pay TV, identification, banking and tachographs.

The ST8034xx interface devices are placed between the smartcard and the microcontroller to provide all supply, protection, detection and control functions, with a minimum of external components. The STEVAL-IPT006V1 product evaluation board allows easy demonstration and testing of these features. The board can also be used as a functional block for a complete application, as it is designed both for standalone operation or to be controlled by the microcontroller. The board is fully configurable to maintain flexibility for various use scenarios. It includes standard interfaces on both sides (smartcard connector, MCU interface connector) and easily accessed, labeled testpoints on all signals. The STEVAL-IPT006V1 product evaluation board addresses market segments including: POS, set-top boxes, pay TV, identification, banking and tachographs.

The ST8034xx interface devices are placed between the smartcard and the microcontroller to provide all necessary supply, protection, detection and control functions, while requiring a minimum of external components. The STEVAL-IPT007V1 product evaluation board allows easy demonstration and testing of the ST8034HC 24-pin smartcard interface features. The board can also be used as a functional block for a complete application, as it is designed both for standalone operation or to be controlled by the microcontroller. The board is fully configurable to maintain flexibility for various use scenarios. It includes standard interfaces on both sides (smartcard connector, MCU interface connector) and easily accessed, labeled test-points on all signals. The STEVAL-IPT007V1 product evaluation board addresses market segments including POS, set-top boxes, pay TV, identification, banking and tachograph.

This demonstration board based on VIPER16 is designed as an example of a simple non-isolated auxiliary power supply for a range of input voltages from 85 VAC to 500 VAC. There is an ever-increasing demand for small power supplies capable of working without voltage range limitations, even at nominal levels of 400 VAC and 415 VAC, respectively. The real voltage level can reach 500 VAC (415 V + 20%). The major markets for this type of SMPS are home appliances and metering. The VIPER16 device includes an 800 V rugged power switch, a PWM controller, programmable overcurrent, overvoltage, overload, a hysteretic thermal protection, soft-start and safe auto-restart after any fault condition removal. Burst mode operation at light load combined with the very low consumption of the device helps to meet standby energy-saving regulations. The significant benefit of this new chip derives from the jitter of the switching frequency and the possibility to supply the chip directly from the DC HV bus, so auxiliary supply is not mandatory. The VIPER16 is suitable for flyback or buck topologies and thanks to an internal self-supply circuit it does not require an auxiliary supply.

The STEVAL-ISA044V6 demonstration board is based on the ST1S10 device assembled in a DFN package. The ST1S10 is a step-down DC-DC converter with the inhibit function optimized for powering high voltages in LCD applications and low voltages in digital-core HDD applications. It replaces the high-current linear solution when high power dissipation is an issue. It provides up to 3 A over an input voltage range of 2.5 V to 18.0 V, and synchronous rectification removes the need for an external Schottky diode. A high internal switching frequency (900 kHz) allows for the use of tiny surface-mount components, as well as a resistor divider to set the output voltage value. Only an inductor and 3 capacitors are required. The current-mode PWM architecture and stable operation with low-ESR SMD ceramic capacitors result in low output ripple. To maximize power conversion efficiency in light load, the regulator can work in burst mode automatically. The device can operate in PWM mode with a fixed frequency or synchronized to an external frequency. It switches at a frequency of 900 kHz when the SYNC pin is connected to ground or a fixed voltage (less than 5.5 V), and can synchronize the switching frequency between 400 kHz to 1.2 MHz from an external clock applied to the SYNC pin. A thermal shutdown circuit is integrated and activates at 150 °C. Cycle-by-cycle current limitation provides protection against shorted outputs. The quiescent current is less than 6 μA in the inhibit state.

This demonstration board is based on the new VIPer17H device, that is a converter that offers in one package a PWM controller built in BCD6 technology and a 800 V avalanche rugged vertical power section. The VIPer17H switches at 115 kHz and can deliver 6 W from wide range operation from 85 Vac to 305 Vac. It can also deliver 10 W when operating from European range of 175 Vac to 264 Vac. This demonstration board has additional features asked by many customers: Standby wattage as low as 50 mW at no load. Frequency jittering is implemented to make EMI measurement meet today's standards. Adjustable overload. Output short-circuit protection for hard short such as transformer saturation or shorted diode. Adjustable brown out and brown in feature. Output over voltage protection. The same PCB board has been designed in such a way that can be populated for either the double or even single output. The only difference between them is the extra output parts, the transformer, and the voltage divider for the feedback loop.

The STEVAL-ISA063V2 demonstration board implements a typical buck-boost DC-DC converter based on STMicroelectronics’ STBB1-APUR high efficiency single inductor dual mode buck-boost DC-DC converter. The device is fixed frequency and capable of providing output voltages ranging from 1.2 V to 5.5 V and input voltages from 2.0 V to 5.5 V. The STBB1-APUR can operate with input voltages higher than, equal to, or lower than the output voltage, rendering the product suitable for single lithium-ion (Li-Ion), multicell alkaline or NiMH applications where the output voltage is within the battery voltage range. The integrated low-RDSonN-channel and P-channel MOSFET switches contribute to its high efficiency.

The STEVAL-ISA069V1 demonstration board is based on the ST1S31, which is an internally compensated 1.5 MHz fixed-frequency PWM synchronous step-down regulator. This device operates from 2.8 V to 5.5 V input, while it regulates an output voltage as low as 0.8 V and up to Vin. The peak current mode control with internal compensation delivers a very compact solution with a minimum component count.