RT3602AC
Pin No
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
Pin Name
BOOT_SA
UGATE_SA
PHASE_SA
LGATE_SA
PVCC
LGATE_MAIN
PHASE_MAIN
UGATE_MAIN
BOOT_MAIN
LGATE_AUXI
PHASE_AUXI
UGATE_AUXI
BOOT_AUXI
TSEN_AUXI
FB_AUXI
RGND_AUXI
COMP_AUXI
VSEN_AUXI
ISENN_AUXI
ISENP_ AUXI
IMON_AUXI
VR_HOT
VDIO
ALERT
VCLK
DRVEN
PWM_MAIN
EN
VR_READY
Pin Function
Bootstrap supply for high-side gate MOSFET driver for VCCSA VR.
High-side driver output for VCCSA VR. Connect the pin to the gate of high-
side MOSFET.
Switch node of high-side driver for VCCSA VR. Connect the pin to high-side
MOSFE source together with the low-side MOSFET drain and inductor.
Low-side driver output for VCCSA VR. This pin drives the gate of low-side
MOSFET.
Driver power supply input. Connect this pin to GND by a minimum 2.2μF
ceramic Capacitor.
Low-side driver output for MAIN rail VR. This pin drives the gate of low-side
MOSFET.
Switch node of high-side driver for MAIN rail VR. Connect the pin to high-side
MOSFE source together with the low-side MOSFET drain and inductor.
High-side driver output for MAIN rail VR. Connect the pin to the gate of high-
side MOSFET.
Bootstrap supply for high-side gate MOSFET driver for MAIN rail VR.
Low-side driver output for auxiliary rail VR. This pin drives the gate of low-
side MOSFET.
Switch node of high-side driver for auxiliary rail VR. Connect the pin to high-
side MOSFE source together with the low-side MOSFET drain and inductor.
High-side driver output for auxiliary rail VR. Connect the pin to the gate of
high-side MOSFET.
Bootstrap supply for high-side gate MOSFET driver for auxiliary rail VR.
Thermal sense input for VR.
Negative input of the error amplifier. This pin is for auxiliary rail VR output
voltage feedback to controller.
Return ground for auxiliary rail VR. This pin is the negative node of the
differential remote voltage sensing.
Auxiliary rail VR compensation. This pin is error amplifier output pin.
AUXI VR voltage sense input. This pin is connected to the terminal of AUXI
VR output voltage.
Negative current sense input of single-phase AUXI rail.
Positive current sense input of single-phase AUXI rail.
Auxiliary rail VR current monitor output. This pin outputs a voltage
proportional to the output current.
Thermal monitor output. This pin is active low.
VR and CPU data transmission interface.
SVID alert. (Active low)
Synchronous clock from the CPU.
External driver enable control. Connecting to driver enable pin.
PWM outputs for MAIN VR.
VR enable control input.
VR ready indicator.
Copyright
©
2018 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS3602AC-02
June 2018
www.richtek.com
3
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
