SI85XX-EVB Silicon Laboratories Inc, SI85XX-EVB Datasheet - Page 22

• Manufacturer Part Number: SI85XX-EVB
• Description: BOARD EVAL CURRENT SENSOR 10A
• Manufacturer: Silicon Laboratories Inc

Specifications of SI85XX-EVB

• Sensor Type: Current Sensor
• Sensing Range: 10A
• Interface: Analog
• Voltage - Supply: 2.7 V ~ 5.5 V
• Embedded: No
• Utilized Ic / Part: Si8512
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Sensitivity: -
• Lead Free Status / Rohs Status: Supplier Unconfirmed
• Other names: 336-1425

Si85xx
3.5. Full-Bridge Converter Example
The full-bridge circuit of Figure 18 uses an Si851x configured in 4-Wire Ping-Pong output mode. The switching
frequency of this phase-shifted full-bridge is 150 kHz, and the maximum control phase overlap is 70%.
Given the 150 kHz switching frequency (duty cycle fixed at 50%), the equivalent period is 1/150 x 10
70% maximum overlap, this equates to a worst-case t
can, therefore, be used and is selected by connecting TRST to VDD. As shown in the timing diagram of Figure 18,
integrator reset occurs when current circulates between Q1 and Q2 and between Q3 and Q4 (i.e. when current is
not being sourced from VIN). The external driver delay ensures reset is complete prior to the start of measurement.
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0.1 µF
C1
1 µF
C2
VDD
MODE
PH1
PH2
PH3
PH4
VDD
GND
R1
R2
R3 R4
Si851x
Figure 18. Full-Bridge Converter
IOUT
VIN
IIN
Q3
Q1
TI
Preliminary Rev. 0.21
OUT1
OUT2
TRST
R
VDD
Q2
Q4
value of 0.3 x 6.6 x 10
OUT1
OUT2
Switches Turned ON
Si85xx State
OUT1
OUT2
PH2
PH3
PH4
PH1
MEASURE
1–4
–6
= 1.98 µs. The default value for t
RESET
1–2
MEASURE
2–3
RESET
3–4
3
= 6.6 µs. At
R