ISL88731EVAL2Z Intersil, ISL88731EVAL2Z Datasheet
ISL88731EVAL2Z
Specifications of ISL88731EVAL2Z
Related parts for ISL88731EVAL2Z
ISL88731EVAL2Z Summary of contents
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... CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 |Copyright Intersil Americas Inc. 2006, 2009, 2011. All Rights Reserved Intersil (and design trademark owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners. ...
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DACV VDDSMB 6 DACS SDA SMBUS 6 DACI SCL EN CSSP LEVEL SHIFTER DACS CSSN 20x ICOMP CSOP LEVEL SHIFTER CSON DACI 20x VFB 500k 100k EN VCOMP FIGURE 1. FUNCTIONAL BLOCK DIAGRAM AC ADAPTER AGND FIGURE 2. TYPICAL ...
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... Ld TQFN Package (Notes 4, 5 Junction Temperature Range .-55°C to +150°C Operating Temperature Range . . . . . . . . . . . . . . . .-10°C to +100°C Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C Pb-Free Reflow Profile .see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp = -10°C to +100°C. Boldface limits apply over the operating temperature A CONDITIONS ChargeVoltage = 0x3130 ...
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Electrical Specifications DCIN = CSSP = CSSN = 18V, CSOP = CSON = 12V, VDDP = 5V, BOOT-PHASE = 5.0V, GND = PGND = 0V, CVDDP = 1µF, IVDDP = 0mA, T range, -10°C to +100°C. (Continued) PARAMETER Battery Quiescent ...
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Electrical Specifications DCIN = CSSP = CSSN = 18V, CSOP = CSON = 12V, VDDP = 5V, BOOT-PHASE = 5.0V, GND = PGND = 0V, CVDDP = 1µF, IVDDP = 0mA, T range, -10°C to +100°C. (Continued) PARAMETER SWITCHING REGULATOR ...
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Typical Operating Performance 5.15 5.10 5.05 5.00 4.95 4.90 4. VDDP LOAD CURRENT (mA) FIGURE 3. VDD LOAD REGULATION -10 - AC-ADAPTER CURRENT (A) FIGURE 5. ...
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Typical Operating Performance UGATE PHASE FIGURE 9. SWITCHING WAVEFORMS AT DIODE EMULATION FIGURE 11. BATTERY REMOVAL ADAPTER CURRENT FIGURE 13. LOAD TRANSIENT RESPONSE 7 ISL88731 DCIN = 20V, 3S2P Li-Battery +25°C, unless otherwise noted. (Continued) A LGATE INDUCTOR ...
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Functional Pin Descriptions BOOT High-Side Power MOSFET Driver Power-Supply Connection. Connect a 0.1µF capacitor from BOOT-to -PHASE. UGATE High-Side Power MOSFET Driver Output. Connect to the high-side N-channel MOSFET gate. LGATE Low-Side Power MOSFET Driver Output. Connect to low-side N ...
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Theory of Operation Introduction The ISL88731 includes all of the functions necessary to charge cell Li-Ion and Li-polymer batteries. A high efficiency synchronous buck converter is used to control the charging voltage up to 19.2V and charging ...
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Short Circuit Protection and 0V Battery Charging Since the battery charger will regulate the charge current to the limit set by the ChargeCurrent register, it automatically has short circuit protection and is able to provide the charge current to wake ...
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START and STOP Conditions As shown in Figure 16, START condition is a HIGH-to-LOW transition of the SDA line while SCL is HIGH. The STOP condition is a LOW-to-HIGH transition on the SDA line while SCL is HIGH. A STOP ...
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... Table 1. ManufacturerID and DeviceID are “read only” registers and can be used to identify the ISL88731. On the ISL88731, ManufacturerID always returns 0x0049 (ASCII code for “I” for Intersil) and DeviceID always returns 0x0001. Enabling and Disabling Charging After applying power to ISL88731, the internal registers contain their POR values (see Table 1) ...
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Setting Charge Voltage Charge voltage is set by writing a valid 16-bit number to the ChargeVoltage register. This 16-bit number translates to a 65.535V full-scale voltage. The ISL88731 ignores the first 4 LSBs and uses the next 11 bits to ...
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Setting Charge Current ISL88731 has a 16-bit ChargeCurrent register that sets the battery charging current. ISL88731 controls the charge current by controlling the CSOP-CSON voltage. The register’s LSB translates to 10µV at CSON-CSOP. With a 10mΩ charge current R resistor ...
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Setting Input-Current Limit The total power from an AC adapter is the sum of the power supplied to the system and the power into the charger and battery. When the input current exceeds the set input current limit, the ISL88731 ...
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Charger Timeout The ISL88731 includes 2 timers to insure the SMBus master is active and to prevent overcharging the battery. ISL88731 will terminate charging if the charger has not received a write to the ChargeVoltage or ChargeCurrent register within 175s ...
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The highest F voltage control mode with the battery removed and may be calculated (approximately) from Equation 5: ⋅ ⋅ SENSE F ------------------------------------------ - = CO ⋅ 2π L Output Capacitor Selection ...
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Low switching loss requires low drain-to-gate charge Q Generally, the lower the drain-to-gate charge, the higher the ON-resistance. Therefore, there is a trade-off between the ON-resistance and drain-to-gate charge. Good MOSFET selection is based on the Figure of Merit (FOM), ...
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VDD RAMP GEN V = VDD/11 RAMP - + PWM INPUT PWM GAIN= FET_RDSON L_DCR PWM INPUT FIGURE 19. SMALL SIGNAL AC MODEL In most cases the Battery resistance is very small (<200mΩ) resulting in a ...
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F ZERO 20 0 -20 F POLE1 -40 -60 0.01 0 FREQUENCY (kHz) FIGURE 21. CHARGE CURRENT LOOP BODE PLOTS DCIN PHASE FET_RDSON CA2 + 0.25 + Σ ...
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F ZERO1 information is added to the feedback to create a second zero F . The low pass filter ZERO2 F2 F2 ISL88731 add a pole and ...
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... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use ...
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Package Outline Drawing L28.5x5B 28 LEAD THIN QUAD FLAT NO-LEAD PLASTIC PACKAGE Rev 1, 10/07 5.00 6 PIN 1 INDEX AREA (4X) 0.15 TOP VIEW ( 4. 65 TYP ) ( 3. 25) TYPICAL RECOMMENDED LAND PATTERN 23 ISL88731 A ...