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ISL68226IRAZ Datasheet(PDF) 14 Page - Renesas Technology Corp

Part # ISL68226IRAZ
Description  Digital Triple Output, 8-Phase PWM Controller
PDF  96 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

ISL68226IRAZ Datasheet(HTML) 14 Page - Renesas Technology Corp

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ISL68226
3. Initializing the Device
FN9329 Rev.1.00
Page 14 of 95
Oct.1.20
3.
Initializing the Device
3.1
Power-On Reset (POR)
ISL68226 initialization begins after VCC crosses its rising POR threshold. When POR conditions are met, basic
digital subsystem integrity checks begin. During this process, the controller starts the telemetry subsystem,
configures its PMBus address according to the ADDRESS pin resistor value, loads the selected user
configuration from NVM as indicated by the CONFIG pin resistor value, checks fault status, and prepares for
regulation. The PWM pins are held in tri-state until the device is commanded to regulate. Figure 3 shows the
device initialization sequence.
Figure 3. Simplified PMBus Initialization Timing Diagram



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