ca3275 Intersil Corporation, ca3275 Datasheet - Page 3

• Manufacturer Part Number: ca3275
• Description: Dual Full Bridge Driver
• Manufacturer: Intersil Corporation

OVERVOLTAGE PROTECTION
AND THERMAL SHUTDOWN
BANDGAP REFERENCE
INTERNAL VOLTAGE
SUPPLY WITH
CIRCUITS
V
CC
PWMB
PWMA
DIRB
DIRA
FIGURE 2. QUADRATURE STEP-MOTOR APPLICATION SCHEMATIC
V
CC
FIGURE 1. CA3275 DUAL FULL BRIDGE DRIVER SCHEMATIC
COIL A–
COIL B–
PWMB
DIRB
PWMA
PWMB
V
V
V
DIRA
DIRB
CC
CC
CC
1
2
3
4
5
6
7
CA3275
14
13
12
10
11
6-5
9
8
COIL A+
GND
PWMA
DIRA
GND
GND
COIL B+
PROTECTION
PROTECTION
PROTECTION
PROTECTION
CIRCUIT
CIRCUIT
CIRCUIT
CIRCUIT
SHORT
SHORT
SHORT
SHORT
Q1
POWER
Q2
POWER
Q5
POWER
Q6
POWER
COIL A–
COIL B–
RA
LA
LB
V
CC
V
CC
MOTOR
COIL A+
COIL B+
STEP
POWER
POWER
POWER
POWER
RB
PROTECTION
PROTECTION
PROTECTION
PROTECTION
Q3
Q4
Q7
Q8
CIRCUIT
CIRCUIT
CIRCUIT
CIRCUIT
SHORT
SHORT
SHORT
SHORT