ISL78200 Intersil Corporation, ISL78200 Datasheet
ISL78200
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ISL78200 Summary of contents
Page 1
... Synchronous Buck or Boost Buck Converter ISL78200 The ISL78200 is a synchronous buck controller with a 90mΩ high side MOSFET and low side driver integrated. The ISL78200 supports a wide input voltage range from 3V to 40V. Regarding the output current capability, the ISL78200 can typically support a continuous load of 2.5A under conditions range 36V, 500kHz, +85° ...
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... PGOOD is an open drain output that will be pulled low immediately under the events when the output is out of regulation ( pin pulled low. PGOOD is equipped with a fixed delay of 1000 cycles upon output power- ISL78200 ISL78200 (20 LD HTSSOP) TOP VIEW PGND ...
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... RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. 3. For Moisture Sensitivity Level (MSL), please see device information page for ISL78200. For more information on MSL please see techbrief TB363. 3 ...
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Block Diagram VCC VIN BIAS LDO POWER-ON SGND RESET EN EXT_BOOST MODE PFM/FPWM SYNC FS OSCILLATOR SOFT-START VCC LOGIC 5 µ AUXVCC AUXILARY LDO OCP, OVP, OTP PFM LOGIC BOOST MODE CONTROL VOLTAGE MONITOR SLOPE COMPENSATION + 0.8V ...
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... SYNC VIN VCC ISL78200 BOOT ILIMIT PHASE SS FS PGND FB SGND COMP PGOOD EN VIN MODE SYNC BOOT AUXVCC VCC ISL78200 PHASE ILIMIT LGATE SS PGND EXT_BOOST FB FS SGND COMP FIGURE 3B. NON-SYNCHRONOUS BUCK Switch Over to V OUT PGOOD EN VIN MODE SYNC BOOT AUXVCC VCC ...
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... Current Limit of AUX LDO AUX LDO Switch-over Rising Threshold AUX LDO Switch-over Falling Threshold AUX LDO Switch-over Hysteresis 6 ISL78200 Thermal Information Thermal Resistance HTSSOP Package (Notes Maximum Junction Temperature (Plastic Package +150°C Maximum Storage Temperature Range -65°C to +150°C ...
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... BOOST CONVERTER CONTROL EXT_BOOST Boost_Turn-Off Threshold Voltage EXT_BOOST Hysteresis Sink Current AUXVCC Boost Turn-Off Threshold Voltage AUXVCC Hysteresis Sink Current 7 ISL78200 Refer to the Block Diagram (page 4) and Typical Application Schematics (page 5). Operating conditions = 4.5V -40°C to +105°C. Typicals are SYMBOL ...
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... Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization and are not production tested. 7. Wire bonds not included. The wire bond resistance between VIN and PHASE pin is 32mΩ typical. 8 ISL78200 Refer to the Block Diagram (page 4) and Typical Application Schematics (page 5). Operating conditions = 4.5V -40°C to +105°C. Typicals are at T ...
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... 0.0 0.5 1.0 LOAD CURRENT (A) FIGURE 9. EFFICIENCY, SYNCHRONOUS BUCK, FORCED PWM MODE, 500kHz, V OUT 9 ISL78200 100 95 90 24V 40V 1.5 2.0 2.5 FIGURE 6. EFFICIENCY, SYNCHRONOUS BUCK, PFM MODE, 5V +25°C A 4.970 4.968 4.966 4 ...
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... FIGURE 13. IC DIE TEMPERATURE UNDER +25°C AMBIENT TEMPERATURE, STILL AIR, 500kHz 2V/DIV OUT PHASE 20V/DIV 2ms/DIV FIGURE 15. SYNCHRONOUS BUCK MODE, V ENABLE ON 10 ISL78200 (Continued 12V 24V 40V 100 125 FIGURE 12. IC DIE TEMPERATURE UNDER +105°C AMBIENT ...
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... OUT LGATE 5V/DIV I 1A/DIV OUT PHASE 20V/DIV 1ms/DIV FIGURE 21. V 24V STEP LOAD, PFM MODE IN 11 ISL78200 (Continued) V 2V/DIV OUT FIGURE 18. SYNCHRONOUS BUCK WITH FORCE PWM MODE, FIGURE 22. NON-SYNCHRONOUS BUCK, FORCE PWM MODE, V 20mV/DIV (5V OFFSET) OUT PHASE 20V/DIV 5µs/DIV ...
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... IN V 1V/DIV OUT V _BOOST 5V/DIV IN 20ms/DIV FIGURE 25. BOOST BUCK MODE, BOOST INPUT STEP FROM 3V TO 40V 12 ISL78200 (Continued) 10mV/DIV (5V OFFSET) FIGURE 24. BOOST BUCK MODE, BOOST INPUT STEP FROM FIGURE 26. BOOST BUCK MODE 1V/DIV OUT V _BOOST 5V/DIV IN 20ms/DIV 40V TO 3V ...
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... IC to have PFM (Pulse Frequency Modulation) operation in light load. In PFM mode, the switching frequency is dramatically reduced to minimize the switching loss. The ISL78200 enters PFM mode when the MOSFET peak current is . After Power-On Reset CC lower than the PWM/PFM boundary current threshold. This threshold is 700mA as default when there is no programming resistor at MODE pin ...
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... Output Current With the high side MOSFET integrated, the maximum current ISL78200 can support is decided by the package and many operating conditions including input voltage, output voltage, duty cycle, switching frequency and temperature, etc. First: The maximum DC output current is 5A limited by the package ...
Page 15
... IC’s bias (VCC) LDO is powered by the boost output. For an example of 3.3V output application, when the battery drops to 2V, the VIN pin voltage is powered by the boost output voltage that is 5.2V (Equation 7), meaning the VIN pin (buck input) still needs 5.2V to keep the IC working. 15 ISL78200 BATTERY + 0.8V I_HYS = 3µA LOGIC 0.8V I_HYS = 3µ ...
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... FS With an external square pulse waveform (with frequency 10% higher than the local frequency, 10% to 90% duty cycle and pulse width higher than 150ns) on the SYNC pin, the ISL78200 will synchronize its switching frequency to the fundamental frequency of the input waveform. The internal oscillator synchronizes with the leading edge of the input signal. The rising edge of UGATE PWM is delayed by 180 degrees from the leading edge of the external clock signal ...
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... The design target in boost IN OUT 17 ISL78200 soft-start is to ensure the boost input current is sustained to a minimum but capable of charging the boost output voltage to have a voltage step equaling to V block the inductor current increase and not high enough to be able to charge the output capacitor to the final steady state value ...
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... 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. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see 18 ISL78200 Initial Release www.intersil.com/askourstaff http://rel.intersil.com/reports/search.php For additional products, see www ...
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... C SEATING PLANE b 0. LEADS SIDE VIEW SEE DETAIL “X” END VIEW DETAIL X 19 ISL78200 MDP0048 HTSSOP (HEAT-SINK TSSOP) FAMILY A (N/2)+1 SYMBOL PIN #1 I.D. 0. (N/2) N/2 LEAD TIPS D1 E2 NOTES: 1. Dimension “D” does not include mold flash, protrusions or gate ...