DS8813D Datasheet, PDF (8/23 Pages) Richtek Technology Corporation – Multi-Phase PWM Controller with PWM-VID Reference

RT8813D
Typical Application Circuit
V_IN
V_STANDBY
1
V_PVCC
21 _PVCC
0.1µF
BOOT1 ¹
0
2.2
R_TON
500k
1µF
Optional
2.2µF
C_TON
9 _TON
RT8813D
UGATE1
2
PHASE1 ²⁴
LGATE1 ²³
0
PGOOD
PSI
100k _{16 PGOOD}
4 _PSI
ILIM ¹²
R_OCSET
10k
VID
5 _VID
Enable
3 _EN
8 _VREF
R_REF1
20k
R_BOOT
2k
0.1µF
RGND _RREFADJ
20k
C_REFADJ
6 _REFADJ
2.7nF
RGND
7 _REFIN
R_STANDBY
5.1k
0
R_REF2
18k
C_REFIN
NC
RGND
RGND
0.1µF
BOOT2 ¹⁸
0
UGATE2 ¹⁷
0
PHASE2 ¹⁹
LGATE2 ²⁰
RGND ¹⁰
VSNS ¹¹
NC _{RGND PHASE1}
PHASE2
PHASE3
10k _{15 VCC/ISEN1}
PWM3 ²²
0
10k _{14 TALERT/ISEN2}
10k _{13 TSEN/ISEN3}
V_PVCC
Driver Enable
GND
25 (Exposed pad)
V_IN
10µF x 6
470µF/50V x 2
0.36µH/1.05m 
R_SNUBBER
C_SNUBBER
330µF
2V x 4
V_OUT
22µF x 15
V_IN
0.36µH/1.05m 
V_OUT
R_SNUBBER
10
C_SNUBBER
0.1µF
2.2
0
BOOT UGATE
RT9610
PWM PHASE
VCC _LGATE
EN
GND
10
V_{GND_SNS}
V_{OUT_SNS}
V_IN
0.36µH/1.05m 
R_SNUBBER
C_SNUBBER
Figure 1. 3 Active Phase Configuration
1
V_PVCC
21 _PVCC
0.1µF
BOOT1 ¹
0
2.2
V_IN
R_TON
500k
2.2µF
RT8813D
UGATE1
2
0
9 _TON
PHASE1 ²⁴
1µF
Optional
PGOOD
C_TON
100k _{16 PGOOD}
LGATE1 ²³
ILIM ¹²
R_OCSET
Enable
3 _EN
10k
8 _VREF
R_REF1
20k
R_BOOT
2k
0.1µF
RGND _RREFADJ
20k _{6 REFADJ}
C_REFADJ
2.7nF
RGND
7 _REFIN
BOOT2 ^{18 0.1µF 0}
UGATE2 ¹⁷
0
PHASE2 ¹⁹
LGATE2 ²⁰
R_STANDBY
R_REF2
C_REFIN
V_STANDBY
0
NC
5.1k
18k
NC
RGND ¹⁰
RGND
RGND
VSNS ¹¹
RGND
V_PVCC
100k
5V
VREF ^ROTSET
15 _VCC/ISEN1
14 _TALERT/ISEN2
PSI ⁴
VID ⁵
13 _{TSEN/ISEN3 PWM3} 22
PSI
VID
R_NTC
GND
25 (Exposed pad)
V_IN
10µF x 4
470µF/50V x 2
0.36µH/1.05m 
R_SNUBBER
C_SNUBBER
330µF
2V x 4
V_OUT
22µF x 15
V_IN
0.36µH/1.05m 
R_SNUBBER
C_SNUBBER ¹⁰
10
V_{GND_SNS}
V_{OUT_SNS}
Figure 2. 2 Active Phase Configuration
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is a registered trademark of Richtek Technology Corporation.
DS8813D-00 September 2016