The STMicroelectronics A7987 automotive switching regulator has a wide input voltage range that allows use in trucks and buses, and an adjustable output voltage that ensures flexibility and stable performance to power the numerous voltage rails in automotive applications such as body infotainment and telematics.
With maximum input voltage of 61 V, the A7987 can operate from a 24 V battery in a conventional or hybrid/electric vehicle and maintain a regulated output despite disturbances such as load-dump. The output is adjustable from 0,8 V up to the input voltage, with low dropout, and can provide up to 3 A for a wide variety of loads from logic to lighting.
The current limit and switching frequency up to 1,5 MHz are set with external pull-down resistors, letting designers create compact power modules by optimising the output inductor size. Pulse-by-pulse current sensing with digital frequency foldback in short-circuit minimises stress on power components to enhance reliability. Thermal protection is built-in, with shutdown and auto-recovery to minimise reliance on external intervention.
The A7987 embeds a low-resistance N-channel power MOSFET. At light load, pulse skipping maintains output regulation and a bias-voltage input with integrated switchover allows powering analog circuitry from an external source for optimum efficiency.
A synchronisation pin allows up to five regulators to coexist by switching out of phase to avoid noise effects and reduce the RMS current flowing in the input capacitor. An enable pin and a power-good indicator with adjustable delay permit power-up sequencing. There is also an adjustable soft-start function to limit inrush current.
AEC-Q100 certified, the A7987 switching regulator is in production now, in a 5 x 6,4 mm HTSSOP16 exposed-pad package. ST has also released the STEVAL-ISA207V1 evaluation board, to accelerate new projects leveraging the A7987.
6U VPX power supply 23 October 2019, Conical Technologies
, Power Electronics / Power Management
SynQor announced its new universal 85 to 264 Vrms AC-input VPX power supply for critical military, aerospace and shipboard applications. This 6U VPX power supply, designed to meet VITA 46 standards, allows ...
Read more...Automotive H-bridge driver 23 October 2019, Altron Arrow
, Power Electronics / Power Management
The TLE985x H-bridge MOSFET driver IC product family from Infineon Technologies is an ideal fit for compact and cost-effective motor control solutions. It targets automotive applications such as sunroof, ...
Read more...Half-bridge driver ICs 25 November 2019, Altron Arrow
, Power Electronics / Power Management
The TLE92108 is a family of multi-MOSFET driver ICs introduced by Infineon Technologies, designed to control up to eight half-bridges (up to 16 n-channel MOSFETs) with one packaged device. A 24-bit serial ...
Read more...Tiny buck-boost converters 25 November 2019, Avnet South Africa
, Power Electronics / Power Management
Texas Instruments introduced a family of four high-efficiency, low-quiescent-current (IQ) buck-boost converters that feature tiny packaging with minimal external components for a small solution size. ...
Read more...NXP further expands LPC5500 MCU family 25 November 2019, EBV Electrolink
, DSP, Micros & Memory
NXP Semiconductors announced the availability of its LPC552x/S2x microcontroller (MCU) family, further extending its efficient LPC5500 MCU series with the second of seven families planned for the series. ...
Read more...Raspberry Pi power management and UPS HAT 25 November 2019, iCorp Technologies
, Power Electronics / Power Management
This Raspberry Pi power management and UPS HAT, made by Sixfab, ensures that the device is powered up and that the user has full control over its power supply. The uninterruptible power supply automatically ...
Read more...Fully integrated power management IC 25 November 2019, EBV Electrolink
, Power Electronics / Power Management
With features including four DC-DC buck converters, a boost DC-DC converter, and six low-dropout regulators (LDOs), the STMicroelectronics STPMIC1 power management IC (PMIC) satisfies the complex power ...
Read more...STM8 development boards in Nucleo-32 format 25 November 2019, EBV Electrolink
, Design Automation
STMicroelectronics is making design starts using 8-bit STM8 microcontrollers (MCUs) faster, more affordable, and more accessible by introducing new development boards in the Nucleo-32 form factor.
The ...
Read more...Military field-grade AC changer 25 November 2019, Conical Technologies
, Power Electronics / Power Management
SynQor’s new MAC-4000 is a compact, military field-grade 3-phase to single-phase AC changer. This 4 kW/5 kVA phase/frequency AC changer is designed for the extreme environmental and demanding electrical ...
Read more...Synchronous step-down regulator 25 November 2019, Altron Arrow
, Power Electronics / Power Management
STmicroelectronics’ L6983 is an easy-to-use, synchronous monolithic step-down regulator capable of delivering up to 3 A d.c. to the load. The wide input voltage range makes the device suitable for a broad ...
printer friendly version