MC10XS4200FK Freescale Semiconductor, MC10XS4200FK Datasheet - Page 40

• Manufacturer Part Number: MC10XS4200FK
• Description: Power Switch ICs - Power Distribution 24v 10MOHM DUAL HI-SIDE
• Manufacturer: Freescale Semiconductor

Specifications of MC10XS4200FK

• Rohs: yes
• On Resistance (max): 18 mOhms
• Operating Supply Voltage: 8 V to 36 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Package / Case: PQFN-23
• Minimum Operating Temperature: - 40 C

FUNCTIONAL DEVICE OPERATION
OPERATION AND OPERATING MODES
System Requirements for Current Monitoring
(RC-filtered) voltage across the pull-down resistor connected
between the CSNS pin and GND
measurements (1) and (2) must be spaced sufficiently wide
apart (e.g. 5 time constants) to get stabilized values, but
close enough to be sure that the offset value wasn’t changed.
The A/D converter of the external micro-controller that is used
to read the current sense voltage V(csns) must have
sufficient resolution to avoid introducing additional errors.
Accuracy with and without Offset Compensation
before and after offset compensation, is shown in
(solid lines = Full Scale accuracy with offset compensation
and dotted lines without offset compensation).
.
function will be lowered according to the values shown in
Figure 19
time is displayed, for CSR0 and CSR1). Track & Hold mode
shouldn’t be used below f= 60 Hz.
40
10XS4200
Current monitoring is usually implemented by reading the
The sensing accuracy for CSR0 and CSR1, obtained
In Track & Hold mode, the accuracy of the current sense
Figure 18. Current Sense Accuracy Versus Output
(error percentage as a function of the switch-off
Current
(Figure
21). Therefore,
Figure 18
Temperature Prewarning Detection
set (FAULTR register), when the observed temperature of the
GND pin is higher than T
feature is useful when the temperature of the direct
surroundings of the device must be monitored. However, the
channel isn’t switched off. To be able to reset the OTW-bit,
the FAULTR register must be read after the moment that
temperature T °C < T
Switching State Monitoring
real time by bits OUT[x] in the STATR register (bit OD0/OD1).
The Out[x] bit is asserted logic high when the channel is on.
(output voltage V(HS[x]) higher than V
voltage V
may not correspond to the state of the channel’s control
signal hson[x], in case of an open load fault
Determining the Channel’s Switching
EMC PERFORMANCES
dependent, and applies to a typical application
The device withstands transients per ISO 7637-2 /24 V. An
external freewheeling diode connected to at least one output
is required for sustaining ISO 7637 Pulse 1 (600 V). To
withstand Pulse 2, at least one of the 2 channels must be
connected to a typical load (bulb). It withstands electric fields
up to 200 V/m and bulk current injection (BCI) up to 200 mA
per ISO11452. The device meets Class 5 of the CISPR25
emission standard.
In Normal mode, the temperature prewarning (OTW) bit is
The switching state (On/Off) of the channels is reported in
Specified EMC performance is board and module
Figure 19. Track and Hold Current Sense Accuracy
PWR
drops below 13 V, the reported channel state
OTWAR
Analog Integrated Circuit Device Data
OTWAR
.
(pin #14, see
Freescale Semiconductor
State).
PWR
/2). When supply
(seeFactors
Figure
(Figure
3). The
21).