User Guide

24
POA-3012CI
DA428440E-E (IC501)
BLOCK DIAGRAM
Control chip
44 FB2
Driver chip1
Driver chip2
VDD 22
AGND
1,9,12,21
VSS 2,11,20
IN1- 17
AGND1- 16
ENA 4
IN2+ 15
A
GND2+ 14
TEST 19
DCG 7
THM 3
OCM 6
VDCK 10
Inverting
Non-inverting
VSCK 8
42 ZB2
23 FB1
25 ZB1
28 VD1
32 PWMFB1
33 SUB
41 PWMFB2
39 VS2
35 VDR2
37 VD2
High
drive
Low
drive
Current
d
etect
Current
detect
Reciever
DeadTime
Level
shift
High
drive
Low
drive
Current
detect
Current
detect
Reciever
DeadTime
Level
shift
COM/MECC
Control ch1
Comp
arator
COM/MECC
Control ch2
Comp
arator
Voltage
check
Thermal
Warning
Current Prot / HF Prot
Rec.
Soft
Limit
NTC
36 VD2
26 VDR1
31 PWM1
27 VD1
29 VS1
30 VS1
34 VS
40 PWM2
38 VS2
NC
13,18,24,43
Rec.
Soft
Limit
Current Prot / HF Prot
Shnchro
Circuit
NC 5