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ISL78229EV1Z Datasheet(PDF) 2 Page - Intersil Corporation

Part # ISL78229EV1Z
Description  2-Phase Boost Controller with Drivers and I2C/PMBus
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Manufacturer  INTERSIL [Intersil Corporation]
Direct Link  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL78229EV1Z Datasheet(HTML) 2 Page - Intersil Corporation

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ISL78229
2
FN8656.3
February 12, 2016
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Table of Contents
Pin Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Functional Pin Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Typical Application - 2-Phase Synchronous Boost . . . . . . . . 8
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Thermal Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Recommended Operating Conditions . . . . . . . . . . . . . . . . . . 9
Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Performance Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Operation Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Synchronous Boost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
PWM Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Multiphase Power Conversion . . . . . . . . . . . . . . . . . . . . . . . . . 27
Oscillator and Synchronization. . . . . . . . . . . . . . . . . . . . . . . . . 29
Operation Initialization and Soft-Start. . . . . . . . . . . . . . . . . . . 30
Enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Soft-Start. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
PGOOD Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Current Sense. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Adjustable Slope Compensation . . . . . . . . . . . . . . . . . . . . . . . 33
Light-Load Efficiency Enhancement . . . . . . . . . . . . . . . . . . . . 33
Fault Protections/Indications. . . . . . . . . . . . . . . . . . . . . . . . . . 34
Internal 5.2V LDO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
PMBus™ User Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
Monitor Operating Parameters via PMBus™ . . . . . . . . . . . . . 40
Monitor Faults and Configure Fault Responses. . . . . . . . . . . 40
Set Operation/Fault Thresholds via PMBus™ . . . . . . . . . . . . 40
Accessible Timing for PMBus™ Registers Status . . . . . . . . . 40
Device Identification Address and Read/Write . . . . . . . . . . . 42
PMBus™ Data Formats Used in ISL78229. . . . . . . . . . . . . . . 42
PMBus™ Command Summary . . . . . . . . . . . . . . . . . . . . . . . .43
PMBus™ Command Detail . . . . . . . . . . . . . . . . . . . . . . . . . . .46
OPERATION (01h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
CLEAR_FAULTS (03h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
WRITE_PROTECT (10h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
CAPABILITY (19h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
VOUT_COMMAND (21h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
VOUT_TRANSITION_RATE (27h). . . . . . . . . . . . . . . . . . . . . . . . 49
OT_NTC_FAULT_LIMIT (4Fh) . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
OT_NTC_WARN_LIMIT (51h) . . . . . . . . . . . . . . . . . . . . . . . . . . 51
READ_VIN (88h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
READ_VOUT (89h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
READ_IIN (8Ch) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
READ_TEMPERATURE (8Dh) . . . . . . . . . . . . . . . . . . . . . . . . . . 55
PMBUS_REVISION (98h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
IC_DEVICE_ID (ADh). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
IC_DEVICE_REV (AEh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
FAULT_STATUS (D0h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
FAULT_MASK (D1h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
SET_FAULT_RESPONSE (D2h) . . . . . . . . . . . . . . . . . . . . . . . . . 60
VOUT_OV_FAULT_LIMIT (D3h) . . . . . . . . . . . . . . . . . . . . . . . . . 61
VOUT_UV_FAULT_LIMIT (D4h) . . . . . . . . . . . . . . . . . . . . . . . . . 62
CC_LIMIT (D5h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
OC_AVG_FAULT_LIMIT (D6h) . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Application Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
Output Voltage Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Switching Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Input Inductor Selection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Output Capacitor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Input Capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Power MOSFET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Bootstrap Capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Loop Compensation Design . . . . . . . . . . . . . . . . . . . . . . . . . . 66
VCC Input Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Current Sense Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Layout Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
About Intersil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Package Outline Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . 71


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