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 |
| KTB8371 | 4.7V to 17V Input, 5A Synchronous Buck Regulator with I2C Interface |
| KTB8372 | 4.7V to 18V Input, 5A Synchronous Buck Regulators with AOT Control |
| KTB851 | 600mA Step-down Converter with Output Load Discharge |
| KTC2110 | 3.0Mhz High Efficiency, Low IQ Synchronous Boost Converter |
| KTC2110A | 3.0MHz High Efficiency Low IQ Synchronous Boost |
| KTZ8701 | 6-Channel PMIC with 2 Buck Converters and 4 LDOs |
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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| KTS1663 | Load Switch with fixed and adjustable OVP |
| KTS1668 | 100V Surge Protected OVP Switch, with sense output |
| KTS1670 | Load Switch with adjustable OVP |
| KTS1671 | Load Switch with fixed and adjustable OVP |
| KTS1675 | Overvoltage Protector with Bidirectional Blocking and Surge Protection |
| KTS1675A | Overvoltage Protector with Bidirectional Blocking and 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 |
| KTS1686 | Ultra-Fast 100V Surge Protected OVP Switch, with Bidirectional Blocking |
| KTS1688 | OVP Switch with Reverse Blocking and Current Limiting |
| KTS1690A | USB VBUS ISOURCE Load Switch with Current Limit Control |
| 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 |
| KTA1140 | IEEE 802.3bt-Compliant, Powered Device Interface 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
- I2C 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 |
| 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™ |
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 |
| KTU1101 | USB Type-C Port Protector for CC and SBU Pins |
| KTU1108 | USB Type-C Protector for CC Pins |
| KTU1120 | USB Type-C Port Protector for CC and SBU Pins |
| KTU1121A | USB Type-C Port Protector for CC and SBU Pins |
| KTU1121 | USB Type-C Port Protector for CC and SBU Pins |