DS8813D Datasheet, PDF (3/23 Pages) Richtek Technology Corporation – Multi-Phase PWM Controller with PWM-VID Reference

RT8813D
Functional Block Diagram
VREF
VID
REFADJ
PSI
REFIN
VSNS
RGND
EN
TON
VCC/
ISEN1
TALERT/
ISEN2
TSNS/
ISEN3
ILIM
Reference
Output Gen.
Mode Select
OV Threshold
-
Select
+
UV
40% REFIN
+
-
Power On Reset
& Central Logic
Control & Protection Logic
Boot-Phase
Detection 1
Soft-Start
& Slew Rate
Control
PWM
CMP
+
-
Enable To Driver Logic
Logic To Power On Reset
To Power On Reset
V_IN
Detection
Phase
Select
TON
Gen 1
TON
Gen 2
&
TON
Gen 3
+
1V -
Current
Balance
Internal
OTP
I_OCSET
10µ
To Central Logic _{To Protection Logic}
PHASE1 ZCD To Driver Logic
Current
Limit
Boot-Phase
Detection 2
PWM1
Driver
PWM2 ^Logic
S/H
-
GM
+ _VB
S/H
GM^-
+ _VB
S/H
-
GM
ISEN3
+ _VB
PVCC
PGOOD
BOOT1
UGATE1
PHASE1
LGATE1
BOOT2
UGATE2
PHASE2
LGATE2
PWM3
Copyright ©2016 Richtek Technology Corporation. All rights reserved.
DS8813D-00 September 2016
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
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