2-86
BVW-55
IC
V
EE
V
CC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
+
_
+
_
+
_
+
_
OPERATIONAL AMPLIFIER
(LOW-NOISE, JFET-INPUT)
—TOP VIEW—
TL074CPW (TI)
TL074CPW-E05
1
2
3
4
8
7
6
5
OUT
FEED BACK
INPUT
RT
DEAD TIME
S.C.P
GND
V
CC
CONTROLLER
(Short Circuit Protection)
INPUT
4
3
REFERENCE
VOLTAGE
SWITCH
“ON” at
OSC
U.V.L.O
PWM
+
S.C.P.
LATCH
S.C.P.
S.C.P.
COMPA-
ERROR
AMP
RATOR
COMPARATOR
COMPARATOR
DEAD TIME
COMPARATOR
FEED
BACK
5
2
V
CC
DEAD TIME
7
6
CONTROL
1
OUT
8
GND
“H”
R T
S.C.P.
TIMING
CAPACITOR
_
+
_
+
_
+
_
+
_
SWITCHING REGULATOR CONTROLLER
—TOP VIEW—
TL5001CD (TI)
TL5001CDR
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
CT
RT
+
IN 1
FEED BACK 1
DEAD TIME CONT 1
OUT 1
_
IN 1
+
IN 2
_
IN 2
V REF
OUT
SCP
FEED BACK 2
DEAD TIME CONT 2
OUT 2
GND
V
CC
RT
2
1
6
CT DT 1
3
4
5
14
13
12
+
IN 1
FB 1
FB 2
DT 2
_
–
+
–
11
15
SCP
10
OUT 2
7
OUT 1
16
V REF
2.5 V
REG
SHORT CIRCUIT
PROTECTOR
TR I
OSC
_
+
_
+
_
+
_
IN 1
+
IN 2
_
IN 2
DUAL PWM POWER CONTROLLER
—TOP VIEW—
TL1451ACPW-E05 (TI)
1
2
3
4
IN
+
IN
_
OE
OUT
+
OUT
_
NC
V
CC
GND
8
7
6
5
HIGH SPEED COMPARATOR (TTL OUTPUT)
—TOP VIEW—
TL712CPS (TI)
TL712CPS-E05
1
2
3
4
5
6
7
14
13
12
11
10
9
8
VCO
OUT
FA
IN
FB
IN
PFD
OUT
SELECT
IN
V
DD
1
GND1
GND2
NC
R BIAS
VCO CONT
IN
VCO INH
IN
PFD INH
IN
12
10
2
13
4
5
9
VCO CONT
VCO INH
SELECT
R BIAS
FA
FB
PFD INH
VCO
PFD
3
6
INPUT
FA
FB
PFD INH
SELECT
VCO CONT
VCO INH
OUTPUT
PFD
VCO
OTHER
R BIAS
: REFERENCE FREQUENCY
: INPUT FREQUENCY FROM OUTSIDE COUNTER
: PFD INHIBIT
: VCO OUTPUT FREQUENCY SELECT
: VCO CONTROL VOLTAGE
: VCO INHIBIT
: PHASE FREQUENCY DETECTOR
: VOLTAGE CONTROLLED OSCILLATOR
: BIAS RESISTOR FOR VCO OSCILLATION FREQUENCY SETTING
V
DD
2
C-MOS VCO AND PHASE FREQUENCY DETECTOR
—TOP VIEW—
BIAS
CONTROL
12
VCO CONT
13
R BIAS
10
VCO INH
2
SELECT
DETECTOR
4
FA
5
FB
9
PFD INH
CHARGE
PUMP
6
PFD
VCO
OUTPUT
1/2
MULTIPLEXER
3
VCO
TLC2932IPW (TI)
TLC2932IPW-E05
Summary of Contents for BVW-55
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