NCV494: PWM Controller (Automotive)
|
|
»View Reliability Data
»View Material Composition » Product Change Notification |
The TL494 PWM Controller incorporates all the functions required in the construction of a pulse width modulation (PWM) control circuit on a single chip. Designed primarily for power-supply control, this device offers the flexibility to tailor the power-supply control circuitry to a specific application.
The TL494 PWM Controller contains two error amplifiers, an on-chip adjustable oscillator, a dead-time control (DTC) comparator, a pulse-steering control flip-flop, a 5-V, 5%-precision regulator, and output-control circuits.
The error amplifiers exhibit a common-mode voltage range from -0.3 V to VCC -2 V. The dead-time control comparator has a fixed offset that provides approximately 5% dead time. The on-chip oscillator can be bypassed by terminating RT to the reference output and providing a sawtooth input to CT, or it can drive the common circuits in synchronous multiple-rail power supplies.
The uncommitted output transistors provide either common-emitter or emitter-follower output capability. This PWM Controller provides for push-pull or single-ended output operation, which can be selected through the output-control function. The architecture of this device prohibits the possibility of either output being pulsed twice during push-pull operation.
The TL494C PWM Controller is characterized for operation from 0C to 70C. The TL494I is characterized for operation from -40C to 85C. The TL494B is characterized for operation from -40C to 125C. The NCV494B is characterized for -40C to 125C and certified for automotive applications.
The TL494 PWM Controller contains two error amplifiers, an on-chip adjustable oscillator, a dead-time control (DTC) comparator, a pulse-steering control flip-flop, a 5-V, 5%-precision regulator, and output-control circuits.
The error amplifiers exhibit a common-mode voltage range from -0.3 V to VCC -2 V. The dead-time control comparator has a fixed offset that provides approximately 5% dead time. The on-chip oscillator can be bypassed by terminating RT to the reference output and providing a sawtooth input to CT, or it can drive the common circuits in synchronous multiple-rail power supplies.
The uncommitted output transistors provide either common-emitter or emitter-follower output capability. This PWM Controller provides for push-pull or single-ended output operation, which can be selected through the output-control function. The architecture of this device prohibits the possibility of either output being pulsed twice during push-pull operation.
The TL494C PWM Controller is characterized for operation from 0C to 70C. The TL494I is characterized for operation from -40C to 85C. The TL494B is characterized for operation from -40C to 125C. The NCV494B is characterized for -40C to 125C and certified for automotive applications.
Features | Benefits | ||||
---|---|---|---|---|---|
|
|
||||
|
|
||||
|
|||||
|
|||||
|
|||||
|
|||||
|
|||||
|
|||||
|
|||||
|
|||||
|
Applications | End Products | |
---|---|---|
|
|
Technical Documentation & Design Resources
Data Sheets (1) | Package Drawings (1) |
Availability & Samples
|
Specifications
|
Case Outlines
|
Intaractive Block Diagram
|
|
|
|
|
|
|
|
|
|||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Case Outline |
|
|
|
|
|||||||||||||
NCV494BDR2G | Active |
|
NCV494 | SOIC-16 | 751B-05 | 1 | 260 | Tape and Reel | 2500 | $0.6
|
||||||||
NCV494BDR2 | Obsolete |
|
NCV494 | SOIC-16 | 751B-05 | 1 | 235 | Tape and Reel | 2500 |
Market Leadtime (weeks) | : | Contact Factory |
Market Leadtime (weeks) | : | Contact Factory |
Product
Description
Pricing ($/Unit)
Compliance
Status
Topology
Phases
Control Mode
VCC Min (V)
VCC Max (V)
fSW Typ (kHz)
Package Type
NCV494BDR2G
$0.6
Pb
A
H
P
Active
Flyback
Half-Bridge
Push-Pull
Step-Down
1
Voltage Mode
7
40
200
SOIC-16
Application
Diagram - Block
Support |