MC10XS4200FK Freescale Semiconductor, MC10XS4200FK Datasheet - Page 33

• 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

profile. The channel is switched Off when a threshold is
crossed or a window width is exceeded.
defined by two different current levels, as illustrated by
Figure
exceeds the selected lower over-current level (I
case, the allowed over-current duration is defined by
parameters t
explained in the section
protection configuration Register
Auto-retry After Over-current Shut Off
temperature Fault (latchable
expiration of the available amount of auto-retries (described
in Auto-retry).
Switch Mode Operation and Over-current Duration
duty cycle lower than 100% at a frequency above f
(min.) or f
mode in internal/external PWM or in direct input mode. In
switch mode, the accumulated time spent by the load current
in a particular window segment during On-times of
successive switching periods is identified by the
aforementioned duration counter, and compared to the active
segment width. The associated off-times are excluded by the
duration counter. The channel is turned-off when the value of
the counter exceeds the window width. In
current detection shutdown is shown in case of switch mode
operation with a duty cycle of 50% (solid line) and 100%
(fully-on, dashed line). The device is turned off much later in
switch mode than in fully-on mode, since the duration counter
only counts over-current during on-times.
Analog Integrated Circuit Device Data
Freescale Semiconductor
Figure 14. Over-current Shutdown in PWM Mode (solid
In DC motor mode, only one over-current window exists,
The selection of the different profiles and values is
When auto-retry is activated, OC-latching
Switch mode is defined as any device operation with a
6. This window is opened anytime the output current
line) and Non-PWM Mode (dashed line)
PWM_INT
OCM1_M
(min.). The device may operate in Switch
, t
OCM1
Address A0100 — Over-current
, and t
fault)) only occurs after
(OCR_s).
OCH2
.
Figure
(Over-
OCLx
14, over-
PWM_EXT
). In this
Reset of the Duration Counter
delatch sequence
(CONFs = 0), this counter is also reset automatically at each
auto-retry (but not in DC motor mode).
performing a delatch sequence or (automatically) after
occurrence of a new on-period without any over-current
([hson[x]=1). Reset then actually occurs at the first turn-off
instant following that on-period.
PWM activity unless delatching is performed.
Severe Short-circuit Fault (latchable fault)
(wiring length L
Off immediately. For wiring lengths above L
is protected from short-circuits by the normal over-current
protection functions
When an SC occurs, FSB goes low (logic [0]), and the SC bit
is set, eventually followed by an auto-retry. SC is of the
latchable type (see
Fault
Over-voltage Detection (enabled by default)
enabled (see When over-voltage occurs (V
the device will turn OFF both channels simultaneously, the
FSB pin is asserted low, and the OV fault bit is set to logic [1].
The channels remain OFF until the supply voltage drops
below a threshold voltage V
The OV bit can then be reset by reading out the STATR
register.
OV_dis = 1 in the general configuration (GCR) register. In
this case, the FSB pin will neither assert a fault occurrence,
nor will the channels be turned off. However, the fault register
(OV bit) will still report an over-voltage occurrence (when
V
the value of the on-resistance on both channels (R
lays within the ranges specified in
Under-voltage Fault (Latchable Fault)
voltage (V
and the fault register’s (common) UV bit is set to [1].
different cases exist:
• If the channel’s internal control signal hson[x] is off, FSB
• If the channel’s control signal is on, the channel will only
PWR
Reset of the duration counter is achieved by performing a
In DC motor mode, the duration counter is reset either by
In switch mode, the duration counter is not reset by normal
When a severe short-circuit (SC) is detected at turn-ON
By default, the supply over-voltage protection (V
The over-voltage protection can be disabled by setting the
The channels will always be turned off when the supply
When the under-voltage condition then disappears, two
will return to logic [1], but the UV bit will remain set until at
least one output is turned on (warning).
be turned on if a delatch or POR sequence is performed
prior to the turn on request. The UV bit can then only be
reset by reading out the STATR register.
Delatching).
> V
PWR(OV)
PWR
) drops below V
LOAD
) as a warning. When V
(Fault
Protection and Diagnostic Features
< L
(Over-current Fault (latchable
OPERATION AND OPERATING MODES
SHORT
Delatching). In lighting mode
FUNCTIONAL DEVICE OPERATION
PWR
PWR(UV)
,
Table
< V
Table
PWR(OV)
3), the channel is shut
. FSB drops to logic [0],
3.
PWR
SHORT
PWR
- V
> V
> V
PWR(OVHYS)
, the device
DS(ON
PWR(OV)
fault)).
PWR(OV)
PWR
10XS4200
)
) is
and
) still
33
,
),
.