isl62391 Intersil Corporation, isl62391 Datasheet
isl62391
Related parts for isl62391
isl62391 Summary of contents
Page 1
... MARKING (°C) ISL62391HRTZ 623 91HRTZ -10 to +100 28 Ld 4x4 TQFN L28.4x4 ISL62391HRTZ-T* 623 91HRTZ -10 to +100 28 Ld 4x4 TQFN L28.4x4 ISL62392HRTZ 623 92HRTZ -10 to +100 28 Ld 4x4 TQFN L28.4x4 ISL62392HRTZ-T* 623 92HRTZ -10 to +100 28 Ld 4x4 TQFN L28.4x4 ISL62391IRTZ 623 91IRTZ -40 to +100 28 Ld 4x4 TQFN L28 ...
Page 2
... Thermal Resistance (Typical, Notes 1, 2) θ TQFN Package . . . . . . . . . . . . . . . . . . Junction Temperature Range .-55°C to +150°C Operating Temp. Range (ISL62391(2)IRTZ .-40°C to +100°C Operating Temp. Range (ISL62391(2)HRTZ .-10°C to +100°C Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C Pb-Free Reflow Profile .see link below http://www ...
Page 3
... FCCM = GND or VCC FCCM floating Low Level (Clear fault level/SMPS off) Float Level (Delayed start) High Level (SMPS on GND or VCC EN = VCC EN = GND EN = VCC EN = GND EN = VCC EN = VCC (ISL62391(2)HRTZ -10° +100°C) = -40°C to +100°C, A MIN TYP MAX UNITS -12 ...
Page 4
... ISL62391, ISL62392 = +25°C. Parameters with MIN and/or MAX limits are 100% A CONDITIONS Falling edge, referenced to FB Falling edge, referenced to FB (ISL62391(2)HRTZ -10°C to +100°C) A Rising edge, referenced to FB Falling edge, referenced to FB Rising edge (Note 3) Falling edge (Note 3) ...
Page 5
... SMPS2 output voltage sense input. Used for soft-discharge and switchover for PVCC 5V LDO. 28 FB2 SMPS2 feedback input used for output voltage programming and regulation. Bottom GND Analog ground for analog and logic signals. Pad 5 ISL62391, ISL62392 FUNCTION 3 3 regulation. regulation. FN6666.4 December 22, 2008 ...
Page 6
... ISL62391, ISL62392 ...
Page 7
... ISL62391, ISL62392 1µ ...
Page 8
... LOGIC LDO3EN 10µA OCSET1/2 ISEN1 16% REF FB1 16% REF *In addition to being used for regulation, VOUT2 will also provide power for PVCC when it is programmed to 5V. 8 ISL62391, ISL62392 VIN 5V LDO 3 R MODULATOR PWM OCP PROTECTION LOGIC OVP/UVP/OCP/OTP UVP OVP THERMAL MONITOR VOUT2* 4 ...
Page 9
... DS(ON 270kHz FB1 PGOOD PHASE1 FIGURE 7. POWER-ON 12V, LOAD = 5A FB1 PGOOD EN1 FIGURE 9. ENABLE CONTROL, EN1 = HIGH 3.3V ISL62391, ISL62392 100 12V 0.01 10.00 = 3.3V, DEM FIGURE 6. CHANNEL 2 EFFICIENCY Ω ; CCM FIGURE 8. POWER-OFF 3.3V ...
Page 10
... FIGURE 13. AUDIO FILTER OPERATION 3.3V 5V, NO LOAD PHASE1 I O1 FIGURE 15. LOAD INSERTION RESPONSE 3.3V 0.1A/8.1A @ 2.5A/µ ISL62391, ISL62392 (Continued) = 12V, FIGURE 12. DCM STEADY-STATE OPERATION 5V 12V, FIGURE 14. TRANSIENT RESPONSE 12V, FIGURE 16. LOAD RELEASE RESPONSE PHASE1 V ...
Page 11
... PGOOD FIGURE 19. DELAYED START 12V EN1 = 1, EN2 = FLOAT, NO LOAD V O1 UGATE1-PHASE1 LGATE1 PGOOD FIGURE 21. CROWBAR OVERVOLTAGE PROTECTION 12V 3.3V, NO LOAD ISL62391, ISL62392 (Continued) = 3.3V 5V, FIGURE 18. DELAYED START 3.3V 5V, FIGURE 20. OVERCURRENT PROTECTION FIGURE 22. TRI-STATE OVERVOLTAGE PROTECTION, EN2 ...
Page 12
... (EQ Power-On Reset The ISL62391, ISL62392 is disabled until the voltage at the (EQ. 2) VIN pin has increased above the rising power-on reset (POR) threshold. Conversely, the controller will be disabled when the voltage at the VIN pin decreases below the falling POR threshold ...
Page 13
... This will produce the best transient response to all load conditions, but will have increased light-load power loss. If FCCM is forced low, the ISL62391, ISL62392 will automatically operate in Diode Emulation Mode (DEM) at light load to optimize efficiency in the entire load range ...
Page 14
... OCSET1 W The ISL62391, ISL62392 monitors the OCSET1 pin and the OUT1 pin voltages. Once the OCSET1 pin voltage is higher than the OUT1 pin voltage for more than 10µs, the ISL62391, ISL62392 declares an OCP fault. The value of R then written as Equation 9: R OCSET ...
Page 15
... The FB pin voltage is 0.6V in normal operation. The rising overvoltage threshold is typically 116% of that value, or 1.16*0.6V = 0.696V. For both the ISL62391 and ISL62392, when an OVP fault is declared, the PGOOD pin will pull-down with 32Ω and latch-off the converter. The OVP fault will remain latched until the EN ...
Page 16
... FIGURE 27. COMPENSATION REFERENCE CIRCUIT The LC output filter has a double pole at its resonant frequency that causes rapid phase change. The R ISL62391, ISL62392 makes the LC output filter resemble a first order system in which the closed loop stability can be achieved with the recommended Type-II compensation network. Intersil ...
Page 17
... MOSFET switches off. 17 ISL62391, ISL62392 There are several power MOSFETs readily available that are optimized for DC/DC converter applications. The preferred high-side MOSFET emphasizes low gate charge so that the device spends the least amount of time dissipating power in the linear region ...
Page 18
... For best performance, place the decoupling capacitor very INPUT close to the PVCC and respective PGND pin, preferably on CAPACITORS the same side of the PCB as the ISL62391, ISL62392 IC. EN (Pins 11 and 24), and PGOOD (Pin 1) These are logic signals that are referenced to the GND pin. Treat as a typical logic signal. ...
Page 19
... 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 www.intersil.com 19 ISL62391, ISL62392 FSET FN6666.4 December 22, 2008 ...
Page 20
... Package Outline Drawing L28.4x4 28 LEAD THIN QUAD FLAT NO-LEAD PLASTIC PACKAGE Rev 0, 9/ PIN 1 INDEX AREA TOP VIEW (3 . 20) PACKAGE BOUNDARY ( 50) TYPICAL RECOMMENDED LAND PATTERN 20 ISL62391, ISL62392 MAX (28X 40) (28X 0 . 60) NOTES: 1 ...