Loading...
INTEGRATED CIRCUITS
DATA SHEET
UBA2030T
Full bridge driver IC
Preliminary specification |
1999 Aug 10 |
Supersedes data of 1997 Sep 16
File under Integrated Circuits, IC11
Philips Semiconductors |
Preliminary specification |
|
|
Full bridge driver IC |
UBA2030T |
|
|
|
|
FEATURES
∙Full bridge driver
∙Integrated bootstrap diodes
∙Integrated high voltage level shift function
∙High voltage input (570 V maximum) for the internal supply
∙Adjustable ‘dead time’
∙Adjustable oscillator frequency
∙High voltage level shifter for the bridge enable function
∙Shut-down function.
APPLICATIONS
∙The UBA2030T can drive the MOSFETs in any type of load configured as a full bridge
∙The circuit is intended as a commutator for High Intensity Discharge (HID) lamps.
ORDERING INFORMATION
GENERAL DESCRIPTION
The UBA2030T is a high voltage integrated circuit fabricated using the BCD750 power logic process.
The circuit is designed for driving the MOSFETs in a full bridge configuration. In addition, it features a shut-down function, an adjustable oscillator and a PMOS high voltage level shifter to control the bridge enable function.
To guarantee an accurate 50% duty factor, the oscillator signal passes through a divider before being fed to the output drivers.
TYPE NUMBER |
|
PACKAGE |
|
|
|
|
|
||
NAME |
DESCRIPTION |
VERSION |
||
|
||||
|
|
|
|
|
UBA2030T |
SO24 |
plastic small outline package; 24 leads; body width 7.5 mm |
SOT137-1 |
|
|
|
|
|
1999 Aug 10 |
2 |
Philips Semiconductors |
|
|
|
|
|
|
|
|
|
Preliminary specification |
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Full bridge driver IC |
|
|
|
|
|
|
|
|
|
|
UBA2030T |
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
QUICK REFERENCE DATA |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
SYMBOL |
PARAMETER |
|
|
|
CONDITIONS |
MIN. |
TYP. |
|
MAX. |
UNIT |
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
High voltage |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
VHV |
high voltage supply |
|
|
|
|
|
|
|
|
0 |
− |
|
570 |
V |
Start-up; powered via pin HV |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Istrtu |
start-up current |
|
|
|
|
|
|
|
|
− |
0.7 |
|
1.0 |
mA |
Vth(osc strt) |
start oscillating threshold |
at fbridge = 500 Hz; no load |
14.0 |
15.5 |
|
17.0 |
V |
|||||||
|
voltage |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Vth(osc stp) |
stop oscillating threshold voltage |
|
|
|
|
|
|
|
|
11.5 |
13.0 |
|
14.5 |
V |
Output drivers |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Io(source) |
output source current |
VDD = VFSL = VFSR = 15 V; |
140 |
190 |
|
240 |
mA |
|||||||
|
|
VGHR = VGHL = VGLR = VGLL = 0 V |
|
|
|
|
|
|||||||
Io(sink) |
output sink current |
VDD = VFSL = VFSR = 15 V; |
200 |
260 |
|
320 |
mA |
|||||||
|
|
VGHR = VGHL = VGLR = VGLL = 15 V |
|
|
|
|
|
|||||||
Internal oscillator |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
fbridge |
bridge oscillating frequency |
EXO pin connected to SGND |
50 |
− |
|
50000 |
Hz |
|||||||
External oscillator |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
fosc(ext) |
external oscillator frequency |
RC pin connected to SGND; |
100 |
− |
|
100000 |
Hz |
|||||||
|
|
|
|
|
fosc(ext) |
|
|
|
|
|
||||
|
|
fbridge = ----------------- |
|
|
|
|
|
|||||||
|
|
2 |
|
|
|
|
|
|
|
|
|
|||
Dead time control |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
tdead |
dead time control range |
|
|
|
|
|
|
|
|
0.4 |
− |
|
4 |
μs |
|
(adjusted externally) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Bridge enable |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
IIH |
HIGH-level input current |
bridge enable active |
100 |
− |
|
700 |
μA |
|||||||
IIL |
LOW-level input current |
bridge enable not active |
0 |
− |
|
20 |
μA |
|||||||
Shut-down |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
VIH |
HIGH-level input voltage |
shut-down active; |
|
VSD |
|
> 5 V/ms |
4.5 |
− |
|
VDD |
V |
|||
|
|
|
||||||||||||
|
|
|
-------------- |
|
|
|
|
|
|
|||||
|
|
|
|
|
|
|
t |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
VIL |
LOW-level input voltage |
shut-down not active; |
0 |
− |
|
0.5 |
V |
|||||||
|
|
|
VSD |
|
> 5 V/ms |
|
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
||||||
|
|
|
-------------- |
|
|
|
|
|
|
|||||
|
|
|
t |
|
|
|
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1999 Aug 10 |
3 |
Philips Semiconductors |
Preliminary specification |
|
|
Full bridge driver IC |
UBA2030T |
|
|
BLOCK DIAGRAM
handbook, full pagewidth |
HV |
BER BE |
18 |
8 |
7 |
|
|
|
|
10 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
FSL |
|
|
|
|
|
|
HIGHER LEFT |
11 |
|
|
|
|
|
|
GHL |
|
|
|
|
|
|
|
DRIVER |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
12 |
|
|
|
|
|
|
|
SHL |
|
|
|
|
|
|
|
15 |
|
|
|
|
BRIDGE ENABLE |
|
FSR |
|
|
|
|
|
|
|
||
|
|
|
|
|
HIGH VOLTAGE |
HIGHER RIGHT |
14 |
|
|
|
|
|
LEVEL SHIFTER |
DRIVER |
GHR |
|
|
|
|
|
|
||
|
|
|
|
OSCILLATOR |
|
13 |
|
|
|
|
|
|
UBA2030T |
|
SHR |
|
|
|
|
|
|
3 |
|
|
|
|
|
|
|
LOWER LEFT |
|
|
|
|
|
|
|
GLL |
|
|
|
|
|
2 |
|
DRIVER |
|
|
|
|
|
|
2 |
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
PGND |
LOW VOLTAGE |
|
|
|
|
LOW VOLTAGE |
LOWER RIGHT |
1 |
|
|
|
LOGIC |
GLR |
|||
SUPPLY |
|
|
|
LEVEL SHIFTER |
DRIVER |
||
|
|
|
|
|
|||
24 |
23 |
5 |
20 |
22 |
21 |
4, 6, 9, 16, 17, 19 |
|
|
|
|
|
|
|
|
MGK590 |
SGND |
VDD |
RC EXO |
DTC |
SD |
n.c. |
|
|
Fig.1 Block diagram.
1999 Aug 10 |
4 |
Philips Semiconductors |
Preliminary specification |
|
|
Full bridge driver IC |
UBA2030T |
|
|
PINNING |
|
|
|
|
|
|
|
|
|
SYMBOL |
PIN |
DESCRIPTION |
|
|
|
|
|
|
|
GLR |
1 |
gate of lower right MOSFET |
|
|
|
|
|
|
|
PGND |
2 |
power ground for sources of lower |
|
|
|
|
left and right MOSFETs |
|
|
|
|
|
|
|
GLL |
3 |
gate of lower left MOSFET |
|
|
|
|
|
|
|
n.c. |
4 |
not connected |
|
handbook, halfpage |
|
|
|||
|
|
|
|
|
RC |
5 |
RC input for internal oscillator |
|
|
|
|
|
|
|
n.c. |
6 |
not connected |
|
|
|
|
|
|
|
BE |
7 |
bridge enable control input |
|
|
|
|
|
|
|
BER |
8 |
bridge enable reference input |
|
|
|
|
|
|
|
n.c. |
9 |
not connected |
|
|
|
|
|
|
|
FSL |
10 |
floating supply voltage left output |
|
|
|
|
|
|
|
GHL |
11 |
gate of higher left MOSFET |
|
|
|
|
|
|
|
SHL |
12 |
source of higher left MOSFET |
|
|
|
|
|
|
|
SHR |
13 |
source of higher right MOSFET |
|
|
|
|
|
|
|
GHR |
14 |
gate of higher right MOSFET |
|
|
|
|
|
|
|
FSR |
15 |
floating supply voltage right output |
|
|
|
|
|
|
|
n.c. |
16 |
not connected |
|
|
|
|
|
|
|
n.c. |
17 |
not connected |
|
|
|
|
|
|
|
HV |
18 |
high voltage supply input |
|
|
|
|
|
|
|
n.c. |
19 |
not connected |
|
|
|
|
|
|
|
EXO |
20 |
external oscillator input |
|
|
|
|
|
|
|
SD |
21 |
shut-down input |
|
|
|
|
|
|
|
DTC |
22 |
‘dead time’ control input |
|
|
|
|
|
|
|
VDD |
23 |
internal (low voltage) supply |
|
|
SGND |
24 |
signal ground |
|
|
|
|
|
|
|
GLR |
1 |
|
|
SGND |
|
24 |
|||
PGND |
|
|
|
VDD |
2 |
|
23 |
||
GLL |
3 |
|
|
DTC |
|
22 |
|||
n.c. |
4 |
|
|
SD |
|
21 |
|||
RC |
|
|
|
EXO |
5 |
|
20 |
||
|
|
|
|
|
n.c. |
6 |
UBA2030T |
19 |
n.c. |
BE |
|
|
HV |
|
7 |
|
18 |
||
|
8 |
|
|
|
BER |
|
17 |
n.c. |
|
n.c. |
9 |
|
|
n.c. |
|
16 |
|||
FSL |
10 |
|
|
FSR |
|
15 |
|||
GHL 11 |
|
|
GHR |
|
|
14 |
|||
SHL 12 |
|
|
SHR |
|
|
13 |
|||
|
|
|
|
|
|
|
MGK589 |
|
|
Fig.2 Pin configuration.
1999 Aug 10 |
5 |
Philips Semiconductors |
Preliminary specification |
|
|
Full bridge driver IC |
UBA2030T |
|
|
FUNCTIONAL DESCRIPTION
Supply voltage
The UBA2030T is powered by a single supply voltage connected to the HV pin (the full bridge supply could be used, for example). The IC generates its own low voltage supply for driving the internal circuitry and the MOSFETs in the full bridge, removing the need for an additional low voltage supply. A capacitor must be connected between the VDD pin and SGND to obtain a ripple-free internal supply voltage.
Start-up
When the power is turned on, the UBA2030T enters a start-up phase; the high side MOSFETs are switched off and the low side MOSFETs switched on. During start-up, the bootstrap capacitors are charged and the bridge output current is zero.
Oscillation
At the point where the supply voltage at the HV pin crosses the ‘start oscillating threshold’, the bridge begins commutating between the following two defined states:
Higher left and lower right MOSFETs on, higher right and lower left MOSFETs off
Higher left and lower right MOSFETs off, higher right and lower left MOSFETs on.
When the internal oscillator is used, the bridge commutating frequency is determined by the values of an external resistor and capacitor. In this mode, the EXO pin must be connected to SGND.
When an external oscillator is used, its output must be connected to the EXO pin; the internal oscillator must be disabled by connecting the RC pin to SGND. The bridge commutating frequency is half the oscillator frequency due to a ÷2 circuit which guarantees an accurate 50% duty factor.
The time between turning off the conducting pair of MOSFETs and turning on the other pair, the ‘dead time’, can be adjusted using an external resistor. If the supply voltage at the HV pin falls below the ‘stop oscillating threshold’, the UBA2030T re-enters the start-up phase.
Bridge enable
The bridge enable function allows the bridge to be held in its current state. When active, it connects the RC pin to SGND, disabling the internal oscillator. If the bridge enable function is activated during ‘dead time’, the bridge is allowed to enter the next conducting state before being held. Oscillations resume the instant the bridge enable function is turned off. A timing diagram is shown in Fig.3.
To hold the bridge, an external control circuit is required to provide a source current to the bridge enable control input (pin BE), and to supply a reference voltage to pin BER, (see Fig.6).
Shut-down
The active HIGH shut-down input (pin SD) can be used at any time to turn off all four MOSFETs. However, if the supply voltage drops below the ‘stop oscillating threshold’, the bridge re-enters the start-up phase even if the shut-down function is active.
1999 Aug 10 |
6 |
Loading...