Data Sheet, Rev. 1.0, Sept. 2009
BTN7933B
High Current PN Half Bridge
NovalithIC™
Automotive Power
High Current PN Half Bridge
BTN7933B
Table of Contents
1
2
2.1
2.2
3
3.1
3.2
4
4.1
4.2
4.3
5
5.1
5.2
5.2.1
5.2.2
5.2.3
5.3
5.3.1
5.3.2
5.3.3
5.3.4
5.3.5
5.3.6
5.4
5.4.1
5.4.2
5.4.3
5.4.4
5.4.5
5.4.6
6
6.1
6.2
6.3
7
8
Overview
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Block Diagram
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Pin Configuration
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin Definitions and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
General Product Characteristics
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Functional Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermal Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6
6
8
8
Block Description and Characteristics
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Supply Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Power Stages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Power Stages - Static Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Switching Times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Power Stages - Dynamic Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Protection Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Overvoltage mode (Smart Clamping) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Undervoltage Shut Down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Overtemperature Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Current Limitation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Short Circuit Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Electrical Characteristics - Protection Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Control and Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Input Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Dead Time Generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Adjustable Slew Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Status Flag Diagnosis With Current Sense Capability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Truth Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Electrical Characteristics - Control and Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Application Information
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Application Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Layout Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Half-bridge Configuration Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
22
22
22
23
Package Outlines
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Revision History
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Data Sheet
2
Rev. 1.0, 2009-09-09
High Current PN Half Bridge
NovalithIC™
BTN7933B
1
Features
•
Overview
Path resistance of max. 55 mΩ @ 150
°C
(typ. 28 mΩ @ 25
°C)
High Side: max. 17 mΩ @ 150
°C
(typ. 10 mΩ @ 25
°C)
Low Side: max. 38 mΩ @ 150
°C
(typ. 18 mΩ @ 25
°C)
Enhanced switching speed for reduced switching losses
(rise/fall times down to typ. 500ns)
Extended operating voltage range down to 4.5 V (high side switch)
Low quiescent current of typ. 7
μA
@ 25
°C
PWM capability of up to 25 kHz combined with active freewheeling
Switched mode current limitation for reduced power dissipation
in overcurrent
Current limitation level of 20 A min. / 32 A typ. (low side)
Status flag diagnosis with current sense capability
Overtemperature shut down with latch behaviour
Smart clamping in overvoltage
Undervoltage shut down
Driver circuit with logic level inputs
Adjustable slew rates for optimized EMI
Operation up to 28V
Green Product (RoHS compliant)
AEC Qualified
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
PG-TO263-7-1
Description
The BTN7933B is an integrated high current half bridge for motor drive applications. It is part of the NovalithIC™
family containing one p-channel highside MOSFET and one n-channel lowside MOSFET with an integrated driver
IC in one package. Due to the p-channel highside switch the need for a charge pump is eliminated thus minimizing
EMI. Interfacing to a microcontroller is made easy by the integrated driver IC which features logic level inputs,
diagnosis with current sense, slew rate adjustment, dead time generation, smart clamping in overvoltage, and
protection against overtemperature, undervoltage, overcurrent and short circuit.
The BTN7933B provides a cost optimized solution for protected high current PWM motor drives with very low
board space consumption.
Type
BTN7933B
Data Sheet
Package
PG-TO263-7-1
3
Marking
BTN7933B
Rev. 1.0, 2009-09-09
High Current PN Half Bridge
BTN7933B
Block Diagram
2
Block Diagram
The BTN7933B is part of the NovalithIC™ family containing three separate chips in one package: One p-channel
highside MOSFET and one n-channel lowside MOSFET together with a driver IC, forming an integrated high
current half-bridge. All three chips are mounted on one common lead frame, using the chip on chip and chip by
chip technology. The power switches utilize vertical MOS technologies to ensure optimum on state resistance.
Due to the p-channel highside switch the need for a charge pump is eliminated thus minimizing EMI. Interfacing
to a microcontroller is made easy by the integrated driver IC which features logic level inputs, diagnosis with
current sense, slew rate adjustment, dead time generation, smart clamping in overvoltage and protection against
overtemperature, undervoltage, overcurrent and short circuit. The BTN7933B can be combined with other
BTN7933B to form H-bridge and 3-phase drive configurations.
2.1
Block Diagram
VS
Undervolt.
detection
Overvolt.
detection
Current
Sense
Overcurr.
Detection
HS
Overtemp.
detection
IS
Digital Logic
IN
Gate Driver
HS
LS off
HS off
OUT
Gate Driver
LS
INH
SR
Slewrate
Adjustment
Overcurr.
Detection
LS
GND
Figure 1
Block Diagram
2.2
Terms
Following figure shows the terms used in this data sheet.
V
S
I
IN
IN
VS
I
VS
, -I
D( HS)
V
DS (HS )
V
IN
V
INH
V
SR
I
INH
INH
I
OUT
, I
L
O UT
I
SR
SR
V
SD (LS )
V
OUT
I
IS
IS
G ND
V
IS
I
GND ,
I
D( LS)
Figure 2
Data Sheet
Terms
4
Rev. 1.0, 2009-09-09
High Current PN Half Bridge
BTN7933B
Pin Configuration
3
3.1
Pin Configuration
Pin Assignment
8
1234 5 67
Figure 3
Pin Assignment BTN7933B (top view)
3.2
Pin
1
2
3
4,8
5
Pin Definitions and Functions
Symbol
GND
IN
INH
OUT
SR
I/O
-
I
I
O
I
Function
Ground
Input
Defines whether high- or lowside switch is activated
Inhibit
When set to low device goes in sleep mode
Power output of the bridge
Slew Rate
The slew rate of the power switches can be adjusted by connecting
a resistor between SR and GND
Current Sense and Diagnostics
Supply
6
7
IS
VS
O
-
Bold type: pin needs power wiring
Data Sheet
5
Rev. 1.0, 2009-09-09
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