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PDF MC33253 Data sheet ( Hoja de datos )
| Número de pieza | MC33253 | |
| Descripción | Full Bridge Pre-Driver | |
| Fabricantes | Motorola Semiconductors | |
| Logotipo |  |
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Freescale Semiconductor, Inc.
Order Number: MC33253/D
Rev 3, 03/2001
Advance Information
Full Bridge Pre-Driver
The MC33253 is a full bridge driver including integrated charge
pump, two independent high and low side driver channels.
The high and low side drivers include a cross conduction suppression
circuit, which, if enabled, prevents the external power FETs from being on
at the same time.
The drive outputs are capable to source and sink 1 A pulse peak
current. The low side channel is referenced to ground, the high side
channel is floating above ground.
A linear regulator provides a maximum of 15.5V to supply the low
side gate driver stages. The high side driver stages are supplied with a
10V charge pump voltage. Such built-in feature, associated to external
capacitor provides a full floating high side drive.
An under- and over-voltage protection prevents erratic system
operation at abnormal supply voltages. Under fault, these functions force
the driver stages into off state.
The logic inputs are compatible with standard CMOS or LSTTL
outputs. The input hysteresis makes the output switching time
independent of the input transition time.
The global enable logic signal can be used to disable the charge
pump and all the bias circuit. The net advantage is the reduction of the
quiescent supply current to under 10µA. To wake up the circuit, 5 V has to
be provided at G_EN. A built-in single supply operational amplifier could
be used to feedback information from the output load to the external
MCU.
• VCC Operating Voltage Range from 5.5 V up to 55 V
• VCC2 Operating Voltage Range from 5.5 V up to 28 V
• Automotive Temperature Range -40°C to 125°C
• 1A Pulse Current Output Driver
• Fast PWM Capability
• Built-In Charge Pump
• Cross Conduction Suppression Circuit
MC33253
55 VOLTS
SEMICONDUCTOR
TECHNICAL DATA
DW SUFFIX
PLASTIC PACKAGE
CASE 751F-05
PIN CONNECTIONS
(TOP VIEW)
CASE 751F-05
VCC 1
C2 2
CP_OUT 3
SRC_HS1 4
GATE_HS1 5
/IN_HS1 6
IN_HS1 7
/IN_LS1 8
IN_LS1 9
GATE_LS1 10
GND1 11
LR_OUT 12
VCC2 13
GND_A 14
28 ISOUT
27 G_EN
26 /CCS
25 SRC_HS2
24 GATE_HS2
23 /IN_HS2
22 IN_HS2
21 /IN_LS2
20 IN_LS2
19 GATE_LS2
18 GND2
17 IS-IN
16 IS+IN
15 C1
ORDERING INFORMATION
Device
PC33253DW
Temperature
Range
-40oC to +125oC
Package
SOIC28
This document contains information on a new product. Specifications and information herein are
subject to change without notice.
For More Information On This Product,
© Motorola, Inc., 2001. All rights reserved.
Go to: www.freescale.com
Page 1/15
1 page  
Freescale SMeCm332i5c3onductor, Inc.
Characteristics
Pin #
Symbol
Min
Typ
Operating Vcc2 Supply Current
(@VCC=55V and VCC2=28V)
(@VCC=12V and VCC2=12V)
Logic pin inactive (high impedance)
13
13
Under Voltage Shutdown VCC2 (Note2)
Under Voltage Shutdown VCC
Over Voltage Shutdown VCC
Over Voltage Shutdown VCC2
OUTPUT SECTION
13 UV2 4.6 5.1
1 UV 4.6 5.1
1 OV 57 61
13 OV2 29.5 31
Output Sink Resistance (Turned off)
VGATE_HS - VSRC_HS =1V
Output Source Resistance (Turned on)
VCP_OUT - VGATE_HS =0.1V
High Side Source Current from Cpout in Switch
On State
3, 4, 5, 10,
19, 24, 25
4, 25
RDS
RDS
ISmax
Max Voltage (VGATE_HS - VSRC_HS),
INH=1, ISmax=200mA
4, 5, 24, 25
SENSE CURRENT AMPLIFIER SECTION (Internal VCC supply @ 12V)
Output Dynamic Range (Isink/source = 200µA)
Open Loop Gain (at 25°C)
28 VOH 4.7 5.0
VOL
A 50
Input Bias Current
Input Offset Voltage (at 25°C)
Input Common Mode Voltage Range
16, 17
IIB
Vio -5.0 2.0
ICMR
0
Common Mode Rejection Ratio
CMRR
70
Sink Capability (Vo>1.1V) (Note 3)
Source Capability (Vo<5V) (Note 3)
Gain Bandwidth Product
28 Isink 2.0 3.0
28 Isource 2.0 3.0
GBW
1.8
Operational Amplifier Output Voltage, Isink=500uA
Operational Amplifier Output Voltage,
Isource=500uA
Operational Amplifier Slew Rate (+)
28
28
VCAO
VCAO
SR+
5
1
Operational Amplifier Slew Rate (-)
SR- 1
Max
10
8
5.5
5.5
64
32.5
Unit
mA
V
V
V
V
22.0 Ohms
22.0 Ohms
200 mA
18 V
V
300 mV
dB
1.0 uA
5.0 mV
5V
dB
mA
mA
MHz
0.5 V
V
V/us
V/us
MC33253
For More InfoMrmOaTtOioRnOLOAn This Product,
Go to: www.freescale.com
rev3.0 - 5/15
5 Page 
Freescale SMeCm332i5c3onductor, Inc.
The smaller Ccp value is, the smaller Vcp_out value is. Moreover, for a same Ccp value, when the switching frequency
increases, the average Vcp_out level decreases. For most of the applications a typical value of 33nF is recommended.
Ccp_out
As shown in figure 11, at high side MOSFET turn on, Vcp_out voltage decreases. This decrease can be calculated according to
Ccp_out value as following :
Qg : Power MosFET Gate Charge
∆VCcp _ out
=
Qg
Ccp _ out
The following figure is the simplified Ccp_out current and voltage waveforms.
fpwm : working switching frequency
Figure 11. Simplified Ccp_out Current and Voltage Waveforms
VCp_out
average VCp_out
Oscillator
in high
state Oscillator
in low
state
High Side
turn on
∆VCcp _ out
ICp_out
f=330kHz
fPWM
Peak
Current
CLR_OUT
CLR_OUT provides peak current needed by the low side MOSFET turn on. VLR_OUT decreasing is as follow:
∆VLR _ out
=
Qg
CLR _ out
Capacitors typical values
In most working cases the following typical values are advised for a good charge pump performing:
Ccp=33nF, Ccp_out=470nF and CLR_OUT=470nF.
These values give a typical 100mV voltage ripple on Vcp_out and VLR_OUT with Qg=50nC.
OP-Amp
The built-in A.O.P. available in the MC33253 allows to get a voltage image of the H-bridge current. This voltage can be
provided by a shunt resistor, as shown in figure 13.
Typically shunt resistivity is dimensioned as low as possible (25mOhm/10A). The maximum A.O.P output voltage is 5V.
Therefore a gain of 10 sets the maximum drop voltage on the sensing resistance at 500mV.
MC33253
For More InfoMrmOaTtOioRnOLOAn This Product,
Go to: www.freescale.com
rev3.0 - 11/15
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet MC33253.PDF ] | |
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