SA-WSIS10/SS-IS10
26
26
SA-WSIS10/SS-IS10
•
IC Block Diagrams
– DSP Board –
IC612 NJM2387ADL3 (TE2)
1
VIN
2
CONTROL
5
GND
3
VOUT
4
VADJ
BANDGAP
REFERENCE
OVER VOLTAGE
PROTECTION
OVER CURRENT
PROTECTION
THERMAL
PROTECTION
ON/OFF
CONTROL
REGULATOR
VDD 2
OUT 1
GND 3
+
–
VREF
CD
5
NC
4
OVER
CURRENT
PROTECTOR
LATCH
&
DRIVER
OVER HEAT
PROTECTOR
REGULATOR
ON/OFF
SOFT
START
+
–
+
–
RESET
VREF
COMPARATOR
ERROR AMP
OSC
1
VIN
2
SW OUT
3
GND
4
ADJ
5
SOFT START
IC613 PST3635NR
IC614 SI8008TM-TL
•
Waveforms
– DSP Board –
– AMP Board –
1
IC701
qd
(CKOUT(O))
1 V/DIV, 50 ns/DIV
81.4 ns
3.8 Vp-p
4
IC701
wa
(XOUT(O))
1 V/DIV, 50 ns/DIV
81.4 ns
4.2 Vp-p
20.8
µ
s
3.8 Vp-p
3
IC701
qg
(LRCK(O))
1 V/DIV, 10
µ
s/DIV
20.8
µ
s
4.1 Vp-p
5
IC821
ih
(DPDVLRCK)
1 V/DIV, 10
µ
s/DIV
6
IC821
ij
(DPDVBCK)
1 V/DIV, 100 ns/DIV
326 ns
4.1 Vp-p
2
IC701
qf
(BCK(O))
1 V/DIV, 100 ns/DIV
326 ns
4 Vp-p
7
IC821
<zvc
(XTAL)
1 V/DIV, 20 ns/DIV
40 ns
1.6 Vp-p
8
IC611
qd
(Xout)
1 V/DIV, 100 ns/DIV
100 ns
3.2 Vp-p
20.4 ns
3.4 Vp-p
20.4 ns
3.4 Vp-p
qa
IC271
qf
(XFSOOUT)
1 V/DIV, 10 ns/DIV
qs
IC251
qf
(XFSOOUT)
1 V/DIV, 10 ns/DIV
20.4 ns
3.4 Vp-p
20.4 ns
3.4 Vp-p
qd
IC231
qf
(XFSOOUT)
1 V/DIV, 10 ns/DIV
qf
IC222
4
(OUT)
1 V/DIV, 10 ns/DIV