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33937 Datasheet, PDF (3/47 Pages) Freescale Semiconductor, Inc – Three Phase Field Effect Transistor Pre-driver
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PIN CONNECTIONS
PIN CONNECTIONS
PHASEA
1
54
PGND
2
53
EN1
3
52
EN2
4
51
RST
5
50
N/C
6
49
PUMP
7
48
VPUMP
8
47
VSUP
9
46
PHASEB
10
45
PHASEC
11
44
PA_HS
12
43
Transparent
PA_LS
13
42
Top View
VDD
14
41
PB_HS
15
40
PB_LS
16
39
INT
17
38
CS
18
37
SI
19
36
SCLK
20
.35
SO
21
34
PC_LS
22
33
PC_HS
23
32
AMP_OUT
24
31
AMP_N
25
30
AMP_P
26
29
OC_OUT
27
28
VPWR
N/C
N/C
VLS
N/C
N/C
PA_BOOT
PA_HS_G
PA_HS_S
PA_LS_G
PA_LS_S
PB_BOOT
PB_HS_G
PB_HS_S
PB_LS_G
PB_LS_S
PC_BOOT
PC_HS_G
PC_HS_S
PC_LS_G
PC_LS_S
N/C
VLS_CAP
GND1
GND0
VSS
OC_TH
Figure 3. 33937 Pin Connections
Table 1. 33937 Pin Definitions
A functional description of each pin can be found in the Functional Pin Description section beginning on page 22.
Pin
Pin Name Pin Function Formal Name
Definition
1
PHASEA Digital Output
Phase A
Totem Pole output of Phase A comparator. This output is low when the
voltage on PA_HS_S (Source of High Side FET) is less than 50% of VSUP
2
PGND
Ground
Power Ground
Power ground for charge pump
3
EN1
Digital Input
Enable 1
Logic signal input must be high (ANDed with EN2) to enable any gate drive
output.
4
EN2
Digital Input
Enable 2
Logic signal input must be high (ANDed with EN1) to enable any gate drive
output
5
6, 33, 49,
50, 52, 53
7
8
9
RST
N/C
Digital Input
–
PUMP
VPUMP
VSUP
Power Drive
Out
Power Input
Analog Input
Reset
No Connect
Pump
Voltage Pump
Supply Voltage
Reset input
Do not connect these pins
Charge pump output
Charge pump supply
Supply voltage to the load. This pin is to be connected to the common
Drains of the external High Side FETs
10
PHASEB Digital Output
Phase B
Totem Pole output of Phase B comparator. This output is low when the
voltage on PB_HS_S (Source of High Side FET) is less than 50% of VSUP
11
PHASEC Digital Output
Phase C
Totem Pole output of Phase C comparator. This output is low when the
voltage on PC_HS_S (Source of High Side FET) is less than 50% of VSUP
Analog Integrated Circuit Device Data
Freescale Semiconductor
33937
3
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