Point of Sale (POS) terminals in wide use today have an array of power management requirements from display backlighting, function indicator lamps and power port protection to load switching, and buck and boost converters. These products typically operate from line driven AC/DC adaptor supplies with voltage rails that need power distribution control and regulation at the point of load.


Buck and Boost Converters

POS terminal AC/DC power adaptor supplies do not always provide specific voltage rails needed by application circuits. Buck/boost converters regulate to allow the adaptor-supplied voltage rail to be stepped up or down at the point of load for specific application circuits.

  • Point of load voltage regulators provide a local supply rail with high efficiency
  • Single output high efficiency DC/DC switching regulators can provide either a step-up or step-down voltage output.
Part Number Description
KTB851 600mA Step-down Converter with Output Load Discharge
KTB851-1 600mA Step-down Converter
KTC218 Wide Output Range Step-Up Converter
KTC2110 3.0Mhz High Efficiency, Low IQ Synchronous Boost Converter

EMI/ESD Suppression

Kinetic Technologies’ EMI/ESD Suppression technology is the industry’s first and is used to improve EMC performance in Ethernet applications. What used to present as a design challenge is solved by this unique solution that offers EMC compliance for Ethernet connected devices. The physical interface of the PD data path to the outside environment is through the PHY. The PHY is also subject to ESD and surge events when an Ethernet cable is inserted. CM emissions are typically filtered by large passive devices located between the PHY and the LAN isolation magnetics. Kinetic Technologies offers the world’s first active ESD and EMI suppressor IC, a 4-channel device in which each channel connects to one wire of the two twisted pair sets. ESD performance, EFT-B and surge immunity, and CM emissions equal or exceed passive techniques while occupying a much smaller footprint.

The Kinetic Technologies EMI/ESD Suppression technology enables system designers to comply with:

  • CISPR22 and FCC Part 15, Class B requirements for Radiated and Conducted Emissions.
  • IEC 61000-4-3/6 requirements for Radiated and Conducted Immunity, Level 3 or higher.
  • IEC 61000-4-2 ESD (Air Discharge) of ±25kV.
  • IEC 61000-4-2 ESD (Contact Discharge) of ±12kV.
  • Cable Discharge Event (CDE) of ±12kV.
Part Number Description
KTA1550 Dual-channel Active choke for EMI suppression w/ Integrated ESD Protection
KTA1552 Quad Channel Active EMI & ESD Suppressor for Ethernet Applications

GPIO

Part Number Description
KTS1622 Low Voltage 16-Bit I2C-bus I/O Expander

LCD Backlight LED Drivers

POS terminals often have large displays that require LED backlighting. White LEDs are used for color LCD displays and lower cost terminals use monochrome displays with either white or other fixed color LEDs. Backlight LED strings are configured in series or series/parallel configurations that often require the supply voltage to be boosted from the power supply source. Multiple current sink drivers connect to long serial strings of WLEDs and therefore require a compliance voltage significantly higher than the battery voltage.

  • Panel size and resolution determine the number of white LEDs (WLED) required to produce the necessary screen brightness
  • Dimming techniques to control the brightness can range from simple linear LED brightness control to sophisticated high efficiency PWM control to achieve contrast ratios of typically 20,000:1
  • High accuracy current sinks to provide uniform backlight across larger panel sizes
  • High efficiency boost power conversion required to minimize demands on battery power consumption and maximize the battery life between charge cycles

Product Highlights:

  • Multiple series/parallel strings of WLED drivers to match the display panel needs
  • Multiple programming options from simple PWM signal control to full-featured I2C interfaces.
  • Advanced design, low drop-out current sinks with tight linearity characteristics to maintain constant LED current accuracy over all battery voltage extremes
  • High efficiency boost converters with integrated protection against LED open and short-circuit conditions
Part Number Description
KTD104 Linear-mode 4-Channel LED Driver
KTD105 Linear-mode 5-Channel LED Driver
KTD108 Linear-mode 4-Channel LED Driver
KTD109 Linear-mode 5-Channel LED Driver
KTD117 Linear-mode 4+2 -Channel LED Driver
KTD251 Step-Up LED Driver with PWM Control
KTD2531 Step-Up LED Driver with PWM Control
KTD2536 Step-Up LED Driver with PWM Control
KTD2500 Step-Up LED Driver with ExpressWire or PWM Control
KTD2505R Step-Up LED Driver with ExpressWire or PWM Control
KTD2511C Step-Up LED Driver with PWM Control
KTD2511D Step-Up LED Driver with PWM Control
KTD2801 Step-Up LED Driver with Internal Diode and ExpressWire/PWM Dimming
KTD2801A Step-Up LED Driver with Internal Diode and ExpressWire/PWM Dimming
KTD2801B Step-Up LED Driver with Internal Diode and ExpressWire/PWM Dimming
KTD314 High Efficiency, Wide Voltage Range 20-LED Driver
KTD315 High Efficiency, Wide Voltage Range 30-LED Driver
KTD3112 High Efficiency Step-Up 2-Ch LED Driver, 25V OVP
KTD3113 High Efficiency Step-Up 3-Ch LED Driver, 25V OVP
KTD3116-1 High Efficiency Step-Up 2-Ch LED Driver, 31V OVP
KTD3117-1 High Efficiency Step-Up 3-Ch LED Driver, 31V OVP
KTD3118 High Efficiency Step-Up 2-Ch LED Driver, 42V OVP
KTD3119 High Efficiency Step-Up 3-Ch LED Driver, 42V OVP
KTD3122 2-Ch Step-Up LED Driver with Integrated Power Diode
KTD3137 High Efficiency 3-Channel LED Backlight with Panel Flash Function
KTD3156 6-Ch Step-Up LED Driver with PWM-Control Mixed-Mode Dimming
KTD3156B 6-Ch Step-Up LED Driver with PWM-Control Mixed-Mode Dimming, low duty dimming
KTD325 High Efficiency, Wide Voltage Range 30-LED RGB Driver
KTZ8864 High Efficiency 4-CH LED Backlight Driver with Dual LCD Bias Power

Overvoltage and Surge Protection ICs

POS terminals have input power ports that are subject to voltage surge conditions that can potentially damage the device. POS terminal also need internal voltage rail switching to reduce standby power consumption or to enable/disable specific function circuits while the device is operating. Input power port protection is desirable to guard against unreliable power sources.

  • Over-voltage, and surge protected load switches protect battery charge management and operating handset circuits, by breaking the connection between the power source and the internal circuitry, in the event the device is connected to a faulty power source or subjected to an abnormal stress condition.

Product Highlights:

  • Programmable and fixed over-voltage protection (OVP) shutdown thresholds.
  • Input protection
    • Wrong adapter up to +40V
    • Reverse voltage down to -6V
    • Transient voltage protection up to 200V, compliant to IEC61000-4-2 (Level 4)
    • ESD protection compliant to ±8kV contact, ±15kV air gap and ±2kV human body model.
  • Single or dual devices with Uni or Bi-directional blocking

Integrated load switches provide internal power switching and are controlled by simple GPIO logic.

  • Eliminate the need for bias and level shift circuits associated with discrete MOSFET switches
  • Provides slew-rate limited turn-on with reverse current blocking and output discharge mode to de-select functions when not required to extend battery life.

Product Highlights:

  • Extremely low IN to OUT resistance
  • Tiny footprint
  • Operation down to 1.8V
Part Number Description
KTS1601 SRC P-Ch Load Switch with Reverse Blocking
KTS1601-1 SRC P-Ch Load Switch with Reverse Blocking and Output Discharge
KTS1605 SRC P-Ch Load Switch with Reverse Blocking
KTS1605-1 SRC P-Ch Load Switch with Reverse Blocking and Output Discharge
KTS1612 Dual-Input Push Button Reset IC with Two Discharge Paths
KTS1613 Dual-Input Push Button Reset IC
KTS1650B 4.5 Amp Overvoltage Protection IC with Surge Protection
KTS1656 Surge Protected, Single Input, Dual Output Load Switch Protection with OVP
KTS1662 Adjustable Overvoltage Protection Switch
KTS1668 100V Surge Protected OVP Switch, with sense output
KTS1670 Load Switch with adjustable OVP
KTS1671 Load Switch with fixed and adjustable OVP
KTS1674 OVP Switch with Reverse Blocking and 100V surge Protection
KTS1676 Over-voltage Protector with Bidirectional Blocking and Surge Protection
KTS1677A Low RON Load Switch with Overvoltage and Reverse Blocking Protection
KTS1678B OVP Switch with Single Input, Dual Output Switches with Surge Protection and Individual Enables
KTS1679-1 OVP Switch with Single Input, Dual Output Switches with 10V Surge Protection, Individual Enables, Selectable OVP & BAT SNS pin
KTS1680 100V Surge Protected OVP Switch
KTS1680C 100V Surge Protected OVP Switch
KTS1680A 100V Surge Protected OVP Switch
KTS1681 Ultra-Fast 100V Surge Protected OVP Switch, with VDET output and MIC function
KTS1681A 4 Amp Overvoltage Protection IC with Sense Output
KTS1682 Ultra-Fast 100V Surge Protected OVP Switch, with VDET output and MIC function
KTS1685 OVP Switch with 100V Surge Protection
KTS1686 Ultra-Fast 100V Surge Protected OVP Switch, with Bidirectional Blocking
KTS1688 OVP Switch with Reverse Blocking and Current Limiting
KTS1689A 100V Surge Protected OVP Switch
KTS1693 110V Surge Protected OVP Load Switch with OCP

PoE PD Controllers

Applications requiring PoE typically need high efficiency power conversion, small PCB area and reduced component count. Kinetic Technologies offers a product solution which integrate the PD physical interface and DC/DC controller functions into a single package. Supporting solutions from a few watts up to the maximum allowed, Kinetic Technologies provides a high efficiency power solution for nearly every PoE PD application.

The KTA1137A targets both Type 1 and Type 2 PDs. It is a highly integrated CMOS solution for PoE PDs requiring input power up to 30 watts. The KTA1137A integrates input Surge Protection, a digital PD controller, and a low-emission DC/DC controller onto a single die. The KTA1137A implements the physical layer PD functionality as required by IEEE® 802.3af and IEEE® 802.3at. This includes 2-event classification, a Type 2 PSE detection indicator (ATDET) in addition to PD detection, under-voltage lockout, and hot-swap FET integration.

Part Number Description
KTA1137A 13W/30W 802.3af/at PoE PD and Integrated DC-DC Controller

RGB LED Drivers

POS terminals use multicolor RGB LEDs for function indicator lamps. Indicator lamps show power on or function status. Implementing indicator lamp LED control circuits to interface LED control switching to microcontroller logic is a tedious process that requires multiple discrete components.

RGB LED drivers allow simplified programmable control of LED color and brightness

Product Highlights:

  • 3-channel RGB LED drivers permit custom color control
  • 4-channel RGBW devices allow for driving a white LED in addition to the RGB LED
  • Multiple programming options include I2C or ExpressWire to ease integration with a wide variety of processors and operating systems
  • Wide range of ramp up/down timing for slow fade in/out effects and complex repeating patterns
  • Ultra-small package footprint
Part Number Description
KTD2021 3-Channel RGB LED Driver with ExpressWire Control
KTD2022 3-Channel RGB LED Driver with ExpressWire Control
KTD2023 4-Channel RGBW LED Driver with ExpressWire Control
KTD2026 3-Channel RGB LED Driver with I2C Control
KTD2027 4-Channel RGBW LED Driver with I2C Control
KTD2037 3-Channel RGB LED Driver with I2C Control, AutoBlinQ™
KTZ8807 3-Channel RGB LED Driver + 1-Channels Selfie Flash with I2C Control, AutoBlinQTM

USB Data Line Protection ICs

Part Number Description
KTU1000 USB Hi-Speed Switch with Fault Protection
KTU1001 USB D+/D- Hi-Speed or SBU1/2 Switch with Fault Protection
KTU1001A USB D+/D- Hi-Speed or SBU1/2 Switch with Fault Protection
KTU1001B USB D+/D- Hi-Speed or SBU1/2 Switch with Fault Protection
KTU1101 USB Type-C Port Protector for CC and SBU Pins
KTU1108 USB Type-C Protector for CC Pins