ISL95813EV1Z

ISL95813EV1Z Datasheet

Designer’s Guide to the ISL95813 Evaluation Board

Part	Datasheet
ISL95813EV1Z	ISL95813EV1Z (pdf)

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Application Note 1846 Designer’s Guide to the ISL95813 Evaluation Board The ISL95813 single-phase controller provides a fully compliant VR12.6 power supply solution for Intel microprocessors. It provides a tightly regulated output voltage that is programmed through a high speed serial bus interface with the CPU. This interface also allows the CPU to acquire real-time information from the voltage regulator VR , which includes load current and VR temperature. Based on Intersil's Robust Ripple Regulator R3 technology, the PWM modulator provides faster transient response and settling time when compared against traditional modulation schemes. Its variable frequency topology also allows for natural period stretching discontinuous conduction mode DCM for increased efficiency and power savings in light load situations. The ISL95813 has several other key features that include DCR current sensing with single NTC thermal compensation discrete resistor current sensing differential remote voltage feedback and user-programmable boot voltage, IMAX, TMAX, voltage transition slew rate, and switching frequency. What’s Inside The Evaluation Board Kit contains the following documents: • ISL95813 datasheet • AN1846 this document What’s Needed The following materials will be needed to perform testing on the ISL95813: • 5V, 3A power supply • Adjustable 20A Power Supply Up to 20V • 12V, 3A power supply optional, used with on-board load generator • Electronic load • 4-channel oscilloscope • Precision multi-meter • Gen 4 Intel VT Tool - To use the SVID emulator hardware and software instead of the VT Tool, resistors R10, R12, and R16 must be depopulated Startup Procedure Set the 5V supply to 5V and keeping the output off, connect the + end to P1 and the - end to P4. Set the second supply to the desired input voltage 4.6V-19V and with the output off, connect the + end to J9 and the - end to J12. If using the on-board load generator set the third supply to 12V and with the output off, connect the + end to P2 and the - end to P3. Ensure jumpers J1, J17, and J19 are shorted. S1 and S2 should be in the OFF position. If using Intel’s test tool, plug the interposer and tool into the CPU socket. Turn on the 5V supply and then the VIN supply. Plug in the power cable to the VT Tool if in place. Finally, if using the on board transient generator power on the 12V supply. Flip S1 to the ON position. D1 should change from RED to GREEN. Measure VOUT with a multi-meter from TP9 + to TP10 It should read 1.7V ±8.5mV. If using the VT Tool measure VOUT across TP29 + and TP28 Validation and testing of the ISL95813 can now begin. June 14, 2013 AN1846.0 CAUTION These devices are sensitive to electrostatic discharge follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 \| Copyright Intersil Americas LLC All Rights Reserved Intersil and design is a trademark owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners. Application Note 1846 Using the On-Board Transient Generator HIP2100 FIGURE EVALUATION BOARD TRANSIENT GENERATOR • When HI is switched to GND turn off transient generator - HO go low - Q1 turns off - Assuming Q2 is initially on, it will then shut off - C1 charges to 12V • When HI is switched to C1 - HO goes hi - Q1 turns on and C1 discharges through R2 - Q2 turns on and pulls current from VOUT Load Step - When C1 discharges enough HI switches low and HO goes low too - Q1 and Q2 turn off Load Release - C1 charges through R1+R2 until HI switches HI again and the cycle repeats • Setting Parameters - = C1 R2 - = C1 R1 R2 - ILOAD = R3 controls the slope of the Load Step - R4 controls the slope of the Load Release ISL95813

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Application Note 1846

Designer’s Guide to the ISL95813 Evaluation Board

The ISL95813 single-phase controller provides a fully compliant VR12.6 power supply solution for Intel microprocessors. It provides a tightly regulated output voltage that is programmed through a high speed serial bus interface with the CPU. This interface also allows the CPU to acquire real-time information from the voltage regulator VR , which includes load current and VR temperature.

Based on Intersil's Robust Ripple Regulator R3 technology, the PWM modulator provides faster transient response and settling time when compared against traditional modulation schemes. Its variable frequency topology also allows for natural period stretching discontinuous conduction mode DCM for increased efficiency and power savings in light load situations.

The ISL95813 has several other key features that include DCR current sensing with single NTC thermal compensation discrete resistor current sensing differential remote voltage feedback and user-programmable boot voltage, IMAX, TMAX, voltage transition slew rate, and switching frequency.

What’s Inside

The Evaluation Board Kit contains the following documents:
• ISL95813 datasheet
• AN1846 this document

What’s Needed

The following materials will be needed to perform testing on the ISL95813:
• 5V, 3A power supply
• Adjustable 20A Power Supply Up to 20V
• 12V, 3A power supply optional, used with on-board load generator
• Electronic load
• 4-channel oscilloscope
• Precision multi-meter
• Gen 4 Intel VT Tool - To use the SVID emulator hardware and software instead of the VT Tool, resistors R10, R12, and R16 must be depopulated

Startup Procedure

Set the 5V supply to 5V and keeping the output off, connect the + end to P1 and the - end to P4.

Set the second supply to the desired input voltage 4.6V-19V and with the output off, connect the + end to J9 and the - end to J12.

If using the on-board load generator set the third supply to 12V and with the output off, connect the + end to P2 and the - end to P3.

Ensure jumpers J1, J17, and J19 are shorted. S1 and S2 should be in the OFF position.

If using Intel’s test tool, plug the interposer and tool into the CPU socket.

Turn on the 5V supply and then the VIN supply. Plug in the power cable to the VT Tool if in place. Finally, if using the on board transient generator power on
the 12V supply. Flip S1 to the ON position. D1 should change from RED to

GREEN. Measure VOUT with a multi-meter from TP9 + to TP10

It should read 1.7V ±8.5mV. If using the VT Tool measure VOUT across TP29 + and TP28 Validation and testing of the ISL95813 can now begin.

June 14, 2013

AN1846.0

CAUTION These devices are sensitive to electrostatic discharge follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC All Rights Reserved

Intersil and design is a trademark owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners.

Application Note 1846

Using the On-Board Transient Generator

HIP2100

FIGURE EVALUATION BOARD TRANSIENT GENERATOR
• When HI is switched to GND turn off transient generator - HO go low - Q1 turns off - Assuming Q2 is initially on, it will then shut off - C1 charges to 12V
• When HI is switched to C1 - HO goes hi - Q1 turns on and C1 discharges through R2 - Q2 turns on and pulls current from VOUT Load Step - When C1 discharges enough HI switches low and HO goes low too - Q1 and Q2 turn off Load Release - C1 charges through R1+R2 until HI switches HI again and the cycle repeats
• Setting Parameters - = C1 R2 - = C1 R1 R2 - ILOAD = R3 controls the slope of the Load Step - R4 controls the slope of the Load Release

ISL95813

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Datasheet ID: ISL95813EV1Z 639137