intersil Manuals

ISL6112 Dual Slot PCI-Express Power Controller

The ISL6142/52 are 14-pin, negative voltage hot plug controllers that allow a board to be safely inserted and removed from a live backplane. Inrush current is limited to a programmable value by controlling the gate voltage of an external N-channel pass transistor. If the input voltage is less than the Under-Voltage threshold or greater than the Over-Voltage threshold, the pass transistor is turned off. The PWRGD/PWRGD outputs can be used to directly enable a power module. When the Gate and DRAIN voltages are both considered good, the output is latched in the active state. The IntelliTripTM electronic circuit breaker and programmable current limit features protect the system against short circuits. When the Over-Current threshold is exceeded, the output current is limited for a time-out period before the circuit breaker trips and shuts down the FET. The time-out period is programmable with an external capacitor connected to the CT pin. If the fault disappears before the programmed time-out, normal operation resumes. In addition, the IntelliTripTM electronic circuit breaker has a fast Hard Switch feature that can instantly turn off the FET when the current reaches the Over-Current threshold.

ISL6140, ISL6150 are negative voltage hot plug controllers produced by Intersil company. The controller allows the circuit board to be safely inserted and removed from a live backplane. By controlling the gate voltage of an external N-channel pass transistor, the inrush current is limited to a programmable value. If the input voltage is less than the undervoltage threshold or greater than the overvoltage threshold, the pass transistor will be turned off. A programmable electronic circuit breaker protects the system against shorts. The PWRGD signal of ISL6140 is low-level and the PWRGD signal of ISL6150 is high-level.

ISL6173 Dual Low Voltage Hot Swap Controller is a dual voltage hot swap controller that targets dual voltage hot swap applications across the +2.5V to +3.3V (nominal) bias supply voltage range with a second lower voltage rail down to less than 1V. It features a charge pump for driving external N-Channel MOSFETs, regulated current protection and duration, output undervoltage monitoring and reporting, optional latch-off or retry response, and adjustable soft-start. The current regulation level (CR) for each rail is set by two external resistors and each CR duration is set by an external capacitor on the TIM pin. After the CR duration has expired, the IC then quickly pulls down the associated GATE(s) output turning off its external FET(s). The ISL6173 offers a latched output or indefinite auto retry mode of operation.

The ISL6161 is a HOT SWAP dual supply power distribution controller that can be used in PCI-Express applications. Two external N-Channel MOSFETs are driven to distribute and control power while providing load fault isolation. At turn-on, the gate of each external N-Channel MOSFET is charged with a 10µA current source. Capacitors on each gate (see the Typical Application Diagram), create a programmable ramp (soft turn-on) to control inrush currents. A built-in charge pump supplies the gate drive for the 12V supply N-Channel MOSFET switch. Over current protection is facilitated by two external current sense resistors and FETs. When the current through either resistor exceeds the user programmed value the controller enters the current regulation mode. The time-out capacitor, CTIM, starts charging as the controller enters the time out period. Once CTIM charges to a 2V threshold, both the N-Channel MOSFETs are latched off. In the event of a hard and fast fault of at least three times the programmed current limit level, t

The HIP1020 is a single, double, or triple-output hot plug controller that applies a linear voltage ramp to the gates of 3.3V, 5V, and 12V MOSFETs. The internal charge pump doubles a 12V bias or triples a 5V bias to provide the high-side drive capability required when using more cost-effective N-Channel MOSFETs. The internally-controlled rise time meets Device-Bay specifications. If a slower rate is required, it can be overridden using an optional external capacitor. When VCC = 12V, the charge pump ramps the voltage on HGATE from zero to 22V in about 4ms. This allows either a standard or a logic-level MOSFET to become fully enhanced when used as a high-side switch for 12V power control. The voltage on LGATE ramps from zero to 16V, allowing the simultaneous control of 3.3V and/or 5V MOSFETs. When VCC = 5V, the charge pump enters voltage-tripler mode. The voltage on HGATE ramps from zero to 12.5V in about 3ms, while LGATE ramps to 12.0V. This mode is ideal for control of high-side MOSFET switches used in 3.3V and 5V power switching when 12V bias is not available.

The HIP1013 is a low cost HOT SWAP dual supply power distribution controller. Two external N-Channel MOSFETs are driven to distribute power while providing load fault isolation. At turn-on, the gate of each external N-Channel MOSFET is charged with a 10µA current source. Capacitors on each gate (see the Typical Application Diagram), create a programmable ramp (soft turn-on) to control inrush currents. A built in charge pump supplies the gate drive for the 12V supply N-Channel MOSFET switch. Over current protection is facilitated by two external current sense resistors. When the current through either resistor exceeds the user programmed value the N-Channel MOSFETs are latched off by the HIP1013. The controller is reset by a rising edge on either PWRON pin. Choosing the voltage selection mode the HIP1013 controls either +12V/5V or +3.3V/+5V supplies. Although pin compatible with the HIP1012 device, the HIP1013 does not offer current regulation during an OC event.

The HIP1012A is a HOT SWAP dual supply power distribution controller. It drives two external N-Channel MOSFETs to distribute power while providing load fault isolation. It features soft turn-on, overcurrent protection, and timeout control.

The ISL6118 is Intersil's dual channel, fully independent overcurrent (OC) fault protection IC for the +2.5V to +5.5V environment. This device features internal current monitoring, accurate current limiting, integrated power switches and current limited delay to latch-off for system protection. The ISL6118 current sense and limiting circuitry sets the current limit to a nominal 0.6A, which is well suited for the 3.3V AUX ACPI application. The ISL6118 is the ideal companion chip to the HIP1011D and HIP1011E dual PCI hot plug controllers. Together these and the ISL6118 fully control the four legacy PCI voltages (±12V, +3.3V, +5V) and the 3.3V AUX, respectively, for power control of two PCI slots compliant to PCI Bus Power Management Interface Spec Rev 1.1. Designed to be co-located with the HIP1011D on the motherboard, the ISL6118 provides OC fault notification, accurate current limiting and a consistent timed latch-off thus isolating and protecting the voltage bus in the presence of an OC event or short circuit during all PCI Bus Power States as defined by the PCI specification. The 12ms time to latch-off ensures that the system does not experience an overcurrent event during PCI bus power state transitions.

ISL6119 is a USB dual port power controller from Intersil that provides fully independent overcurrent (OC) fault protection. This device operates over the +2.5V to +5.5V range and features internal current monitoring, accurate current limiting, integrated power switches and current limited delay to latch-off for system protection. The ISL6119 current sense and limiting circuitry sets the current limit to a nominal 1A, making this device well suited for the USB port power management application. The ISL6119 provides OC fault notification, accurate current limiting and a consistent timed latch-off thus isolating and protecting the voltage bus in the presence of an OC event or short circuit. The 12ms time to latch-off is independent of the adjoining switch’s electrical or thermal condition and the OC response time is inversely related to the OC magnitude. Each ISL6119 incorporates in a single 8 lead SOIC package two 80mΩ N-channel MOSFET power switches for power control. Each switch is driven by a constant current source giving a controlled ramp up of the output voltage. This provides a soft start function to prevent current overshoot.

The ICL7673 is a low-cost automatic battery backup switch that can automatically connect the output to the higher voltage of the two power supplies

The HMP8170 NTSC and PAL encoder is a high-quality video encoder that supports YCbCr digital video data driving P0-P15 inputs, optionally lowpass filtered to 6MHz and driving the Y analog output. Cb and Cr are each lowpass filtered to 1.3MHz, quadrature modulated, and added together. The result drives the C analog output. The digital Y and C data are also added together and drive the two composite analog outputs. The DACs can drive doubly-terminated (37.5Ω) lines, and run at a 2x oversampling rate to simplify the analog output filter requirements.